Jump to content

Differences on new 22 refresh AT4 vs 2020 AT4

6sigma
 Share

Recommended Posts

clintyarborough Enthusiast

clintyarborough

Posted
Posted
11 hours ago, mjonesjr84 said:

It was a late year change in 2021 that the AT4 didn't get sport mode. GM decided the off road tires didn't need it. I had an AT4 that was built in June 2021 that had sport mode.

But z28Tranz has a refreshed 22 AT4 with sport mode (posted pictures).  It's confusing for sure...  Mine also lists that ventilated seat cushions aren't included / later retrofit, but my cooled seats are working...

  • Replies 44
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

6sigma
6sigma

I've had my new 22 refresh AT4 diesel for a couple hundred miles and thought I'd post the few things I've noticed different about it versus my previous 2020 AT4 diesel. These are things I've noticed d

z28tranz
z28tranz
6sigma
6sigma

To make it more confusing, the 20 inch option on AT4 now comes with Territory MT tires as standard. You can option a 20 inch AT tire, but the standard 20 inch has a MT now too.    Honestly I

Posted Images

z28tranz Enthusiast

z28tranz

Posted
Posted
1 hour ago, clintyarborough said:

But z28Tranz has a refreshed 22 AT4 with sport mode (posted pictures).  It's confusing for sure...  Mine also lists that ventilated seat cushions aren't included / later retrofit, but my cooled seats are working...

I wish my damn ventilated seats were working! Those come in handy in this FL heat. 

6sigma Enthusiast

6sigma

Posted
  • Author
Posted
7 hours ago, clintyarborough said:

But z28Tranz has a refreshed 22 AT4 with sport mode (posted pictures).  It's confusing for sure...  Mine also lists that ventilated seat cushions aren't included / later retrofit, but my cooled seats are working...

 

That's strange! My sticker says no ventilated seats - the buttons light up like they are working but they are not (at least I'm pretty sure they are not).

claw2791 Enthusiast

claw2791

Posted
Posted (edited)
On 7/19/2022 at 6:30 AM, clintyarborough said:

But z28Tranz has a refreshed 22 AT4 with sport mode (posted pictures).  It's confusing for sure...  Mine also lists that ventilated seat cushions aren't included / later retrofit, but my cooled seats are working...

20220605_103735[1].jpg

 

His has the 20 inch wheels, which dont include the Duratracs that the 18s do. They have All Terrains where the Duratracs are Mud Terrains. The tires seem to be the deciding factor. I'm sure it  has to do with wearing down the more aggressive tread of the Duratracs too easily with "Sport" driving.

 

Not that it stops anyone. 🤷‍♂️

Edited by claw2791
6sigma Enthusiast

6sigma

Posted
  • Author
Posted
3 hours ago, claw2791 said:

20220605_103735[1].jpg

 

His has the 20 inch wheels, which dont include the Duratracs that the 18s do. They have All Terrains where the Duratracs are Mud Terrains. The tires seem to be the deciding factor. I'm sure it  has to do with wearing down the more aggressive tread of the Duratracs too easily with "Sport" driving.

 

Not that it stops anyone. 🤷‍♂️

 

To make it more confusing, the 20 inch option on AT4 now comes with Territory MT tires as standard. You can option a 20 inch AT tire, but the standard 20 inch has a MT now too. 

 

Honestly I don't care about the sport mode. I used it once on my 20 AT4 just to see what it did. As far as I could tell it altered shift points and that was about it. Maybe on a 6.2 RST it might make more sense, but the diesel AT4 seemed kinda pointless.  

  • Like 1
mjonesjr84 Enthusiast

mjonesjr84

Posted
Posted
2 minutes ago, 6sigma said:

 

To make it more confusing, the 20 inch option on AT4 now comes with Territory MT tires as standard. You can option a 20 inch AT tire, but the standard 20 inch has a MT now too. 

 

Honestly I don't care about the sport mode. I used it once on my 20 AT4 just to see what it did. As far as I could tell it altered shift points and that was about it. Maybe on a 6.2 RST it might make more sense, but the diesel AT4 seemed kinda pointless.  

My 2021 AT4 had the 20" wheels with the Territory MT tires and had sport mode. 

clintyarborough Enthusiast

clintyarborough

Posted
Posted
57 minutes ago, 6sigma said:

 

To make it more confusing, the 20 inch option on AT4 now comes with Territory MT tires as standard. You can option a 20 inch AT tire, but the standard 20 inch has a MT now too. 

 

Honestly I don't care about the sport mode. I used it once on my 20 AT4 just to see what it did. As far as I could tell it altered shift points and that was about it. Maybe on a 6.2 RST it might make more sense, but the diesel AT4 seemed kinda pointless.  

 

I was going to say, I have the 20s on mine with the Territory MT tires.  All these minor differences are confusing, no wonder salesmen can't give you straight answers on some things...

6sigma Enthusiast

6sigma

Posted
  • Author
Posted

Turns out my ventilated seats do work, even though the window sticker says they are not installed. Now I only need the park assist chip!

