Question about 2005 GMC Sierra

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My GMC Sierra's air conditioning works great but the driver side vents will spontaneousely start blasting out hot air. The passenger side continuse to blow cold air. If iI turn the truck off and restart it the cold air starts working again

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  • Johnny Tumlinson May 24, 2011

    Do you have duel zone climate control?

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  • 251 Answers

  1. Air conditioner system is discharged. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Repair as necessary.
  2. Air conditioner compressor clutch not engaging. Check compressor clutch wiring, electrical connections and compressor clutch, and repair or replace as necessary.

Posted on Jun 07, 2011

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