Tigerbend225

My 21 custom made the same noise. Ended up being a loose bed bolt that was backed out.

Just an update. Picked my truck up today. They replaced the TCM and did a reprogram. Drove home and the truck did fine so I'm happy and hopeful no more issues. The code they were getting is U0100 when they diagnosed it.

No sir. Truck is stock with no after market mods.

No I do not have a list of codes at the moment. When I get them I'll post on here. They told me the computer will not talk to the torque convertor module after an attempt to reprogram, so they are waiting for a new module to come in. This will be this dealers second attempt to fix the problem. guess ill get it towed to another if they can not figure out the problem. At what point should I contact GM about it since this is attempt #2 and almost 30 days in the shop.

Hello all, thought I would share some problems I have recently started having with my truck and curious if anyone else has seen or heard of these problems. I have a 2021 1500 custom with the 2.7 and absolutely love this motor and truck but earlier this month I started the truck like normal and pulled about 10ft and felt loss of power and a strong vibration. I got all kinds of codes and lights pop up including CEL, service brake, traction control turned off, serve TCM. I noticed the indication for the shifter was gone and the truck would barely drive. It would slam in reverse when I would try to cycle the shifter. When I turned it off and restarted it acted the same. I noticed I could not get my key to go all the way back when off so it would not come out. It would drive but never shift like it was in limp mode. I pulled up to a safe spot and turned the truck off again. Looked over battery and fuses then tried cranking again and nothing would happen. 2hours later when tow got there, truck cranks right up like normal. Got it towed to dealer and they said it was wiring harness problems and ordered parts. Fast forward 2 weeks they call and say everything is good to go. Pick the truck up and not even 1/4 mile down the road I stop at a red light and bam, all the same lights and codes pop up. Same problems I had before but this time I could hear a slight grinding noise under the truck. Get it towed once again to dealer and truck still would not crank for them. Next day they tell me they have a torque convertor on order. Got the truck in May and only have 11k miles on it and have never had an issue with it until now. Sorry for the long post.