[Bishop]

The check engine light did come on and started flashing.

A flashing MIL is catalyst damaging misfire.

[Bishop]

Didn't see a crank sensor one but here are a few to look at. Let me know which one you want to see. I have to get out to the shop yet tonight. Where in Florida are you?

Also need to know 2WD or 4WD and 1.6L or 2.0L.

2000 Chevrolet Tracker - 4WD - All Bulletins

Advanced Service Information
#07-08-45-002 Service Alert: Concerns With Aftermarket Fuses in GM Vehicles - (Sep 5, 2007)
#03-06-04-012A Inspection of Related Wiring Harness Connections When Diagnosing Misc. DTCs, Intermittent Driveability Concerns, Hard Start, No Start, Incorrect Gauges, Inop I/C Systems, SES/4WD Lamps Illuminated - (Aug 10, 2005)

Field Product Reminder
#06-00-89-024U Car and Truck Fix It Right the First Time Issues - (Feb 5, 2008)

Information
#05-00-89-078B GM Fuel System Treatment PLUS, Fuel Sending Unit Corrosion and Fuel System Deposits - (Feb 6, 2008)
#06-02-32-013A Diagnostic Tips/Recommendations When Power Steering Pump Replacement is Necessary - (Feb 5, 2008)
#04-06-01-029B Unnecessary Engine Crankcase and Subsystems Flushing Services, Additive Recommendations and Proper Utilization of GM Simplified Maintenance Schedule to Enhance Customer Service Experience - (Feb 5, 2008)
#06-06-04-035A Use of E85 Fuels in Vehicles Not Certified by GM as being FlexFuel Compatible/Aftermarket Conversion of Vehicles to Operate on E85 Fuels - (Feb 5, 2008)
#01-04-18-001F Driveline Characteristics for All-Wheel Drive (AWD) and Four-Wheel Drive (4WD) Systems - (Feb 4, 2008)
#06-08-44-015A Information on Eliminating Noise in Audio System When Using Portable Playback Device - (Feb 1, 2008)
#00-08-48-005C Distortion in Outer Surface of Vehicle Glass - (Feb 1, 2008)
#04-03-10-012B Pitting and Brake Dust on Chrome Wheels - (Feb 1, 2008)
#03-00-91-001D Vibration Analysis Worksheet - (Jan 31, 2008)
#08-07-30-004 4L60-E, 4L65-E, 4L70-E HYDRA-MATIC Automatic Transmission RPOs M30, M70, M32, M33, MK2, MD6 Oil Cooler Fitting Change - (Jan 31, 2008)
#99-08-52-005C Remote Keyless Entry Operational Characteristics - (Jan 30, 2008)
#08-01-38-001 Information on New GE-48800 CoolTech Refrigerant Recovery/Recharge Equipment - (Jan 25, 2008)
#04-08-50-006B Minor Wrinkles/Creases, Discoloration, Cigarette Burns and Customer Induced Cuts and Stains on Front and Rear Dirver and Passenger Seats with Leather, Vinyl or Cloth Seat Covers - (Jan 25, 2008)
#05-06-02-002B DEX-COOL Coolant - New Leak Detection Dye J 46366 Replaces J 29545-6 - (Jan 18, 2008)
#04-08-44-005C Utilizing Tech 2 to Retrieve Part Numbers for Radios, Compact Disc (CD) Changers and Instrument Panel Clusters (IPC) - (Jan 18, 2008)
#00-08-46-004C Re-establishing Communications with OnStar Center After Battery Disconnect - (Jan 17, 2008)
#04-00-89-053B Engineering Information (EI) Process - (Jan 17, 2008)
#01-00-89-011g GM Technical Assistance Information Form (TAC) and Service Strategy Process Utilizing Customer Service Comeback Prevention, Strategy Based Diagnostics (SBD) and Intermittent Concern Diagnosis - (Jan 15, 2008)
#00-03-10-006C Information on Tire Radial Force Variation (RFV) - (Jan 9, 2008)
#99-09-40-005E Seat Belt Extender Availability - (Jan 9, 2008)
#06-08-46-002B Availability of GM OnStar Vehicle Diagnostics and GM Goodwrench Remote Diagnostic Services - (Jan 9, 2008)
#02-08-46-006C Incorrect OnStar Global Positioning System (GPS) Location Reported During OnStar Call - (Jan 8, 2008)
#05-08-46-004B OnStar Phone Number Concerns (Phone Number Incorrect/Assigned to Another Vehicle/Phone) That Occur During Diagnosis of OnStar System - (Jan 8, 2008)
#04-03-10-001D Tire Puncture Repair Procedures for All Cars and Light Duty Trucks - (Jan 7, 2008)
#05-03-10-020A Use of Nitrogen Gas in Tires - (Jan 3, 2008)
#07-03-10-016 GM Guidelines for Changing Tire and Wheel Assemblies - (Dec 17, 2007)
#07-08-64-022 Information on Curb Park Assist and Memory Related Issues on Outside Rear View Mirrors - (Dec 13, 2007)
#04-07-30-037D Release of DEXRON-VI Automatic Transmission Fluid (ATF) - (Nov 21, 2007)
#07-00-89-047A Technical Assistance Center (TAC) Coverage Available for Current and Last Nine Model Year Vehicles (U.S. Only) - (Nov 15, 2007)
#01-08-42-001E Exterior Lamp Condensation and Replacement Guidelines - (Nov 5, 2007)
#03-00-89-008D Corrosion Protection for Metal Panels With Dealer Installed Accessories Fastened By Drilled Holes - (Nov 2, 2007)
#00-00-90-002I Information on Proper Tire Pressure - (Oct 23, 2007)
#03-07-29-004D Manual Transmission Operating Characteristics - (Oct 17, 2007)
#05-00-89-072A Fuel and Oil Additives - Facts and Myths/Maximizing Fuel Economy - (Oct 16, 2007)
#03-08-48-006C Repair Information for Reconnection of Rear Window Defroster/Defogger Contact or Tab - (Oct 9, 2007)
#05-06-01-010B Service Information Update on Consolidating Use of GM Liquid Gasket/Engine Sealants and New Sealant Dispenser GE-48326 Essential Tool - (Sep 28, 2007)
#03-03-10-007C Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of GM Original Equipment Tires - (Sep 21, 2007)
#07-06-01-016A Information on Internal Engine Noise or Damage After Oil Filter Replacement - (Sep 17, 2007)
