Question about 1998 GMC Sierra
The A/C is cold and does blow out the vents as a trickle. When you change the desired location, the air does not blow in any direction. Is this a possible vacuum leak? Is there an AC vacuum schematic?
Chk. to see if the motor for the blend doors is working, its located at the left end of the heater box above gas peddel. If that is working than chanses are its the selector controls, there is no vacume its all electronic.
Posted on Jul 22, 2009
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Posted on Jan 02, 2017
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