Verified vehicle record
2026 GMC Sierra 2500HD
A source-linked guide to the 2026 GMC Sierra 2500HD trim range, powertrain choices, drivetrain, seating and capability. The 2026 Sierra 2500HD is a distinct heavy-duty chassis from the light-duty Sierra 1500, not a higher trim of it. The 6.6L gas V8 (401 hp) is standard on Pro through SLT; the 6.6L Duramax turbo-diesel V8 (470 hp, 975 lb-ft) is available across the range. RWD is offered only on base Pro; every other trim is 4WD-only. Key figures on record: Powertrain 6.6L V8 gas or 6.6L Duramax turbo-diesel V8, Output 401 / 470 hp, Drivetrain RWD / 4WD, Seating 3 or 6, Maximum towing Up to 22,500 lb (properly equipped). The heavy-duty Sierra's engine lineup, output figures and towing capacity differ from the light-duty Sierra 1500's, so the 1500's figures do not apply.
Current archiveChecked Sep. 13, 2026United States specification
Powertrain6.6L V8 gas or 6.6L Duramax turbo-diesel V8
Output401 / 470 hp
DrivetrainRWD / 4WD
Seating3 or 6
Maximum towingUp to 22,500 lb (properly equipped)
Decision answers56Trim, ownership and verification
Research paths
Move from the vehicle to the decision.
Compare like with like: the closest configuration, not an unrelated advertised maximum.
Record summary
What to know first
The 2026 Sierra 2500HD is a distinct heavy-duty chassis from the light-duty Sierra 1500, not a higher trim of it. The 6.6L gas V8 (401 hp) is standard on Pro through SLT; the 6.6L Duramax turbo-diesel V8 (470 hp, 975 lb-ft) is available across the range. RWD is offered only on base Pro; every other trim is 4WD-only.
Model-year note
The heavy-duty Sierra's engine lineup, output figures and towing capacity differ from the light-duty Sierra 1500's, so the 1500's figures do not apply.
Trim map
How the lineup separates.
Trim descriptions identify the meaningful change from one trim to the next; individual options can still vary.
| Trim | Place in the lineup | Notable equipment |
|---|---|---|
| Pro | Entry trim | See full equipment map |
| SLE | Trim 2 of 7 | See full equipment map |
| SLT | Trim 3 of 7 | See full equipment map |
| AT4 | Trim 4 of 7 | See full equipment map |
| AT4X | Trim 5 of 7 | See full equipment map |
| Denali | Trim 6 of 7 | See full equipment map |
| Denali Ultimate | Top trim | See full equipment map |
01
Entry trim
Pro
02
Trim 2 of 7
SLE
03
Trim 3 of 7
SLT
04
Trim 4 of 7
AT4
05
Trim 5 of 7
AT4X
06
Trim 6 of 7
Denali
07
Top trim
Denali Ultimate
Trim-by-trim specifications
The 2026 GMC Sierra 2500HD: 11 trims compared.
Kelley Blue Book specifications, one row per trim.
