Test Description

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. 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.

2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
4. The symptoms list in Symptoms will determine the correct diagnostic procedure to use.
5. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
7. The presence of DTC B1007 or B1009 indicates an internal module fault.
8. The presence of DTC B1327, B1328, P0560 or P0620 indicates a battery voltage low/high condition.

Fig 1: Theft Deterrent Diagnosis (Steps 1-2)
Courtesy of GENERAL MOTORS CORP.

Fig 2: Theft Deterrent Diagnosis (Steps 3-8)
Courtesy of GENERAL MOTORS CORP.