GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Preform Diagnostic System Check - Instrument Cluster

DTCs B2510, B2511 or B2515 are not current.

If DTCs B2510, B2511 or B2515 are current. Go to Diagnostic System Check - Instrument Cluster

2

  1. Turn the ignition switch to the RUN position
  2. Turn the radio ON.
  3. Momentarily hold each steering wheel control switch in the UP and then the DOWN position.

The desired function of the radio or climate control operates properly.

Steering Wheel Controls Inoperative

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