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AF Newbie
Join Date: May 2010
Location: Cedar Rapids, Iowa
Posts: 1
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Heat A/C control problem
I have a problem with my 99 Lumina's heat control. The heat/cool and fan speed switches work but it is stuck on defrost or blend and the A/C won't work right. I have tried swapping the heater control module with one from a junk car and have the same problem. I have also checked the fuses as best I can in the dash and under the hood.
Is there another module under the dash that ultimately controls the vent doors and A/C? The A/C appears to be topped off (it was actually high and had to be bled off a bit) but I can't get anything but the heat defrost to work. Any help will be greatly appreciated. |
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