Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 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.

2. Determines if the HVAC door actuator is stalled.
3. Applies control circuit voltages to the input of the HVAC door actuator.

Fig 1: Diagnostic System Check - DTC B0248, B0263, B0408, Or B0418 (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnostic System Check - DTC B0248, B0263, B0408, Or B0418 (2 Of 2)

Courtesy of GENERAL MOTORS CORP.