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Find a Dealer in Your Region or visit the GMC Sierra homepage
When you start with Sierra’s heavy-duty pickup frames, proven powertrains and spacious cabs, you can be assured that the resultant chassis cabs will be equally capable. Sierra combines strong and lightweight frames and powerful Vortec gasoline and Duramax diesel engines with large, comfortable cabs in a package that is ideally suited for various commercial applications.
- Three-piece modular frame with hydroformed components (in 2500 and 3500 models) that is stronger yet lighter than a conventional steel-welded frame
- Two-piece frame in 3100 models with industry-standard cab-to-axle dimensions of 1521 mm (59.9 in.) and 2144 mm (84.4 in.) for easy body installation
- Vortec 6.0L V8 engine standard
- 365-hp Duramax V8 turbo diesel engine available
- GVWRs up to 5443 kg (12,000 lb.)
GMC Sierra Chassis Cab
| Powertrain | 
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Chassis |
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Dimensions |
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Application & Advice |
Powertrain
| Engine Highlights |
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Duramax 6.6L diesel engine features four valves per cylinder, aluminum cylinder heads, variable geometry turbo charger, "Pilot" electronic fuel injection and advanced cooling. |
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| Transmission Highlights |
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Six-speed HD automatic is standard with the Vortec 6.0L V8 engine. 6-speed Allison automatic is required with the Duramax 6.6L V8 diesel engine. |
Chassis
| Chassis Highlights |
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| 2500 and 3500 models feature a three-piece modular frame that is stronger yet lighter than a conventional steel welded frame. These are basic Silverado/Sierra pickup trucks with a box delete option. Refer to the pickup section for additional information. | |||||||||||||||||||||||||||||||||||||||||
| *Nominal measurements | |||||||||||||||||||||||||||||||||||||||||
Dimensions
| Model | Wheelbase mm (in.) |
Cab-to-axle mm (in.) |
Overall Length mm (in.) |
Max. Height mm (in.) |
Width mm (in.) |
| 2500 Reg. Cab | 3378 (133) | 1420 (55.9) | 5387 (212.1) | 1935 (76..35) | 2024 (79.88) |
| 2500 Ext. Cab | 4001 (157.5) | 1420 (55.9) | 6330 (249.2) | 1955 (77.0) | 2024 (79.88) |
| 2500 Crew Cab | 4242 (167) | 1420 (55.9) | 6266 (246.7) | 1955 (77.0) | 2024 (79.88) |
| 3500 Reg. Cab | 3378 (133) | 1420 (55.9) | 5387 (212.1) | 1935 (76.2) | 2441 (96.1) |
| 3500 Ext. Cab | 4001 (157.5) | 1420 (55.9) | 6330 (249.2) | 1963 (77.3) | 2441
(96.1) DRW |
| 3600 Crew Cab | 4242 (167) | 1420 (55.9) | 6266 (246.7) | 1963 (77.3) | 2441
(96.1) DRW |
| 3100 Reg. Cab | 3480-4102 (137-161.5) | 1534-2156 (60.4-84.9) | 1521-2144 (59.9-84.4) | 1935 (76.2) | With GTY AXLE-86.00-93.90 |
| 3100 Ext. Cab | 4102 (161.5) | 1534 (60.4) | 1521 (59.9) | 1935 (76.2) | With GTY AXLE-86.00-93.90 |
Advice
Body Options for Light-duty Trucks
These light-duty chassis cabs permit the installation of special use bodies and equipment such as wreckers, dumps, stake or van bodies, etc. Body length should not normally exceed 3.66m (12 feet) and the maximum body and payload weight should not be much more than 2250 kg (5000 lb.), depending on the model and GVWR selected. It is suggested that a weight distribution calculation be made with the assistance of your GM dealer or body supplier to ensure the vehicle's axle capacities and GVWR will not be exceeded.
These chassis cabs are fundamentally pickups with the boxes deleted. This is a generally accepted industry practice.
For more information on body builders, please visit www.gmupfitter.com. Note: This is an American Web site and as such, the information provided is in English only.
GM New Vehicle Limited Warranty
The importance of reliability cannot be over-emphasized in commercial vehicles. Which is why we build them to withstand the daily rigours of commercial applications. In the unlikely event that you do run into any problems, the GM New Vehicle Limited Warranty covers most defects for 3 years or 60,000 km (whichever comes first). In addition to your GM New Vehicle Limited Warranty coverage your vehicle is covered by a 5 year/160,000 km* Powertrain Limited Warranty. Learn more about how the GM New Vehicle Limited Warranty offers you added peace of mind.
*Whichever comes first. Conditions and limitations apply. Excludes Medium-Duty. See dealer for details.
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