2020 GMC Sierra AT4 HD | Heavy-Duty Pickup Truck | GMC Canada

FIRST EVER SIERRA HD
AT4

FIRST EVER SIERRA HD AT4

AVAILABLE MAX TOWING UP TO

AVAILABLE MAX TOWING UP TO

9662 KG (21,300 LB.)

9662 KG (21,300 LB.)


AVAILABLE MAX PAYLOAD UP TO

AVAILABLE MAX PAYLOAD UP TO

1995 KG (4398 LB.)

1995 KG (4398 LB.)


AVAILABLE MAX TORQUE UP TO

AVAILABLE MAX TORQUE UP TO

910 LB.-FT.

910 LB.-FT.


STARTING AT

STARTING AT

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2500HD VS 3500HD

SIERRA 2500 AT4

  • Maximum conventional trailering capacity of up to 8391 KG (18,500 LB.)
  • Maximum fifth-wheel/gooseneck rating of up to 8391 KG (18,500 LB.)
  • Maximum payload of up to 1752 KG (3862 LB.) (late availability)

SIERRA 3500 AT4

  • Maximum conventional trailering capacity of up to 9072 KG (20,000 LB.)
  • Maximum fifth-wheel/gooseneck rating of up to  9662 KG (21,300 LB.)
  • Maximum payload of 1995 KG (4398 LB.) (Long Box model late availability)

SPEC HIGHLIGHTS

SIERRA 2500 AT4

Next Generation Sierra 2500 AT4 truck comes in Crew Cab models with a 6' 9" standard box or available 8' long box (late availability).

MAX GCWR

12,474 KG (27,500 LB.)

MAX GVWR

5239 KG (11,550 LB.)

WHEEL BASE

4036 – 4369 mm (158.9 – 172 in.)

GROUND CLEARANCE

256.5 mm (10.1 in.)

FRONT/REAR TREAD WIDTH

1730/1735 mm (68.1/68.3 in.)

MAX CARGO VOLUME

1971 L – 2364 L (69.6 cu. ft. – 83.5 cu. ft.)

VIEW DETAILED SPECS
SIERRA 3500 AT4

Next Generation Sierra 3500 AT4 truck comes in Crew Cab with either a 6' 9" standard box or available 8' long box (late availability). Long box is available with a SRW or DRW configuration.

MAX GCWR

13,472 KG (29,700 LB.)

MAX GVWR

6350 KG (12,250 LB.)

WHEEL BASE

4036 – 4369 mm (158.9 – 172 in.)

GROUND CLEARANCE

256.5 mm (10.1 in.)

FRONT/REAR TREAD WIDTH

1730/1735 mm (68.1/68.3 in.)

MAX CARGO VOLUME

1971 L – 2364 L (69.6 cu. ft. – 83.5 cu. ft.)

VIEW DETAILED SPECS
VIEW DETAILED SPECS

2500 AT4 DETAILED SPECS

2500 DIESEL TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX
 

4WD CREW CAB LONG BOX (LATE AVAILABILITY)

MAX GCWR

12,474 KG (27,500 LB.)

12,474 KG (27,500 LB.)

MAX CONVENTIONAL HITCH

8391 KG (18,500 LB.)

8391 KG (18,500 LB.)

MAX FIFTH WHEEL HITCH

8391 KG (18,500 LB.)

8391 KG (18,500 LB.)

MAX GOOSENECK HITCH

8391 KG (18,500 LB.)

18,500 LB. (8391 KG)

MAX PAYLOAD

3563 LB. (1616 KG)

1632 KG (3597 LB.)

2500 GAS TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX
 

4WD CREW CAB LONG BOX (LATE AVAILABILITY)

MAX GCWR

10,886 KG (24,000 LB.)

10,886 KG (24,000 LB.)

MAX CONVENTIONAL HITCH

6577 KG (14,500 LB.)

6577 KG (14,500 LB.)

MAX FIFTH WHEEL HITCH

7575 KG (16,700 LB.)

7530 KG (16,600 LB.)

MAX GOOSENECK HITCH

7575 KG (16,700 LB.)

7530 KG (16,600 LB.)

MAX PAYLOAD

1706 KG (3760 LB.)

1752 KG (3862 LB.)

2500 ENGINES

6.6 L V8 GASOLINE

6.6 L V8 TURBO DIESEL

CYLINDER HEAD MATERIAL

Cast Aluminum

Cast Aluminum

COMPRESSION RATIO

10.75 : 1

16 : 1

VALVETRAIN

Overhead-valve, two valves per cylinder, variable valve trimming

Overhead-valve, four valves per cylinder

FUEL DELIVERY

Direct Fuel Injection

Common-Rail Direct Fuel Injection

HORSEPOWER (hp @rpm)

401 @5200

445 @2800

TORQUE (lb.-ft. @rpm)

464 @4000

910 @1600

2500 TRANSMISSIONS & AXLES

HYDRA-MATIC 6L90 SIX-SPEED AUTOMATIC TRANSMISSION (6.6L GAS)

ALLISON®† 10-SPEED AUTOMATIC TRANSMISSION (6.6L DIESEL)

GEAR RATIOS (:1)

6L90

10L1000

FIRST GEAR

4.03

4.54

SECOND GEAR

2.36

2.87

THIRD GEAR

1.53

2.06

FOURTH GEAR

1.15

1.72

FIFTH GEAR

0.85

1.48

SIXTH GEAR

0.67

1.26

SEVENTH GEAR

1.00

EIGHTH GEAR

0.85

NINTH GEAR

0.69

TENTH

0.63

REVERSE

3.06

4.54

AXLE RATIO

3.73

3.42

REAR AXLE RING GEAR SIZE

11.5 in.

