2021 GMC Sierra 2500 AT4 specs & colors

Crew Cab Pickup

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$59,100

Starting MSRP
Current Listing Price

Showing the 2021 GMC Sierra 2500 4WD Crew Cab 159" AT4

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Key Specs

4-door

5 seats

445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

0 combined MPG

235.5" length, 79.94" height

Four Wheel Drive

Color options

Exterior

Interior

Jet Black with Kalahari accents

Packages

Driver Alert Package II

$645

Starting MSRP

includes (UEU) Forward Collision Alert
(UFL) Lane Departure Warning
(UHY) Automatic Emergency Braking

Snow Plow Prep/Camper Package

$150

Starting MSRP

includes (KW5) 220-amp alternator
includes increased front GAWR on Heavy Duty models
(NZZ) skid plates (transfer case and oil pan)

AT4 Preferred Equipment Group

Starting MSRP

includes standard equipment

See all packages

Gooseneck / 5th Wheel Package

$795

Starting MSRP

includes (Z6A) Gooseneck / 5th Wheel Prep Package.(Includes (UVN) Bed View Camera.

AT4 Premium Plus Package

$7,975

Starting MSRP

includes (PDO) AT4 Preferred Package
(PQB) Driver Alert Package I
(PDJ) Driver Alert II

Driver Alert Package I

$890

Starting MSRP

includes (UD5) Front and Rear Park Assist
(UKC) Lane Change Alert with Side Blind Zone Alert and (UFG) Rear Cross Traffic Alert(Includes Perimeter Lighting.

Technology Package

$1,475

Starting MSRP

includes (DRZ) Rear Camera Mirror and (UV6) Multi-color 15" Diagonal Head-Up DisplayIncludes (UHS) 8" Digital Driver information Center.

AT4 Preferred Package

$2,075

Starting MSRP

includes (UVN) Bed View Camera
(UVS) HD Surround Vision with Two Trailer View Camera Provisions
(UG1) Universal Home Remote

Specifications

Front Wheel Size	18 x -TBD- in
Rear Wheel Size	18 x -TBD- in
Spare Wheel Size	18 x -TBD- in
Front Wheel Material	Aluminum
Rear Wheel Material	Aluminum
Spare Wheel Material	Steel

EPA Fuel Economy Est - Hwy	N/A MPG
Cruising Range - City	N/A mi
EPA Fuel Economy Est - City	N/A MPG
Fuel Economy Est-Combined	N/A MPG
Cruising Range - Hwy	N/A mi
Estimated Battery Range	N/A mi

Drivetrain	Four Wheel Drive
Trans Type	6
Trans Description Cont.	Automatic
Trans Description Cont. Again	N/A
First Gear Ratio (:1)	4.03
Second Gear Ratio (:1)	2.36
Third Gear Ratio (:1)	1.53
Fourth Gear Ratio (:1)	1.15
Fifth Gear Ratio (:1)	0.85
Sixth Gear Ratio (:1)	0.67
Reverse Ratio (:1)	3.06
Trans Power Take Off	N/A
Final Drive Axle Ratio (:1)	N/A
Transfer Case Model	N/A
Transfer Case Gear Ratio (:1), High	N/A
Transfer Case Gear Ratio (:1), Low	N/A
Transfer Case Power Take Off	N/A

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

Dead Weight Hitch - Max Trailer Wt.	5000 lbs
Dead Weight Hitch - Max Tongue Wt.	500 lbs
Wt Distributing Hitch - Max Trailer Wt.	14500 lbs
Wt Distributing Hitch - Max Tongue Wt.	1450 lbs
Fifth Wheel Hitch - Max Trailer Wt.	N/A lbs
Fifth Wheel Hitch - Max Tongue Wt.	N/A lbs
Maximum Trailering Capacity	18500 lbs

Base Curb Weight	N/A lbs
Curb Weight - Front	3854 lbs
Curb Weight - Rear	2788 lbs
Option Weight - Front	0.00 lbs
Option Weight - Rear	0.00 lbs
As Spec'd Curb Weight	6888.00 lbs
As Spec'd Payload	3762.00 lbs
Maximum Payload Capacity	4008.00 lbs
Gross Combined Wt Rating	24000 lbs
Gross Axle Weight Rating	11400.00 lbs
Curb Weight	6642.00 lbs
Total Option Weight	0.00 lbs
Gross Vehicle Weight Rating	10650.00 lbs

