buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Component Tests and General Diagnostics > < System Check
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Blower Motor: Initial Inspection and Diagnostic Overview
Troubleshooting Hints

NOTE: Try the following checks before doing the System Check.

1. Check the HTR-A/C Fuse by operating the Luggage Compartment Release.
2. If the Blower Motor does not turn off, replace the Heater Control Assembly.
3. Check the Temperature Valve for binding, if there is a problem with temperature selection.
4. If the Blower Motor and Temperature Valve Actuator operate, but there is insufficient heating, refer to Insufficient Heating and Defrosting.  

See: Testing and Inspection/Symptom Related Diagnostic Procedures/Diagnosis By Symptom/Insufficient Heating or Defrosting

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Go to System Check for a guide to normal operation.

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Go to System Diagnosis for diagnostic tests.

Component Tests and General Diagnostics > < System Check