2020 GMC Sierra 2500HD Double Cab - Specs, Features, 0-60 and Top Speed

2020 GMC Sierra 2500HD Double Cab
MSRP$38,200
Specs
- origin countryUnited States
- engine6.6 L
- horsepower401 hp @ 5200 rpm
- torque464 lb.-ft. @ 4000 rpm
- transmission6-Speed Shiftable Automatic
- 0-60 time6.5 sec
- combined fuel economy18 mpg
Trims
performance
zero to 60 mph | 6.5 sec |
engines
valvetrain | Overhead Valves (OHV) |
transmission | 6-Speed Shiftable Automatic |
engine type | V8 |
compression ratio | 10.80 to 1 |
valves | 32 |
engine bore x stroke | 4.1 x 3.9 |
engine size | 6.6 L |
engine horsepower | 401 hp @ 5200 rpm |
engine torque | 464 lb.-ft. @ 4000 rpm |
engine orientation | longitudinal |
engine oil cooler | 1 |
valve timing | 1 |
cylinder head | Aluminum |
engine block | Aluminum |
vehicle emission | Low Emission Vehicle II |
MPGs
fuel economy city | 15 mpg |
fuel economy highway | 21 mpg |
fuel economy combined | 18 mpg |
fuel tank capacity | 36 gal. |
fuel type | Flex-Fuel Unleaded |
interiors
3rd row head room | 40.1 in. |
3rd row leg room | 36.3 in. |
3rd row shoulder room | 42.8 in. |
cargo capacity all seats in place | 69.5 cu.ft. |
front headroom | 43.03 in. |
front hiproom | 61.18 in. |
front legroom | 44.53 in. |
front shoulder room | 66.02 in. |
interior cargo length to rear seat | 33.8 in. |
cargo capacity all seats folded | 71 cu.ft. |
maximum cargo capacity | 69.5 cu.ft. |
bed length | 82 cu.ft. |
passenger capacity | 6 |
passenger volume | 95.4 cu.ft. |
2nd row headroom | 39.88 in. |
2nd row hiproom | 60.24 in. |
2nd row legroom | 35.24 in. |
2nd row shoulder room | 64.88 in. |
cargo capacity 2nd row seats folded | 71 cu.ft. |
cargo capacity 3rd row seats folded | 33.8 cu.ft. |
exterior dimensions
axle ratio | 3.73 |
cab to axle | 42.1 in. |
curb weight | 6239 lbs. |
front gawr | 4400 lbs. |
front tire/wheel capacity | 2579 lbs. |
front tread | 68.1 in. |
gross weight | 10050 lbs. |
ground clearance | 10.2 in. |
height | 79.95 in. |
length | 240.45 in. |
payload | 3591 lbs. |
pickup bed depth | 82.3 in. |
rear gawr | 6390 lbs. |
rear tire/wheel capacity | 3197 lbs. |
rear tread | 68.3 in. |
turning radius | 24.75 in. |
wheelbase | 149.4 in. |
width | 81.85 in. |
towing
maximum towing capacity | 18200 lbs. |
5th wheel towing capacity | 17050 lbs. |
tow hooks | 2 Front |
trailering class | Class IV |
fixed tow bar | No |
tow hitch | Trailer Hitch |
brake
brake assist | Yes |
brake drying | No |
electronic brakeforce distribution | No |
abs and driveline traction control | 4-Wheel ABS |
abs channels | 4 |
power regeneration | No |
front brake | Integrated Trailer Brake Controller |
rear brake | Integrated Trailer Brake Controller |
rear brake rotor diam x thickness | 13.6 x 0.79 |
front brake rotor diam x thickness | 13 x 1.18 |
transmission
drivetrain | Rear Wheel Drive |
optional transmission | 10-Speed Automatic |
overdrive | Yes |
rear differential | Rear Locking Differential |
standard transmission | 6-Speed Shiftable Automatic |
transmission electronic control | Yes |
transmission oil cooler | Yes |
paddle shifters | No |
warranty
basic warranty | 3 yr. / 36000 mi. |
drivetrain warranty | 5 yr. / 60000 mi. |
roadside assistance | Yes |
roadside warranty | 5 yr. / 60000 mi. |
free maintenance | 1 yr. / Unlimited mi. |
rust warranty | 6 yr. / 100000 mi. |
corrosion perforation warranty | 6 yr. / 100000 mi. |
diesel engine warranty | 5 yr. / 100000 mi. |
Other Years
2023 GMC Sierra 2500HD Double Cab
$22,598 - $61,600
6.6 L0-60: 6.5 - 6.7 sec mpg

2022 GMC Sierra 2500HD Double Cab
$38,800 - $55,300
6.6 L0-60: 6.5 - 7.5 sec mpg

2021 GMC Sierra 2500HD Double Cab
$38,500 - $54,000
6.6 L0-60: 6.3 - 6.5 sec mpg

2019 GMC Sierra 2500HD Double Cab
$38,200 - $50,500
6 L0-60: 7.3 - 8.1 sec18 mpg

2018 GMC Sierra 2500HD Double Cab
$36,920 - $50,900
6 L0-60: 7.3 - 8.3 sec18 mpg