A/C ONLY BLOWS THROUGH DEFROST

2007 GMC Sierra

Tiny

my2007sierra

June, 22, 2012 AT 8:30 PM

My A/C only blows through defrost vents. Upon initial startup itll blow from regular vents but after about a minute or two itll only blow through defrost, no matter what setting it is on. At first it would only blow cold from drivers side and warm on passenger side, but after a while it only blows cold through defrost vents.

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1 Answer

Tiny

rasmataz

June, 22, 2012 AT 8:47 PM

Have the mode actuator and the HVAC control module checked/tested

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