Passenger Capacity	5
Front Head Room	43.03 in
Front Leg Room	44.53 in
Front Shoulder Room	66.02 in
Front Hip Room	61.18 in
Second Head Room	40.12 in
Second Leg Room	43.4 in
Second Shoulder Room	65.3 in
Second Hip Room	60.24 in
Wheelbase	158.94 in
Length, Overall w/o rear bumper	N/A in
Length, Overall w/rear bumper	N/A in
Length, Overall	250.08 in
Width, Max w/o mirrors	81.85 in
Height, Overall	79.82 in
Overhang, Front	N/A in
Overhang, Rear w/o bumper	N/A in
Cab to End of Frame	N/A in
Ground to Top of Load Floor	N/A in
Ground Clearance, Front	10.12 in
Ground Clearance, Rear	10.12 in
Cargo Box Length @ Floor	82.2 in
Cargo Box Width @ Top, Rear	N/A in
Cargo Box Width @ Floor	71.4 in
Cargo Box Width @ Wheelhousings	51.85 in
Cargo Box (Area) Height	21 in
Tailgate Width	N/A in
Cargo Volume	69.5 ft³
Ext'd Cab Cargo Volume	N/A ft³

4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)	Optional
SiriusXM Radio with 360L Equipped with SiriusXM with 360L. Enjoy a trial subscription of the All Access package for the full 360L experience, with a greater variety of SiriusXM content, a more personalized experience and easier navigation. With the All Access package, you can also enjoy your favorites everywhere you go, with the SiriusXM app, online and at home on compatible connected devices. (IMPORTANT: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM Customer Agreement at www.siriusxm.com for complete terms and how to cancel. All fees, content, features, and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.)	Optional
Audio system, Premium GMC Infotainment System with 8" diagonal color touch-screen includes multi-touch display, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings (STD) (Includes (PZ8) Hitch Guidance with hitch view.)	Optional
SiriusXM Radio	Optional
Bluetooth for phone, connectivity to vehicle infotainment system	Standard
Radio, HD	Optional
Wireless Phone Projection for Apple Carplay and Android Auto	Optional
Audio system feature, 6-speaker system	Standard

Tailgate, GMC MultiPro Tailgate with six functional load/access features	Optional
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light	Optional
Headlamps, LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps	Optional
Tires, LT275/70R18E all-terrain, blackwall (STD)	Optional
Mirror caps, high gloss Black	Optional
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door	Standard
Wheels, 18" (45.7 cm) machined aluminum wheel with Dark Grey metallic accents (STD)	Optional
Glass, deep-tinted	Optional
Door handles, body-color	Optional
Bumper, front, body-color lower	Optional
CornerStep, rear bumper	Standard
Bed Liner, Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (AT4 logo replaces GMC logo. Not available with any Ship Thrus EXCEPT (VSH), (VTV), (TCH) or (TCE).)	Optional
Tire, spare LT275/70R18 all-terrain, blackwall	Optional
Lamps, cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel	Standard
Tailgate and bed rail protection caps, top	Standard
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, power folding/extending (extends 3.31" [84.25mm])	Optional
Cargo tie downs (12), fixed rated at 500 lbs per corner	Standard
Taillamps, LED signature taillight with LED stop and reverse light	Optional
LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob	Optional
Bumper, rear body-color with bumper CornerSteps	Optional
Wheelhouse liners, rear	Optional
Fog lamps, LED	Optional
Grille (Painted Black surround with high gloss Black mesh and Black chrome inserts.)	Optional
Moldings, beltline, Black	Standard
Bed Step, Black integrated on forward portion of bed on driver and passenger side	Standard

