2009 H3 - Fan (blower) will not work on high #4....all other selections work fine.

I've searched the site and found where it said the "AC blower power module" was bad......

Any advice would be appreciated, hate to take it to the dealer.....

 

If thats your problem. look at this.
2003 2004 2005 2006 2007 2008 2009 GM Hummer H2 A/C Power Blower Control Module | eBay
Looks like its unplug the bad and plug in the new.
I have the manual if you cant find it let me know, I will look up where its located.

 

Not sure that is the problem....its what I read. I guess I was hoping to find someone who has experienced this problem and knows what the solution is....IE....spending 120 bucks not knowing what specifically is causing the problem.

 

people have had just certain levels of blowing go out and it be that resistor pack. it's easy to take a look at and see. plenty of write upon removal, if it is that you should see part of the plug burnt. if so its an easy fix yourself and only about 60 bucks for a new one.