Truck fit guide / Three-quarter-ton truck
Truck Bed Camper for GMC Sierra 2500
The Sierra 2500 fits both Kimbo platforms with three-quarter-ton payload margin — Denali HD just needs a closer look at the sticker.
Recommended Kimbo
Kimbo 8
From $42,990
Compatible generations
K2HD, T1HD
2015–2019, 2020+
Payload range
2,960–3,910 lb
Door-jamb sticker is the truth.
Tailgate rule
Needs 6.5'–8' bed
Bed length determines tailgate behavior.
How it fits
Why a Kimbo works on a GMC Sierra 2500.
The Sierra 2500 HD is the GMC-badged twin of the Silverado 2500 HD — same frame, same Duramax/Allison drivetrain on diesel-equipped trucks, same bed dimensions. For Kimbo install purposes the trucks are interchangeable. K2HD generation (2015–2019) and T1HD generation (2020+) both fit either Kimbo with comfortable margin.
Trim selection mostly doesn't matter on a three-quarter-ton truck — Sierra 2500 SLE, SLT, AT4, and AT4X all carry payload that exceeds either Kimbo's needs by a wide margin. The exception is **Denali HD**: same trim-package payload reduction story as the Sierra 1500 Denali (sunroof, 22" wheels), but on a heavier truck. Denali HD still fits both Kimbos, but verify your specific door-jamb sticker — some Denali HD configurations land closer to 2,800 lb than the typical 3,500 lb most Sierra 2500s carry.
**AT4** and **AT4X** are the off-road-tuned Sierra 2500 trims. AT4 sits on standard suspension with off-road tires and styling — fits cleanly. AT4X sits taller on Multimatic shocks with significant suspension travel — fits with airbags and possibly jack-bracket extensions, but the truck handles a Kimbo 8 well in real-world use.
By generation
Year-by-year fit notes.
Truck-camper fit isn't one-size-fits-all across model years — frame, cab clearance, and suspension change between generations. Here's where each GMC Sierra 2500 sits.
2015–2019
GMC Sierra 2500 K2HD (2015–2019)
2020+
GMC Sierra 2500 T1HD (2020+)
The math
Your payload margin, calculated.
Real numbers for a fully-provisioned Kimbo install on a GMC Sierra 2500 at the middle of its payload range. Substitute your own door-jamb sticker for a precise calculation.
Calculating for
- GMC Sierra 2500 payload (mid-range)+ 3,435 lb
- Kimbo 8 (base)− 980 lb
- Fresh water (4 gal)− 32 lb
- Propane (20 lb tank)− 30 lb
- Gear load− 100 lb
- 1 occupant in cab (200 lb)− 200 lb
Remaining margin
+2,093 lb
Calculated using the midpoint of the GMC Sierra 2500's published payload range. Your specific truck's door-jamb sticker is what counts. Trim packages, options (sunroofs, larger wheels), and tow packages can swing this number by 200–500 lb in either direction.
The Kimbo team's pick
If we were buying a GMC Sierra 2500…
If we were buying a Sierra 2500 for a Kimbo, we'd get a T1HD SLT or AT4 Crew Cab with the 6.75' Standard Bed and the 6.6L Duramax diesel + Allison transmission. AT4X if you specifically want the off-road dynamics. Skip Denali HD unless you've already ordered one — the trim works against camper margin.
Recommended platform
From $42,990
Kimbo 8
Full-size living. Wet bath, queen bed, extended off-grid systems.
- — 980 lb base
- — R10 insulation, four-season ready
- — Queen cabover bed + dedicated wet bath
- — Hand-riveted aluminum monocoque shell
GMC Sierra 2500 questions
GMC Sierra 2500-specific questions, answered.
Considering a different truck?
Related fits.
Talk through your GMC Sierra 2500.
Door-jamb sticker, intended use, modifications you're considering — bring it all by. We'll tell you honestly whether the rig will work the way you want it to.