New for 2023
GMC Sierra/Denali 3500 HD
New Features:
(AVI) Seat Belt Adjustment Guide Loops, standard on Crew Cab and Double Cab models only
(DWC) Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, perimeter lighting, auxiliary lighting, manual folding and extending, (extends 3.31" [84.25mm])

New for 2024
GMC New Sierra/Denali 3500 HD
New Features:
(5SB) Denali Ultimate trim
(L5P) 6.6L Duramax Turbo-Diesel, updated to 470 horsepower and 975 lb.-ft. of torque
(L8T) 6.6L gas engine is also now coupled with the (MKM) 10-speed Allison transmission
Redesigned interiors on (3SA) SLE and (4SA) SLT trims
Redesigned Unique Premium GMC interiors on (4SB) AT4, (5SA) Denali and (5SB) Denali Ultimate
Available 16-way power driver (A2X) and front passenger (A7K) with power lumbar and massage. Standard on (5SB) Denali Ultimate
(CE1) Rainsense Wipers are standard on (4SA) SLT through (5SB) Denali Ultimate trims
(PDI) Sierra HD Pro Safety is standard on all trims
(PQA) 1SA Pro Safety Plus Package is available on (1SA) Pro trim
(PED) Sierra HD Pro Safety Plus Package is available on (3SA) SLE through (5SA) Denali
(UKV) Trailer Side Blind Zone Alert
(UKJ) Front Pedestrian Braking
(T8Z) Buckle to Drive
(IOK) 13.4" diagonal Premium GMC Infotainment System with Google built-in compatibility
(UDV) 12.3" diagonal digital multicolor Driver Information Center
(UQS) 12-speaker Bose Premium Series with CenterPoint, Richbass woofer, and AudioPilot. Standard on (5SB) Denali Ultimate

New for 2025
GMC Sierra 3500 HD Retail and Fleet
New Features:
(Q7J) 20" Bright face wheels with dark painted pockets
(KGU) Universal Vehicle Module
Changes:
(K34) Cruise Control is standard on 1SA
(JL1) Trailer Brake Controller is standard on 1SA
(UD5) Front and Rear Park Assist is added to (PQA) 1SA Pro Safety Plus Package, (PED) Sierra HD Pro Safety Plus Package and (ZLQ) Fleet Convenience Package
(KSG) Adaptive Cruise Control is now standard on AT4 and Denali
(CGN) Spray-on Bedliner will have GMC Logo on back wall for 4SB, 5SA and 5SB
(KI4) 120-volt power outlet is standard on 3SA
(KC9) 120-volt bed -mounted power outlet is standard on 3SA
(ZW9) pickup bed delete is not available on 4SA
(S41) LPO, Rear wheelhouse liners, standard on Denali and Denali Ultimate Dual Rear Wheel models
(QK2) MultiPro Tailgate is now Available on (3SA) SLE
Deletions:
(Q7R) 20" machined aluminum wheel with bright Silver accents
(UD7) Rear Park Assist
Exterior color (G48) Redwood Metallic
(SKW) LPO, 20" (50.8 cm) multi-dimensional Chrome aluminum wheels
(SHL) LPO, 20" (50.8 cm) Chrome aluminum wheels
(PTO) Eliminated from RWD variants
(E85) Eliminated from REGULAR CAB
(ZW9) Box Delete removed from 4SA CREW
3 years of Remote Access standard on (1SA) Pro, (3SA) SLE, (4SA) SLT and (4SB) AT4 trims
3 years of Onstar and Connected Services Plan standard on (5SA) Denali and (5SB) Denali Ultimate trims
(Q21) 18" polished forged aluminum wheels are available on (4SA) SLT trim. Standard on (5SA) Denali and (5SB) Denali Ultimate trims with dual rear wheels
(Q7N) 20" High gloss black aluminum wheels on (4SB) AT4 trim
(Q7F) 20" Ultra-bright machined wheels with bright chrome inserts are standard on (5SA) Denali trim with single rear wheels
(Q7H) 20" Ultra-bright machined aluminum wheels with gloss black inserts are standard on (5SB) Denali Ultimate trim with single rear wheels
(PEC) Denali Reserve Package
(NHT) Max Trailering Package
(G6M) Titanium Rush Metallic
(GXD) Sterling Metallic
(GNT) Volcanic Red Tintcoat
(G48) Redwood Metallic
(GXP) Downpour Metallic
(G6M) Titanium Rush Metallic

 

If it aint broke, don’t fix it.

 

So lots of additional or enhanced creature comforts. Changes to how the "smarts" are implemented and managed.
Here Are All GM Models That Use The Global B Architecture
There are other blurbs on advantages and such.

 

The only upgrade you’re going to get is an increase in payments

 

There is a bump in performance for the L5P
Some consider the refreshed dash (and Global B architecture) to be an upgrade.

 

Wireless Android Auto/Apple Carplay with the larger infotaiment screen.

 

I went from a ‘22 to a ‘24, which is mostly identical to a 2025. High Country to High Country. I only did so because I needed an extra set of tires behind me(DRW). I noticed the power increase right out of the gate. I didn’t know there’d been an increase so it wasn’t psychosomatic. The power thing is cool, but the previous model had more than enough already. The interior I like better aside from the wireless charging. That worked much better on the ‘22.

All that being said unless your ‘22 is rung out or you have money you need to burn, I’d stick with what you’ve got. The ‘22 is still a new model in my book and a great truck. On the non practical side, If you just like new stuff, I don’t think you’d be disappointed.

 

GM is getting hungry and has some pretty good interest rates on new along with dealers offering big discounts. Makes for a buyers market.

 

A “warranty”…. Maybe

 

I don't think he said how many miles on the '22
Might still have powertrain warranty.

 

Thanks for the input. I don't have many miles at all on mine! The dealership just offered me an unsolicited trade and it seemed reasonable. I just didn't want to go to a truck that may have problems inherent to the model year.
I am guessing there are trucks not selling as well at the moment?

 

Most folks aren't in the market to buy a $70-$100K truck and manufacturers want and need to sell trucks. More deals and better deals are coming soon.

 

Make sure it's equipped as you would equip it if you were ordering one from the factory.

 

Interesting.. I bought my 2022 during covid and got 0% interest for 3 years and $1K of accessories (worth about $300) and was pretty happy, but I did pay MSRP at the time and it does seem like the days of "negotiating" are coming back. I just had to get insurance for the truck for an upcoming Baja trip and they'll only insure it for NADA pricing so I've definately seen about a 20% decline in value but I've had 2 years of use so I'm ok with that...

 

Not "coming back"...those days have been here since the late Spring early Summer. You can get amazing deals now as inventory is high and they must sell it.

 

I am going to sit tight, for now!

 

Yeah, deals have been around for a long time. You can get a nice new 2025 Duramax decently equipped for $60-$61K.