#01-00-89-010F Information on Use of Customer Concern Verification Sheets, Comeback Prevention and Repeat Repair Log - (Sep 14, 2007)
#05-03-10-005C Performance Characteristics of Vehicles with Accessory Wheel/Tire Assemblies Installed as Upsized to Original Equipment - (Aug 21, 2007)
#07-00-89-036 Enhancing Field Product Reports with Digital Pictures - (Aug 2, 2007)
#05-06-04-035C Usage of E85 Fuels in GM Vehicles - (Jul 30, 2007)
#05-06-04-022D TOP TIER Detergent Gasoline (Deposits, Fuel Economy, No Start, Power, Performance, Stall Concerns) - Canada ONLY - (Jul 26, 2007)
#06-08-50-009B Information on Passenger Presence Sensing System (PPS or PSS) Concerns with Custom Upholstery, Accessory Seat Heaters or Other Comfort Enhancing Devices) - (Jul 19, 2007)
#07-00-89-028 GM Training: May 2007 New Course Information (For U.S. Dealers and Aftermarket) - (Jun 27, 2007)
#07-01-38-004 Information on GM ACR2000 (J-43600) and New Refrigerant Recovery Recharging Equipment SAE J2788 - (Jun 27, 2007)
#07-01-38-001 GM Training: HVAC Systems and Operation Stage 2 WBT and IDL (11044.03) (For U.S. Dealers Only) - (Jun 26, 2007)
#07-00-89-005 GM Training: Maintaining GM STC Master Technician Certification (MTC) (For U.S. Dealers Only) - (Jun 26, 2007)
#07-00-89-007 GM Training: January 2007 GM Service Know-How Emerging Issues Seminar (#10207.01D) (For U.S. Dealers Only) - (Jun 26, 2007)
#07-00-89-011 GM Training: Course Information (For U.S. Dealers and Aftermarket) - (Jun 26, 2007)
#07-00-89-013 GM Training: March 2007 New Course Information (For U.S. Dealers and Aftermarket) - (Jun 26, 2007)
#07-00-89-014 GM Training: Three Technology Close-Up IDL Seminars as New 2007 Service Training Standard (STS) Requirements (U.S. Dealers) - (Jun 26, 2007)
#07-00-89-016 GM Training: Number of Technicians Required Reduced for Two Categories (U.S. Dealers) - (Jun 26, 2007)
#99-08-64-016B Use of Silicone for Weatherstrip Maintenance - (Jun 22, 2007)
#00-06-01-026B Intake Manifold Inspection/Replacement After Severe Internal Engine Damage - (Jun 21, 2007)
#05-00-89-067B Communication Strategy of Service Information/Strategy Based Diagnostics - (Jun 14, 2007)
#06-08-43-003A Windshield Wiper Performance, Cleaning Instructions and Maintenance - (Jun 8, 2007)
#02-06-03-008C Low Voltage Display on IP Gauge, Lights Dim at Stop Lights, Battery Discharged, No Start, Slow Cranking, Dim Lights at Idle, Low Generator Output - (May 30, 2007)
#02-07-30-029K Product Quality Center (PQC) for Engine, Transmission Assembly and Transfer Case Replacement - (May 24, 2007)
#01-07-30-042E Information on 2-3 Upshift or 3-2 Downshift Clunk Noise - (May 21, 2007)
#07-08-63-001 Information on Repair of Polypropylene Energy Absorbers - (Apr 17, 2007)
#07-08-44-007 Information on Obtaining Replacement Navigation Discs When Radios are Exchanged - Order Replacement Navigation Disc Through Navigation Disc Center - (Apr 17, 2007)
#01-06-01-011D Information on Engine Oil Consumption Guidelines - (Apr 3, 2007)
#07-08-98-001 Info - Non-approval of Clipping (Sectioning of Two Vehicles) for Collision Repair - (Apr 2, 2007)
#02-08-42-004A Info - PRNDL Display Reduced Visibility for Approximately One Minute - (Mar 30, 2007)
#07-00-89-003 Info - New Bulletin Category: Technical Training (U.S. Only) - (Feb 15, 2007)
#04-07-30-013B Info - Automatic Transmission Shift, Engine Driveability Concerns or Service Engine Soon (SES) Light On as a Result of the Use of an Excessively/Over-Oiled Aftermarket, Reusable Air Filter - (Feb 1, 2007)
#06-00-89-051A KeyCode Security Rules and Information on GM KeyCode Look-Up Application - (Jan 24, 2007)
#02-08-98-002B Info - Hem Flange Rust Repair - (Jan 17, 2007)
#04-06-04-054A Info - Non-GM Parts and Accessories (Aftermarket) - (Jan 11, 2007)
#01-03-10-012C Info - Guidelines for Using E2020-Wheel Alignments, E2000-Toe Adjust and E0200, E0201, E0203, E0204-Wheel Balance - (Jan 4, 2007)
#99-07-30-030E Info - Grinding and/or Growling Noise in Park on Incline - (Jan 3, 2007)
#03-07-30-007C Info - Engagement Time of Electronically Controlled Transmissions in General Motors Vehicles (Garage Shifts, Park to Reverse, Neutral to Drive, Neutral to Reverse, Park to Drive, Delayed Engagement) - (Dec 19, 2006)
#06-08-46-007 Information on OnStar Analog-Only Systems - (Dec 13, 2006)
#02-07-30-001E Diagnostic Information on Diagnostic Trouble Code (DTC) P0894 and P1870 - (Dec 7, 2006)
#04-06-04-047G Info - TOP TIER Detergent Gasoline (Deposits, Fuel Economy, No Start, Power, Performance, Stall Concerns) - U.S. Only - (Nov 28, 2006)
#01-07-31-002B Info - Improved Bleeding Procedure for Hydraulic Clutch Release System - (Nov 1, 2006)
#02-00-89-002F Information for Dealers on How to Submit a Field Product Report - (Oct 26, 2006)
#00-07-30-009B Info - Current Model Year Goodwrench Transmission Replacement Assembly Program - (Oct 10, 2006)
#00-06-04-033B Info - I/M Readiness as Part of Emission Inspection and Maintenance Program for OBD II Vehicles - (Oct 10, 2006)
#99-00-89-011B Key Code Information - (Oct 10, 2006)
#02-08-98-001C Info - Metal Panel Bonding - (Oct 9, 2006)
#00-00-89-027D Info - Eliminating Unwanted Odors in Vehicles - (Oct 3, 2006)
