look at the power motor connector~ see if perhaps someone put their boots into the car and "kicked" it loose~ would be my first guess...the electrical connection..not the motor...just trace the power and test with a multimeter....but one can surmise that the actual connector has gone loose....just a thought....enjoy my artworks~
Try pulling a fuse
what and stop power? kinda zany tho...on second thought the selector itself may have undergone some heavy weight on it...or uneven load...stepped on that arm or leg and put the selector out of position...a lot of times these are just "snap together" with metal tangs...a dog left in the car may start and drive off ...with the doors locked while you weren't paying attention (lol)~ but now do me a favor and examine carefully that selector switch...perhaps it's unwittingly punished~
Looking for a Used Yukon XL in your area?
CarGurus has 12,514 nationwide Yukon XL listings starting at $1,495.
Search GMC Yukon XL Questions
GMC Yukon XL Experts
Related Models For Sale
Used Cars For Sale