GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Envoy - 4WD 🢒 Body and Accessories 🢒 Entertainment 🢒 Steering Wheel Control System Check

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 following:
    4. • VOL up.
    • VOL DWN.
    • Mute.
    • Seek up.
    • Seek DWN.
    • Preset.

All functions of the steering wheel controls operate.

Steering Wheel Controls Inoperative

2
    • Turn the headlamp switch to the parklamp position.
    • Adjust the dimmer switch to the FULL bright position.

Switch assemblies are illuminated.

Steering Wheel Controls Illumination Inoperative

3

No abnormal results were found while performing the System Check.

The system is OK.

Intermittents and Poor Connections Diagnosis

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