I have already checked every ground and removed them cleaned things up and re-attached but I am getting these codes for my 04 Silverado 1500 4wd. Its got a lift tires, a Magnacharger on it and it was tuned. Truck runs fine but I get these codes that keep coming back. Had it to the dealer and had the BCM replaced already but they basically said sorry cant fix it.

Here are the codes:

U1016
U1000
U1041
U1026

I know what the codes are but they wont go away any suggestions?