Hey all, Im new to the forum as well as the world of Chevy. In April, I bought a 2007 Tahoe LS. It has a few problems but the one thats bugging me the most at the moment is the front passenger window. When I bought it, it worked perfectly. A few weeks after, it starting working on an occasional basis. I've replaced the motor and regulator on an educated guess. Found out that wasn't it. The only constant factor I have found is that it works as it should only after I've had the A/C blasting for about 10-15 min. My theory now is maybe a thermal protection circuit issue in the BCM. Anybody had this problem before or have any ideas?

 

Check for loose/corroded connectors, pinched wires going to the passenger door switch.
The power for the motor comes from the door switch not the BCM.
Does it act up when using the driver's door switch or just the passenger door switch?

 

It acts up on both switches. I'll look at the wiring when I get home a little later on.