GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check for the Retained Accessory Power (RAP) system?

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Go to Step 2

Go to Diagnostic System Check - Retained Accessory Power

2

Verify the fault is present.

Does the system operate normally?

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

Go to Step 3

3

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the RAP relay.
  3. Inspect the power windows and sunroof for correct operation.

Do the sunroof and the power windows operate?

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Go to Step 4

Go to Step 6

4

Test for a short to battery in the power windows and sunroof feed circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 10

Go to Step 5

5

Replace the LH IP Accessory Wiring Junction Block. Refer to LH IP Accessory Wiring Junction Block replacement in Instrument Panel, Gauges and Console.

Did you complete the replacement?

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Go to Step 10

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6

  1. Open one of the car doors.
  2. Remove the ignition key.
  3. Probe the RAP relay coil feed control circuit with a test lamp connected to a good ground.

Does the test lamp illuminate?

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Go to Step 8

Go to Step 7

7

Replace the RAP relay.

Did you Complete the replacement?

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Go to Step 10

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8

Test the RAP relay coil feed control circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 10

Go to Step 9

9

  1. Replace the Body Control Module. Refer to Body Control Module Replacement in Body Control System.
  2. Perform the set up procedure for the new Body Control Module. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Did you complete the replacement and the set up procedure?

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Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2