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Amedee, GMC Technician
Category: GM
Satisfied Customers: 24138
Experience:  ASE certified tech with advanced level specialist. Wisconsin certified emissions state inspector
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2004 sierra: driver side window door lock mirror switch quit working

Customer Question

driver side window door lock mirror switch quit working can still control passanger side 2004 sierra pickup
Submitted: 5 years ago.
Category: GM
Expert:  Amedee replied 5 years ago.

Are there any codes in ANY of the modules on board your vehicle?

What size engine do you have?
Customer: replied 5 years ago.



enigine 4800 V8

Expert:  Amedee replied 5 years ago.
I would start by checking the LT doors circuit breaker in the instrument panel fuse block to be sure this is not tripped. This circuit breaker provides power to all of these components.
Customer: replied 5 years ago.
works intermittinly quits when truck has sat
Expert:  Amedee replied 5 years ago.

Sorry for the delay!

Is there power to the power mirror switch and door lock switch on the drivers side when this happens?
Customer: replied 5 years ago.

Not on the drivers side but will still operate passangers mirror window and lock from drivers side

Expert:  Amedee replied 5 years ago.
From what your telling me, it really sounds like a bad drivers door module. I would double check this by checking all of the powers and ground as well as the other signals going into this module before you replace it just to be sure.

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