Power and Ground Distribution: Technical Service Bulletins

• Customer Interest
  • OnStar(R) - System Inop/No LED/No Power
  • 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation
  • Audio System - Speaker Buzzing in 4X4 Mode
  • Electrical - MIL ON/DTC's P0480/P0526/P1481 Set
• By Symptom
  • Abnormal wear/deterioration
    • Electrical - MIL ON/DTC's P0480/P0526/P1481 Set
  • Customer Interest
    • OnStar(R) - System Inop/No LED/No Power
    • 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation
    • Audio System - Speaker Buzzing in 4X4 Mode
    • Electrical - MIL ON/DTC's P0480/P0526/P1481 Set
  • Erratic Operation
    • 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation
  • Inoperative
    • OnStar(R) - System Inop/No LED/No Power
    • 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation
  • Noise
    • Audio System - Speaker Buzzing in 4X4 Mode
• All Technical Service Bulletins
  • Electrical - Terminal Probe Test Kit Information
  • Electrical - Inspect Connectors for Various Malfunctions
  • OnStar(R) - System Inop/No LED/No Power
  • 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation
  • Audio System - Speaker Buzzing in 4X4 Mode
  • Electrical - MIL ON/DTC's P0480/P0526/P1481 Set