GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster System Check?

--

Go to Step 2

Go to Instrument Cluster System Check

2

  1. Connect a scan tool.
  2. View the Key-in-Ignition input data.

Does the scan tool indicate the ignition switch closed with the key in and open with the key out of the ignition switch?

--

Go to Step 4

Go to Step 3

3

Inspect CKT 80 (LT GRN) for a short to ground between the ignition switch and the remote function actuator (RFA) module.

Was a short to ground found?

--

Go to Step 6

Go to Step 5

4

Inspect CKT 653 (DK BLU/WHT) for a short to ground between the RFA module and the body control module (MALL).

Was a short to ground found?

--

Go to Step 6

Go to Step 7

5

Replace the ignition switch.

Is the replacement complete?

--

Go to Instrument Cluster System Check

--

6

Repair the affected wiring.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

7

Disconnect the RFA module.

Did the chime stop?

--

Go to Step 8

Go to Step 9

8

Replace the RFA module.

Is the replacement complete?

--

Go to Instrument Cluster System Check

--

9

Replace the MALL.

Is the replacement complete?

--

Go to Instrument Cluster System Check

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