2024 GMC Sierra 2500HD Towing Capacity & Payload Guide

The 2024 GMC Sierra 2500HD can tow up to an impressive 22,500 pounds when properly equipped with the 6.6L Duramax Turbo-Diesel engine, regular cab, 2WD, and a 5th-wheel/gooseneck hitch setup. For conventional hitch towing, the 2024 Sierra 2500HD maxes out at 20,000 pounds. As a heavy-duty workhorse, all of its ratings are compliant with the SAE J2807 towing standards, meaning you can trust these numbers under real-world, stressful conditions.

Quick answer

Here are the maximum capabilities for the 2024 GMC Sierra 2500HD. Keep in mind that these represent the absolute maximums across the lineup; your specific truck's capabilities will depend on its configuration.

• Max Tow Capacity: 22,500 lbs (5th-wheel/gooseneck) / 20,000 lbs (conventional)
• Max Payload: 3,850 lbs (6.6L Gas V8, Regular Cab, 2WD)
• GVWR (Gross Vehicle Weight Rating): 10,000 to 11,500 lbs
• GCWR (Gross Combined Weight Rating): Up to 30,000 lbs (with Duramax diesel)
• Curb Weight: 6,400 to 8,100 lbs (varies heavily by cab, bed, engine, and 4WD)
• Hitch Class: Class V (2.5-inch receiver) standard

Always verify your truck's specific ratings by checking the tire and loading information sticker located on the driver's side door jamb.

Tow ratings by engine & trim

The 2024 GMC Sierra 2500HD features two engine options: the standard 6.6L Gas V8 (now paired with an Allison 10-speed automatic transmission) and the upgraded 6.6L Duramax Turbo-Diesel V8. The table below outlines maximum conventional tow ratings and payload limits based on general configurations.

Note: Diesel models generally offer higher towing capacities but lower payload capacities compared to gas models due to the heavy weight of the diesel engine.

Tow package contents

To reach the higher towing figures, GMC outfits the Sierra 2500HD with heavy-duty trailering equipment from the factory. Standard and available trailering features include:

• Heavy-Duty Cooling: Upgraded engine oil and transmission fluid coolers to manage heat under heavy load.
• Integrated Trailer Brake Controller: Allows the driver to adjust the trailer brake gain directly from the dashboard.
• Trailer Sway Control & StabiliTrak: Uses the truck's brakes to automatically help stabilize the trailer if swaying is detected.
• ProGrade Trailering System: Includes features like Hitch Guidance with Hitch View, a pre-departure checklist, and trailer tire pressure monitoring.
• 7-Pin and 4-Pin Connectors: Standard wiring provisions mounted directly on the rear bumper.
• Transparent Trailer View: An optional multi-camera system that virtually "sees through" your trailer on the infotainment screen.

5th-wheel & gooseneck

Because the Sierra 2500HD is a heavy-duty truck, it is fully capable of handling 5th-wheel and gooseneck trailers. GMC offers a factory-installed 5th-Wheel/Gooseneck Prep Package that includes a hitch platform to accept a gooseneck ball or fifth-wheel hitch, as well as a bed-mounted 7-pin trailer harness.

When utilizing a 5th-wheel or gooseneck setup, the maximum towing capacity jumps to 22,500 lbs (on 2WD Regular Cab Duramax models). Crew cab diesel models top out around 21,600 lbs for 5th-wheel towing, while gas V8 models max out at 18,700 lbs. Always monitor your pin weight, as it can easily exceed the rear axle weight rating or the total payload capacity of the truck, especially in loaded Denali Ultimate trims.

Weight distribution & WDH requirements

While standard half-ton trucks often require a Weight Distribution Hitch (WDH) for trailers over 5,000 pounds, the heavy-duty suspension on the Sierra 2500HD allows for much heavier dead-weight (weight-carrying) towing.

GMC generally permits conventional towing up to 20,000 pounds (with the Class V hitch) without strictly requiring a WDH on the 2024 2500HD, though utilizing one is heavily recommended for trailers exceeding 10,000 lbs to improve steering response, braking, and overall stability. Always check the hitch receiver's stamped rating to ensure you do not exceed the dead-weight limit.

Real-world towing tips for this vehicle

• Exhaust Braking: If you have the Duramax engine, use the diesel exhaust brake. It significantly reduces brake wear and increases control on long downhill grades.
• Tow/Haul Mode: Always engage Tow/Haul mode when towing heavy loads. It alters transmission shift points to keep the engine in its optimal power band and engages grade braking.
• Check the Sticker: Never rely purely on online charts. The driver's side door sticker gives you the exact payload and GVWR for your specific VIN. Subtract passenger and cargo weight from the payload to find your true available tongue or pin weight.
• Tire Pressure: Ensure your heavy-duty E-rated tires are inflated to the recommended cold pressure for towing, which is usually higher than the unloaded pressure.

Common towing-related issues

• Payload Limitations on High Trims: Buyers of the Denali and Denali Ultimate often expect the highest towing and payload numbers. However, the heavy luxury features and heavy diesel engine eat into the GVWR, resulting in much lower available payload for 5th-wheel pin weight.
• DEF Consumption: When towing heavy with the Duramax diesel, Diesel Exhaust Fluid (DEF) consumption will increase significantly. Keep extra DEF on hand during long trips.
• Transmission Temps: While the Allison 10-speed is robust, frequent towing up steep grades in hot weather can elevate transmission temps. Watch your gauges and pull over if temperatures climb near the red zone.

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