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paulrice
User

Dec 16, 2010, 3:45 PM

Post #1 of 4 (1581 views)
heater Sign In

2005 gmc yocon has climate control heater fan sometimes does not come on in the front the rear works fine it comes on at times check wireing seems fine maybe before the blower motor there is a eletronic relay


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 16, 2010, 4:17 PM

Post #2 of 4 (1575 views)
Re: heater Sign In

The next time it doesn't come on, give the blower motor a rap with a screwdriver handle and see if it starts. If it does, replace the motor.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



paulrice
User

Dec 17, 2010, 9:59 AM

Post #3 of 4 (1563 views)
Re: heater Sign In

did that did not work shook wires did not work drove about 4 miles came on


Jeff Norfolk
Enthusiast
Jeff Norfolk profile image

Dec 17, 2010, 10:02 AM

Post #4 of 4 (1562 views)
Re: heater Sign In

Unplug the blower resistor and take a look at it. These vehicles historically will melt the plug that goes into the resistor. Typically from a faulty blower motor. If it is the fix is a new resistor, plug and motor.
Jeff






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