#05-03-07-009A Info - Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles - (Sep 28, 2006)
#06-06-04-046 Information on Engine Misfire MIL/SES Light Illuminated or Flashing DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0420 or P0430 - (Sep 12, 2006)
#06-08-111-004 Information on Discoloration, Blistering, Peeling or Erosion of Various Exterior Emblems Including Chevy Bowtie - (Sep 8, 2006)
#06-03-10-010 Information on Proper Wheel Changing Procedures and Cautions - (Sep 7, 2006)
#00-06-02-006D Engine Coolant Recycling and Warranty Information - (Aug 15, 2006)
#06-00-89-038 Information on Radio and Instrument Panel Cluster (IPC) Part Restrictions (U.S. Only) - (Aug 7, 2006)
#06-06-04-037 Info - Normal Characteristics of Malfunction Indicator Lamp (MIL) During On-Board Diagnostic (OBD) Inspection/Maintenance (I/M) Testing - (Aug 4, 2006)
#00-03-10-002D Info - Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels - (Aug 1, 2006)
#00-00-89-008F Info - Recreational (Dinghy) Towing - (Jul 28, 2006)
#06-01-39-007 Info - Contaminated R134a Refrigerant Found on Market for Automotive Air-Conditioning Systems - (Jul 25, 2006)
#06-00-89-036 Owner Manual and Warranty Information in Service Information (SI) Website/Distributed on CD - (Jul 21, 2006)
#99-08-51-007C Info - Refinishing Aluminum Wheels - (Jun 19, 2006)
#06-00-89-032 Info - Escalation Process for Critical Orders for Electronic Service Center (ESC) Parts - (Jun 13, 2006)
#02-00-89-017B Info - Promotional Pricing on Essential Tool Consumable Products - (Jun 12, 2006)
#99-04-20-002D Information on Driveline Clunk Noise When Shifting Between PARK and DRIVE, PARK and REVERSE or DRIVE and REVERSE - (Jun 8, 2006)
#03-07-30-043A Information Regarding Automatic Transmission Shift Lock Control Function - (May 25, 2006)
#06-04-21-001 Info - Updated Transfer Case Connector Service Kit Now Available for Transfer Case Speed Sensor Wire Harness Connector that Comes Loose or Connector Retainer Clip Breaks - (May 17, 2006)
#04-06-01-034C Info - Instructions to be Followed to Aid in Obtaining Root cause Analysis on Both OEM and Goodwrench Engines, Transmissions and Transfer Cases on Vehicles with 402 km (250 mi) or Less - (May 17, 2006)
#06-08-45-004 Info - Instrument Panel (I/P), Body and General Wiring Harness Repair - (May 2, 2006)
#02-08-46-004A Info - Cellular Error Messages Received when Trying to Connect to OnStar - (Apr 11, 2006)
#06-00-89-018 Discontinuation of the Field Product Reminder Bulletin/Bulletin Subscription Information - (Apr 6, 2006)
#02-08-48-001B Info - Urethane Adhesives for Stationary Glass and Other Applications - (Mar 29, 2006)
#03-06-03-004B Info - Midtronics Code Generated by J42000 or J42000EU Battery Tester Required for Claim Processing On Labor Operation N0110 - (Mar 14, 2006)
#05-06-03-002B Info - Battery and Charging System Electrical Diagnostics - (Mar 14, 2006)
#02-06-03-009B Battery Charging Tips (Includes Information References for HP2 Hybrid Truck (PHT) 42-Volt System) - (Mar 14, 2006)
#06-03-10-004 Info - Proper Use of OEM Service Wheel Weights, Marring and/or Damage Due to Use of Non-OEM and/or Incorrect Wheel Weight Installation - (Mar 1, 2006)
#06-08-45-001 Information on Changes to the SI Table of Contents, Electrical Connectors, Terminal Testing/Repair and the Importance of J-38125 Terminal Repair Kit Maintenance - (Feb 17, 2006)
#01-07-30-036F Info - Diagnostic Tips For Automatic Transmission DTC P0756, Second, Third, Fourth Gear Start - (Feb 14, 2006)
#02-06-05-004b Info - Misfire DTCs P0300, P1380, P1381 and Catalytic Converter Damage Due to Installation of Alarm Systems - (Feb 14, 2006)
#06-07-30-006 Diagnostic Information for Front Wheel Drive Transaxle/Transmission Final Drive and/or Front Hub Bearing Hum and/or Grind Noise - (Feb 9, 2006)
#02-07-30-052D Info - Automatic Transmission Oil Cooler Flush and Flow Test Essential Tool J-45096 TransFlow - (Feb 6, 2006)
#04-00-89-018B Info - Processing GM Accessories - Initial Quality Issues - (Jan 24, 2006)
#99-00-89-021E Info - Expediting Warranty Parts - (Jan 24, 2006)
#01-07-30-029A Info - New Product Feedback Form and Process for Automatic Transmission Core Returns - (Jan 18, 2006)
#00-06-01-012B Info - Use of Surface Conditioning Disks - (Jan 18, 2006)
#04-06-04-051B Info - Maintenance Cleaning of Fuel Injectors - (Jan 4, 2006)
#99-08-51-001A Info - Paint-less Dent Repair Process - (Nov 21, 2005)
#02-01-39-004B Info - New PAG Oil Released - (Nov 16, 2005)
#01-07-30-010B Info - Automatic Transmission/Transaxle Torque Converter Replacement - (Oct 11, 2005)
#01-07-30-041B Info - Transmission Fluid Leak Diagnosis - (Oct 6, 2005)
#02-07-30-024B Info - Diagnosis of Cracked or Broken Transmission Case - (Aug 18, 2005)
#05-00-89-056 Info - Release of GM Tool Organizaiton DVD Version 8.0 (J-43921-G) - (Aug 17, 2005)
#05-00-89-050 Info - SPAC Case Escalation Process - (Aug 5, 2005)
#05-04-21-004 Info - Guidelines for Proper Use of Labor Operation Numbers when Servicing Transfer Case - (Aug 2, 2005)
#04-08-48-001B Info - Rear Window Defogger - Broken Heating Grid Detection Method - (Jun 28, 2005)
