Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

3) - This step checks the keyless entry serial data circuit for voltage supplied by the body control module (BCM).

Fig 1: DTC B3102 Diagnosis (Steps 1-6)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B3102 Diagnosis (Steps 7-9)

Courtesy of GENERAL MOTORS CORP.