| Trim | Engine | Transmission | Drive | Horsepower | Torque (lb-ft) | Seats | Basic warranty |
|---|---|---|---|---|---|---|---|
| Pro (Pickup) | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 3 | 3 yr / 36,000 mi |
| Pro (Pickup) | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 6 | 3 yr / 36,000 mi |
| Pro (Pickup) | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 6 | 3 yr / 36,000 mi |
| SLE (Pickup) | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 3 | 3 yr / 36,000 mi |
| SLE (Pickup) | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 6 | 3 yr / 36,000 mi |
| SLE (Pickup) | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 6 | 3 yr / 36,000 mi |
| SLT | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 6 | 3 yr / 36,000 mi |
| AT4 | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 5 | 3 yr / 36,000 mi |
| Denali | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 5 | 3 yr / 36,000 mi |
| AT4X | 6.6-liter V8 | Automatic, 10-Spd Allison | 4WD | 401 | 464 | 5 | 3 yr / 36,000 mi |
| Denali Ultimate | 6.6-liter V8 (Turbo Diesel) | Automatic, 10-Spd Allison | 4WD | 470 | 975 | 5 | 3 yr / 36,000 mi |
| Trim | Curb weight | Length | Height | Wheelbase | Ground clearance | Turning circle | Fuel tank | Front headroom | Front legroom | Towing | Payload | Tires |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pro (Pickup) | 6,614 lb | 236.3 in | 79.9 in | 142 in | 10.2 in | 46.9 ft | 36 gal | 43.1 in | 44.5 in | 22,050 lb | 3,592 lb | LT245/75R17E |
| Pro (Pickup) | 7,022 lb | 257.2 in | 79.8 in | 162 in | 10.1 in | 53.9 ft | 36 gal | 43 in | 44.5 in | 18,000 lb | 3,434 lb | LT245/75R17E |
| Pro (Pickup) | 7,111 lb | 266.8 in | 79.7 in | 172 in | 10.1 in | 57 ft | 36 gal | 43 in | 44.5 in | 20,000 lb | 3,495 lb | LT245/75R17E |
| SLE (Pickup) | 6,614 lb | 236.3 in | 79.9 in | 142 in | 10.2 in | 46.9 ft | 36 gal | 43.1 in | 44.5 in | 22,050 lb | 3,592 lb | LT245/75R17E |
| SLE (Pickup) | 7,022 lb | 257.2 in | 79.8 in | 162 in | 10.1 in | 53.9 ft | 36 gal | 43 in | 44.5 in | 18,000 lb | 3,787 lb | LT245/75R17E |
| SLE (Pickup) | 7,111 lb | 266.8 in | 79.7 in | 172 in | 10.1 in | 57 ft | 36 gal | 43 in | 44.5 in | 20,000 lb | 3,495 lb | LT245/75R17E |
| SLT | 7,111 lb | 266.8 in | 79.7 in | 172 in | 10.1 in | 57 ft | 36 gal | 43 in | 44.5 in | 20,000 lb | 3,812 lb | LT275/70R18E |
| AT4 | 7,482 lb | 266.8 in | 79.7 in | 172 in | 10.1 in | 57 ft | 36 gal | 43 in | 44.5 in | 18,500 lb | 3,524 lb | LT275/65R20 |
| Denali | 7,111 lb | 266.8 in | 79.7 in | 172 in | 10.1 in | 57 ft | 36 gal | 43 in | 44.5 in | 20,000 lb | 3,812 lb | LT275/65R20 |
| AT4X | 7,502 lb | 250.8 in | 82.7 in | 159 in | 11.6 in | 51.8 ft | 36 gal | 43 in | 44.5 in | 18,500 lb | 3,304 lb | LT305/70R18 |
| Denali Ultimate | 8,353 lb | 266.8 in | 79.7 in | 172 in | 10.3 in | 57 ft | 36 gal | 43 in | 44.5 in | 20,000 lb | 3,153 lb | LT275/65R20 |
Equipment by trim
Which 2026 GMC Sierra 2500HD trim has what.
Std is standard, Opt is optional, a dash means Kelley Blue Book lists it as not available.
