GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the headlamp switch to the OFF position.
  2. Using a test light, backprobe between the radio harness connector terminal F5 to ground.

Is the test light on?

--

Go to Step 2

Go to Step 3

2

Repair short to B+ in circuit 308.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

--

3

Service the radio. Refer to Radio Replacement for service procedure.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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