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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 685 (KEYLESS ENTRY SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESKEYLESS ENTRY SYSTEM INOPERATIVE
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Keyless Entry System Inoperative

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Keyless Entry System Inoperative
WARNING: This page is about a different car, the 2006 GMC Sierra and 2006 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Keyless Entry System Inoperative

Step Action Yes No
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2 Press each button of the transmitter one at a time.
Does the system operate normally?		 Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3 Lock and unlock the door locks using the controls inside the vehicle.
Do the locks operate properly?		 Go to Step 4  Go to Diagnostic System Check - Vehicle
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. See Special Tools .
  2. Place the transmitter on the J 43241  test pad. See Special Tools .
  3. Press each button of the transmitter one at a time.
Does a tone sound and the green light illuminate on the J 43241  after each button is pressed? See Special Tools .		 Go to Step 8  Go to Step 5 
5 Do any of the buttons on the transmitter sound the tone and illuminate the green light when pressed? Go to Step 9  Go to Step 6 
6 Replace the transmitter battery. Refer to Transmitter Battery Replacement .
Did you complete the replacement?		 Go to Step 7  -
7
  1. Turn on the J 43241  . See Special Tools .
  2. Place the transmitter on the J 43241  test pad. See Special Tools .
  3. Press each button of the transmitter one at a time.
Does a tone sound and the green light illuminate on the J 43241  after each button is pressed? See Special Tools .		 Go to Step 8  Go to Step 9 
8 Perform the transmitter synchronization procedure. Refer to Transmitter Synchronization .
Did the locks cycle to lock then unlock?		 Go to Step 12  Go to Step 10 
9 Replace the transmitter.
Did you complete the replacement?		 Go to Step 10  -
10 Perform the transmitter programming procedure. Refer to Transmitter Programming .
Did the locks cycle to lock then unlock?		 Go to Step 12  Go to Step 11 
11 Replace the passenger door module (PDM). Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 12  -
12 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 3 
RENDER: 1.0x

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