Mechanics

SMELL AND WINDOWS FOG WHEN START UP?

2007 GMC Yukon • 40,000 miles

There is a smell and the Windows fog when we start the car.
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Rojas.usmc
September 27, 2011.



This is normally a build up of mould and mildew in the A/C heater vents, check that the drain tube is clear, and also check for moisture under the dash from a leaking wind screen seal, if it smell sweet it can be a leaking heater core, check these out first.

Mhpautos
Sep 27, 2011.
How much does this going to cost me?

Tiny
Rojas.usmc
Sep 27, 2011.
To check the drain, is only probing the drain tube with a wire probe, the smell can be removed with commercially available vent cleaners that work very well, it should not cost very much at all if this is the problem, it will be the time taken that's all, I would expect no more than 1 hr.

Mhpautos
Sep 27, 2011.