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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESCOMPUTER/INTEGRATING SYSTEMSDIAGNOSTIC INFORMATION AND PROCEDURESRETAINED ACCESSORY POWER (RAP) ON AFTER TIMEOUT
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Retained Accessory Power (RAP) On After Timeout

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Retained Accessory Power (RAP) On After Timeout
Retained Accessory Power (RAP) On After Timeout

Step Action Yes No
Schematic Reference: Retained Accessory Power (RAP) Schematics 
Connector End View Reference: Master Electrical Component List in Wiring Systems
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 Do only the power windows exhibit this symptom? Go to Step 5  Go to Step 3 
3
  1. Observe the following parameters in BCM data list:
    • Driver Door Ajar Sw.
    • Passenger Door Ajar Sw.
    • Cargo Door Ajar Switch
  2. Open and close each door while observing the respective parameter.
Does the scan tool display change from On to Off?		 Go to Step 4  Go to Symptoms - Lighting Systems in Lighting Systems
4
  1. Install a scan tool. Select diagnostic circuit check and then class 2 power mode.
  2. Close all the doors.
  3. Turn ON the ignition, with the engine OFF.
  4. Wait 5 seconds then turn the ignition OFF.
  5. Wait the time-out for RAP.
Did the scan tool display the RAP power mode, then time-out and display Off-Awake power mode?		 Go to Step 5  Go to Step 11 
5
  1. Turn the ignition switch to the OFF position.
  2. Disconnect the WND RAP relay.
Do the power windows operate?		 Go to Step 6  Go to Step 7 
6 Repair the short to battery in the WND RAP supply voltage circuit. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 13  -
7
  1. Open the driver door.
  2. Connect a test lamp across the relay coil circuits of the WND RAP relay.
Does the test lamp illuminate?		 Go to Step 8  Go to Step 9 
8 Test the RAP supply voltage circuit for a short to B+.
Turn the ignition ON, with the engine OFF, when testing for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 13  Go to Step 11 
9 Inspect for poor connections at the WND RAP relay. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 13  Go to Step 10 
10 Replace the WND RAP relay.
Did you complete the replacement?		 Go to Step 13  -
11 Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 13  Go to Step 12 
12 Replace the BCM. Refer to Control Module References  for replacement, setup, and programming.
Did you complete the procedure?		 Go to Step 13  -
13 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.