11.5 in.

2500 DIMENSIONS

4WD CREW CAB STANDARD BOX

4WD CREW CAB LONG BOX (LATE AVAILABILITY)

WHEELBASE

4036 mm (158.9 in.)

4369 mm (172 in.)

OVERALL LENGTH

6353 mm (250.1 in.)

6759 mm (266.1 in.)

OVERALL WIDTH

2080 mm (81.9 in.)

2080 mm (81.9 in.)

OVERALL HEIGHT

2027 mm (79.8 in.)

2024 mm (79.7 in.)

CARGO BED INSIDE LENGTH (AT FLOOR)

2088 mm (82.2 in.)

2438 mm (96 in.)

INSIDE HIGHT (BOX)

610 mm (21 in.)

610 mm (21 in.)

INSIDE WIDTH (BETWEEN WHEELHOUSING)

1318 mm (51.9 in.)

1285 mm (50.6 in.)

WALL TO WALL

1814 mm (71.4 in.)

1814 mm (71.4 in.)

CARGO BOX VOLUME

1971 L (69.6 cu.ft.) 

2364 L (83.5 cu.ft)

3500 AT4 DETAILED SPECS

3500 DIESEL TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX

4WD CREW CAB LONG BOX SRW (LATE AVAILABILITY)

MAX GCWR

13,472 KG (29,700 LB.)

13,472 KG (29,700 LB.)

MAX CONVENTIONAL HITCH

9072 KG (20,000 LB.)

9072 KG (20,000 LB.)

MAX FIFTH WHEEL HITCH

9662 KG (21,300 LB.)

9525 KG (21,000 LB.)

MAX GOOSENECK HITCH

9662 KG (21,300 LB.)

9525 KG (21,000 LB.)

MAX PAYLOAD

1898 KG (4185 LB.)

1850 KG (4078 LB.)

3500 GAS TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX

4WD CREW CAB LONG BOX SRW (LATE AVAILABILITY)

MAX GCWR

10,886 KG (24,000 LB.)

10,886 KG (24,000 LB.)

MAX CONVENTIONAL HITCH

6577 KG (14,500 LB.)

6577 KG (14,500 LB.)

MAX FIFTH WHEEL HITCH

7484 KG (16,500 LB.)

7439 KG (16,400 LB.)

MAX GOOSENECK HITCH

7484 KG (16,500 LB.)

7439 KG (16,400 LB.)

MAX PAYLOAD

1980 KG (4365 LB.)

1995 KG (4398 LB.)

3500 ENGINES

6.6 L V8 GASOLINE

6.6 L V8 TURBO DIESEL

CYLINDER HEAD MATERIAL

Cast Aluminum

Cast Aluminum

COMPRESSION RATIO

10.75 : 1

16 : 1

VALVETRAIN

Overhead-valve, two valves per cylinder, variable valve trimming

Overhead-valve, four valves per cylinder

FUEL DELIVERY

Direct Fuel Injection

Common-Rail Direct Fuel Injection

HORSEPOWER (hp @rpm)

401 @5200

445 @2800

TORQUE (lb.-ft. @rpm)

464 @4000

910 @1600

3500 TRANSMISSIONS & AXLES

HYDRA-MATIC 6L90 SIX-SPEED AUTOMATIC TRANSMISSION (6.6L GAS)

ALLISON®† 10-SPEED AUTOMATIC TRANSMISSION (6.6L DIESEL)

GEAR RATIOS (:1)

6L90

10L1000

FIRST GEAR

4.03

4.54

SECOND GEAR

2.36

2.87

THIRD GEAR

1.53

2.06

FOURTH GEAR

1.15

1.72

FIFTH GEAR

0.85

1.48

SIXTH GEAR

0.67

1.26

1.26

SEVENTH GEAR

1.00

EIGHTH GEAR

0.85

NINTH GEAR

0.69

TENTH

0.63

REVERSE

3.06

4.54

AXLE RATIO

3.73

3.42

REAR AXLE RING GEAR SIZE

11.5 in.

12 in.

3500 DIMENSIONS

4WD CREW CAB STANDARD BOX

SRW CREW CAB LONG BOX 4WD (late availability)

WHEELBASE

4036 mm (158.9 in.)

4369 mm (172 in.)

OVERALL LENGTH

6353 mm (250.1 in.)

