GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire Radio/Audio System System Check performed?

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Go to step 2

Go to Radio/Audio System Check

2

  1. Turn the parklamps on.
  2. Connect a test light.
  3. Backprobe between the radio harness connector C1 terminal 6 to ground.

Does the test light illuminate?

--

Go to Step 3

Go to step 4

3

Repair the open in circuit 9.

Is the repair complete?

--

Go to Step 5

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4

Service the radio. Refer to Radio Replacement

Is the repair complete?

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Go to step 5

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5

  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors/components removed.

Have all the repairs been made?

--

Go to Radio/Audio System Check

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