GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

Schematic Reference : Radio/Audio System Schematics

1

Did you perform the Radio/Audio System Diagnostic System Check?

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Go to Step  2

Go to Diagnostic System Check - Radio/Audio System

2

Operate all of the steering wheel controls.

Do all of the steering wheel controls operate properly?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step  3

3

Replace the appropriate steering wheel radio control.

Did you complete the replacement?

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Go to Step  4

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4

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step  1