  • 1 month later...
ajs800 Enthusiast

ajs800

Posted
Posted

Do you notice any changes with the seats with quality of leather and overall feel? I sat in a refresh AT4 this week and couldn't believe how much softer and better the driver's seat feels compared to my '20 AT4.  However, I've read here a few times that there was no change with the refresh.  When looking closely the seams of the base seat cover are different which tells me minor changes were made. 

GMC-AT Senior Enthusiast

GMC-AT

Posted
Posted

Coming from a 2019 RST to 2022 Refresh RST -  the seats seem about the same to me. I have a 6.2 and it does have Sport mode. The BOSE in the 2019 was better IMO. Everything else is better in the 2022

20L8TSierra24 Senior Enthusiast

20L8TSierra24

Posted
Posted
On 7/1/2022 at 10:07 AM, GM90 said:

Maybe sport mode depends on engine option?

 

I have a 2022 at4 refresh with 6.2 and no sport mode.

6.2 is the sport edition 🤪

f8l vnm Senior Enthusiast

f8l vnm

Posted
Posted

Duratracs are still considered AT tires , they just happen to be as loud as MT tires. Great tire with really good grip but god damn they are loud ( for me anyway ) 

  • 4 weeks later...
6sigma Enthusiast

6sigma

Posted
  • Author
Posted

Another difference I've noticed now after some miles on my 22 refresh AT4 3.0 is the DPF regen cycle. My previous 2020 AT4 diesel had very noticeable regens - I could tell when it was in regen cycle by high idle and a change in exhaust tone when driving. I have yet to tell when the 22 has done a regen. I'm near 2000 miles and I'm sure it has done a couple but I have not heard any change in exhaust or noticed any high idle. I expected to smell the first regen as it burns off any manufacturing oils and coatings, but have noticed nothing. Maybe it hasn't done one yet but that seems unlikely - my 2020 would do one every 500 miles or so. It seems like something has changed in regen cycle programming.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • KARNUT
      Gas Prices

      By KARNUT · Posted

      3.19 @ Kroger’s in Montgomery Tx
    • Flynlow
      2027 Chevrolet Silverado: Official Discussion

      By Flynlow · Posted

      We have now!  2027 GMC Sierra  Early look, but I'm a GMC guy and so far I think I like the looks of the Chevy better.
    • newdude
      Lower trims ( WT, Custom, Silverado ( aka LT )

      By newdude · Posted

      HD at the moment, are kinda their own deal.  How LTZ sells on those vs on 1500, there is a difference.   They are merging most of the mid trims on 1500.  LT, RST and LTZ are replaced by one trim, Silverado.  LT and RST are a BIG portion of sales.    Bad naming choice aside, the new Silverado trim will offer the spread of options that those three trims offered.  So expect to see things like the tech package for example, and memory seats.  And LT Trail Boss will now just be "Trail Boss" (formerly LT Trail Boss) but will offer content spread like the new Silverado trim will.  The press photos showed the Trail Boss (formerly LT Trail Boss) has access to Super Cruise now, which on the current truck was High Country only.       Here is the Trail Boss interior.  Memory seats and Super Cruise are present.  All things the LT Trail Boss it replaces, and the RST it was based on didn't get on the current gen.  You had to go to LTZ or ZR2 for memory seats, and High Country for Super Cruise.      
    • dennismc
      2021 vs 2026 handling (1500 X31 Sierra)

      By dennismc · Posted

      I installed a Hellwig rear sway bar on my 21 Sierra SLT, it made a huge difference on how the truck handles, no body roll, the trucks much more planted now. Not sure of the suspension differences between the 21 and 26,  if its body roll your having a sway bar will solve it. 
    • Old Bay
      frustrating P0446 code

      By Old Bay · Posted

      So a follow up and my fix. I found in online searches the live data to look at on a scan tool to verify the fuel tank pressure sensor was working.  It showed an spec number towards the lower end of the rang, but in spec.  Then while it was running opened the gas cap and the pressure should change.  It didn't change even a tiny bit.  The data for the purge valve said it was open...never changed. So then I measured the voltages on the plug for the fuel pressure sensor and they matched what it should be.  So local car quest parts had the sensor in stock...it was a bit of a pain to remove and an even bigger one to get it to actually go back in.  It helped to unbolt the driveshaft and bungie cord away from the gas tank to give a bit more room to work. So fuel tank pressure sensor in I cleared the code, and started it up.  I went to the scan tool's live data and... Eureka! The pressure number was different and fluctuated a bit.  So took it on a short drive and pressure number varied saw the purge valve go from closed to open and back to closed.  Drove it to and from work for roughly a week plugged in the scan tool no codes.  I took it in to get tested and passed.  In my state's infinite wisdom (oops meant greed), since I pushed the test with the maximum extensions I have to take it back in by Feb '27 to 'get it back up to date', then my next test won't be until Feb '29. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...