| Equipment | Pro (Pickup) | Pro (Pickup) | Pro (Pickup) | SLE (Pickup) | SLE (Pickup) | SLE (Pickup) | SLT | AT4 | Denali | AT4X | Denali Ultimate |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Safety | |||||||||||
| Anti-theft alarm | – | – | – | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Blind-spot alert | Opt | Opt | Opt | Opt | Opt | Opt | Opt | Std | Std | Std | Std |
| Child door locks | – | Std | Std | – | Std | Std | Std | Std | Std | Std | Std |
| Child-seat anchors | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Forward collision warning | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Forward collision warning with automatic braking | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Hill-descent control | Opt | Opt | Opt | Opt | Opt | Opt | Opt | Std | Std | Std | Std |
| Hill-start assist | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Rearview camera | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Surround-view camera | – | – | – | – | Opt | Opt | Opt | Std | Std | Std | Std |
| Electronic stability control | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Traction control | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Technology | |||||||||||
| Bluetooth audio streaming | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Bluetooth | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Hands-free calling | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Built-in internet access | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Navigation system | – | – | – | Std | Std | Std | Std | Std | Std | Std | Std |
| Premium audio system | – | – | – | Opt | Opt | Std | Std | Std | Std | Std | Std |
| Satellite radio | Opt | Opt | Opt | Opt | Opt | Opt | Opt | Opt | Opt | Opt | Opt |
| Apple CarPlay or Android Auto | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Steering-wheel audio controls | – | – | – | Std | Std | Std | Std | Std | Std | Std | Std |
| Touchscreen | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Voice recognition | – | – | – | Std | Std | Std | Std | Std | Std | Std | Std |
| Parental (teen-driver) controls | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Comfort | |||||||||||
| Heated front seats | – | – | – | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Heated rear seats | – | – | – | – | – | – | Opt | Std | Std | Std | Std |
| Heated steering wheel | – | – | – | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Heated mirrors | Std | Opt | Opt | Std | Std | Std | Std | Std | Std | Std | Std |
| Power front seats for driver and passenger | – | – | – | – | – | – | Std | Std | Std | Std | Std |
| Power driver's seat | Opt | Opt | Opt | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Leather seats | – | – | – | – | – | – | Std | Std | Std | Std | Std |
| Leather-wrapped steering wheel | – | – | – | – | – | – | – | – | – | Std | Std |
| Front and rear climate zones | – | Std | Std | – | Std | Std | Std | Std | Std | Std | Std |
| Tilt steering wheel | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Tilt-and-telescoping steering wheel | – | – | – | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Cup holders | – | Std | – | – | Std | Opt | Std | Std | Std | Std | – |
| Folding rear seat | – | Std | Std | – | Std | Std | Std | Std | Std | Std | Std |
| Exterior and convenience | |||||||||||
| Alloy wheels | Opt | Opt | Opt | Std | Std | Std | Std | Std | Std | Std | Std |
| Fog lights | – | – | – | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Privacy glass | Opt | Opt | Opt | Std | Std | Std | Std | Std | Std | Std | Std |
| Power-folding mirrors | Opt | Opt | Opt | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| 12-volt power outlet | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Power windows | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Remote keyless entry | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Remote engine start | – | – | – | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Push-button start | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Cruise control | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Integrated garage-door opener | – | – | – | Opt | Opt | Opt | Opt | Opt | Std | Std | Std |
| Rear-window defroster | Opt | Opt | Opt | Opt | Opt | Opt | Std | Std | Std | Std | Std |
| Rain-sensing wipers | – | – | – | – | – | – | Std | Std | Std | Std | Std |
Direct answers
56 questions tied to this model-year.
Each answer names its source.
Q01How many trims does the 2026 Sierra 2500HD come in?
The 2026 GMC Sierra 2500HD (heavy-duty full-size pickup) comes in 7 trims: Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate.
Source: GMC
Q02What are the 2026 Sierra 2500HD trims?
The 2026 GMC Sierra 2500HD trims are Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate, listed from the entry Pro up to the top Denali Ultimate.
Source: GMC
Q03What engine or powertrain does the 2026 Sierra 2500HD use?
The 2026 GMC Sierra 2500HD is built around 6.6L V8 gas or 6.6L Duramax turbo-diesel V8, rated at 401 / 470 horsepower across its heavy-duty full-size pickup body style.
Source: GMC specifications
Q04Is AWD or 4WD available on the 2026 Sierra 2500HD?
The 2026 GMC Sierra 2500HD is offered with RWD / 4WD.
Source: GMC specifications
Q05What changed for the 2026 Sierra 2500HD?
The heavy-duty Sierra's engine lineup, output figures and towing capacity differ from the light-duty Sierra 1500's, so the 1500's figures do not apply.
Source: GMC model-year information
Q06Which engine oil does each 2026 GMC Sierra 2500HD engine take?
The 2026 GMC Sierra 2500HD owner's manual lists SAE 5W-30 for the gasoline engines (8.0 US quarts), and SAE 5W-30 for the 6.6L Duramax Diesel (10.0 US quarts). Source: 2026 GMC Sierra 2500HD owner's manual.
Source: Manufacturer owner's manual
Q07What torque do the 2026 GMC Sierra 2500HD's wheel nuts need?
The 2026 GMC Sierra 2500HD owner's manual gives 140 lb-ft as the wheel-nut tightening torque. Source: 2026 GMC Sierra 2500HD owner's manual.
