Can a 2026 GMC Sierra 1500 tow a Key West 219 FS?
Yes
We estimate a loaded Key West 219 FS on its trailer at about 4,660 lb. 8 of 8 Sierra 1500 engine/package options pass with a 20% margin (for example the 2.7L TurboMax). Payload still needs checking against your door-jamb sticker: tongue weight plus two adults is about 766-999 lb.
Check your exact setup (add your door-sticker payload and real trailer weight)
Key West 219 FS loaded towing weight
| Weight (Key West) | 2,250 lb |
| Engine: Yamaha 4.2L V6 F225-F300 (heaviest listed variant), the heaviest Yamaha that covers the boat's 250 HP max | 588 lb |
| Fuel: 80 gal x 6.1 lb/gal (full tank) | 488 lb |
| Gear allowance: 10% (batteries, anchor, coolers, safety gear, T-top/options) | 333 lb |
| Trailer: ESTIMATE, 35% of boat + engine (no trailer weight published) | 1,000 lb |
| Estimated loaded trailer weight | 4,660 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 | PASS | CHECK | PASS |
| 5.3L V8 | 9,100–9,800 | PASS | CHECK | PASS |
| 5.3L V8 + Max Trailering Package | 10,800–11,200 | PASS | CHECK | PASS |
| 6.2L V8 (not AT4X) | 8,900–9,000 | PASS | CHECK | PASS |
| 6.2L V8 + Max Trailering Package | 11,700–13,100 | PASS | CHECK | PASS |
| 3.0L Duramax diesel (not AT4X) | 8,700–9,300 | PASS | CHECK | PASS |
| 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 | PASS | CHECK | PASS |
"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 466–699 lb. That comes out of your truck's payload along with everyone in the cab, so with two adults (300 lb) you need roughly 766–999 lb of payload before any cargo in the bed.
2.7L TurboMax PASS
PASS 4,660 lb is 53% of the lowest published rating (8,800 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.
5.3L V8 PASS
PASS 4,660 lb is 51% of the lowest published rating (9,100 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.
Some ratings need the MI2 10-speed or MT tires.
5.3L V8 + Max Trailering Package PASS
PASS 4,660 lb is 43% 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) PASS
PASS 4,660 lb is 52% of the lowest published rating (8,900 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 + Max Trailering Package PASS
PASS 4,660 lb is 40% 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) PASS
PASS 4,660 lb is 54% of the lowest published rating (8,700 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.
3.0L Duramax + Max Trailering Package PASS
PASS 4,660 lb is 40% 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) PASS
PASS 4,660 lb is 55% of the lowest published rating (8,500 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.
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
- Key West 219 FS: Key West model page (Weight, fuel capacity, max HP), checked 2026-10-29
- Engine weight: Yamaha Outboards spec page (Yamaha 4.2L V6 F225-F300 (heaviest listed variant), 588 lb)
- Method and assumptions: How we calculate
Related checks
Other boats with a 2026 GMC Sierra 1500
- Sea Hunt Ultra 219 (~4,670 lb)
- Key West 230 BR (~4,610 lb)
- Tidewater 210 CC (~4,590 lb)
- Carolina Skiff 23 LS (~4,770 lb)
- NauticStar 212 Legacy (~4,540 lb)
- Yamaha AR200 (~4,530 lb)