GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn the ignition switch to the RUN position.
  2. Turn the radio ON.
  3. Operate the radio from the radio control switches on the steering wheel.

The radio controls function normally.

Radio Inoperative with Steering Wheel Controls

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.