Hello all, I am having some weird issues on my 2000 Silverado 1500. It is a Manual 4.8 single cab. When I bought the truck it had a base model cab manual windows seats all that. After watching some videos I saw a few people do dash swaps so I did just that. I found a 2001 ext cab that was fully electric and took the full dash,wiring harness, and BCM after swapping everything to my single cab it seemed like it was a success as I now had electric windows seats and all. But there is an issue now that when I go to turn the truck off it’s only turns off electrically as in dash,windows and lights but the truck is on mechanically as in the motor is still on and I can only get the engine to shut off if I turn my light switch all the way to the top setting. I checked my bcm for a short it was fine I checked all my fuses. I’m going to check my ground but I’m not entirely sure what it could be, thank you for reading and hope we can find an answer