Test Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. 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. This step tests for auxiliary blower motor operation in the OFF setting.
3. The Blower Motor Test parameter must be commanded ON before an OFF command will function.

Fig 1: Diagnosis Procedure Blower Motor Always On - Auxiliary (Step 1 To 6)
Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnosis Procedure Blower Motor Always On - Auxiliary (Step 7 To 15)
Courtesy of GENERAL MOTORS CORP.

Fig 3: Diagnosis Procedure Blower Motor Always On - Auxiliary (Step 16 To 19)
Courtesy of GENERAL MOTORS CORP.