6759 mm (266.1 in.)

OVERALL WIDTH

2080 mm (81.9 in.)

2080 mm (81.9 in.)

OVERALL HEIGHT

2055 mm (80.9 in.)

2050 mm (80.7 in.)

CARGO BED INSIDE LENGTH (AT FLOOR)

2088 mm (82.2 in.)

2438 mm (96 in.)

INSIDE HIGHT (BOX)

610 mm (21 in.)

610 mm (21 in.)

INSIDE WIDTH (BETWEEN WHEELHOUSING)

1318 mm (51.9 in.)

1285 mm (50.6 in.)

WALL TO WALL

1814 mm (71.4 in.)

1814 mm (71.4 in.)

CARGO BOX VOLUME

1971 L (69.6 cu.ft.)

2364 L (83.5 cu.ft)

COLOURS

FEATURE HIGHLIGHTS

OFF-ROAD WITHOUT COMPROMISE

Built to power you and your trailer off-road, the Sierra HD AT4 tows up to 21,300 LB. (9662 KG)
 

Built to power you and your trailer off-road, the Sierra HD AT4 tows up to 21,300 LB. (9662 KG)

MORE CAPABILITY FEATURES

U.S. MODEL SHOWN

INNOVATIVE TECHNOLOGY

Driver-centric technology such as the available multi-colour 15" diagonal Head-Up Display with Off-Road Inclinometer, helps you stay connected and in control.

MORE CONNECTIVITY FEATURES

DISTINCTIVE BOLD EXTERIOR

Exclusive finishes and modern details highlight the rugged exterior that features best-in class heavy-duty Cargo Bed Volume.

MORE EXTERIOR FEATURES

U.S. MODEL SHOWN

EXCLUSIVE ADVANCED INTERIOR

The comfortable cabin features durable seating in Jet Black with Kalahari accents and advanced technology to help with off-roading.

MORE INTERIOR FEATURES

GALLERY

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NEXT STEPS

  • Requires properly equipped 3500 Crew Cab SRW Standard Box 4WD model with available 6.6L Duramax Turbo Diesel and fifth wheel or gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 2500 Crew Cab SRW Long Box 4WD model with 6.6L gas V8 engine (late availability). These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Requires Crew Cab short box with 5.3L V-8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires Crew Cab with available 6.2L V-8 and Max Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Manufacturer's Suggested Retail Price, includes freight and $100 air conditioning tax if applicable. License, insurance, registration, fees associated with filing at movable property registry/PPSA, administration fees, duties and taxes extra. Dealers are free to set individual prices. See dealer for details. U.S. model shown. Image may not show the configurable options selected or available on the vehicle. Some colour options are available at extra cost and may only be available on select trims.

  • Manufacturer's Suggested Retail Price, does not include freight, air conditioning charge and Tire fee if applicable. License, insurance, registration, fees associated with filing at movable property registry/PPSA, administration fees, duties and taxes extra. Dealers are free to set individual prices. See dealer for details. U.S. model shown. Image may not show the configurable options selected or available on the vehicle. Some colour options are available at extra cost and may only be available on select trims. On Locate a Vehicle shopping tool, Manufacturer's Suggested Retail Price includes freight, $100 air conditioning tax and Tire fee if applicable. License, insurance, registration, fees associated with filing at movable property registry/PPSA, administration fees, duties and taxes extra. Dealers are free to set individual prices. See dealer for details. U.S. model shown. Image may not show the configurable options selected or available on the vehicle. Some colour options are available at extra cost and may only be available on select trims.

  • Requires properly equipped 2500 Crew Cab SRW model with available 6.6L Duramax Turbo Diesel engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Crew Cab model with available 6.6L Duramax Turbo Diesel engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Crew Cab SRW Standard Box 4WD model with available 6.6L Duramax Turbo Diesel and fifth wheel or gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Crew Cab SRW Long Box 4WD model with 6.6L gas V8 engine (late availability). These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • When properly equipped, includes weight of vehicle and trailer combination, including the weight of driver, passengers, fuel, optional equipment and cargo in the vehicle and trailer.

  • When properly equipped, includes weight of vehicle, passengers, cargo and equipment.

  • Cargo and load capacity limited by weight and distribution.

  • Gross Combination Weight Rating (GCWR). When properly equipped; includes weight of vehicle and trailer combination, including the weight of driver, passengers, fuel, optional equipment and cargo in the vehicle and trailer.

  • Requires properly equipped vehicle. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • For comparison purposes only.  See the Owner’s Manual and the label on the vehicle door jamb for the carrying capacity of a specific vehicle.

  • Allison is a registered trademark of Allison Transmission, Inc.

  • Requires properly equipped 3500 Crew Cab SRW Standard Box 4WD model with available 6.6L Duramax Turbo Diesel and fifth wheel or gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Comparison based on wardsauto.com 2019 Large Pickup segment and latest competitive information available at the time of posting. Excludes other GM vehicles.

  • Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual.  The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

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