I fixed the Tps but the truck still shuts off in gear
reverse or drive, also I can turn the wheel and it's
shacks ready bad like its gonna shut off any
Answer on what it may be??
Sounds like the power steering pump or one of the other pulley or accessories is causing a load on the engine stalling it. Remove the serpentine belt and spin the pulleys by hand to see if there is resistance or noise.
Search Chevrolet Silverado 1500 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chevrolet Silverado 1500 Experts