Question about 2001 GMC Sierra Crew Cab

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A/C and Heater will not blow air..

I have a 2004 GMC Envoy. My A/C and Heater recently stopped blowing air. I know that the compressor works because it gets cold to the touch. While I drive the fan is forced to spin because of the wind coming into the front vents of the truck and I can feel cool air blow through the vents and the same when the knob is switched to heat. Anyone got any ideas of what the problem may be??

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Blower motor resistor is most common ($20-$70) it controls the blower motor fan and speeds or fan relay fuse (usually under the hood) If it's not either then the blower itself is bad. You can pull the motor and apply 12volts to it to test, if it spins then the resistor.

Posted on Oct 02, 2009

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