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 - Lighting Systems

2

  1. Open the driver door.
  2. Open the passenger door.
  3. Open the rear compartment lid.
  4. Turn on the reading lamp switches in the rearview mirror.
  5. Unlock the vehicle using the keyless entry function.
  6. Observe the courtesy lamps.

Do the courtesy lamps illuminate during all of the above actions?

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

Go to Step 3

3

Test for and repair a poor connection at the BCM connector C2 terminal E. 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 6

Go to Step 4

4

Test for and repair a poor connection at the BCM connector C3 terminal D1. 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 6

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 6

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6

Operate the system to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3