Robert morales

Im sure he used a bidirectional scanner he had the truck for a week and I have taken it to other shops and they can't figure it out I have changed a lot of parts with no difference I'm sure it's either wiring or electrical other than that truck runs great and I can pull my small RV with it out of town

Yes my thought too how often do the tcm go bad the mechanic thinks tcm might have a short causing it

I purchased online and it's programmed to my vin I installed it myself say problem with the old ecm

11 Silverado 2500 6.0 won't rev over 4k in any gear and won't do crank relearn because it shows it's in gear when it's actually in park replaced crankshaft position sensor and new park/ neutral range switch

11 Silverado 2500 6.0 won't rev over 4k rpm in any gear only code is crank shaft relearn which it won't do the relearn because it thinks it's in gear when it's in park and also it thinks the brake is being applied when it's depressed it has new ecm programmed new brake switch new park/ neutral switch shops around me can't figure it out