I would like to be the first to welcome everyone to AT4forum.com, the first and only forum dedicated to the GMC Sierra AT4 Owners. Please take a minute and make a quick introduction!
Welcome to AT4forum.com - Introduce yourself!
- Thread starter Admin
- Start date
TheYzerplan
New member
I've had my 6.2 AT4 1500 Sierra for over a month now, love it. I see a ton of new AT4's on the road, so hopefully this community can grow and share all sorts of stuff.
So thanks to those that set this up, looking forward to sharing all sorts of stuff!
So thanks to those that set this up, looking forward to sharing all sorts of stuff!
Hello gang. I am pretty excited to be the new owner of a 2021 AT4 Duramax Diesel!!! I look forward to diving in, make some mods, and just learn more about the truck. I'm in San Diego and hope to set it up to make the most out of it, so I'll be picking everybody's brain! Thanks for having me.
Hello all,
Proud owner of a 2020 3.0 At4 standard bed. Looking for some inspiration on things to add. I have seen some great things from this group already.
I’m in Cali.
Did I reply to this yet? Truck looks great! What part of California are you in? I’m in San Diego and struggled with deciding on short box or standard. Wound up going with short.
I live in Northern California. San Jose area. I was on the fence as well. I chose standard, because I over pack for everything.
Blloyd
New member
Brand new 2020 AT4 HD with a duramax owner, just brought it home today. Hello from the frozen north of Prince George BC, Canada. 1000km drive home and already in love with this truck
Blloyd
New member
Just waiting for a break in the weather. Only have one from the hotel parking lot and it was a pretty bad one, not worthy of posting lol
FL904AT4
New member
Proud North Florida owner of a 2020 AT4 1500 short box with the Duramax 3.0. Looking forward to seeing some sweet mods and trucks!
Happy to find this forum. Will be a proud South Dakota owner of a 2021 AT4 6.2L in two days. Super excited - wife not so much 
Found one at the dealership that had all the goodies I was looking for (performance package, sunroof, etc..). Previous pickup was a 2013 F150 w/ the Ecoboost. After test driving the AT4 I was happy to have no turbo lag and loved the sound of the big V8 (the factory performance exhaust is impressive)! Will post better pics once I pick it up, but for now this is from test drive day.
Found one at the dealership that had all the goodies I was looking for (performance package, sunroof, etc..). Previous pickup was a 2013 F150 w/ the Ecoboost. After test driving the AT4 I was happy to have no turbo lag and loved the sound of the big V8 (the factory performance exhaust is impressive)! Will post better pics once I pick it up, but for now this is from test drive day.
What up fella’s been on site for month . Just joined , trying to navigate never really do social media or make comments on anything. Anyway shouting out from New Orleans, just got 2020 3.0 a month ago. Love it searched for a month . Don’t have all options but still love it . Only thing is ,its at the body shop .We just had a hurricane 3 Weeks Ago and my neighbors shingles did a wash job on my truck. Smh $4000 damage can’t wait to get it back .First diesel
AT4 Forum Featured Photos
AT4 Forum Featured Photos
Most reactions
-
91 -
27 -
24 -
24 -
24 -
24 -
21 -
20 -
19 -
19 -
18 -
18 -
18 -
M
18
-
17