CAR.SPACE

Denali T1XX

T1XX · 2020–2024RWDPickup

The Sierra 3500HD Denali is a four-door, six-seat rear-wheel-drive pickup built from 2020 to 2024. It has a 6.6-litre turbo-diesel V8 making 470 PS and 975 Nm, with an Allison 10-speed automatic gearbox.

464 hpPower
2020-2024Year
Engineering passport

Specifications

Powertrain
Engineering details
Engine6.6L turbo-diesel V8
Displacement6.6 L
Cylinders8
FuelDiesel
Transmission10-speed Allison Automatic
DrivetrainRWD
Performance
Numbers that matter
Power464 hp
Torque975 Nm
Dimensions & body
Width2057 mm
Height2032 mm
BodyPickup
Doors4
Seats6

STORY

The Sierra 3500HD is GMC's one-ton heavy-duty pickup and the highest-capacity truck in the Sierra range, with dual-rear-wheel (dually) versions available. It is built for the highest payload and for fifth-wheel/gooseneck towing, and it pairs the Duramax turbo-diesel with the Allison automatic for commercial and heavy-hauling work. It shares its platform with the Chevrolet Silverado 3500HD.

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