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2019 GMC Sierra 3500HD SLE Diesel

The 2019 GMC Sierra 3500HD SLE Diesel is a 445-hp 6.6-liter turbocharged with an allison 1000 6-speed automatic and four-wheel drive.

Spec Value
Engine
Engine TypeDuramax 6.6L V-8 Turbo-Diesel; cast iron block, cast aluminum heads
Displacement6.6 L
Horsepower445 hp
Torque910 lb-ft
ValvetrainOHV, 4 valves/cyl
Bore and Stroke103 x 99
Injection TypeCommon-rail direct fuel injection
Drivetrain
Drive Type2WD or 4WD (SRW or DRW)
Transmission
TransmissionAllison 1000 6-speed automatic
1st Gear3.09
2nd Gear1.81
3rd Gear1.4
4th Gear1
5th Gear0.71
6th Gear0.61
Reverse4.48
Final Drive3.73
Fuel Economy
Recommended FuelUltra-low-sulfur diesel
Suspension
Front SuspensionLong- and short-arm independent front torsion bar suspension
Rear SuspensionSemi-elliptic three-stage multi-leaf spring
Brakes
Front Brake CalipersVented disc 13.98 in (355 mm); Hydroboost power assist; four-wheel ABS
Tires & Wheels
Wheels Front17 in steel (std)
Wheels Rear17 in steel (std SRW); 17 in forged polished alum (opt)
Tires FrontLT235/80R17 all-season (std)
Tires RearLT235/80R17 all-season (std)
Dimensions & Weight
Length239.4 in
Width80.5 in
Height78.3 in
Wheelbase153.7 in
Curb Weight6 lbs
Interior
Headroom Front42.8 in
Headroom Rear40.5 in
Legroom Front45.3 in
Legroom Rear40.9 in
Shoulder Room Front64.8 in
Shoulder Room Rear64.3 in
Hip Room Front60.7 in
Hip Room Rear60.2 in
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