Computers and Control Systems: Technical Service Bulletins

• Customer Interest
  • Electrical - MIL ON/DTC's Set By Various Control Modules
  • Electrical - Intermittent MIL/DTC P2138/Reduced Power
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Instruments - Telltale Lights/Digital Displays Erratic
  • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
  • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
  • Engine Controls - Poor Performance in Diagnostic Mode
  • ECM - Driveability Concerns/Erratic Warning Lamps
    • Overview
    • Conditon and Cause
    • Correction:
      • A.Loss of Power or Ground to the ECM
      • B.Large Voltage Variations On Vehicle Power and Ground Wires
      • C.Large Voltage Variations On ECM Connected Signal Wires
  • Starting - Dead Battery/No Crank After Overnight Set
• By Symptom
  • Abnormal wear/deterioration
    • Electrical - MIL ON/DTC's Set By Various Control Modules
    • Electrical - Intermittent MIL/DTC P2138/Reduced Power
    • ECM - Tap Test Precautions
  • Customer Interest
    • Electrical - MIL ON/DTC's Set By Various Control Modules
    • Electrical - Intermittent MIL/DTC P2138/Reduced Power
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
    • Instruments - Telltale Lights/Digital Displays Erratic
    • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
    • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
    • Engine Controls - Poor Performance in Diagnostic Mode
    • ECM - Driveability Concerns/Erratic Warning Lamps
      • Overview
      • Conditon and Cause
      • Correction:
        • A.Loss of Power or Ground to the ECM
        • B.Large Voltage Variations On Vehicle Power and Ground Wires
        • C.Large Voltage Variations On ECM Connected Signal Wires
    • Starting - Dead Battery/No Crank After Overnight Set
  • Driveability
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
    • Warranty - Driveability Problems From Add On Equipment
    • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
    • Engine Controls - Poor Performance in Diagnostic Mode
  • Erratic Operation
    • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
  • Erratic Shifting
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Low, Dead battery
    • Starting - Dead Battery/No Crank After Overnight Set
  • Starting problems
    • Starting - Dead Battery/No Crank After Overnight Set
• All Technical Service Bulletins
  • Engine - THIS BULLETIN HAS BEEN CANCELED
  • Electrical - MIL ON/DTC's Set By Various Control Modules
  • Electrical - Intermittent MIL/DTC P2138/Reduced Power
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Warranty - Driveability Problems From Add On Equipment
  • Instruments - Telltale Lights/Digital Displays Erratic
  • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
  • Oxygen Sensor Test - Revised Tech 1 Mass Storage CD
  • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
  • Engine Controls - Poor Performance in Diagnostic Mode
  • ECM - Driveability Concerns/Erratic Warning Lamps
    • Overview
    • Conditon and Cause
    • Correction:
      • A.Loss of Power or Ground to the ECM
      • B.Large Voltage Variations On Vehicle Power and Ground Wires
      • C.Large Voltage Variations On ECM Connected Signal Wires
  • ISC/TPS - System Operation
  • ECM - Tap Test Precautions
  • Starting - Dead Battery/No Crank After Overnight Set
  • Oxygen Sensors - Silica Contamination
  • PROM/MEMCAL - Identification Marks