GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

The following components operate at all times (even with the ignition switch in the LOCK position and an open vehicle door):

    • The radio
    • The power windows

1

Did you perform the BCM Diagnostic System Check?

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Go to Step 2

G to Diagnostic System Check - Body Control System in Body Control System

2

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

Do the radio and the power windows operate correctly?

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Go to Step 4

Go to Step 3

3

Use a DMM to check continuity between the RAP relay terminal A2 and terminal C1 (relay side).

Is there continuity?

Go to Step 5

Go to Step 6

4

Repair short to B+ in circuit 75.

Has the repair been made?

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Go to Step 7

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5

Replace the RAP relay.

Has the repair been made?

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Go to Step 7

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6

  1. Replace the BCM. Refer to Body Control Module Replacement in Body Control System.
  2. Perform the Setup New BCM procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Has the repair been made?

--

Go to Step 7

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7

  1. Turn the ignition switch to the LOCK position.
  2. Connect all of the connectors.
  3. Install any components that you removed.

Have all the repairs been made?

--

Go to Retained Accessory Power (RAP) System Check

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