GM Service Manual Online
For 1990-2009 cars only

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to one of the following:

   •  Radio/Audio System Operation-Radio Controls
   •  Radio/Audio System Operation-Radio Controls
   •  Radio/Audio System Operation-Radio Controls
   •  Radio/Audio System Operation-Radio Controls
   •  Radio/Audio System Operation-Radio Controls
   •  Radio/Audio System Operation-Cassette Tape Player
   •  Radio/Audio System Operation-Cassette Tape Player
   •  Radio/Audio System Operation-Cassette Tape Player
   •  Radio/Audio System Operation-Compact Disc Player
   •  Radio/Audio System Operation-Compact Disc Player
   •  Radio/Audio System Operation-Theftlock
   •  Steering Wheel Controls System Operation
   •  Power Antenna System Description

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the Entertainment System. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

    •  Antenna Inoperative
    •  Radio Poor Reception
    •  Compact Disc Inoperative
    •  Radio Memory Inoperative
    •  Radio Display Inoperative, Speakers Operative
    •  Radio Display Inoperative, No Sound from Speakers
    •  Radio Illumination Inoperative with Park Lamps On
    •  Tape Player Inoperative
    •  Steering Wheel Controls Inoperative
    •  Steering Wheel Controls Illumination Inoperative
    •  Speaker Noise - General
    •  Speakers General Diagnosis
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - One or More
    •  Speakers Inoperative - Subwoofer