GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the system operation?

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Go to Step 2

Go to Symptoms

2

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

Does the test light illuminate?

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Go to Step 3

Go to Step 4

3

Repair a short to B+ in circuit 32.

Is the repair complete?

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Go to Step 5

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4

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

Is the repair complete?

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Go to Step 5

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5

Operate the system to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2