Ok…so I have a 2020 GMC Sierra with the 3.0L, owned it since September 2020.
I am doing a cross country military move and have approximately 18,000 miles on the vehicle. Have broke down THREE times now with a fault in the DEF system. This is my 8th night of being stranded from Utah to Colorado.
The first two codes were P2382 and the third code is P2383.
Utah GM dealership replaced replaced the exhaust differential sensor. The Denver GM dealership has shot wires and tightened connections. Denver did a 90 mile test drive and couldn’t get it to duplicate after repair. I drove 18 miles from dealer and got the engine light and went into crawl mode.
Symtoms:
- Check Engine Light
- Service Emmission System
- Engine cooling fans on full blow
- Rough idle +/- 400 RPM
Questions:
1. Has anyone dealt with this?
2. Has anyone had GM jump through their but to help someone stuck on a cross country move?
3. Has anyone dealt with buy-back or lemon law?
I honestly don’t trust this truck.
