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

Important: Before performing this diagnostic select the proper channel by switching the channel selector located on the side of the headphones to A or B and verify the volume is turned up. Also verify that the headphones are not in mute mode. Press the Sound Around ON/OFF button on the remote to change audio muting status.

  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. Turn ON the wireless headphones. Verify the power indicator lamp on both wireless headphones illuminates.
  4. If the power indicator lamp does not illuminate on one or more wireless headphones, check or replace the wireless headphone batteries. If the batteries are OK replace the suspect wireless headphone set.
  5. Operate the DVD player in play mode. Set both wireless headphones to the proper channel. Adjust the volume up on both wireless headphones. Verify that only one set of wireless headphones operate properly.
  6. If only one set of wireless headphones do not have audio, replace the suspect wireless headphone set. If both wireless headphones are inoperative replace the suspect display containing the infra-red port.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Refer to the accessory installation instructions for replacement.