#05-05-22-001 Info - On-Car Brake Lathe Specifications and Maintenance Requirements - (Jun 8, 2005)
#05-06-01-017 Goodwrench Powertrain Wholesale Program (U.S. Only) - (Jun 3, 2005)
#05-06-02-006 Instructions for Using GE-47716 Vac-N-Fill Coolant Refill Tool - (May 12, 2005)
#05-00-89-029 Info - General Motors Dealership Critical Equipment Requirements and Recommendations - (May 3, 2005)
#00-08-46-002A Info - OnStar System Cellular Antenna Replacement Parts Availability - (Apr 12, 2005)
#99-09-40-004a Info - Top Tether Hardware Package for Child Restraint Seats - (Apr 12, 2005)
#03-05-24-001A Service Information Regarding Rear Brake Drum Wheel Cylinder Inspections - (Mar 21, 2005)
#05-00-89-018 Info - GM Parts Ordering System - (Mar 17, 2005)
#05-04-21-002 Info - Guidelines for Replacement of Transfer Case Control Module (TCCM) - (Mar 10, 2005)
#05-04-21-001 Information on Excessive Use of RTV Silicone Sealant on New Venture Gear (NVG) and Borg Warner Transfer Cases During Service - (Mar 8, 2005)
#99-08-46-001A Info - OnStar Kit Part Numbers and Compatibility - (Mar 8, 2005)
#01-08-46-004A Info - Vehicle Integration of Cellular Phones and Normal Operating Characteristics - (Mar 8, 2005)
#01-08-46-001A Info - Required Reconfiguration on OnStar Modules After Replacement - (Mar 7, 2005)
#05-06-02-001 Information on Aluminum Heater Core and/or Radiator Replacement - (Feb 24, 2005)
#03-09-41-003A Info - Proper Air Bag System Diagnosis and Service - (Feb 9, 2005)
#00-08-46-003B Info - Global Position Sensor (GPS) Performance Degradation - (Feb 9, 2005)
#05-08-44-001 Info - Compact Disc (CD) or DVD Player Skipping, Inoperative, Sluggish and/or Long Search Times - (Jan 24, 2005)
#02-08-46-013A Info - OnStar Proactive Parts Shipment Process - (Jan 14, 2005)
#04-06-03-016 Info - Battery Specification Label - (Dec 13, 2004)
#04-00-89-057 Info - Shipping Enhancements for Owners Manuals and Service Manuals Ordered from Helm, Inc. - (Nov 18, 2004)
#04-08-46-002 Info - Radio Telephone/Mobile Radio (Transceiver) Installation and Troubleshooting Guidelines - (Oct 20, 2004)
#03-08-98-002A Info - Squeeze Type Resistance Spot Welding/Equipment - (Oct 11, 2004)
#02-08-42-001B Info - Chemical Damage to Exterior Polycarbonate Headlamp Lenses - (Oct 8, 2004)
#01-01-38-006D Info - Contaminated R-134a A/C Systems - Air Conditioning System Flushing Procedures and Universal In-Line A/C Filter Installation - (Sep 14, 2004)
#04-08-98-002 Info - Repair Procedure for Service Sheet Metal, Craters in ELPO Surface - (Aug 2, 2004)
#01-08-51-003A Info - Application of Anti-Corrosion Materials - (Jul 23, 2004)
#02-06-03-010A Info - Battery Parasitic Drain - (Jul 2, 2004)
#03-00-89-002A Info - New Owner Orientation Clinic Materials Now Available Online - (Jun 22, 2004)
#99-01-38-006B Info - J-43600 ACR 2000 Essential Refrigerant Recovery/Recharge Equipment - (Jun 22, 2004)
#04-08-98-001 Info - Additional Material and Source for Metal Panel Bonding Adhesives - (May 26, 2004)
#04-06-01-013 Information on Serpentine Belt Wear - (Apr 29, 2004)
#04-07-30-006 Info - 4L65-E, 4L60-E, 4L60 and 200-4R Automatic Transmission Oil Pump Spring First and Second Design Identification - (Feb 11, 2004)
#04-01-37-001 Info - HVAC Control Knob Replacement - (Jan 6, 2004)
#03-00-89-039 Info - Search Tips for Locating Preliminary Information (PI) Documents in Service Information - (Nov 11, 2003)
#01-01-38-013A Diagnostic Information to Consider Before Air Conditioning Compressor Replacement - (Oct 29, 2003)
#01-08-97-001B Info - HomeLink Transceiver/Garage Door Opener Transmitter Test Kit Available As Essential Tool - (Jul 14, 2003)
#01-01-39-003A Info - J 44551 A/C Suction Screen Kit Repair Recommendations and Procedures After Catastrophic Compressor Failures - (Jul 14, 2003)
#03-07-30-027 Info - Most Frequently Asked Questions and Answers for J 45096 TransFlow Transmission Oil Cooling System Flushing Machine - (Jun 25, 2003)
#03-00-89-010 Info - Bulletins Released Week of April 14, 2003 and Car and Truck Fix It Right the First Time Issues - (Apr 24, 2003)
#99-01-39-007B Info - Automatic Air Conditioning Control Operation - (Mar 14, 2003)
#03-00-89-005 Info - Changes to Essential and Available Tool Numbering System - (Mar 7, 2003)
#03-01-38-001 Info - A/C Refrigerant System Sealer and A/C System Leak Detection Guidelines - (Mar 7, 2003)
#03-06-01-006 Info - Powertrain Quality Center for Performance Parts Engine Replacements - (Feb 27, 2003)
#99-07-30-017A Info - Automatic Transmission Oil Cooler Flushing and Flow Check Procedures - (Jan 29, 2003)
#03-06-04-008 Info - Exhaust Gas Recirculating (EGR) Valve Cleaning Prior to Potential Replacement - (Jan 13, 2003)
#02-06-03-012 Proper Diagnostic Procedures for No Start, No Crank, Battery, Batteries, Generator, Gauges, SES, SIR, Brake, Security, Theft, ABS, Hot, DIC Messages, Lamp, Light, Battery and Generator Diag. Testing - (Oct 25, 2002)
#99-07-30-016B Diagnostic Information for Intermittent Transmission Downshift, Slip, Busy/Cycling TCC or Noisy Cooling Fan - (Oct 14, 2002)
#02-04-21-007 Info - Release of New Tool J 45380 - Rear Output Shaft Bushing Remover and Installer - (Sep 11, 2002)
#02-06-01-028 Info - Engine Crankcase Flush - (Aug 9, 2002)
