I have a 2005 Chevy Tahoe. The passenger side windows stopped working and both passenger and driver power seats stopped working. All of this happened at the same time. I saw this same problem posted by another user back in January but I didn't see a clear answer. Does anybody know how to fix this problem? I've checked the fuses but didn't see any problems. I'd hate to bring this to a dealer if it's just a simple electric problem. Please help.

CaptainRich

Just as I said then, those aren't on a fuse. They use circuit breakers in case of a short or in case one of the switches happens to get stuck "on.

But if they don't work at all, you probably have either lost battery power to that portion of the fuse block, where the circuit breakers are located.

Do either or the rear window work? And, are we assuming that all window switches are testing good?

But, perhaps even more likely: the ground side might be open. Both the passenger window and the seats share the same ground point, G305.
The driver's window uses a different ground.
The ground you are looking for is located under the driver's seat and under the carpet, and near the Sensing and Diagnostic Module (SDM), for the air bag system (note the yellow harness and connector - be real careful around these ones!). Perhaps something has broken that ground loose.

Let us know.