Mechanics

I HAVE SLT THAT JUST REPLACED THE MODE ACUTATOR ON AND AIR STILLS BLOWS OUT THE DEFROST VENTS

2002 GMC Yukon • 42,000 miles

When I pluged in the new motor it rotated clockwise and stopped. It will rotate back no matter what the vent selestor is set to.
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Estivender
November 18, 2011.



Test the vacuum going to the a/c panel. You have a vacuum leak some thing is leaking. Check all the vacuum hoses.

Cadieman
Nov 18, 2011.
There are no vacuum lines on this model for a/c, it uses dc servo motors to operate the blend door and the fresh/recirculating vents.

Tiny
Estivender
Nov 18, 2011.
Is the dc motor maybe hooked up backwards? That would make the motor turn in reverse.

Rivermikerat
Jan 27, 2012.