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04-29-2010, 08:15 AM | #1 |
Registered User
Join Date: Jul 2005
Location: Pasadena, TX
Posts: 162
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A/C problem on 07 GMC
I've got an 07 GMC Sierra and every now and then the A/C will just start blowing hot, not warm, hot. But if you turn the temp adjust dial from cold all the way to hot and back to cold, it will start blowing cold again. Sounds like something with the dial. I had problems with the #1 speed on the blower dial on my 07 chevy and it turned out to be a resistor for that speed. Hopefully this is something similar and easy to fix. Thanks for any help yall can give me.
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05-11-2010, 03:48 PM | #2 |
He's got mean nasty FANGS!
Join Date: Dec 1999
Location: Rockwell, NC
Posts: 6,514
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Re: A/C problem on 07 GMC
I'm assuming it's an 07 classic. Its most likely the temp control actuator. If its the drivers side it's on the bottom of the AC case under the insulator panel. Quick fix that sometimes works permanently is to recalibrate the AC controller by removing the HVAC/ECAS for 30 seconds with the ignition off, reinstall the fuse, then start the truck and allow it to run for a minute without touching A/C controls. If it doesn't recalibrate and gets stuck in hot you'll need a new temp door actuator.
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2004 K2500 Burb 1999 C3500 1985 Cutlass Supreme 1969 C-10 1967 C-10 Panel josh@67-72chevytrucks.com |
05-11-2010, 06:27 PM | #3 |
Registered User
Join Date: Jul 2005
Location: Pasadena, TX
Posts: 162
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Re: A/C problem on 07 GMC
Actually, it's the newer body style. And it doesn't have the dual climate control. It's the Sierra SLE.
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