GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the Radio/Audio Description and perform the necessary inspections?

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Go to Step 2

Go to Diagnostic Starting Point

2

  1. Disconnect the radio.
  2. Place the headlamp switch in PARK.
  3. Turn the parade switch (first detent) ON.
  4. Connect a test lamp from CKT 1382 (PPL/WHT) at the radio to ground.

Does the test lamp illuminate?

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Go to Step 3

Go to Step 4

3

  1. Remove the radio. Refer to Radio Replacement .
  2. Send the radio in for repair.

Did you complete the replacement?

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Go to Step 5

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4

Repair the open in CKT 1382 (PPL/WHT) between the radio connector and the headlamp and the panel dimmer switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2