Source: Manufacturer owner's manual
Q08What transmission does the 2026 GMC Sierra 2500HD use?
The transmission is Allison 10-speed automatic. Documented for the 2026 GMC Sierra 2500HD in gmc.com, read 2026-06-28.
Source: Manufacturer specifications and press materials
Q09What camera views does the 2026 GMC Sierra 2500HD offer?
Camera views: up to 13 views. Documented for the 2026 GMC Sierra 2500HD in gmc.com "Up to 13 camera views, read 2026-07-22.
Source: Manufacturer specifications and press materials
Q10Does the 2026 GMC Sierra 2500HD come with roadside assistance?
Roadside assistance is included for 5 years / 60,000 miles. Documented for the 2026 GMC Sierra 2500HD in gmc.com (Duramax 5 years / 100,000 miles), read 2026-06-28.
Source: Manufacturer specifications and press materials
Q11What does the 2026 GMC Sierra 2500HD's first maintenance visit include?
The first maintenance visit is documented as 1 visit in year one (oil + tire rotation). Documented for the 2026 GMC Sierra 2500HD in gmc.com, read 2026-06-28.
Source: Manufacturer specifications and press materials
Q12What does the gas engine in the 2026 GMC Sierra 2500HD deliver?
Horsepower: 401 hp. Torque: 464 lb-ft. These figures belong to the gas configuration of the 2026 GMC Sierra 2500HD, not to a trim name: one engine can appear on several trims and one trim can be offered with more than one engine, so match the engine on the window sticker before applying them. Documented 2026-06-28.
Source: Manufacturer specifications and press materials
Q13What does the Duramax engine in the 2026 GMC Sierra 2500HD deliver?
Horsepower: 470 hp. Torque: 975 lb-ft. These figures belong to the Duramax configuration of the 2026 GMC Sierra 2500HD, not to a trim name: one engine can appear on several trims and one trim can be offered with more than one engine, so match the engine on the window sticker before applying them. Documented 2026-06-28.
Source: Manufacturer specifications and press materials
Q14What engines are available on the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD offers 6.6L V8 (L8T).
Source: OEM gmc.com + Edmunds, standard Pro through Denali, prior capture 2026-06-28 (static)
Q15Which 2026 GMC Sierra 2500HD engine has the most horsepower?
The Duramax is the most powerful 2026 GMC Sierra 2500HD engine, at 470 hp.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q16Which 2026 GMC Sierra 2500HD configuration tows the most?
The AT4 configuration tows the most of any 2026 GMC Sierra 2500HD, up to 21,300 lbs.
Source: OEM gmc.com, prior capture 2026-06-28
Q17What is the base MSRP excluding destination of the 2026 GMC Sierra 2500HD Pro?
The 2026 GMC Sierra 2500HD Pro base MSRP excluding destination is $47,000.
Source: OEM gmc.com HD trim page "PRO Starting At $47,000"
Q18What is the base MSRP excluding destination of the 2026 GMC Sierra 2500HD SLE?
The 2026 GMC Sierra 2500HD SLE base MSRP excluding destination is $54,000.
Source: OEM gmc.com "SLE Starting At $54,000"
Q19What is the base MSRP excluding destination of the 2026 GMC Sierra 2500HD SLT?
The 2026 GMC Sierra 2500HD SLT base MSRP excluding destination is $65,200.
Source: OEM gmc.com "SLT Starting At $65,200"
Q20What is the base MSRP excluding destination of the 2026 GMC Sierra 2500HD AT4?
The 2026 GMC Sierra 2500HD AT4 base MSRP excluding destination is $72,200.
Source: OEM gmc.com "AT4 Starting At $72,200"
Q21What is the base MSRP excluding destination of the 2026 GMC Sierra 2500HD Denali?
The 2026 GMC Sierra 2500HD Denali base MSRP excluding destination is $75,200.
Source: OEM gmc.com "DENALI Starting At $75,200"
Q22What is the base MSRP excluding destination of the 2026 GMC Sierra 2500HD AT4X?
The 2026 GMC Sierra 2500HD AT4X base MSRP excluding destination is $85,200.