#02-00-89-008 Info - Preliminary Information (PI) Text Available in Service Information (SI) - (Jul 19, 2002)
#02-08-98-003 Info - Expandable Acoustic Foam (Two Component Sound Dampener) Usage with Collision Damage Repairs - (Jun 21, 2002)
#02-06-01-026 Info - Engine Identification Information - (Jun 13, 2002)
#02-07-30-028 Info - Automatic Transmission Serial Number and Site Code Locations - (Jun 13, 2002)
#02-09-41-001 Info - DTCs B1001, B1271 or B1780 Set When Replacing/Reprogramming Other Modules - (May 24, 2002)
#02-06-01-008 Information on a New Engine Preluber Tool - (Feb 27, 2002)
#02-06-01-006 Info - Correct Amount of Engine Oil Needed to Raise Level From Low Mark to Full on Engine Oil Level Indicator (Dipstick) - (Feb 11, 2002)
#02-08-68-001 Info - Normal Operating Charadteristics of Cruise Control System - (Feb 11, 2002)
#01-03-10-011 Info - Tire Sidewall Damage - (Dec 18, 2001)
#01-08-97-002 Info - Programming the HomeLink Transmitter - (Nov 14, 2001)
#01-06-04-044 Info - Test Guidelines for Use of Essential Tool J41413-200 Evaporative System Tester - (Nov 14, 2001)
#00-04-20-001A Info - 2-Cut vs. 5-Cut Rear Axle Ring and Pinion Gearsets - (Oct 19, 2001)
#01-02-32-009 Info - New Power Steering System Analyzer Adapters From Kent Moore - (Oct 9, 2001)
#00-06-04-011A Info - Evaporative Emissions DTC P0440, P0441, P0442, P0446 - (Oct 4, 2001)
#01-09-40-002 Info - Seat Belt System Replacement Guidelines for Vehicles Involved in Collisions - (Jun 21, 2001)
#01-01-38-008 Info - Heating, Ventilation and Air Conditioning (HVAC) - Normal Operational Characteristics - (May 23, 2001)
#01-00-89-009 Info - Replacement of Keys, Key Numbers and/or Security Chips - (May 8, 2001)
#01-02-32-004 Info - Guidelines for Use of Essential Tool J 44721 Power Steering System Analyzer - (Apr 9, 2001)
#01-00-89-008 Info - Current CIPS Campaign Number to Previous DIvisional Campaign Number - (Apr 6, 2001)
#01-00-89-006 Info - February, 2001 Bulletin Summary - (Mar 2, 2001)
#01-08-67-001 Info - Replacement Keys for Roof Rack Cross Rails - (Feb 27, 2001)
#01-06-04-010 Info - Product Enhancements to Improve Slow/No Start Conditions in Extreme Cold Weather - (Feb 15, 2001)
#01-06-01-006 Info - Diagnosing Engine Oil Leak Into Spark Plug Wells - (Feb 8, 2001)
#01-01-38-002 Info - HVAC Pollen Air Filter - (Feb 8, 2001)
#01-00-90-001A Info - Recommended Rear Axle Lubricant - (Feb 8, 2001)
#01-00-89-005 Info - January, 2001 Bulletin Summary - (Feb 2, 2001)
#01-00-89-001 Info - December, 2000 Bulletin Summary - (Jan 3, 2001)
#00-00-89-030 Info - November, 2000 Bulletin Summary - (Dec 4, 2000)
#00-00-89-028 Info - October. 2000 Bulletin Summary - (Nov 2, 2000)
#00-00-90-001 Info - The Importance of Chassis Lubrication - (Oct 24, 2000)
#00-00-89-024 Info - September, 2000 Bulletin Summary - (Oct 6, 2000)
#00-01-38-007 Info - Correct Diagnostic Procedure When Reviewing A/C Performance/Leak Suspected - (Sep 21, 2000)
#00-00-89-022 Information - August, 2000 Bulletin Summary - (Sep 5, 2000)
#00-00-89-018 Info - July, 2000 Bulletin Summary - (Aug 8, 2000)
#00-01-38-006 Info - Essential Tool J 43600 ACR 2000 - (Aug 3, 2000)
#99-09-40-002A Information - Rear Seat Belt Buckle Identification and Correct Positioning - (Jul 6, 2000)
#00-00-89-016 Information - June, 2000 Bulletin Summary - (Jul 6, 2000)
#00-06-03-006 Info - California Consent Order on Settlement of Lawsuit on Batteries (Prop 65) - (Jun 8, 2000)
#00-00-89-013 Info - May, 2000 Bulletin Summary - (Jun 6, 2000)
#00-06-04-021 Info - Proper Service of Quick Connect EVAP System Connectors - (May 15, 2000)
#00-05-22-004 Info - Brake Fluid Level and Filling Recommendations - (May 8, 2000)
#00-00-89-011 Info - April, 2000 Bulletin Summary - (May 3, 2000)
#00-00-89-007 Info - March, 2000 Bulletin Summary - (Apr 4, 2000)
#00-00-89-006 Info - February, 2000 Bulletin Summary - (Mar 14, 2000)
#00-09-41-002 Info - Frontal SIR On-Off Switch Kits, New Parts and Procedures - (Jan 13, 2000)
#99-09-41-004 Info - Frontal SIR On-Off Switch Kits, New Parts and Procedures - (Jan 4, 2000)
#99-00-89-024 Information on 2000 bill 101 French Label Installation Procedure - (Dec 22, 1999)
#99-06-04-060 Info - Reprogramming PCM PASS THRU - (Dec 10, 1999)
#99-00-89-022 Info - The Year 2000 (Y2K) and Vehicle Electronics - (Dec 6, 1999)
#99-03-10-104 Info - Improper Tire Pressure - (Oct 28, 1999)
#99-08-42-009 Info-Proper Setting of IP Dimmer to View PRNDL w/Auto Headlamp Control - (Oct 26, 1999)
#99-06-04-053 Info - PCM Reprogramming - (Oct 26, 1999)
#99-06-03-011 Informational - CS-144 Generator Replacement - (Oct 22, 1999)
#99-06-02-017 Info - Radiator Repair/Replacement Guidelines - (Oct 20, 1999)
#99-08-44-008 Info - Cassette Player Cleaning and Maintenance - (Oct 6, 1999)
#99-00-89-018 Info - Changes in GM Service Information for the 2000 Model Year - (Sep 24, 1999)
#99-04-21-006 Info - Improved Automatic Transfer Case Fluid - (Sep 2, 1999)
#99-08-44-007 Info - Fixed Mast Antenna Installation Torque Requirements - (Aug 6, 1999)
#99-00-89-014 Info - Location of Diagnosis in the Service Manuals - (Aug 4, 1999)
#99-08-44-006 Info - Compact Disc (CD) Players and Compatible CDs - (Jul 29, 1999)

