Truck sputtering around 1200-1500 rpms

[Dgb1500]

I’m at a loss I have 2022 gmc 1500 3.0 totally stock the last few days it’s been running rough and in park while idling it will start running rough and sputtering if given gas and it reaches 1200 rpm. It’ll also start sputtering cruising at around 60 it’s not even noticeable if you’re not looking for it and also it gets super pound in 2nd and 3rd gear but I think that may be and exhaust leak . If I’m being honest I’m not mechanically inclined so any help is appreciated I also almost for got that about 3 days ago it started telling me truck still in drive when I kill it but the shift stick is definitely in park

 

[HacksawMark]

Tell us more. How many miles? How, when, and who has serviced it? How do you use it?

 

[gemarsh]

The Shift to Park is a common problem. gm uses a cheap micro switch that fails. It can be flicked by put your finger in the shifter hole.

The micro switch isn't a serviceable item. Have to by the whole assembly. DIY'ers can solder in a new switch. Some have been known to cut the two wires and splice together, bypassing switch.