Source: OEM gmc.com "AT4X Starting At $85,200"
Q23What is the base MSRP excluding destination of the 2026 GMC Sierra 2500HD Denali Ultimate?
The 2026 GMC Sierra 2500HD Denali Ultimate base MSRP excluding destination is $94,200.
Source: OEM gmc.com "DENALI ULTIMATE Starting At $94,200"
Q24What is the horsepower of the 2026 GMC Sierra 2500HD gas?
The 2026 GMC Sierra 2500HD gas horsepower is 401 hp.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q25What is the torque of the 2026 GMC Sierra 2500HD gas?
The 2026 GMC Sierra 2500HD gas torque is 464 lb-ft.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q26What is the diesel engine of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD diesel engine is 6.6L Duramax turbo-diesel V8 (L5P).
Source: OEM gmc.com, available across the lineup, prior capture 2026-06-28 (static)
Q27What is the torque of the 2026 GMC Sierra 2500HD Duramax?
The 2026 GMC Sierra 2500HD Duramax torque is 975 lb-ft.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q28What is the standard engine of the 2026 GMC Sierra 2500HD Denali Ultimate?
The 2026 GMC Sierra 2500HD Denali Ultimate standard engine is 6.6L Duramax diesel.
Source: OEM gmc.com, the only trim with the diesel standard, prior capture 2026-06-28 (static)
Q29What is the max gooseneck fifth-wheel towing of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD max gooseneck fifth-wheel towing is 22,390 lbs.
Source: gmc.com
Q30What is the max conventional towing of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD max conventional towing is 20,000 lbs.
Source: OEM gmc.com, Crew Cab Duramax + Max Trailering NHT, prior capture 2026-06-28
Q31What is the max gooseneck towing of the 2026 GMC Sierra 2500HD Crew Cab?
The 2026 GMC Sierra 2500HD Crew Cab max gooseneck towing is 21,870 lbs.
Source: OEM gmc.com, prior capture 2026-06-28
Q32What is the max towing of the 2026 GMC Sierra 2500HD AT4X?
The 2026 GMC Sierra 2500HD AT4X max towing is 18,500 lbs.
Source: OEM gmc.com, off-road hardware lowers it, prior capture 2026-06-28
Q33What is the payload of the 2026 GMC Sierra 2500HD AT4 4WD Crew Cab?
The 2026 GMC Sierra 2500HD AT4 4WD Crew Cab payload is 3,428 lbs.
Source: Edmunds exact config, prior capture 2026-06-28 (static)
Q34What is the payload of the 2026 GMC Sierra 2500HD AT4X Crew Cab Short Bed?
The 2026 GMC Sierra 2500HD AT4X Crew Cab Short Bed payload is ~3,012 lbs gas / ~2,822 lbs diesel.
Source: OEM gmc.com, off-road hardware reduces payload, prior capture 2026-06-28 (static)
Q35What is the overall length of the 2026 GMC Sierra 2500HD Double Cab standard bed?
The 2026 GMC Sierra 2500HD Double Cab standard bed overall length is 241.22 in.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q36What is the overall length of the 2026 GMC Sierra 2500HD Crew Cab long bed?
The 2026 GMC Sierra 2500HD Crew Cab long bed overall length is 266.77 in.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q37What is the width without mirrors of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD width without mirrors is 81.85 in.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q38What is the curb weight range of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD curb weight range is 6,257 to 8,484 lbs.
Source: OEM gmc.com FAQ
Q39What is the standard bed length of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD standard bed length is 82.3 in.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q40What is the long bed length of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD long bed length is 98.3 in.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q41What are the camera views of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD camera views are up to 13 views.
Source: OEM gmc.com "Up to 13 camera views, including transparent trailer view"
Q42What is the MultiPro tailgate of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD MultiPro tailgate is 6 functions.
Source: OEM gmc.com, featured from SLT up, prior capture 2026-06-28 (static)
Q43What is the infotainment touchscreen of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD infotainment touchscreen is 13.4-inch (SLE up).
Source: OEM gmc.com + Edmunds, prior capture 2026-06-28 (static)
Q44What is the driver cluster of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD driver cluster is 12.3-inch (SLE up).
