RocketCrockett
New member
- Jun 19, 2020
- 25
- 6
I recently had my 2020 Denali with 3.0 duramax in for a problem with my cruise control. They replaced several parts,and among them was the engine control module. When I got the truck back, the cruise was working,but engine performance seemed a little weird. When I take off from a dead stop,engine is a little lazy until I hit 1500 rpm, then it lurches from 1500to 2000 in an instant and jerks your head back like my old muscle cars when the 4bbl kicks in. I also notice more turbo noise when it is spooling down at low speeds. The other thing that happened was the def speed warning came on,and I know the def tank was over a half full when I took it to dealer. I put one jug(2.5 gal) in it. When the warning turned off after about 5 miles, I checked the gauge and it was showing completely full. A trouble code came up and after checking it was P2BAA. NOX high. Any ideas from you guys? Fuel mileage seems to be the same. I’m a little hesitant to take it back to dealer for fear they’ll screw something else up. ![Woozy face :woozy_face: 🥴](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f974.png)
![Woozy face :woozy_face: 🥴](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f974.png)