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Ron Z.
Ron Z., - GMC Tech -
Category: GM
Satisfied Customers: 18766
Experience:  18+yrs experience. State Inspector & GM Diagnostics/Repair
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my 2004 gmc sierra 1500 blower motor only works on high

Customer Question

my 2004 gmc sierra 1500 blower motor only works on high
Submitted: 7 years ago.
Category: GM
Expert:  Ron Z. replied 7 years ago.

 

This is a very common problem. You will need to replace the Blower Motor Resistor. This resistor is located under the passenger's side dash, mounted to the HVAC housing near the blower motor.