Service Administrative Message
#VSS20040057-01 Adm Msg - Wheel Alignment Questionnaire (Fax Number Change) - (Mar 23, 2004)
#WIW20020026 Adm Msg - New Labor Time Guide Available Effective February 1, 2003 - (Dec 16, 2002)
#VSS20020120 Adm Msg - Important Programming/TIS Information for Technicians (Admin Number 20020120 - 9/10/02) - (Sep 23, 2002)

Service Manual Update
#05-00-90-010 SMU - Revised Front Drive Axle Carrier Lubricant Information - (Dec 7, 2005)
#04-06-04-083 SMU - Revised DTC P0420 Catalyst System Low Efficiency - (Nov 12, 2004)
#02-08-47-001 SMU - Revised DTCs B1000, B1004, B1007, B1009, B1013 - (Jul 18, 2002)

Technical
#05-03-10-003C Low Tire Pressure, Leaking Cast Aluminum Wheels (Repair with Adhesive Sealant) - (Jan 15, 2008)
#03-06-04-030F Various Driveability Symptoms Due to Clogged Fuel Injectors, MIL/SES DTCs P0171, P0172, P0174, P0300, P1174, P1175 (Clean Fuel Injectors and/or Perform Injector Test With AFIT - CH-47976) - (Dec 10, 2007)
#07-06-01-023 60 Degree V6 Engine Oil Leak at Crankshaft Front Oil Seal (Use New Crankshaft Front Oil Seal Installer Tool EN-48869) - (Dec 5, 2007)
#05-06-01-019F Engine Oil Leak at Crankshaft Rear Main Oil Seal (Install Revised Crankshaft Rear Main Oil Seal Using Revised Rear Main Seal Installer and Remover Tools) - (Oct 2, 2007)
#99-01-39-004B Air Conditioning Odor (Install Evaporator Core Dryer Kit and Apply Cooling Coil Coating) - (May 29, 2007)
#05-08-51-008B Bumps or Rust Colored Spots in Paint Due to Rail or Iron Dust (Remove Rail Dust) - (Apr 23, 2007)
#01-07-30-032D Transmission Oil Leaking From Transmission Vent (Replace Transmission Case Cover (Channel Plate) Gasket) - (Oct 30, 2006)
#01-07-30-038D Diagnostic Trouble Code (DTC) P0757 Set, Malfunction Indicator Lamp (MIL) Illuminated, Poor Performance of Transmission/Slipping (Clean Transmission Valve Body and Case Oil Passages of Debris) - (Sep 12, 2006)
#04-07-30-028A 4T65-E Automatic Transmission Fluid Leak from Reverse Servo Cover (Replace Reverse Servo Cover Seal) - (Jan 12, 2006)
#01-07-30-002E MIL On, Transmission Stuck in Second or Third Gear, IPC Inoperative, DTCs P0740,P0753,P0758,P0785,P0787,P0973,P0976,P1860,P2761,P2764 and/or P2769 Set (Verify and Repair Source of Voltage Loss - (Sep 23, 2005)
#04-08-49-018E Cranks But No Start, Stall, Inaccurate/Incorrect Fuel Gauge Reading, No Fuel, Vehicle is Out of Fuel and Fuel Gauge Reads Above Empty (Replace Fuel Level Sensor) - (Jan 5, 2005)
#01-08-63-004A Creaking or Popping Type Sound from Front End or Suspension When Driving Over Bumps or in Tight Turns (Remove Road Debris from Between Front Inner Fender and Strut Support) - (Dec 20, 2004)
#00-07-30-022C No Reverse, Second Gear or Fourth Gear (Replace Reaction Sun Shell with More Robust Heat Treated Parts) - (Dec 10, 2004)
#01-06-01-015A Serpentine Belt Frayed and/or Belt Squeal (Adjust Power Steering Pump Bracket and Replace Serpentine Belt) - (Dec 4, 2003)
#00-06-01-006D Engine Tick Noise (Replace Valve Lifters) - (Sep 11, 2003)
#03-05-23-001 Brake Pulsation/Vibration, Contamination/Corrosion Between Hub and Rotor and/or Drum and Axle Flange (Clean Rotor and Hub and/or Drum and Axle Flange Mounting Surfaces) - (Jan 15, 2003)
#02-08-64-004 Window Binds/Glass Tips Forward When Opening (Remove Section of Weatherstrip - (Feb 21, 2002)
#02-08-45-001 Dome Lamp, Daytime Running Lamps and/or Dome Lamp Time Delay Inoperative (Repair Connection at G200) - (Jan 28, 2002)
#01-02-35-007 Ignition Key Binds in Accessory Position (Install Slider Repair Kit) - (Oct 3, 2001)
#01-08-49-011 Squeak or Rattle in Instrument Panel Bezel (Add Insulating Tape) - (Jul 27, 2001)
#01-08-44-002 Technical - Front Door Speaker Rattle/Vibration (Reposition Window Regulator Handle Plate (Escutcheon)) - (Feb 21, 2001)
#01-04-17-002 Driveline Vibration (Inspect and Align Propeller Shaft) - (Feb 16, 2001)
#00-04-21-002 High Transfer Case Shift Effort (Replace Sync. Hub/Sleeve Assm., Ring, Shaft) - (Dec 6, 2000)
#00-08-62-004 Rear Bumper Ends Loose at Wheel Openings (Install New Fasteners) - (Nov 22, 2000)
#99-08-59-002A Creaking Type Sound from Right Rear Wheel Opening Area (Reposition Sheet Metal) - (Nov 16, 2000)
#00-07-30-023 High Accelerator Pedal Effort (Replace Throttle Valve Control (TV) Cable) - (Nov 10, 2000)
#00-06-02-007 Howl Type Noise From Engine (Replace Cooling Fan Clutch) - (Oct 27, 2000)
#00-06-01-022 Engine Noise (Replace Belt Tensioner) - (Oct 16, 2000)
#00-08-51-001 Outside Rear View Mirror Housing Turns Chalky/Dull (Color/Clear Coat Mirror) - (Aug 25, 2000)
#00-07-29-001 4-3 Downshift Gear Clash, 1-2 Gear Upshift Clash (Replace Affected Gear) - (Aug 24, 2000)
#00-01-38-002A A/C Not Cold Enough/Inop (Replace O-Rings/Recharge System) - (Jul 21, 2000)
#00-08-68-001 Transmission Will Not Upshift after Downshift (Replace Cruise Control Module) - (Mar 28, 2000)
#00-06-04-013 Rough/Unstable Idle During Engine Warm Up (Reprogram PCM) - (Mar 15, 2000)
#00-06-02-001 Engine Runs Hot, Overheats, Loss of Coolant (Polish Filler Neck/Replace Radiator Cap) - (Jan 5, 2000)
#99-08-45-005 Accessory Receptacle is Inoperative (Check Aftermarket Device Plug) - (Nov 8, 1999)

