model details

FIRST EVER SIERRA HD AT4

AS SHOWN: $73,475

FIRST EVER SIERRA HD AT4

AS SHOWN: $73,475

TOW UP TO

TOW UP TO

21,300 LBS

21,300 LBS


MAX PAYLOAD UP TO

MAX PAYLOAD UP TO

4,398 LBS

4,398 LBS


MAX TORQUE UP TO

MAX TORQUE UP TO

910 LB-FT

910 LB-FT


STARTING AT

STARTING AT

$57,700

$57,700

2500 VS 3500

2500 HD AT4

  • Maximum conventional trailering capacity of up to 18,500 lbs
  • Maximum fifth-wheel/gooseneck rating of up to 18,500 lbs
  • Maximum payload of up to 3,862 lbs

3500 HD AT4

  • Maximum conventional trailering capacity of up to 20,000 lbs
  • Maximum fifth-wheel/gooseneck rating of up to 21,300 lbs
  • Maximum payload of up to 4,398 lbs  

ADVENTURE POWERFULLY

SPEC HIGHLIGHTS

2500 HD AT4

The First Ever Sierra 2500 AT4 truck comes in a 4WD Crew Cab with a 6' 9" standard box or available 8' long box.

MAX GCWR

27,500 LBS

MAX GVWR

11,550 LBS

WHEELBASE

158.9-172 IN.

GROUND CLEARANCE

10.1 IN.

FRONT/REAR TREAD WIDTH

68.1/68.3 IN.

CARGO VOLUME

69.6-83.5 CU.FT.

3500 HD AT4

The First Ever Sierra 3500 AT4 truck comes in a 4WD Crew Cab with a 6' 9" standard box or available 8' long box. SRW only.

MAX GCWR

29,700 LBS

MAX GVWR

12,250 LBS

WHEELBASE

158.9-172 IN.

GROUND CLEARANCE

10.4-11.2 IN.

FRONT/REAR TREAD WIDTH

68.1/68.3 IN.

CARGO VOLUME

69.6-83.5 CU.FT.

2500 HD AT4 DETAILED SPECS

2500 DIESEL TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX

4WD CREW CAB LONG BOX

MAX GCWR

27,500 LBS

27,500 LBS

MAX CONVENTIONAL HITCH

18,500 LBS

18,500 LBS

MAX FIFTH WHEEL HITCH

18,500 LBS

18,500 LBS

MAX GOOSENECK HITCH

18,500 LBS

18,500 LBS

MAX PAYLOAD

3,563 LBS

3,597 LBS

2500 GAS TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX

4WD CREW CAB LONG BOX

MAX GCWR

24,000 LBS

24,000 LBS

MAX CONVENTIONAL HITCH

14,500 LBS

14,500 LBS

MAX FIFTH WHEEL HITCH

16,620 LBS

16,520 LBS

MAX GOOSENECK HITCH

16,620 LBS

16,520 LBS

MAX PAYLOAD

3,760 LBS

3,862 LBS

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

WHEELBASE

158.9"

172"

OVERALL LENGTH

250.1"

266.1"

OVERALL WIDTH

81.9"

81.9"

OVERALL HEIGHT

79.8"

79.7"

CARGO BED INSIDE LENGTH (AT FLOOR)

82.2"

98.2"

INSIDE HEIGHT (BOX)

21"

21"

INSIDE WIDTH (BETWEEN WHEELHOUSING)

51.9"

50.6"

WALL TO WALL

71.4"

71.4"

CARGO BOX VOLUME

69.6 cu.ft

83.5 cu.ft

3500 HD AT4 DETAILED SPECS

3500 DIESEL TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX

4WD CREW CAB LONG BOX SRW

MAX GCWR

29,700 LBS

29,700 LBS

MAX CONVENTIONAL HITCH

20,000 LBS

20,000 LBS

MAX FIFTH WHEEL HITCH

21,300 LBS

21,040 LBS

MAX GOOSENECK HITCH

21,300 LBS

21,040 LBS

MAX PAYLOAD

4,185 LBS

4,078 LBS

3500 GAS TOWING & PAYLOAD

4WD CREW CAB STANDARD BOX

4WD CREW CAB LONG BOX SRW

MAX GCWR

24,000 LBS

24,000 LBS

MAX CONVENTIONAL HITCH

14,500 LBS

14,500 LBS

MAX FIFTH WHEEL HITCH

16,530 LBS

16,410 LBS

MAX GOOSENECK HITCH

16,530 LBS

16,410 LBS

MAX PAYLOAD

4,365 LBS

4,398 LBS

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

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

WHEELBASE

158.9"

