GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

2

Turn the ignition to the RUN position.

Does the SECURITY indicator illuminate during the bulb test?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the body control module (BCM) connector C3.
  2. Connect a 15A fused jumper between the BCM connector C3 terminal C12 and ground. Refer to Circuit Testing in Wiring Systems.

Does the SECURITY indicator illuminate?

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Go to Step 4

Go to Step 6

4

Test for and repair a poor connection at the BCM connector C3 terminal C12. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and repair a poor connection?

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Go to Step 11

Go to Step 5

5

Important: Perform the set up procedure for the body control module.

Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

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Go to Step 11

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6

  1. Remove the instrument cluster.
  2. Connect a test lamp between the instrument cluster connector terminal B3 and terminal A10.
  3. Connect a 15A fused jumper between BCM connector C3 terminal C12 and ground. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

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Go to Step 7

Go to Step 9

7

Test for and repair a poor connection at the instrument cluster connector terminal A10 and terminal B3. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and repair a poor connection?

--

Go to Step 11

Go to Step 8

8

Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Cluster, Gauges, and Console.

Did you complete the replacement?

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Go to Step 11

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9

Test for an open in circuit 728 between the instrument cluster connector terminal B3 and the BCM connector C3 terminal C12. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and repair an open?

--

Go to Step 11

Go to Step 10

10

Repair the open in circuit 640 between S211 and the instrument cluster connector terminal A10. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 11

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11

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3