Differences on new 22 refresh AT4 vs 2020 AT4

6sigma · June 30, 2022

That's cool! They must have changed the software somewhere along the way. My 22 refresh was built in May and does not have sport mode. I admit, other than checking to see if it was there, I didn't use sport mode on my 2020, but hey I'd rather have it than not have it!

z28tranz · June 30, 2022

50 minutes ago, Firehawk99 said:

Nice! My ZR2 definitely doesn't have it. What engine do you have?

I have the 3.0 Duramax.

z28tranz · June 30, 2022

I admit that I just checked after seeing the original post about the differences.

Edited June 30, 2022 by z28tranz

6sigma · June 30, 2022

20 hours ago, Dirk13 said:

How many miles were on the 20 when you traded it?

I just traded in my 2021 Silverado 3.0 with 33000 miles for a 2022 refresh. The engine in the new one is WAY quieter.

Mine had about 16k miles. The new one does seem quieter, not sure if that is due to more sound insulation in the cab or something different with the engine.

GM90 · July 1, 2022

Maybe sport mode depends on engine option?

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

claw2791 · July 2, 2022

Duplicate

Edited July 2, 2022 by claw2791

claw2791 · July 2, 2022

12 hours ago, GM90 said:

Maybe sport mode depends on engine option?

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

I can't find it now. But starting with the 21(?)s Sport Mode was removed from any Off Road trim because of the tires. It was in the fine print when researching a AT4X on the GMC site.

6sigma · July 2, 2022

12 hours ago, claw2791 said:

I can't find it now. But starting with the 21(?)s Sport Mode was removed from any Off Road trim because of the tires. It was in the fine print when researching a AT4X on the GMC site.

Makes sense. A diesel AT4 is probably the last vehicle that needs a sport mode... ha!

TxTruckMan · July 3, 2022

My 2021 AT4 has the rear door locks on the handles.

mjonesjr84 · July 3, 2022

23 minutes ago, TxTruckMan said:

My 2021 AT4 has the rear door locks on the handles.

GM took them off the GMC trucks for the 2022 models.

6sigma · July 4, 2022

I took the 22 on a 300+ mile trip this weekend and noticed these differences.

1. The trans programming is definitely different on the 22 versus the 20. The 22 will hold gears longer before downshifting. It seems much better tuned to the low-rpm torque of the diesel engine versus the 20, which I always felt like was tuned for a gas engine where it would rev higher. When using adaptive cruise and traffic clears in front, the 22 will downshift maybe 1 gear and moderately accelerate where the 20 would drop the hammer and go to the lowest gear possible and rev it out. The 22 is much better suited to the diesel engine.

2. The cup holders are shallower and grip tighter. Not sure I like them as well, but not a big deal.

3. The Duratrac tires are much noisier than I like. 40-55mph they are really noisy. Not sure how long I'll keep them but will be looking for a good AT (not MT) tire to replace them. I like the 18" wheel though - seems to ride OK and already saved me from possible curb rash.

4. The electronic console shift lever is nice but also feels like a bit of a gimmick. It takes up a lot of center console space. There is a slight delay when selecting D or R for the gear to engage that isn't there with the column shifter. It looks better and I prefer the new shifter vs the old one but you also lose some space and give up the simplicity of the column shifter. It's what all the cool kids are doing though so GM has to keep up!

5. The new electronics are GREAT. Having Google integrated into the truck makes it super simple, don't even have to connect Android Auto. The built in Google map worked flawlessly.

jlong1984 · July 4, 2022

On 7/3/2022 at 10:52 AM, mjonesjr84 said:

GM took them off the GMC trucks for the 2022 models.

To clarify, they removed them on the refresh '22. The '22 Sierra Limited has them.

clintyarborough · July 18, 2022

I have a 22 1500 AT4 duramax (just got it 3 days ago). It doesn't have sport mode, or the button to roll down all 4 windows (hill descent assist is the big button).

Edited July 18, 2022 by clintyarborough
1500 to be clear

JCattSS · July 18, 2022

My refreshed RST has sport mode, 6.2L. No Z71.

Had a 21 RST with the same engine but NHT.

mjonesjr84 · July 19, 2022

4 hours ago, clintyarborough said:

I have a 22 1500 AT4 duramax (just got it 3 days ago). It doesn't have sport mode, or the button to roll down all 4 windows (hill descent assist is the big button).

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.