Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. 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. The normal state is the state of the input before activation.
4. The normal state is the state of the input before activation.
8. After replacement of the BCM you must calibrate the new module for proper operation.

Fig 1: DTC B2722 (Steps 1 - 7)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B2722 (Steps 8 - 10)

Courtesy of GENERAL MOTORS CORP.