GM Service Manual Online
For 1990-2009 cars only

Diagnostic Instructions

    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Reference Information

Schematic Reference

Video System Schematics

Connector End View Reference

Entertainment/Communication Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Circuit/System Testing

  1. Verify there are no obstructions that may block the infra-red port located above the video display screen.
  2. If an obstruction exists, remove the obstruction.
  3. Operate the DVD player in play mode. Press multiple buttons on the remote control in succession and verify the remote is inoperative on every button pressed.
  4. If the remote is inoperative, replace the remote batteries.
    If remote batteries are OK and remote remains inoperative, test with known good remote or replace the remote.
  5. Replace the suspect display screen containing the infra-red port if the remote and batteries are OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Refer to the accessory installation instructions for replacement.