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Grand Design Influence 3503GK

Fifth wheelbuilt 2024– (in production)Mixed build tierFindable on the used market
WHAT ONE COSTS
$134,400MSRP today

Still in production. A used 2023 would run roughly $79,300.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~15,176 lbestimated as towed, for 2 people

dry weight 13,700 lb + fresh water (81 gal, full) 676 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around16,865 lb (10% margin)
GVWR (the sticker maximum)18,000 lb
Tongue weight, loaded~2,958 lb (19%)
WHICH TOW VEHICLES IT FITS: 18 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 3503GK's published weights changed mid-run. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
The 77it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length38.3 ft
Height (incl. A/C)13.4 ft
Width8.4 ft
GVWR18,000 lb
Dry weight13,700 lb
Dry tongue weight2,670 lb
Sleeps4
Slide-outs3
Axles2
Fresh water81 gal
Grey water106 gal
Black water53 gal
Air conditioning15,000 BTU
Solar (standard)330 W

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Front king bed(Permanent)72×80
  • 1× Living-room sofa(Convertible)—
  • 1× Dinette(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Grand Design (Mixed tier): Grand Design

YEAR BY YEAR: WHAT CHANGED
YEARSGVWRDRYMSRP
2024–2516,800 lb13,868 lb$134,352
2026–18,000 lb13,700 lb$134,352
  • 2024Introduced as one of three launch floorplans
  • 2026GVWR 16,800 to 18,000 lb
FINDING ONE

Findable: a few listed nationwide most weeks. Why: still in production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Launch-year grand-kitchen plan - the biggest galley in the three-slide group.

OTHER INFLUENCE FLOORPLANS
2903RL · 18,000 lb · sleeps 43003RL · 18,000 lb · sleeps 43203GK · 18,000 lb · sleeps 33704BH · 16,800 lb · sleeps 83804DS · 19,000 lb · sleeps 73904BH · 19,000 lb · sleeps 9the whole line →
Find one for sale

Live listings for the 3503GK on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Influence line ↗

Is the 3503GK your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from manufacturer spec sheets, retrieved 2026-07.