GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Retained Accessory Power (RAP) Schematics

1

Did you perform A diagnostics System Check - Body Control System?

Go to Step 2

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

2

Check the Courtesy Lamps for proper operation.

Do the Courtesy Lamps operate properly?

Go to Step 3

Go to Diagnostic System Check - Lighting Systems in Lighting Systems

3

Does the BCM flash and chime any DTCs?

Go to Step 4

Go to Step 5

4

Does the BCM flash a DTC 004?

Go to Symptoms - Retained Accessory Power

Go to Diagnostic Trouble Code (DTC) List in Body Control System

5

  1. Close all vehicle doors.
  2. Turn ignition ON, engine OFF.
  3. Operate the power windows.

Do the power windows operate?

Go to Step 6

Go to Symptoms - Doors in Doors

6

  1. Turn ignition OFF.
  2. Operate the power windows.
  3. Check to see that the features operate for the following time period.
  4. • Vehicle with less than 15 miles travelled - 3 minutes
    • Vehicle with more than 15 miles travelled - 10 minutes.

Do the power windows operate for the proper time?

Go to Step 7

Go to Symptoms - Retained Accessory Power

7

  1. Turn ignition ON, engine OFF for 10 seconds.
  2. Turn ignition OFF.
  3. Operate the power windows.
  4. Open a vehicle door.

Do the power windows stop operating?

System OK

Go to Symptoms - Retained Accessory Power