Powertrain Management: Technical Service Bulletins

• Recalls
  • Emissions
    • Recall - Catalytic Converter Replacement
    • Recall - GEMS(R) Software Correction
  • Generals
    • Campaign - Oil Pressure Switch Replacement
• Customer Interest
  • Damaged Heated Oxygen Sensor (HO2S) Replacement
    • Overview
    • Repair Procedure
  • Coil Low Tension Lead - Engine Misfire
  • Ignition Switch - Does Not Return To Run Position
    • Overview
    • Repair Procedure
  • ECM/ABS ECU - DTC's P1317/P1703 Set
  • MIL ON at Low Temperature/Hard Acceleration
  • ECM - Engine Stalls When Cold, MIL ON
  • MIL ON DTC's P0130 & P0150 Set
  • False MIL ON DTC's P1775 & 23 Set
  • BeCM - Reverse Mirror Dip Condition
  • Ignition System - Hard Starting
  • Engine Controls - MIL ON/DTC 23 (Gearbox Fault)
  • Fuel System - Poor Throttle Response
  • Transfer Case - Will Not Shift/MIL ON
    • Overview
    • System Information
    • System Diagnosis
    • Diagnostic Checks
    • Repair Procedures
  • Fuel Gauge - Diagnostic Guidelines
    • Overview
    • Test Procedure
  • ECM - Intermittent Vehicle No Start
  • Ignition System - Hard Start/Rough Running/Misfire Codes
  • Engine - Hesitation, OBD Fault 17/DTC P0121 Set
  • Fuel System - Difficulty Refuelling
  • Ignition Timing - Poor Engine Performance
• By Symptom
  • Customer Interest
    • Damaged Heated Oxygen Sensor (HO2S) Replacement
      • Overview
      • Repair Procedure
    • Coil Low Tension Lead - Engine Misfire
    • Ignition Switch - Does Not Return To Run Position
      • Overview
      • Repair Procedure
    • ECM/ABS ECU - DTC's P1317/P1703 Set
    • MIL ON at Low Temperature/Hard Acceleration
    • ECM - Engine Stalls When Cold, MIL ON
    • MIL ON DTC's P0130 & P0150 Set
    • False MIL ON DTC's P1775 & 23 Set
    • BeCM - Reverse Mirror Dip Condition
    • Ignition System - Hard Starting
    • Engine Controls - MIL ON/DTC 23 (Gearbox Fault)
    • Fuel System - Poor Throttle Response
    • Transfer Case - Will Not Shift/MIL ON
      • Overview
      • System Information
      • System Diagnosis
      • Diagnostic Checks
      • Repair Procedures
    • Fuel Gauge - Diagnostic Guidelines
      • Overview
      • Test Procedure
    • ECM - Intermittent Vehicle No Start
    • Ignition System - Hard Start/Rough Running/Misfire Codes
    • Engine - Hesitation, OBD Fault 17/DTC P0121 Set
    • Fuel System - Difficulty Refuelling
    • Ignition Timing - Poor Engine Performance
  • Driveability
    • MIL ON at Low Temperature/Hard Acceleration
    • Ignition System - Hard Start/Rough Running/Misfire Codes
    • Engine - Hesitation, OBD Fault 17/DTC P0121 Set
  • Erratic Operation
    • Fuel Gauge - Diagnostic Guidelines
      • Overview
      • Test Procedure
  • False instrument warning light/gauges
    • False MIL ON DTC's P1775 & 23 Set
    • Engine Controls - MIL ON/DTC 23 (Gearbox Fault)
  • Recalls
    • Recall - Catalytic Converter Replacement
    • Recall - GEMS(R) Software Correction
    • Campaign - Oil Pressure Switch Replacement
• All Technical Service Bulletins
  • Damaged Heated Oxygen Sensor (HO2S) Replacement
    • Overview
    • Repair Procedure
  • Fuel Pump - Component Replacement
  • Engine - Misfire Diagnosis
    • Overview
    • Misfire General Checks
      • Overview
      • Check Fuel Pressure and Volume
    • Reluctor/Crankshaft Sensor Checks
      • Overview
      • Reluctor Test Automatic Transmission
      • Reluctor Test - Discovery Manual Transmission
    • Exhaust Valve Stick Tests
  • BeCM - Revised Message Center Display Operation
  • Coil Low Tension Lead - Engine Misfire
  • Ignition Switch - Does Not Return To Run Position
    • Overview
    • Repair Procedure
  • Fuel Injection - Misfire Diagnostics
    • Overview
    • Mechanical Tests
    • Fuel Injector Balance Check
    • Fuel Injector Electrical Checks Using P.A.C.
  • ECM/ABS ECU - DTC's P1317/P1703 Set
  • Temperature Gauge - Inaccurate/False DTC's Stored
    • Overview
    • Snap-on PAC Ground Check Instructions
  • MIL ON at Low Temperature/Hard Acceleration
  • ECM - Engine Stalls When Cold, MIL ON
  • MIL ON DTC's P0130 & P0150 Set
  • False MIL ON DTC's P1775 & 23 Set
  • Oxygen Sensor - Handling and Diagnosis
    • Overview
    • Connector Inspection
      • Overview
      • Removal and Installation
      • Snap Throttle Test of Upstream Sensors Using Bear Analyzer
  • HO2S - Handling and Diagnostic Procedures
    • Overview
    • Oxygen Sensor Response Chart
    • Snap Throttle Test
  • Wiring/Connectors - Troubleshooting & Repair
    • Overview
    • Connector Troubleshooting
    • Circuit Troubleshooting
    • Heated Oxygen Sensor (HO2S) Repair
    • Econoseal Anti-Backouts
  • Recall - Catalytic Converter Replacement
  • BeCM - Fault Questionnaire
  • BeCM - Reverse Mirror Dip Condition
  • Ignition System - Hard Starting
  • Data Link Connector - Replacement
  • Engine Controls - MIL ON/DTC 23 (Gearbox Fault)
  • Recall - GEMS(R) Software Correction
  • Fuel System - Poor Throttle Response
  • Transfer Case - Will Not Shift/MIL ON
    • Overview
    • System Information
    • System Diagnosis
    • Diagnostic Checks
    • Repair Procedures
  • Fuel Gauge - Diagnostic Guidelines
    • Overview
    • Test Procedure
  • Warranty - Diagnostic Trouble Code Report
  • Warranty Claims - MIL Event Requirements
  • Diagnostic Trouble Codes - Manual Updates
  • ECM - Intermittent Vehicle No Start
  • Suspension - Air Suspension Lamp ON/Inoperative
  • Ignition System - Hard Start/Rough Running/Misfire Codes
  • Engine - Hesitation, OBD Fault 17/DTC P0121 Set
  • Fuel System - Difficulty Refuelling
  • Ignition Timing - Poor Engine Performance
  • Campaign - Oil Pressure Switch Replacement