Question about 1999 GMC Yukon Denali
The front and rear air is not working. I replaced the blower motor relay and the blower motor resistor. I hooked a lantern battery directly to the motor terminals and it runs. any idead what my problem could be. my girlfriend wants her ac really bad and wants to take it to a professional. I would like to fix it myself.
Check the dash fan control switch. It can be purchased separate from the whole cluster for under twenty dollars. The instrument panel cover comes off gently by hand with the tilt steering in the down position. You have to then unplug the electrical plugs to get it out of the way. The heater ac control panel then comes out by hand far enough to unscrew the heater fan control from the back. Auto Zone may have this part and have the step by step instruction to get the job done if needed. Good luck and hope this helps, if the fuse and relay is good, then it's going to be the switch. Keep me posted, be glad to help.
Posted on Jun 27, 2009
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Posted on Jan 02, 2017
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