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2026 GMC Sierra 2500 AT4X specs & colors

MSRP
2WD Reg Cab 142" Pro
$47,000
2WD Double Cab 149" Pro
$48,900
2WD Double Cab 162" Pro
$49,100
4WD Reg Cab 142" Pro
$49,800
2WD Crew Cab 159" Pro
$50,700
2WD Crew Cab 172" Pro
$50,900
4WD Double Cab 149" Pro
$51,700
4WD Double Cab 162" Pro
$51,900
4WD Crew Cab 159" Pro
$53,500
4WD Crew Cab 172" Pro
$53,700
4WD Reg Cab 142" SLE
$54,000
4WD Double Cab 149" SLE
$56,100
4WD Double Cab 162" SLE
$56,300
4WD Crew Cab 159" SLE
$57,900
4WD Crew Cab 172" SLE
$58,100
4WD Crew Cab 159" SLT
$65,200
4WD Crew Cab 172" SLT
$65,500
4WD Crew Cab 159" AT4
$72,200
4WD Crew Cab 172" AT4
$72,400
4WD Crew Cab 159" Denali
$75,200
4WD Crew Cab 172" Denali
$75,400
4WD Crew Cab 159" AT4X
$85,200
4WD Crew Cab 159" Denali Ultimate
$94,200
4WD Crew Cab 172" Denali Ultimate
$94,500
$85,200
Starting MSRP
Current listing price
2026 GMC Sierra 2500 AT4X

Showing the 2026 GMC Sierra 2500 4WD Crew Cab 159" AT4X

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Key specs

Color options

Interior
Obsidian Rush

Packages

  • $0

    Starting MSRP

    • includes standard equipment

Specifications

Highlights

Gas V8
Engine Type
-
MPG
401 hp
470 hp
Horsepower
5
Seating Capacity

Brakes

N/A
Drum - Rear (Yes or )
Yes
Disc - Front (Yes or )
N/A
Brake ABS System (Second Line)
Pwr
Brake Type
4-Wheel
Brake ABS System
14.1 x 1.3 in
Rear Brake Rotor Diam x Thickness
14 x 1.6 in
Front Brake Rotor Diam x Thickness
Yes
Disc - Rear (Yes or )

Electrical

720
Cold Cranking Amps @ 0° F (Primary)
170
Maximum Alternator Capacity (amps)

Engine

464 @ 4000
SAE Net Torque @ RPM
401 @ 5200
SAE Net Horsepower @ RPM
6.6L/-TBD-
Displacement
Gas V8
Engine Type
10-Speed A/T
A/T
Transmission Options
-
MPG
N/A
Total Cooling System Capacity

Entertainment

Standard
Bluetooth®
Optional
Bluetooth®

Measurements

66 in
Front Shoulder Room
N/A
Overhang, Front
70 ft³
Cargo Volume
65 in
Second Shoulder Room
N/A
Tailgate Width
N/A
Ext'd Cab Cargo Volume
12 in
Ground Clearance, Rear
71 in
Cargo Box Width @ Floor
251 in
Length, Overall
12 in
Ground Clearance, Front
82 in
Width, Max w/o mirrors
5
Passenger Capacity
45 in
Front Leg Room
82 in
Cargo Box Length @ Floor
83 in
Height, Overall
60 in
Second Hip Room
N/A
Length, Overall w/o rear bumper
N/A
Ground to Top of Load Floor
43 in
Second Leg Room
40 in
Second Head Room
159 in
Wheelbase
40 in
Front Head Room
N/A
Overhang, Rear w/o bumper
52 in
Cargo Box Width @ Wheelhousings
N/A
Length, Overall w/rear bumper
N/A
Cargo Box Width @ Top, Rear
61 in
Front Hip Room
21 in
Cargo Box (Area) Height
N/A
Cab to End of Frame

Safety

Optional
Rear Cross Traffic Alert
Optional
Backup Camera
Standard
Navigation System
Standard
Lane Departure Warning
Standard
Stability Control

Steering

N/A
Turning Diameter - Wall to Wall
Pwr Recirculating Ball
Steering Type
N/A
Steering Ratio (:1), Overall
52 ft
Turning Diameter - Curb to Curb

Suspension

3-Stage Multi-Leaf
Suspension Type - Rear
N/A
Axle Type - Rear
Torsion Bar
Suspension Type - Front
N/A
Axle Type - Front

Tires & Wheels

LT305/70R18
Front Tire Size
Aluminum
Front Wheel Material
Aluminum
Rear Wheel Material
N/A
Spare Wheel Material
18 x -TBD- in
Spare Wheel Size
18 x -TBD- in
Rear Wheel Size
LT305/70R18
Spare Tire Size
18 x -TBD- in
Front Wheel Size
LT305/70R18
Rear Tire Size

Weight & Capacity

5,000 lbs
Dead Weight Hitch - Max Trailer Wt.
11,025 lbs
Gross Vehicle Weight Rating
500 lbs
Dead Weight Hitch - Max Tongue Wt.
18,500 lbs
Maximum Trailering Capacity
0 lbs
Total Option Weight
6,825 lbs
As Spec'd Curb Weight
0 lbs
Option Weight - Rear
N/A
Base Curb Weight
36 gal
Fuel Tank Capacity, Approx
1,600 lbs
Wt Distributing Hitch - Max Tongue Wt.
11,800 lbs
Gross Axle Weight Rating
16,000 lbs
Wt Distributing Hitch - Max Trailer Wt.
4,500 lbs
Fifth Wheel Hitch - Max Tongue Wt.
4,200 lbs
As Spec'd Payload
26,000 lbs
Gross Combined Wt Rating
4,200 lbs
Maximum Payload Capacity
6,825 lbs
Curb Weight
0 lbs
Option Weight - Front
18,000 lbs
Fifth Wheel Hitch - Max Trailer Wt.
N/A
Aux Fuel Tank Capacity, Approx
4,013 lbs
Curb Weight - Front
2,812 lbs
Curb Weight - Rear

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2026 GMC Sierra 2500 AT4X

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