2025 GMC Sierra 3500 HD AT4 – 401 HP Heavy-Duty Pickup Truck
Specifications
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Specification |
Details |
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Model |
Sierra 3500 HD AT4 |
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Vehicle Category |
Heavy-Duty Pickup Truck |
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Fuel Type |
Gasoline; optional Diesel |
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Application |
Heavy-duty towing, commercial work |
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Starting Price(2025) |
$73,200 (4WD, Crew Cab, Standard Bed, SRW), including $1,995 destination charge; as shown: $71,000(2025) |
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Color Options |
Exterior: Onyx Black ($495), Summit White (no cost), Sterling Metallic ($495), Volcanic Red Tintcoat ($645), Titanium Rush Metallic ($495), Redwood Metallic ($495), Meteorite Metallic ($495), Downpour Metallic ($495); Interior: Jet Black with Kalahari accents (leather) |
Frame & Drivetrain
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Specification |
Details |
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Engine |
6.6L V8, gasoline, direct injection (401 HP, 464 lb-ft); optional: 6.6L Duramax Turbo Diesel V8 (470 HP, 975 lb-ft) |
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Gross Horsepower |
401 HP @ 5200 RPM (6.6L V8 Gas) |
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Torque |
464 lb-ft @ 4000 RPM (6.6L V8 Gas) |
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Transmission Type |
Allison 10-speed automatic |
Suspension & Brakes
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Specification |
Details |
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Suspension |
Off-road suspension with twin-tube Rancho shocks, skid plates, 2 in. factory lift |
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Brakes |
4-wheel disc brakes, 14.0 in. front rotors, 14.1 in. rear rotors, 4-wheel ABS |
Wheels & Tyres
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Specification |
Details |
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Wheels & Tyres |
20 x 8.5 in. gloss-black aluminum wheels, LT275/65R20 all-terrain blackwall tires (SRW); optional: BFGoodrich off-road tires |
Components & Features
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Specification |
Details |
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Chassis |
Body-on-frame, GM T1 platform |
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Seating |
5 passengers (bucket seats), perforated leather front seats with Jet Black/Kalahari accents, 10-way power driver/passenger seats, heated/ventilated front seats, heated rear outboard seats |
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Infotainment |
13.4 in. diagonal center touch-screen, 12.3 in. diagonal Driver Information Center, wireless Apple CarPlay/Android Auto, AM/FM stereo, 7-speaker Bose audio, SiriusXM, OnStar, myGMC mobile app, Google Built-In; optional: 15 in. diagonal Head-Up Display with off-road inclinometer |
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Safety Features |
Sierra HD Pro Safety: Forward Collision Alert, Following Distance Indicator, Front Pedestrian Braking, IntelliBeam, Lane Departure Warning, Buckle to Drive, Automatic Emergency Braking; additional: StabiliTrak, traction control, 4-wheel ABS, dual front/side-impact airbags, head-curtain airbags, Rear Vision Camera, Trailer Side Blind Zone Alert, Rear Cross-Traffic Alert, Adaptive Cruise Control, HD Surround Vision with up to 14 camera views (including Transparent Trailer View); optional: Rear Park Assist |
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Convenience Features |
MultiPro Tailgate, trailering package, trailering mirrors, LED headlamps/daytime running lamps, ProGrade Trailering System with In-Vehicle Trailering App, integrated trailer brake controller, spray-in bedliner, recovery hooks, dual-zone climate control, heated steering wheel, power windows/locks, remote keyless entry, push-button start, rain-sensing wipers; optional: power-retractable assist steps, 15 in. diagonal Head-Up Display |
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Cargo Capacity |
Standard box: 69.5 cu.ft., long box: 83.5 cu.ft., max payload: 6658 lbs (Crew Cab, SRW), max towing: 20,000 lbs (conventional), 36,000 lbs (gooseneck/fifth-wheel, diesel, DRW) |
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Fuel Tank |
36 gal |
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Weight |
7449 lbs (curb weight, 4WD, Crew Cab, gas engine, SRW) |
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Width |
81.9 in. (2077 mm, SRW); 96.6 in. (2454 mm, DRW, without mirrors) |
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Length |
257.2 in. (6533 mm, Crew Cab, standard box); 270.3 in. (6866 mm, Crew Cab, long box) |
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Max Height |
80.2 in. (2037 mm, SRW); 79.7 in. (2024 mm, DRW) |
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Ground Clearance |
11.2 in. (284 mm, SRW); 10.4 in. (264 mm, DRW) |