LKGRenegade22

If it's an official GM part just go to your local dealer, that's what I did.

I just wanted to give an update to anyone that was searching like me. I had a bone stock 2020 AT4 with the gray 20" wheels and put 285/65/20Nitto Ridge Grapplers and they rubbed like crazy on the back inside of the front fenders in reverse with any speed or anything close to full turn. I modified the fender but had to do quite a bit or cutting. After having the truck a month someone hit me and totaled it and I went and bought the exact same truck in a 2021 model and put 295/60/20 Nitto Ridge Grapplers and they fit perfect. No rubbing and still about 1/2' from the front control arms with no spacers.

Thank you so much!!!! My local dealership has a new one for me to come pickup but I had been trying to figure out what the heck mine fit. Now I know!

So I had a 2020 GMC AT4 with the multipro tailgate for about 6 weeks before someone ran a stop sign and totaled it. I had ordered a bass boat to match the truck so as soon as it was totaled I was on the hunt for a replacement of the EXACT same truck. I ended up finding one states away that showed up 2 weeks after the initial delivery date and I had rescheduled my flight to go get it 4 times. When it did finally come in I flew down to get it on a Saturday and the dealership did not have time to install the kicker system in the tailgate on this truck but I told them no big deal because I knew i install it with no issues. Now this new truck is a 2021 instead of a 2020 but I don't see where anything has changed in the tailgate. Well of course if I'm posting this I have an issue...LOL I was able to install all the brackets, components and wires with no issues but when it came to the final step of hooking up the kicker panel and installing it, it will not fit. I have attached a picture of the instructions and you can see in that picture the panel has a recessed area in the middle to go around the bolts. It also has double holes that you have to drill in the tailgate to install. The panel that came in the GM box does not have the recessed edges for it to fit. It also has one hole between the speakers and the double holes on the ends of the panel do not even line up with the holes in the tailgate. I'm thinking that this is a panel that goes to a different vehicle...but how could that be? Do any other vehicles even have this kicker setup?

How much did it raise the front end and how long did it take to install? Was it difficult?

I've read and read and I am still unsure. I know I want to go with BFG KM3's on my bone stock 2020 AT4. IN 285 width they only come in 55 ratio which I don't want because I don't want to go smaller. I can't decide if I should just stay with the 275/65/20 or try the 295/60/20. Even the stock 275/60/20 Goodyears are only about 5/8' from the control arm.