For the past week I have been experiencing some issues with engine not shifting correctly when going above 60 mph. When I push the accelerator the engine barely goes up and speed and it seems to jerk back. I even floored it and very little response. The truck only has 4300 miles on this 2021 Laramie. Is it the engine going already or transmission. I plan to take to the dealership but wondering if anyone has experienced this.
LOL...
C'mon: engine/transmission issues and you have an aftermarket throttle device that you didn't mention???
Look, I'm all for aftermarket throttle devices. Really. But if you're posting about an issue (like you had), that's a pretty big piece of the puzzle.
Also, you later mention that Tazer DT only goes up to 35" tires and you hint that you may have 36" on yours. (I'm not sure.)
Your initial (and partially subsequent) posts did not mention any of this. The assumption would be that you're running a stock drivetrain. You're not. (Again, modifying the drivetrain is a part of the attraction to this vehicle.)
My point? I'm not making light of your problem. Not at all. I'm just trying to highlight how much essential information was missing.
Glad you got it sorted and it wasn't the truck.