Question about 2000 GMC Jimmy
Is the heater tap being opened by the cable?probably not look under hood and get someone to turn on and off the heater to see,unlikley,heater core blocked
Posted on Oct 28, 2009
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Posted on Jan 02, 2017
If this happens when you are idle, and then you get hot air as you drive, most likely you have low coolant and it only cycles as you drive. Get approved dextrom gmc coolat and cap off your coolant it is most likely low.
Posted on Jan 21, 2010
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