Hi CaptainRich,

I have been experiencing the same problem as others with my passenger windows and power seats not working. I have been replacing the MBEC fuse in the panel under the hood. Any suggestions?

https://www.askmehelpdesk.com/cars-trucks/when-asking-about-your-vehicle-303903.html

We will need to know more about what you're driving in order to give you real diagnostic info.
Just repost to this thread.

Sorry forgot to include that. I drive a 2005 GMC Yukon SLT.

On that vehicle, those systems are on separate circuit breakers.
When you replaced the MBEC fuse, did you replace it because it was open?
Do you have access to schematics and test tools (quality DVOM and a non-powered test light, for starters)?

The copper ring inside the 50 amp fuse was broke, I'm assuming that's what you mean by open. No I don't have access to schematics or test tools.