Source: OEM gmc.com + Edmunds, prior capture 2026-06-28 (static)
Q45What is the head-up display of the 2026 GMC Sierra 2500HD AT4?
The 2026 GMC Sierra 2500HD AT4 head-up display is 15-inch with off-road inclinometer.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q46What is the off-road suspension of the 2026 GMC Sierra 2500HD AT4X?
The 2026 GMC Sierra 2500HD AT4X off-road suspension is factory 1.5-inch lift, DSSV dampers, rear electronic locker.
Source: OEM gmc.com, prior capture 2026-06-28 (static)
Q47What is the trim count of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD trim count is 7 trims: Pro, SLE, SLT, AT4, Denali, AT4X, Denali Ultimate.
Source: OEM gmc.com
Q48What is the roadside assistance of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD roadside assistance is 5 years / 60,000 miles.
Source: OEM gmc.com (Duramax 5 years / 100,000 miles), prior capture 2026-06-28
Q49What is the rust-through warranty of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD rust-through warranty is 6 years / 100,000 miles.
Source: OEM gmc.com, prior capture 2026-06-28
Q50What is the first maintenance visit of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD first maintenance visit is 1 visit in year one (oil + tire rotation).
Source: OEM gmc.com, excludes air filters, prior capture 2026-06-28
Q51What is the oil and rotation interval of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD oil and rotation interval is every ~7,500 to 10,000 mi (never exceed 1 year).
Source: OEM gmc.com GM Oil Life System, prior capture 2026-06-28
Q52What is the Duramax oil spec of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD Duramax oil spec is CK-4 15W-40, ~10 qt.
Source: Manufacturer and dealer research
Q53What is the gas oil spec of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD gas oil spec is dexos1 full synthetic, ~8 qt.
Source: Owner's
Q54What is the 2026 recall count of the 2026 GMC Sierra 2500HD?
The 2026 GMC Sierra 2500HD 2026 recall count is 1 open campaign.
Source: NHTSA.gov
Q55What size wheels does the 2026 GMC Sierra 2500HD have?
The 2026 GMC Sierra 2500HD's wheel diameter is 18 inches on the AT4X and 20 inches on the AT4, Denali and Denali Ultimate. Source: Kelley Blue Book specifications.
Source: Kelley Blue Book vehicle specifications
Q56How do the 2026 GMC Sierra 2500HD trims differ from one another?
The Pro (Pickup) has child door locks, cup holders, a folding rear seat and front and rear climate zones as standard equipment over the Pro (Pickup). The SLE (Pickup) has alloy wheels, heated mirrors, a navigation system and 3 more as standard equipment over the Pro (Pickup). The SLE (Pickup) has child door locks, cup holders, a folding rear seat and front and rear climate zones as standard equipment over the SLE (Pickup). The SLE (Pickup) has a premium audio system as standard equipment over the SLE (Pickup). The SLT has an anti-theft alarm, cup holders, power front seats for driver and passenger and 10 more as standard equipment over the SLE (Pickup).
Source: Kelley Blue Book vehicle specifications
Live NHTSA evidence
Current federal safety records for 2026 GMC Sierra 2500HD.
Exact-vehicle evidence desk
Move from the guide to the VIN record.
Trim research establishes the marketed lineup. These primary-source paths resolve recall applicability, manufacturer-submitted identity fields and exact EPA configuration data.
01 · NHTSARatings, recalls, complaints and manufacturer communicationsExact model-year search → (opens in a new tab)02 · NHTSACheck unresolved safety recalls by VINOfficial remedy status → (opens in a new tab)03 · vPICDecode manufacturer-submitted vehicle attributesInternal VIN tool →04 · EPAResolve the exact fuel-economy configuration1984–current browser →
Source trail
Evidence behind the record
01
GMC Sierra 2500HD official model pageManufacturer lineup, equipment and specifications
↗ (opens in a new tab)02FuelEconomy.gov vehicle dataEPA-certified configuration and fuel-economy records
↗ (opens in a new tab)03NHTSA vehicle data and recallsVIN attributes, safety campaigns and ratings
↗ (opens in a new tab)Specifications and pricing can change after publication. Critical purchasing decisions should be confirmed against the exact vehicle window sticker or manufacturer build record.