Used 2020 GMC Sierra 2500HD AT4 Specs & Features

Starting MSRP

$57,700

Overview

Gas Engine

Drive Type	four wheel drive
Total Seating	5
Bed length	82.2 in.
Payload Capacity	3,760 lbs.
Towing Capacity	18,500 lbs.
Curb Weight	6,852 lbs.
Basic Warranty	3 yr./ 36,000 mi.
Country of final assembly	United States

Fuel & MPG

Fuel type	Regular unleaded
Range in miles (city/hwy)	0/0 mi.
Fuel tank capacity	36.0 gal.

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Engine

Base engine size	6.6 L
Cylinders	V8
Base engine type	Gas

Horsepower	401 hp @ 5,200 rpm
Torque	464 lb-ft @ 4,000 rpm
Valves	16
Cam type	Overhead valves (OHV)
Valve timing	Variable
Direct injection	Standard

Towing & Hauling

Max Towing Capacity	18,500 lbs.
Max Payload Capacity	3,760 lbs.

Drivetrain

Transmission	6-speed shiftable automatic
Drive type	Four wheel drive
On demand 4WD	Standard

Electronic hi-lo gear selection	Standard
Automatic locking hubs	Standard
Rear locking differential	Standard
Descent control	Standard

Incentives

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Suspension

Front independent suspension	Standard
Stabilizer bar stabilizer bar	Standard

Dimensions

Length	250.1 in.
Overall width without mirrors	81.9 in.
Height	79.8 in.

Wheelbase	158.9 in.
Bed length	82.2 in.
Turning circle	52.7 ft.
Ground clearance	10.1 in.
Curb weight	6,852 lbs.
Maximum towing capacity	18,500 lbs.
Maximum payload	3,760 lbs.
Gross weight	10,650 lbs.
Country of final assembly	United States

Colors

Exterior Colors	Summit White Quicksilver Metallic Pacific Blue Metallic Red Quartz Tintcoat Dark Sky Metallic Onyx Black Brownstone Metallic Carbon Black Metallic
Interior Colors	Jet Black w/Kalahari Accents, leather

Front Seat Dimensions

Front head room	43.0 in.
Front leg room	44.5 in.
Front shoulder room	66.0 in.

Front hip room	61.2 in.
Leather	Standard
Bucket front seats	Standard
8-way power driver seat	Standard
Height adjustable driver seat	Standard
Driver seat with power adjustable lumbar support	Standard
2 memorized driver seat settings	Standard
8-way power passenger seat	Standard
Height adjustable passenger seat	Standard
Passenger seat with power adjustable lumbar support	Standard
Multi-level heated driver seat	Standard
Multi-level heated passenger seat	Standard
Ventilated driver seat	Standard
Ventilated passenger seat	Standard

Rear Seat Dimensions

Rear head room	39.9 in.
Rear leg room	43.4 in.
Rear shoulder room	65.3 in.

Rear hip room	60.2 in.
Split-folding rear seatback	Standard
Folding center armrest	Standard
Multi-level heated	Standard

Safety

Post-collision safety system	Standard
Dual front side-mounted airbags	Standard
Front and rear head airbags	Standard

Passenger airbag occupant sensing deactivation	Standard
Stability control	Standard
Traction control	Standard
Child seat anchors	Standard
Rear door child safety locks	Standard
4-wheel ABS	Standard
Front and rear ventilated disc brakes	Standard
Tire pressure monitoring	Standard
Dusk sensing headlamps	Standard
Auto delay off headlamps	Standard
LED headlamp	Standard
Daytime running lights	Standard
Front fog/driving lights	Standard
Turn signal mirrors	Standard
2 front headrests	Standard
Front height adjustable headrests	Standard
2 rear headrests	Standard
Rear height adjustable headrests	Standard
Rear center 3-point belt	Standard
Remote anti-theft alarm system	Standard
Engine immobilizer	Standard

Build Your 2025 Sierra 2500HD

At a Glance:

$46,300starting MSRP

Build & Price GMC.com

*The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.

