Can a 2026 GMC Sierra 1500 tow a Grady-White 251 CE?
It depends on the engine
We estimate a loaded Grady-White 251 CE on its trailer at about 7,350 lb. 3 of 8 Sierra 1500 engine/package options pass with a 20% margin (for example the 5.3L V8 + Max Trailering Package). 5 are borderline (caution). Payload still needs checking against your door-jamb sticker: tongue weight plus two adults is about 1,035-1,402 lb.
Check your exact setup (add your door-sticker payload and real trailer weight)
Grady-White 251 CE loaded towing weight
| Weight (w/o engines) (Grady-White) | 4,050 lb |
| Engine: Yamaha 4.3L V6 F350 (heaviest listed variant), the heaviest Yamaha that covers the boat's 350 HP max | 653 lb |
| Fuel: 78 gal x 6.1 lb/gal (full tank) | 476 lb |
| Gear allowance: 10% (batteries, anchor, coolers, safety gear, T-top/options) | 518 lb |
| Trailer: ESTIMATE, 35% of boat + engine (no trailer weight published) | 1,650 lb |
| Estimated loaded trailer weight | 7,350 lb |
2026 GMC Sierra 1500 towing ratings vs this boat
| Engine / package | Published rating (lb) | Tow | Payload | Result |
|---|---|---|---|---|
| 2.7L TurboMax | 8,800–9,400 | CAUTION | CHECK | CAUTION |
| 5.3L V8 | 9,100–9,800 | CAUTION | CHECK | CAUTION |
| 5.3L V8 + Max Trailering Package | 10,800–11,200 | PASS | CHECK | PASS |
| 6.2L V8 (not AT4X) | 8,900–9,000 | CAUTION | CHECK | CAUTION |
| 6.2L V8 + Max Trailering Package | 11,700–13,100 | PASS | CHECK | PASS |
| 3.0L Duramax diesel (not AT4X) | 8,700–9,300 | CAUTION | CHECK | CAUTION |
| 3.0L Duramax + Max Trailering Package | 11,600–13,300 | PASS | CHECK | PASS |
| AT4X (6.2L V8 or 3.0L Duramax) | 8,500–8,700 | CAUTION | CHECK | CAUTION |
"Published rating" is the lowest–highest conventional (ball-hitch) rating GMC prints for that engine/package across cab, bed, drive and axle choices. PASS means the loaded trailer is at or under 80% of the lowest rating. GMC: ratings require a properly equipped vehicle; passengers, cargo and options reduce what you can tow.
Tongue weight vs payload
Tongue weight should be 10–15% of the loaded trailer: about 735–1,102 lb. That comes out of your truck's payload along with everyone in the cab, so with two adults (300 lb) you need roughly 1,035–1,402 lb of payload before any cargo in the bed.
2.7L TurboMax CAUTION
CAUTION 7,350 lb is within the 8,800 lb rating but uses 84% of it, which leaves less than our 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
5.3L V8 CAUTION
CAUTION 7,350 lb is within the 9,100 lb rating but uses 81% of it, which leaves less than our 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
Some ratings need the MI2 10-speed or MT tires.
5.3L V8 + Max Trailering Package PASS
PASS 7,350 lb is 68% of the lowest published rating (10,800 lb), inside a 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
6.2L V8 (not AT4X) CAUTION
CAUTION 7,350 lb is within the 8,900 lb rating but uses 83% of it, which leaves less than our 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
6.2L V8 + Max Trailering Package PASS
PASS 7,350 lb is 63% of the lowest published rating (11,700 lb), inside a 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
13,000-13,100 lb needs 20-in wheels.
3.0L Duramax diesel (not AT4X) CAUTION
CAUTION 7,350 lb is within the 8,700 lb rating but uses 84% of it, which leaves less than our 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
3.0L Duramax + Max Trailering Package PASS
PASS 7,350 lb is 63% of the lowest published rating (11,600 lb), inside a 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
12,400-13,300 lb needs 20-in wheels.
AT4X (6.2L V8 or 3.0L Duramax) CAUTION
CAUTION 7,350 lb is within the 8,500 lb rating but uses 86% of it, which leaves less than our 20% safety margin.
CHECK Payload isn't published in the maker's towing chart for this truck. Use the payload on your door-jamb sticker.
Confirm with your door-jamb sticker and owner's manual. Your exact truck's rating depends on cab, bed, drive, axle ratio, options and tires, and your boat's real weight depends on its engine, options, fuel and gear. When in doubt, weigh the rig at a CAT scale.
Gear you may need
Placeholder links (not affiliate links yet). Disclosure.
Trailer brake controller
Boat trailers over about 3,000 lb usually need working trailer brakes (check your state's law); an electric-over-hydraulic or electric setup needs a controller in the truck.
Class IV receiver hitch & ball mount
Match the ball mount drop to your trailer so the boat rides level; the hitch rating must cover the full loaded trailer.
Tongue weight scale
The only way to know your real tongue weight (10-15% of the loaded trailer) before it eats your payload.
Sources
- 2026 GMC Sierra 1500: GMC 2026 Sierra 1500 Max Conventional Trailering chart, checked 2026-10-29
- Grady-White 251 CE: Grady-White model page (Weight (w/o engines), fuel capacity, max HP), checked 2026-10-29
- Engine weight: Yamaha Outboards spec page (Yamaha 4.3L V6 F350 (heaviest listed variant), 653 lb)
- Method and assumptions: How we calculate
Related checks
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