CAPABILITY Show
Due to current supply-chain shortages, certain features shown have limited or late availability, or are no longer available. See the window label or a dealer regarding the features on an individual vehicle. ENGINEERED TO PERFORMThe 2023 Sierra Heavy Duty pickup truck offers up to 36,000 lbs.† of available max towing. It’s built strong so you can tow strong. The large drive shaft and rear axle will give you exceptional durability and strength, and its powerful brakes and steering offer superior control. SEE WHAT'S UNDER THE HOOD
DIESEL TECHNOLOGYEfficient, responsive and powerful — get familiar with Sierra Heavy Duty’s available Duramax® Turbo-Diesel engine capabilities. AVAILABLE 6.6L DURAMAX TURBO-DIESEL V8 ENGINE CAPABILITY WITHOUT COMPROMISE
While the 2023 Sierra Heavy Duty offers powertrain advancements across the lineup, the legendary available Duramax Diesel engine and 10-Speed Allison Automatic Transmission continue to offer the in pulling power excellence:
OPTIMIZED ENGINE PERFORMANCE
Engineers worked to make this already powerful engine perform more efficiently by optimizing its cooling capacity by way of a large radiator and fan and improving the air induction system.
ADVANCED ENGINES & TRANSMISSIONS2500 ENGINESOverhead-valve, two valves per cylinder, variable valve trimming Overhead-valve, four valves per cylinder Common-Rail Direct Fuel Injection 2500 TRANSMISSIONS & AXLES6L90 SIX-SPEED AUTOMATIC TRANSMISSION (6.6L GAS) ALLISON 10-SPEED AUTOMATIC TRANSMISSION (6.6L DIESEL) 3500 ENGINESOverhead-valve, two valves per cylinder, variable valve trimming Overhead-valve, four valves per cylinder Common-Rail Direct Fuel Injection 3500 TRANSMISSIONS & AXLES6L90 SIX-SPEED AUTOMATIC TRANSMISSION (6.6L GAS) ALLISON 10-SPEED AUTOMATIC TRANSMISSION (6.6L DIESEL) TOWING AND PAYLOAD TABLES2500 DIESEL TOWING & PAYLOAD4WD CREW CAB STANDARD BOX 2500 GAS TOWING & PAYLOAD4WD CREW CAB STANDARD BOX 3500 DIESEL TOWING & PAYLOAD4WD CREW CAB STANDARD BOX 4WD CREW CAB LONG BOX SRW 4WD CREW CAB LONG BOX DRW 3500 GAS TOWING & PAYLOAD4WD CREW CAB STANDARD BOX SRW CREW CAB LONG BOX 4WD DENALI DRW CREW CAB LONG BOX 4WD AT4 & DENALI’S HEAVY DUTY CAPABILITY RESPONSIVE SUSPENSIONS
STAY COOL UNDER PRESSURE
STOPPING & GOING POWERAVAILABLE AUTO ELECTRIC PARKING BRAKE
PARK GRADE HOLD ASSIST
AVAILABLE DIGITAL VARIABLE STEERING ASSIST
AVAILABLE 2-SPEED AUTOTRAC TRANSFER CASE
AVAILABLE TRACTION SELECT SYSTEM WITH TOW/HAUL MODE AND OFF-ROAD MODE
ADVENTUROUS PACKAGESX31 OFF-ROAD PACKAGE
GOOSENECK/5TH WHEEL HITCH PACKAGE
Due to current supply-chain shortages, certain features shown have limited or late availability, or are no longer available. See the window label or a dealer regarding the features on an individual vehicle. NEXT STEPSHow much can a GMC AT4 Duramax tow?HD AT4. AS SHOWN: MAX PAYLOAD 3,514 lbs. AS SHOWN: AVAILABLE MAX TOWING 14,500 lbs.
What is the towing capacity of a 2500 GMC Duramax diesel?The maximum 2022 GMC Sierra 2500 towing capacity is 18,500 pounds for both conventional and 5th wheel towing*.
What is the AT4 package on a 2500HD?2021 GMC Sierra 2500HD AT4 Safety
Bundled in with the AT4 Premium Package are advanced safety features such as front and rear park assist, lane change alert, lane departure warning, rear cross traffic alert, forward collision alert, automatic emergency braking and automatic high beams.
How much can the GMC turbo diesel tow?The 2022 GMC Sierra 1500 maximum towing capacity reaches 13,000 pounds. Granted, to reach those numbers, you must equip the available 3.0L Duramax Turbo Diesel engine, choose the Double Cab 4WD model, and add on the Max Trailering Package and 20-inch wheels.
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