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re: OB Mechanics..AC problems on gmc sierra

Posted on 7/26/15 at 1:32 pm to
Posted by Flanders
Bham
Member since May 2008
9847 posts
Posted on 7/26/15 at 1:32 pm to
How do you know which actuator to replace? I have the full center console but I only replaced the one under the right side glove box.

It had to be matched up it only went on one way. I can't hear it switching. Where should I be listening for a switch and when?

When I turn it off and back on it will blow cold again for about three minutes before going back to hot.
Posted by Hammertime
Will trade dowsing rod for titties
Member since Jan 2012
43030 posts
Posted on 7/26/15 at 1:46 pm to
Whatever side is fricking up, replace that one. This is a good site with pics LINK

Cycle it hot/cold, turn truck off, cold/hot, a/c on/not. Rinse and repeat. I had to do that a bunch of times each time I replaced them

You should be able to hear like a little thump around the glove box when you switch them.
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