Welcome to AT4forum.com - Introduce yourself!

[Blloyd]

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

Tried to post and I just get file too big pop up?

 

AT4 Forum Fav 👍

KBH Center Console Lid Armrest Cover for GMC Sierra - Grab one through Amazon!

[Bucsnorth]

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!

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!

Since I just found this site I suppose I better start posting instead of just watching. I have a 3500HD AT4 ordered which I’m hoping to get here shortly. My previous Duramax was a 2003 so this will be quite different to me. I can only imagine how this will pull a trailer with the 10 speed transmission and power. I bought the cart before the horse so to speak as I have Amp research power boards, rollnlock cover, and 60 gallon fuel tank to T into main tank all just waiting to install. I’ll post some pics when I finally get it and it’s dolled up.

 

[SDGRAINMAN]

This is going to be a great forum. I just got word my 2021 AT4 should be here in about 3-4 weeks. As a F-150 Platinum owner I hope I made the right decision. Satin Steel Metallic.

 

[TheYzerplan]

This is going to be a great forum. I just got word my 2021 AT4 should be here in about 3-4 weeks. As a F-150 Platinum owner I hope I made the right decision. Satin Steel Metallic.

Welcome, friend!

Had my 2020 since last summer, I've towed our camper, had some fun in the sand, and used it as the daily and kid transport... had zero issues so far.
One piece of advice, change the shocks, the Ranchos are trash. Also, if you plan to put TMPS sensors in your trailer tires to sync to your truck, do it 'before' you create your trailer profile.

 

[rotor85]

Hey folks...name's Julio...my username comes from many years (20+) of using it on other forums relating to rx7's. I own two, one being a full blown drag car which is the reason I am picking up a 2021 Summit White AT4 2500HD Duramax this tuesday. gonna need more towing than what my Tundra could handle. This will be my first diesel powered truck since I will be replacing my 20ft enclosed car hauler with a 28 footer real soon. Planning on putting some serious miles on this truck, as I did to my 2016 tundra at 130K. Love the styling of the AT4 thats why I searched for 5 months and finally found one available!! So now I am looking to start doing some mods to it cuz I cant leave anything stock. Any suggestions for exhausts and tuner modules are welcome!

 

[GarageRat]

Hey folks...name's Julio...my username comes from many years (20+) of using it on other forums relating to rx7's. I own two, one being a full blown drag car which is the reason I am picking up a 2021 Summit White AT4 2500HD Duramax this tuesday. gonna need more towing than what my Tundra could handle. This will be my first diesel powered truck since I will be replacing my 20ft enclosed car hauler with a 28 footer real soon. Planning on putting some serious miles on this truck, as I did to my 2016 tundra at 130K. Love the styling of the AT4 thats why I searched for 5 months and finally found one available!! So now I am looking to start doing some mods to it cuz I cant leave anything stock. Any suggestions for exhausts and tuner modules are welcome!

Check out Bank

 

[GarageRat]

Check out Banks Power Derringer and Pedal Monster..

 

[Regular Cab Duallies]

Hello! I love regular cab duallies, hence the name! I live in Albuquerque, New Mexico. Where does everyone else live?

 

[GarageRat]

Hello! I love regular cab duallies, hence the name! I live in Albuquerque, New Mexico. Where does everyone else live?

Hailing from Superior Wi here..

 

[Popcycl]

I've had my 2020 AT4 Sierra Duramax for over a month and really like it.

 

[GarageRat]

I've had my 2020 AT4 Sierra Duramax for over a month and really like it.

Welcome Aboard!!

 

[JksnVly]

My Duramax arrived Friday and I’ll pick it up Monday. First ever GMC, was a longtime F-150 owner.

 

[Regular Cab Duallies]

My Duramax arrived Friday and I’ll pick it up Monday. First ever GMC, was a longtime F-150 owner.

Welcome! 1500, 2500 or 3500?

 

[JksnVly]

Oh a 1500.

 

[Regular Cab Duallies]

Oh a 1500.

Great! Give us some pictures when you get it