[Bishop]

DTC P0300 Engine Misfire Detected - calls out a bad CMP (Camshaft Position sensor) but not a CKP (Crankshaft Position) sensor. Doesn't mean it can't happen.

DTC P0300 Engine Misfire Detected

Refer to Ignition System and CMP and CKP Sensors .

Circuit Description
The powertrain control module (PCM) uses information from the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor in order to determine when an engine misfire is occurring. By monitoring changes in the crankshaft rotation for each cylinder, the PCM counts individual misfire events. The malfunction indicator lamp (MIL) illuminates when the misfire rate equals or exceeds a pre-determined count. A misfire rate that is high enough can cause the catalytic converter to overheat under certain driving conditions. The MIL will flash ON and OFF when the conditions for catalytic converter overheating are present.

Condition for Running the DTC
Engine must be running.

Conditions for Setting the DTC
Engine coolant temperature is more than -7°C (19°F).
Intake air temperature is more than -7°C (19°F).
Barometric pressure is more than 75 kPa.
Engine speed is less than 4,000 RPM.
Fuel tank level is more than 15 percent.
TP sensor change is less than 1 degree/10 ms.
Conditions present for 5 seconds after engine start to 1 second from fuel shut-off.
Action Taken When the DTC Sets
The PCM flashes the malfunction indicator lamp (MIL) the first time catalytic converter damage occurs.
The PCM illuminates the MIL the second time emission thresholds are exceeded (second time the diagnostic fails).
The PCM records the operating conditions at the time the diagnostic fails. This information is stored in the Freeze Frame buffer.
Conditions for Clearing the MIL/DTC
The MIL turns OFF after three consecutively passing trips without a fault present.
A History DTC clears after 40 consecutive warm-up cycles without a fault.
Use the scan tool Clear DTC Information function or disconnect the PCM battery feed in order to clear the DTC.
Diagnostic Aids
Check for any of the following conditions:

If any DTCs other than misfire (P0300 to P0304) are present, diagnose those DTCs first.
Check for engine overheating.
Check for engine vacuum leaks.
Inspect for proper EGR system operation. An EGR valve that is introducing too much exhaust gas into the combustion chamber can lower cylinder power output.
A PCV system malfunction -- Perform a functional check of the PCV valve. Refer to Crankcase Ventilation System Inspection .
Check for a malfunctioning fuel injector. Normal fuel injector resistance is 13-16 ohms at 20°C (68°F). Perform the Fuel Injector Coil Test/Balance Test Procedure if fuel injector resistance is out of specification. Refer to Fuel Injector Coil Test - Engine Coolant Temperature (ECT) Outside 10-35 Degrees C (50-95 Degrees F) .
Fuel pressure that is out of specification -- Refer to Fuel System Diagnosis .
An intermittent ignition system malfunction (spark plugs, ignition wires, ignition coils). Check ignition system performance with an engine oscilloscope.
An engine mechanical malfunction -- Measure engine cylinder compression and valve lash adjustment for comparison to manufacture specifications. Refer to Engine Compression Test in Engine Mechanical.
A damaged wiring harness -- Inspect the applicable wiring harness for damage and repair as necessary.
A misfire DTC can also be the result of a defective crankshaft timing belt pulley. Remove the crankshaft position (CKP) sensor and inspect the crankshaft signal rotor through the sensor hole. Check the crankshaft timing belt pulley for foreign material or damaged teeth.
If the DTC P0300 is intermittent, driving the vehicle under the following conditions can verify whether the fault is present. Perform the scan tool Clear DTC Information function. Road test the vehicle while monitoring the DTC P0300 diagnostic on the scan tool under the Not Ran Since Code Cleared selection in the DTC Information menu. If a DTC P0300 appears in the Not Ran Since Code Cleared list, the P0300 diagnostic has not yet run. When the DTC P0300 does not appear in the Not Ran Since Code Cleared list, the P0300 diagnostic has run. If the MIL is NOT ILLUMINATED and there is no PENDING DTC Status in DTC Information, the P0300 diagnostic has passed. DTCs MUST BE CLEARED in order to view the CURRENT STATUS of the Not Ran Since Code Cleared list. DO NOT FORGET that the Not Ran Since Code Cleared list only indicates that the test has run, not whether the test passed or failed. The DTC Information screen must be checked for CURRENT or PENDING status, in order to determine the outcome of the diagnostic test involved.

If you cannot duplicate a DTC P0300, the information included in the Freeze Frame data can be useful in determining vehicle operating conditions when the DTC was first set. When the fault cannot be duplicated, wet the secondary ignition system with water and operate the vehicle under the conditions that set the DTC.

Test Description
The numbers below refer to the step numbers in the diagnostic table.

1. The Powertrain OBD System Check prompts the technician to complete some basic checks and store the Freeze Frame data on the scan tool if applicable. This creates an electronic copy of the data taken when the fault occurred. The information is then stored in the scan tool for later reference.

3. This step determines if a fault is present.

5. The ignition coil assemblies provide spark for two cylinders simultaneously. Any condition that effects the ignition circuit of one cylinder may also have an affect on the ignition circuit of the other (paired) cylinder. Inspect both sides of the ignition coil high voltage circuit for faulty conditions.

6. The ignition coil assemblies provide spark for two cylinders simultaneously. Any condition that effects the ignition circuit of one cylinder may also have an affect on the ignition circuit of the other (paired) cylinder. Inspect both sides of the ignition coil high voltage circuit for faulty conditions.

8. The #1 ignition coil provides spark for cylinders 1 and 4 simultaneously. The #2 ignition coil provides spark for cylinders 2 and 3 simultaneously. Any condition that effects the ignition circuit of one cylinder may also have an affect on the ignition circuit of the other cylinder that shares the same coil. Inspect both sides of the ignition coil for cracks, carbon tracking, and corrosion.

9. The ignition coil may have an internal fault.

11. This step checks for the electrical signal from the PCM for the operation of the fuel injector. If the injector test lamp does not illuminate the fuel injector control circuit is diagnosed for a faulty condition.

12. Faulty fuel injectors can cause a misfire condition and a DTC P0300 to set.

15. This step checks for a mechanical fault as the cause of the misfire condition. Low engine compression and improper valve lash may also cause a rough idling condition. For diagnosis of an engine mechanical condition, refer to Engine Mechanical.

16. This step checks for faults in the CMP sensor and circuit that can cause incorrect ignition reference signals. Without continuous accurate reference signals, there is no dependable spark or fuel injector pulse. Erratic, missing, or incorrect engine reference signals can cause the engine to misfire.

