GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Radio/Audio System Check performed?

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Go to Step 2

Go to Radio/Audio System Check

2

  1. Disconnect the C1 connector at the radio.
  2. Connect an unpowered test lamp between radio connector C1 cavity 10 for CKT 1140 (ORN) and ground.

Did the test lamp light?

--

Go to Step 3

Go to Step 4

3

  1. Remove the radio.
  2. Refer to Radio Replacement

  3. Send the radio in for repair.

Is the repair complete?

--

Go to Radio/Audio System Check

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4

Repair the open in CKT 1140 (ORN) between the IP fuse block and the radio.

Refer to Wiring Repairs

Is the repair complete?

--

Go to Radio/Audio System Check

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