172"

OVERALL LENGTH

250.1"

266.1"

OVERALL WIDTH

81.9"

81.9"

OVERALL HEIGHT

80.9"

80.7"

CARGO BED INSIDE LENGTH (AT FLOOR)

82.2"

98.2”

INSIDE HEIGHT (BOX)

21"

21"

INSIDE WIDTH (BETWEEN WHEELHOUSING)

51.9"

50.6"

WALL TO WALL

71.4"

71.4"

CARGO BOX VOLUME

69.6 cu.ft

83.5 cu.ft

COLORS

FEATURE HIGHLIGHTS

OFF-ROAD WITHOUT COMPROMISE

Built to power you and your trailer off-road, the Sierra HD AT4 tows up to 21,300 lbs.

MORE CAPABILITY FEATURES

INNOVATIVE TECHNOLOGY

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

MORE TECHNOLOGY 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

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

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NEXT STEPS

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges.

  • 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.

  • 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.

  • Requires available Duramax 6.6L Turbo-Diesel V8 engine.

  • Requires 5.3L V-8 engine. EPA est. 15 city/20 hwy mpg (4WD).

  • The 18,500 lbs. rating requires properly equipped 2500 Crew Cab 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 2WD or 4WD Crew Cab DRW equipped with available 6.6L Duramax Diesel engine. Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.

  • 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 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.

  • 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.

  • Maximum Gross Vehicle Weight Rating (GVWR). When properly equipped; includes weight of vehicle, passengers, cargo and equipment.

  • Cargo and load capacity limited by weight and distribution.

  • 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.

  • 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.

  • Excludes other GM vehicles.

  • Canyon’s 7700-lb rating requires 2WD Crew Cab model with available Duramax 2.8L I-4 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 4WD Double Cab with available 6.2L V8 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.

  • Requires 2WD Crew Cab DRW equipped with 6.6L Duramax Diesel and fifth-wheel or gooseneck hitch. Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.

  • Requires properly equipped 3500 Regular Cab DRW Long Box 2WD model with available 6.6L Duramax Turbo Diesel engine and 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.

  • 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 2WD Denali Short Box model 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.

  • Savana Passenger's 9,600-lb rating requires a 2500 or 3500 Regular wheelbase model with available 6.0L V8 engine and trailering equipment 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.

  • Savana Cargo’s 10,000-lb rating requires  the available 6.0L V8 engine and trailering equipment 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.

  • Savana Cutaway’s 9,006-lb rating requires a 4500 Series 159" Wheelbase model with available 6.0L V8 engine. 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.

  • Canyon’s 7000-lb rating requires available trailering package and 3.6L V-6 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.

  • Sierra's 12,500-lb rating requires Sierra Double Cab or Crew Cab Short box 2wd with 6.2L EcoTec3 V8 engine and NHT 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.

  • Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.

  • Sierra Denali's 9,300-lb rating requires 2wd. 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.

  • Savana Passenger's 10,000-lb rating requires 2500 Wheel Base with 6.0L V8 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.

  • Savana Cargo's 10,000-lb rating requires 6.0L V8 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.

  • 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.

  • Gross Combination Weight Rating (GCWR). When properly equipped, includes weight of vehicle, passengers, cargo and equipment.

  • Requires properly equipped 3500 Regular Cab DRW Long Box 2WD model with available 6.6L Duramax Turbo Diesel engine and gooseneck hitch (late availability). 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.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges. Bed/Roof-Mounted Bicycle Carriers shown. Requires crossbars or Thule Rack Solution. Non-GM warranty. Warranty by Thule®. See dealer for more information.

  • Available. Requires 2.0L Turbocharged gas engine.

  • Terrain's 3,500-lb rating requires available 2.0L Turbocharged gas engine and available trailering equipment. 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 available 3.6L V6 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.

  • Yukon’s 8,500-lb rating requires short wheelbase 2wd with 5.3L EcoTec3 V8 engine and HD 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.

  • Requires 2WD Denali Short Box model 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.

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