Nick2019AT4

Trevor, Your 100% right, Exhaust and Cold Air Induction makes a big difference, I gained around 31 hp and about 28 tq by doing that on my truck.

Casey. Most of these people talk a lot of crap, and most don't spend the money to DYNO these products before and after, I have, and Have the DYNO SHEETS to prove it, that's the only way to really know if they are adding power. I also had the BORLA Exhaust put on thru the dealer, got a hold of BORLA and they told me they make the exhaust for GM and it puts out about 15 hp, I didn't DYNO that because I ordered the truck with it. But my real #s were 360 hp 384tq at the wheels, would like 400 hp 400 tq, if they ever come out with a tune. The truck is quick for having a 3.23 rear end, beats Dodge, with there 3.90 rear end and Ford with there 4.10 rear end, Toyota Tundra has a 4.30 rear end and can't come close to this truck, the DYNO and DRAGSTRIP proves a lot.

Casey, The so-called PERFORMANCE COLD AIR INTAKE GM sells is garbage, made about 2 hp 1tq, DYNOED, K&N made 16hp 14tq, big difference, and no, to your question of ck engine light. I've been putting K&N Cold Air Intakes on my trucks for a long time and Dynoing them, they make good power and no issues.

GM IF YOUR LISTENING, UNLOCK THE COMPUTER, PERFORMANCE IS WHAT PEOPLE ARE LOOKING FOR IN CARS AND TRUCKS, GET IT DONE, OR YOUR GOING TO LOOSE IN THE LONG RUN WHEN PEOPLE GO TO FORD OR DODGE.

And the 10speed is smooth, the last 2 summers I been racing it at a 1/8 mile drag strip, with a 9.23 time, beat my friends 2008 Mustang Bullitt, his brothers 2008 Mustang GT, and 2018 Ford Raptor all with out a tune. This truck is a Monster.

Jac365, nope, I ordered this truck in the summer of 2018, as far as the engine, the 5.3 which I had 4 Silverados with that engine, the 6.2 is by far a better chose. More power, better mpg, and it makes this truck a winner, if they would only unlock the computer so you can tune it, that would be perfect.

Ali, good luck with tuning your GMC, I've been waiting forever, bought 2019 GMC AT4 6.2 L 10 Speed last March, put K&N Cold Air Induction, ordered it with GMs Borla Exhaust, had it Dynoed 360HP, 384 TQ, Waiting for tune, they tell me GMC has computers locked up on there trucks. This truck is pretty quick with just this, 1/8 mile 9.23, actually beat a friend of mines 2018 Ford Raptor till he got a tune.