2023 GMC Sierra 3500HD Regular Cab Long Bed DRW 2WD with 6.6L Duramax Turbo Diesel V8, Max Trailering Package and gooseneck hitch
⚠ Pending verification
Figures were extracted from the source below and are pending confirmation against the OEM towing guide.
Source: OEM towing guide — [PDF] 2023 FEATURES, SPECS AND OPTIONS - GMC · retrieved 2026-07-02
Max Towing Capacity
36,000
lbs / 16,329 kg
Hitch Class
Gooseneck / 5th-wheel
Engine Variants
2 variants
Trim Notes
Max gooseneck rating of 36,000 lbs requires 3500 HD Regular Cab long bed DRW 2WD with the available 6.6L Duramax Turbo Diesel V8, Max Trailering Package and gooseneck hitch. Diesel produces 445 hp / 910 lb-ft paired with Allison 10-speed automatic (final drive 3.42).
⚠ Important
Peak 36,000 lb: 6.6L Duramax Turbo Diesel V8, 3500 DRW Regular Cab 2WD Long bed, Max Trailering Package with gooseneck hitch (gooseneck/5th-wheel). Next-highest 32,000 lb: 6.6L Duramax Turbo Diesel V8, 3500 DRW Regular Cab 2WD Long bed, fifth-wheel hitch (conventional peak for same config is 20,000 lbs).
◆ Gear you may need
Always confirm against your door-jamb sticker & OEM towing guide before hauling. Ratings vary by exact configuration.
Different configuration? Look it up
The 36,000 lbs figure above is the properly-equipped maximum for this model year. For a specific trim, engine, or drivetrain, run your exact setup through the live tool:
Prose overview
The 2023 GMC Sierra 3500HD carries a maximum towing capacity of 36,000 lbs when properly equipped, paired with a Gooseneck / 5th-wheel hitch. As with every truck and SUV, the rating swings by engine, drivetrain, cab and bed configuration, and rear axle ratio — so two 2023 GMC Sierra 3500HDs on the same lot can be rated thousands of pounds apart. Match your trailer to the lowestrelevant limit (towing capacity, payload, GCWR, and hitch rating), and verify against the sticker inside the driver's-side door jamb.
Related tow ratings
2023 GMC Sierra 3500HD towing FAQ
What is the maximum towing capacity of a 2023 GMC Sierra 3500HD?
A properly equipped 2023 GMC Sierra 3500HD is rated to tow up to 36,000 lbs. This maximum applies only to specific engine, axle, and tow-package combinations — most trims tow less.
What hitch class does the 2023 GMC Sierra 3500HD need?
Based on its rated capacity, the 2023 GMC Sierra 3500HD typically pairs with a Gooseneck / 5th-wheel hitch. Always match the hitch to your loaded trailer weight and never exceed the vehicle's rated capacity.
Do I need a brake controller to tow with a 2023 GMC Sierra 3500HD?
Most states require trailer brakes — and a brake controller — for trailers over 3,000 lbs loaded. A brake controller syncs the trailer's brakes with the vehicle's for safe, controlled stops.
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