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2005 GMC Sierra 1500 Base Reg Cab 119.0 WB Work Truck

2005 GMC Sierra 1500
Trim Info:
Rear Wheel Drive, Reg Cab 6.5' Wideside
16 mpg city / 22 mpg hwy
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February 13, 2014, 2:50 am

Mike G
 

Question: all guages look fine not getting any heat

runs fine temp guage is normal just not getting any heat just cold air


February 16, 2014, 10:44 am

Ron W
Expert Mechanic

Sounds like the blend door is stuck. It controls air temperature for the AC and heater.

It is located under the dash board and usually are difficult to get to. Yours is probably controlled by electronic actuator that is operated by the computer. The actuator is usually the part that fails. It's about a $50 part, but the labor can be fairly expensive depending on which one has failed and how much of the dash has to be disassembled to access it.


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