Test Description

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The number(s) below refer to the step number(s) on the diagnostic table.

2. This step tests for auxiliary blower motor operation in the OFF setting.
3. The rear auxiliary HVAC control assembly should not operate with the front auxiliary blower motor switch in the OFF position.

Fig 1: Diagnosis Procedure Blower Motor Always On - Auxiliary (Step 1 To 8)
Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnosis Procedure Blower Motor Always On - Auxiliary (Step 9 To 19)
Courtesy of GENERAL MOTORS CORP.