Blower Motor Always On - Auxiliary (VIN 3 including Envoy XUV)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Blower Motor Always On - Auxiliary (VIN 3 including Envoy XUV)
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The auxiliary blower motor operates with the auxiliary blower motor switch in the OFF position. |
|||
| 1 | Did you perform the HVAC Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - HVAC Systems - Automatic |
| 2 | Turn the auxiliary HVAC controls OFF. Is the auxiliary blower motor OFF? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Disconnect the auxiliary HVAC control module. Is the auxiliary blower motor OFF? |
Go to Step 4 | Go to Step 5 |
| 4 | Inspect for poor connections at the harness connector of the auxiliary HVAC control module. Refer to Wiring Repairs
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 7 | Go to Step 6 |
| 5 | Repair a short to voltage in the appropriate auxiliary blower motor speed control circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 7 | - |
| 6 | Replace the auxiliary HVAC control module. Refer to HVAC Control Module Replacement - Auxiliary
. Did you complete the replacement? |
Go to Step 7 | - |
| 7 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |