Power Windows Intermittent?

Thanks, Ken, unfortunately, the switch panel, number and colors of the wires don't match up with the diagrams you sent - perhaps because mine is a 4WD 2500 HD?

No, it doesn't match up. I was looking around on YouTube before I found you guys and one dude said the diagrams are all messed up for this vehicle, apparently. I appreciate your efforts but I sort of gave up and just ordered a new switch, only $20.00 so not too much of a loss if it doesn't fix it. Again, thanks for your help!

If the switch fixes it, I will be performing an autopsy on the failed unit, and I'll fill you in on what I find. Interestingly, I am retired from 40 years of aviation maintenance, with the last 25 years dedicated to specializing in a particular engine manufacturer's small turbine engines. I considered creating a space like this for the same reason, to help techs troubleshoot systems in which they had little or no experience. Since I dealt with those engines on a daily basis, I encountered a plethora of unusual issues and wanted to do what I could to share. Alas, aviation maintenance is tightly, federally regulated and is a ripe area for liability suits, often with no merit but uneducated juries can be swayed by lawyers. I am thankful you are willing and able to help folks out in the same way with your automotive expertise.

Switch fixed it. It's been malfunctioning for years. I never fixed it because the dealer said it could take literally thousands of dollars in guesswork and swapping out parts to find the problem. When I finally looked into a new switch last week and found they could be had for under $20.00 it was a no brainer to just try it. Unbelievable. Thank you for your help.