GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn the ignition switch to ACCY or RUN.
  2. Momentarily hold each steering wheel control switch in the UP, then DOWN position.

Response of each radio and climate control or cellular telephone (if equipped) control matches the switch marking.

Steering Wheel Controls Inoperative

2

  1. Turn the ignition switch to ACCY or RUN.
  2. Turn the steering wheel while momentarily holding each steering wheel control switch in the UP, then DOWN position.

Response of each radio and climate control or cellular telephone (if equipped) control matches the switch marking.

Steering Wheel Controls Inoperative

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