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 provide an overview of each diagnostic category.

Circuit/System Description

The rear seat audio (RSA) feature allows rear seat passengers to listen to a different audio program than the front seat passengers. When RSA is on the rear vehicle speakers are muted, and the rear passengers can select their own audio program to listen to using the headphones.

Reference Information

Schematic Reference

Radio/Navigation System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Radio/Audio System Description and Operation

Electrical Information Reference

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

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Radio ON, verify clear audio is heard from each audio speaker with the RSA system OFF.

If audio is inoperative from one or all speakers, refer to Speaker Malfunction .

Circuit/System Testing

  1. Using a known good pair of wired headphones, plug them into both of the headphone jacks on the RSA controller.
  2. Radio ON, RSA ON, cylcle through several sources and listen for audio. Adjust appropriate volume control.
  3. If no audio is heard through the headphones, replace the RSA controller.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Rear Seat Audio Control Replacement
    •  Control Module References for Amplifier and Radio replacement, setup, and programming