17. This step checks for a faulty CMP sensor signal rotor.

Step
Action
Value(s)
Yes
No

1
Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?
--
Go to Step 2
Go to Powertrain On Board Diagnostic (OBD) System Check

2
Start the engine.

Is a misfire present at idle?
--
Go to Step 4
Go to Step 3

3
Install a scan tool.
Turn ON the ignition, leaving the engine OFF.
Perform the scan tool Clear DTC Information function.
Operate the vehicle within the Freeze Frame data as noted.
Is a DTC P0300 set?
--
Go to Step 4
Go to Diagnostic Aids

4
Perform a visual and a physical inspection for any of the following conditions:
- Improperly operating or leaking PCV valve

- Incorrect PCV valve

- A vacuum leak at the intake manifold or gasket

- A vacuum leak at a cracked, split, or worn vacuum hose

Repair as necessary.
Was a repair necessary?
--
Go to Step 18
Go to Step 5

5
Disconnect the fuel injector electrical connectors.
Install a J 26792 spark tester or an equivalent to the #1 spark plug wire.
Check for spark while cranking the engine.
Remove the #1 ignition coil.
Re-install the spark plug wire.
Install the spark tester to the ignition coil boot.
Check for spark while cranking the engine.
Repeat steps 2 thru 7 for the #2 ignition coil.
Did the test of each cylinder indicate a good crisp blue spark while cranking the engine?
--
Go to Step 10
Go to Step 6

6
Remove the ignition wires and ignition coil spark plug boots.
Visually and physically inspect the ignition wires and boots for any of the following conditions:
- Carbon tracking

- Insulation damage

- Corroded terminals

Repair as necessary.
Was a repair necessary?
--
Go to Step 18
Go to Step 7

7
Measure the resistance of the ignition wires with a DMM.
Replace any ignition wires that measure more than the specified value.
Did any ignition wires need replacement?
1.2k to 3.0k ohms/ft
Go to Step 18
Go to Step 8

8
Perform a visual and a physical inspection of the ignition coils for any of the following conditions:
- Cracks

- Moisture

- Faulty electrical connections

- Carbon tracking

- Corrosion

Repair as necessary.
Was a repair necessary?
--
Go to Step 18
Go to Step 9

9
Replace the ignition coil that supplies the cylinder that had no spark. Refer to Ignition Coil(s) Replacement .

Is the action complete?
--
Go to Step 18
--

10
Remove the spark plugs. Refer to Spark Plug Replacement in Engine Electrical.
Visually and physically inspect each spark plug for any of the following conditions:
- Oil fouling

- Fuel fouling

- Evidence of coolant in the cylinder

- Incorrect gap

- Missing platinum pads

- Loose center electrode

- Cracked porcelain

- Carbon tracking

- Loose terminal end

Replace as necessary. Refer to Spark Plug Replacement in Engine Electrical.
Did any spark plugs need replacement?
--
Go to Step 13
Go to Step 11

11
Turn OFF the ignition.
Disconnect the fuel injector electrical connectors.
Install a J 34730-2B injector test lamp or an equivalent into the each of the fuel injector harness connectors one at time.
Observe the injector test lamp for each injector while cranking the engine.
Did the fuel injector test lamp flash for each fuel injector while cranking the engine?
--
Go to Step 12
Go to Fuel Injector Circuit Diagnosis

12
Check the fuel injectors for proper operation. Refer to Fuel Injector Coil Test - Engine Coolant Temperature (ECT) Between 10-35 Degrees C (50-95 Degrees F) and Fuel Injector Balance Test .

Was a faulty fuel injector found and replaced?
--
Go to Step 18
Go to Step 14

13
Was the spark plug replaced because of fuel, oil, or coolant fouling?
--
Go to Step 15
Go to Step 18

14
Inspect the EGR valve for excessive flow or sticking open. Refer to DTC P0400 EGR Flow Malfunction .
Repair as necessary.
Was a repair necessary?
--
Go to Step 18
Go to Step 15

15
Check for any of the following engine mechanical concerns:
- Worn or faulty camshaft

- Leaky or sticky valves

- Excessive valve deposits

- Broken or leaky piston rings

- Weak valve springs

- Incorrect valve timing

- Intake (vacuum) leaks

- Leaking head gasket

- Loose or broken motor mounts

Repair as necessary. Refer to Engine Compression Test in Engine Mechanical.
Was a basic engine mechanical concern found and repaired?
--
Go to Step 18
Go to Step 16

16
Remove the CMP sensor. Refer to Camshaft Position (CMP) Sensor Replacement .
Visually inspect the CMP sensor for the following conditions:
- Physical damage

- Foreign material on the sensor (magnet) surface

- Water or corrosion at the electrical terminals

Repair as necessary.
Was a repair necessary?
--
Go to Step 18
Go to Step 17

17
Visually inspect the CMP sensor signal rotor in the camshaft sensor housing for the following conditions:
- Damaged teeth

- Foreign material

- Correct installation

Repair as necessary.
Was a repair necessary?
--
Go to Step 18
Go to Diagnostic Aids

18
Perform the scan tool Clear DTC Information function and road test the vehicle within the Freeze Frame conditions that set the DTC.
Review the scan tool data and check for DTCs. The repair is complete if no DTCs are stored.
Are any DTCs displayed on scan tool?
--
Go to Diagnostic Trouble Code (DTC) List
System OK

[Bishop]

The P0300 code I posted is for the flashing MIL.
But anything that can cause a moderate to severe miss can be the culprit.
A bad plug, plug wire, plug wire off, valve, broke ring, piston, etc.

Worse hot sounds a little like a sensor or maybe a stuck EGR.

If you are near Orlando, I can bring a scan tool. I will be there Thursday-Sunday at the Speedworld.

I know about those Florida techs, paid them $500 in Key West last year to change some cat converters on a GM test Vue last year.

Randy

[MaddMike]

Start with the basics.

Do you have a trouble code?

How many miles? And has it had the appropriate maintenance for that mileage? (Fuel filter, and ignition components, spark plugs, cap and rotor if equipped, etc...)

Those are the common causes of misfires. So start there. A can of Chevron/Techron Fuel injector cleaner can't hurt either (It's the brand that makes the cleaner that GM uses).

These are things that may not fix your problem, but could... Not wasted money anyhow IMO...
Mike

[governor]

Chris,

If it was raining or real humid, raise the hood at night and look for ign cross fire. If you see ANY you need new wires, cap, rotor etc and may as well change plugs while you are there.

If it's dry now spray the wires, cap, etc with some water from a spray bottle and look for the above.

The, Governor / Dan Logan

[racer72]

my 92 and 94 caviliers had problems with ignition modules and coils. So did my 99 Pontiac. All four cylinders. cracked coils usually showed up in the rain.

[Bobracer5]

Chris just come on over here to Jon Hall Chevrolet in Daytona and I will sell you a new Chevy and you wont need to worry about anymore problems.

[MaddMike]

Some of the parts stores now may be able to pull a code for you...Not positive, but check out some of the newer stores...A code would be helpful but it's probably just going to give you a generic missfire code (p0300)

Start with ignition components as well. The symptoms fit better...unless you think you may have gotten some bad fuel...(water)

Mike

[MaddMike]

I'd hold out until they bring back the Datsun name...

[stribeckracing]

Some of the parts stores now may be able to pull a code for you...Not positive, but check out some of the newer stores...A code would be helpful but it's probably just going to give you a generic missfire code (p0300)

Start with ignition components as well. The symptoms fit better...unless you think you may have gotten some bad fuel...(water)

Mike

I know AutoZone will pull codes for you.