Theft-deterrent system, unauthorized entry	Optional
Premium Floor Liners with removable carpet insert, rear	Optional
Seats, heated second row outboard seats	Optional
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)	Optional
Power outlet, rear auxiliary, 12-volt	Optional
Seat trim, Perforated leather-appointed front	Optional
Steering wheel, heated	Optional
Air conditioning, dual-zone automatic climate control	Optional
Steering wheel, leather-wrapped	Optional
Defogger, rear-window electric	Optional
Driver Information Center, 4.2" diagonal color display includes driver personalization	Optional
Steering wheel audio controls	Optional
Exterior Temperature Display, located in radio display	Standard
Seat adjuster, passenger 10-way power including lumbar	Optional
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)	Optional
Window, power front, passenger express up/down	Optional
Remote vehicle starter system	Optional
USB ports, 2 (first row) located on instrument panel	Standard
Power outlet, front auxiliary, 12-volt	Standard
Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted	Standard
Keyless Open and Start	Optional
Mirror, inside rearview auto-dimming	Optional
Door locks, power	Standard
GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details)	Optional
Seat adjuster, driver 10-way power including lumbar	Optional
Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability	Optional
Seats, front bucket with center console (STD)	Optional
Cruise control, steering wheel-mounted	Optional
Premium Floor Liners with removable carpet insert, front	Optional
Steering column, lock control, electrical	Optional
USB ports, dual, charge-only (2nd row)	Optional
Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure	Standard
Rear Seat Reminder	Standard
Windows, power front, drivers express up/down	Standard
Compass, located in instrument cluster	Optional
Windows, power rear, express down	Standard
Steering column, manual Tilt-Wheel and telescoping	Optional
Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)	Optional
Air vents, rear	Standard
Seating, heated driver and front outboard passenger	Optional
Seats, ventilated driver and front passenger	Optional
USB Ports (Inside Console with bucket seats), 2 also includes 1 SD card reader and auxiliary jack	Optional
Floor covering, color-keyed carpeting	Optional
Driver memory recalls driver "presets" for power driver seat and outside mirrors	Optional

Air filter, heavy-duty	Standard
Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)	Standard
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section	Standard
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors	Standard
Trailer brake controller, integrated	Optional
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)	Standard
Recovery hooks, Red	Optional
Four wheel drive	Standard
Auto-locking rear differential	Standard
Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)	Standard
Engine, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline, (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm) (STD)	Standard
Cooling, auxiliary external transmission oil cooler	Standard
Brake lining wear indicator	Standard
Transfer case, two-speed active, electronic Autotrac with push button control	Optional
In-vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed.)	Optional
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)	Optional
Pickup bed includes bed assist step (STD)	Standard
Skid Plates protect the oil pan, front axle and transfer case	Optional
Hill Descent Control	Optional
Steering, Digital Variable Steering Assist This system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue	Optional
GVWR, 10,650 lbs. (4831 kg) (STD) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18" or 20" wheels or TK20943 and (L8T) 6.6L V8 gas engine with 17" wheels.)	Optional
Transmission, 6-speed automatic, heavy-duty (STD)	Standard
Air filtration monitoring	Standard
Cooling, external engine oil cooler	Standard
Suspension, Off-Road includes twin-tube shocks	Optional

ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App	Optional
X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks	Optional
Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance	Standard

HD Rear Vision Camera	Optional
OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)	Optional
Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver	Standard
Daytime Running Lamps, LED signature lighting	Standard
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching	Standard
Tire Pressure Monitoring System with Tire Fill Alert (does not apply to spare tire)	Standard
Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt	Optional
Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)	Standard
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist	Standard

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Engine Type	Gas V8
Displacement	6.6L/-TBD-
SAE Net Horsepower @ RPM	401 @ 5200
SAE Net Torque @ RPM	464 @ 4000
Engine Oil Cooler	N/A

Suspension Type - Front	Short/Long Arm
Suspension Type - Rear	Multi-Leaf Springs
Axle Type - Front	N/A
Axle Type - Rear	N/A

Fuel Tank Capacity, Approx	36 gal
Aux Fuel Tank Capacity, Approx	N/A gal

Steering Type	Pwr Recirculating Ball
Steering Ratio (:1), Overall	N/A
Turning Diameter - Curb to Curb	52.7 ft
Turning Diameter - Wall to Wall	N/A ft

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

Front Tire Size	LT275/70R18E
Rear Tire Size	LT275/70R18E
Spare Tire Size	LT275/70R18

2021 GMC Sierra 2500 AT4 specs & colors

Crew Cab Pickup

Key Specs

Color options

Packages

Specifications

Wheels

Electrical

Engine

Mileage

Transmission

Suspension

Frame

Brakes

Fuel Tank

Steering

Tires

Trailering

Weight Information

Dimensions

Entertainment

Exterior

Interior

Mechanical

Package

Processing-Other

Safety

Compare trims