My truck is throwing a TCM is bad code. Very hard start and rpm gauge is not working. Changed TCM and still now its worse off. Help

Good morning have a 2010 Chevrolet Silverado Crew Cab 1500LT 4.8L 2wd. Truck has 6 inch lift, . Ok truck started driving sluggish. Well 2 years ago had truck diagnosed with misfire on cylinder 7 low compression, , truck transmission started slipping , then I would drive normal speed and then came to a stop light and truck barely moved. Well I had it rebuild and cus it wouldn't move when put on drive, after going from park to reverse everything fine, but once you put it on D , nothing, driveshaft no rotation, Well also put in a new used engine 5.3L and after swap drove truck along the blo… Lire en entier