Question about 2003 GMC Yukon XL
The air will blow out of the front vents and then switch to the defrost vents after about a minute or so and then back. When using ac the passenger side vents are blowing out heat. Help!
Check for any vacumm hose leaks that comes from the engine to the ac box, check for vacumm actuator proper operation.
Posted on Jul 21, 2009
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Posted on Jan 02, 2017
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