Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

1: Ensure that a learned master ignition key is being used when performing the Vehicle Theft Deterrent Diagnostic System Check.
3: The theft deterrent control module must be programmed to the vehicle.

DTC B2734

Step	Action	Yes	No
Schematic Reference: Theft Deterrent System Schematics Connector End View Reference: Theft Deterrent System Connector End Views
1	Did you perform the Theft Deterrent Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Theft Deterrent
2	Install a scan tool. Turn ignition switch ON. Retrieve DTCs. Is DTC retrieved as a current DTC?	Go to Step 3	Go to Diagnostic Aids
3	IMPORTANT: If a 10 Minute or 30 Minute Re-Learn Procedure is performed, all keys not learned at that time will be erased and will not be recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure. Refer to Adding Keys (Export including Canada) . Replace the theft deterrent control module. Refer to Theft Deterrent Control Module Replacement . With a scan tool, perform the Set Up New VTD Module procedure in the Vehicle Theft Deterrent, Special Functions data list. Perform the programming theft deterrent system components procedure. Refer to Programming Theft Deterrent System Components . Did you complete the replacement?	Go to Step 4	-
4	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	Go to Step 2	System OK