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01-03-2009, 09:20 PM
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#1 |
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Senior Member
Join Date: Aug 2004
Location: Everett, WA
Posts: 2,316
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Heater problem.
I have been having problems with my truck lately ('06 GMC regular cab) with heat control.
If I have the heat switch pushed all the way up (hot) then bring it down to about the 2/3 mark (still in the "red" area) it will start blowing cold air after a few minutes. If I move it up a notch, after a minute or two it will start blowing hot air again. Not warm, but hot like it is pushed all the way up. If I bring it back down a notch it starts blowing cold again. Not cooler, but cold. It seems I only have hot or cold and no in between?? This is something new as far as I can tell; I am pretty sure I could regulate the temperature the past two winters. I have checked the coolant overflow and it appears to be full. Even added about a 1/4 a bottle of antifreeze just to be safe but that brought the overflow up over the full mark. Anyone else having problems like this?
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2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
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01-05-2009, 08:05 AM
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#2 |
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Senior Member
 
Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,238
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Re: Heater problem.
sounds like the switches have gone bad
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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