Question about 2005 GMC Sierra

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Cooling fan relay location on a 2005 gmc sierra

Truck is over heating and blowing hot then cold air. I can keep it from over heating if i turn my heater fan on high.

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Check the fan clutch operation. And also check for leaks.

Posted on Mar 05, 2010

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If air is hot then cold it sounds like you have a sizable air pocket in the cooling system. This could be caused by a leak or if you have recently done anything to the system without bleeding it afterward.

Posted on Mar 05, 2010

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