Question about 1999 GMC Jimmy
This summer we had no problem with the A/C, since the cold weather if I put the heat to the max on any position it produces cold air but if I put it on A/C the air is kinda warm. Is there something I can do to fix that problem?
Sounds like the blend door in the HVAC unit is malfunctioning. there is a servo motor that switches a door from the cold side to the heater core side for hot air. sounds like thats what it is. hope this is helpfull
Posted on Jan 17, 2009
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Posted on Jan 02, 2017
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