Swant Graber · Barron, Wisconsin
Chevrolet Chassis Cab and Medium-Duty Guide
Last verified October 22, 2026 · Swant Graber Motors, Barron, WI
Chevrolet sells chassis cabs from the Silverado 3500 HD (up to 14,000-lb GVWR) through the 4500–6500 HD and Low Cab Forward (up to 33,000 lbs). Swant Graber Motors in Barron, WI checked every figure against chevrolet.com. New vehicles at Swant Graber Motors are sold at invoice with no dealer add-ons.
Shop Silverado Chassis Cab inventory at Swant Graber · new vehicles sold at invoice, no dealer add-ons · call 715-537-5657
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| Quick fact | Answer |
|---|---|
| Silverado 3500 HD Chassis Cab | 6.6L gas V8 (401 hp / 464 lb-ft) or Duramax 6.6L diesel (470 hp / 975 lb-ft), 10-speed Allison; up to 14,000-lb GVWR, 7,329-lb payload, 40,000-lb GCWR |
| Silverado 4500/5500/6500 HD | GVWR 14,001–23,500 lbs; up to 37,500-lb GCWR; Regular or Crew Cab; 165"–243" wheelbases |
| Low Cab Forward | 3500 HG–7500 XD; 6.6L gas, 5.2L diesel or 6.7L Cummins diesel; up to 33,000-lb GVWR, 22,657-lb payload |
| Cabs | Regular Cab and Crew Cab |
| Upfits | Dump, stake, utility/service, box |
| Swant Graber store | Swant Graber Motors, 1690 E Division Ave, Barron |
| Pricing at Swant Graber | New vehicles sold at invoice, no dealer add-ons; doc fee $127.50 |
Chevy chassis cabs: which one fits the job
Chevrolet's chassis cab lineup runs from the Silverado 3500 HD Chassis Cab (up to 14,000-lb GVWR) through the Silverado 4500 HD, 5500 HD and 6500 HD (up to 23,500-lb GVWR) to the Low Cab Forward cab-over trucks (up to 33,000-lb GVWR); Swant Graber Motors in Barron can spec and order the chassis for your upfit.
| Chassis | GVWR (Chevrolet) | Notes |
|---|---|---|
| Silverado 3500 HD Chassis Cab | Up to 14,000 lbs | 60" or 84.5" cab-to-axle; payload 6,047–7,329 (Reg) / 5,704–6,777 (Crew) lbs |
| Silverado 4500 HD | 14,001–16,500 lbs | Regular 165"–243", Crew 175"–235" wheelbase |
| Silverado 5500 HD | 17,500–19,500 lbs | Same wheelbases |
| Silverado 6500 HD | 21,000–23,500 lbs | Up to 37,500-lb GCWR; 4x2 and 4x4 |
| Low Cab Forward | 12,000–33,000 lbs | Up to 248" wheelbase, 30-ft box, 31.5-ft turning radius |
chevrolet.com. The 4500–6500 HD figures are from Chevrolet's 2025 page, the latest it publishes.
Engines and GCWR
The Silverado 3500 HD Chassis Cab offers a 401-hp 6.6L gas V8 or the 470-hp, 975 lb-ft Duramax 6.6L turbo-diesel (with exhaust brake), both with a 10-speed Allison; the GCWR runs 24,000–40,000 lbs depending on configuration.
| Low Cab Forward model | Engine (Chevrolet) |
|---|---|
| 3500 HG, 4500 HG, 5500 HG/XG | 6.6L V8 gas, 350 hp / 425 lb-ft |
| 4500 HD/XD, 5500 XD | 5.2L turbo-diesel I-4, 215 hp / 452 lb-ft |
| 6500 XD, 7500 XD | 6.7L Cummins turbo-diesel, 260 hp / 660 lb-ft, 6-speed Allison |
chevrolet.com 2026.
2026 vs. 2027 chassis cabs
As of October 22, 2026, chevrolet.com lists the 2026 Silverado 3500 HD Chassis Cab and Low Cab Forward as current and shows the 2025 4500–6500 HD as its latest published page; Chevrolet's 2027 Silverado HD preview covers pickups, so ask us about 2027 chassis cab order timing.
See the Silverado HD guide for 2027 HD pickup changes.
Buying a used chassis cab
On a used chassis cab, check the GVWR, cab-to-axle length and the upfitter's body and its documentation, because equipment from independent suppliers isn't covered by the GM new-vehicle warranty.
Check open recalls on any VIN at nhtsa.gov/recalls.
Certified used chassis cabs
CarBravo certification is for retail cars, trucks and SUVs, so most used chassis cabs at Swant Graber Motors are sold as non-certified used vehicles with our dealer limited warranty where they qualify.
Non-certified used vehicles at Swant Graber include 45 days / 5,000 miles powertrain, on used units 10 model years or newer with under 150,000 miles. See dealer for details. CarBravo · warranty guide
Owning a chassis cab in northwest Wisconsin
For northwest Wisconsin plow, dump and municipal work, a 4x4 Silverado 3500 HD or 4500–6500 HD chassis with the Duramax and an exhaust brake is the common spec; Swant Graber Motors can help match GVWR to your body and plow.
- Confirm the plow-prep package with your upfitter.
- Heavier bodies may need a CDL above 26,000-lb GVWR.
- Plan a spring underbody wash after salt season.
Local guides: Towing an ice house and driving on lake ice · 4WD modes in winter · Winter vehicle prep · Snowmobile trailer towing in Wisconsin · Winter prep and block heater service.
Shop Silverado Chassis Cab inventory at Swant Graber · new vehicles sold at invoice, no dealer add-ons · call 715-537-5657
New Silverado Chassis Cab in stockUsed Silverado Chassis CabCarBravo certified Silverado Chassis CabAll new ChevroletAll used ChevroletAbout CarBravo certifiedEvery inventory link
Frequently asked questions
What is a chassis cab?
A bare-frame truck with no bed, built to be upfitted with a dump, stake, utility or box body.
What's the max GVWR of a Silverado chassis cab?
Up to 23,500 lbs (6500 HD); the Low Cab Forward goes to 33,000 lbs.
What engines are in the 3500 HD Chassis Cab?
6.6L gas V8 (401 hp) or Duramax 6.6L diesel (470 hp, 975 lb-ft).
Does Swant Graber sell medium-duty Chevy trucks?
Yes. Call Swant Graber Motors to spec and order a 3500–6500 HD or Low Cab Forward.
Where is Swant Graber Motors?
1690 E Division Ave, Barron, WI. Call 715-537-5657.
How does Swant Graber price a new Chevrolet Silverado 3500 HD Chassis Cab?
Swant Graber Motors in Barron, WI sells new vehicles at invoice with no dealer add-ons. Taxes, title, registration and the $127.50 doc fee are extra.
Sources and verification
Last verified October 22, 2026 by Swant Graber Auto Group against these manufacturer and government sources. Features, ratings and availability can change; the window sticker and door-jamb labels on the exact vehicle govern.
Swant Graber Appearance Package, $1,399 (optional): Xzylon protection with a 7-year exterior/interior warranty against bugs, tar and road grime, paint protection, fabric protection, 5-year windshield protection and rustproofing for doors and body panels. It is never pre-installed or added to the price; we sell at invoice with no dealer add-ons. Package details.