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Door Lock Function Inoperative With Transmitter

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Door Lock Function Inoperative with Transmitter

Step Action Yes No
DEFINITION: Use this diagnostic chart when the door lock function is inoperative when using the keyless entry transmitter. All other keyless entry functions operate normally.
1 Did you perform the Remote Keyless Entry System Check? Go to Step 2  Go to Diagnostic System Check - Remote Keyless Entry 
2 Press the door lock button on the transmitter.
Do the door locks operate normally?		 Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS Go to Step 3 
3 Operate the door locks from the controls inside the vehicle.
Do the door locks operate normally?		 Go to Step 4  Go to DIAGNOSTIC SYSTEM CHECK - DOOR SYSTEMS
4
IMPORTANT: Inspect that the keyless entry transmitter is the correct model for the vehicle remote system. A wrong model transmitter may pass this test, but will not activate the vehicle remote system.
  1. Turn on the J 43241  Keyless Entry Tester.
  2. Place the transmitter on the J 43241  test pad.
  3. Press door lock button of the transmitter.
Does a tone sound and the green light illuminate on the J 43241  after the button is pressed?		 Go to Step 5  Go to Step 7 
5 Test the body control module (BCM) portion of the lock relay control circuit for an open or high resistance. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 Go to Step 9  Go to Step 6 
6 Inspect for poor connections at the harness connector of the BCM. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS .
Did you find and correct the condition?		 Go to Step 9  Go to Step 8 
7 Replace the transmitter. Refer to Transmitter Programming .
Did you complete the replacement?		 Go to Step 9  -
8
IMPORTANT: Perform the BCM programming procedure when replacing the BCM.
Replace the BCM. Refer to BODY CONTROL MODULE REPLACEMENT .Did you complete the replacement?		 Go to Step 9  -
9 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 3 
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