2007 GMC C2500 cool air turning to hot air on driver side

2007 GMC C2500
99,000 MILES • V8 • 2WD • AUTOMATIC
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MAURICE.KEANE
  • MEMBER
  • 1 POST
My A/c on the driver side will turn to hot air sometimes while driving. When I turn off the truck and restart it will be fine. The passenger side is always cool.
Jul 12, 2009 at 6:37 PM
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DR LOOT
  • CAR REPAIR CONTRIBUTOR
  • 2,311 POSTS
you double posted your comment, but now I have another idea, I believe you have a bad actuator underneath the dash that is causing one of the vent doors to stay open, bringing in the outside air.
Jul 30, 2009 at 9:28 PM
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