In-Car Entertainment

AM/FM stereo	Standard
6 total speakers	Standard
Android Auto/Apple CarPlay	Standard

USB connection	Standard
Auxiliary audio input and USB with external media control	Standard
Memory card slot	Standard
Satellite radio satellite radio	Standard
Speed sensitive volume control	Standard

Power Feature

4 one-touch power windows	Standard
Hands-free entry	Standard
Heated mirrors	Standard

Comfort & Convenience

Keyless ignition	Standard
Tilt-adjustable steering wheel	Standard
Audio and cruise controls on steering wheel	Standard

Power steering	Standard
Rear view camera	Standard
Cruise control	Standard
Front and rear cupholders	Standard
Front and rear door pockets	Standard
Front seatback storage	Standard
Leather steering wheel	Standard
Heated steering wheel	Standard
Dual zone front climate control	Standard
Rear ventilation ducts	Standard
Sun sensor	Standard
Dual illuminating vanity mirrors	Standard
Electrochromatic inside rearview mirror	Standard
Turn signal in mirrors	Standard

Instrumentation

Trip computer	Standard
Compass	Standard
External temperature display	Standard

Tachometer	Standard
Clock	Standard

Tires & Wheels

Painted alloy wheels	Standard
18 in. wheels	Standard
All terrain tires	Standard

LT275/70R18 tires	Standard
Fullsize non-matching spare tire	Standard
Underbody mounted spare tire	Standard

Telematics

Emergency Service	Standard
Airbag Deployment Notification	Standard
Stolen Vehicle Tracking/Assistance	Standard

Hands-Free Calling	Standard
Roadside Assistance	Standard
Concierge Service	Standard
Destination guidance (also Turn-by-Turn Navigation)	Standard
Destination Download	Standard

Warranty

Basic	3 yr./ 36,000 mi.
Drivetrain	5 yr./ 60,000 mi.
Rust	6 yr./ 100,000 mi.

Roadside assistance	5 yr./ 60,000 mi.
Free maintenance	1 yr./ unlimited mi.

Mechanical Options

Engine Block Heater	+$100
220 Amp Alternator	+$150
Heavy Duty Front Spring Package	+$45

Trailering Wiring Provisions	+$35
Duramax 6.6L Turbo-Diesel V8 Engine	+$9,890
Auxiliary Battery	+$135
Gooseneck/5th Wheel Package	+$795
Dual Alternators	+$380
Gooseneck Hitch Package	+$295
High Idle Switch	+$200

Packages

Cargo Convenience Package	+$515
Technology Package	+$2,125
AT4 Premium Package	+$3,465

Snow Plow Prep Package	+$380
AT4 Preferred Package	+$1,475

Safety & Security Options

Driver Alert Package I	+$890
Driver Alert Package II	+$645

Interior Options

Rear Seat Infotainment System w/DVD Player	+$1,995
Lockable Console Vault	+$295
Rear Under Seat Storage	+$265

Exterior Options

Tri-Fold Hard Tonneau Cover	+$1,100
Standard Tailgate	Standard
Smoked Amber LED Roof Marker Lamps	+$55

20" 6-Spoke Bright Machined Aluminum Wheels w/High Gloss Black Accents	+$1,100
Power Glass Sunroof	+$995
Tri-fold Soft Tonneau Cover	+$700
Bed View Camera	+$250
Chromed 6" Rectangular Tubular Assist Steps	+$795
Black Front and Rear Molded Splash Guards	+$180
6" Rectangular Black Tubular Assist Steps	+$750
Rubber Bed Mat	+$155
Black 3" Round Off-Road Assist Steps	+$965
Front License Plate Kit	+$0
Auxiliary Trailer Camera	+$595
LT275/65R20 All-Terrain Blackwall Tires	+$200
20" High Gloss Black Painted Wheels	+$2,995

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Used 2020 GMC Sierra 2500HD AT4 - Specs & Features