Door panel recalibration - 2021 Yukon XL Denali

[RailLife365]

My wife complained that there was a "rattle" in the front passenger door when the radio volume is a little higher. So I removed the door panel, and solved that. No big deal. HOWEVER, now the power mirror is not functioning, and the buttons on that door for the power locks and windows are unresponsive. The camera for the 360 camera is working fine, and the window and door locks work fine when controlled from elsewhere.

I removed the panel again a couple of times to triple check that I had the big ol connector correctly attached, and it appears to be fine. No bent pins, no damaged wires, etc.

Is there some module that needs reset or something? Does the BCM relearn that there's a door there by itself? Is there some magical button combo I'm supposed to enter? Help me out here please.

 

[StephenPT]

I've had the door trim off before and removed the electrical connections. Everything went back together just fine and had no issues with the switches. The only suggestion I have is to make sure the red lock on the wiring connector is pulled back fully when you reconnect. You should hear and feel a positive click. At that point the red lock can be pressed back into the lock position.

 

[RailLife365]

I've had the door trim off before and removed the electrical connections. Everything went back together just fine and had no issues with the switches. The only suggestion I have is to make sure the red lock on the wiring connector is pulled back fully when you reconnect. You should hear and feel a positive click. At that point the red lock can be pressed back into the lock position.

Well I guess I'll pull it apart again and look over that connector. I may test the pins as well to be sure a wire isn't broken. I've checked that it's firmly inserted twice, but I figured the computer had to relearn something to function correctly.

Thank you for your help.