GMC Sierra Crew Cab
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When you need the job done right, call in a professional. For 2008, the GMC Sierra delivers professional-grade capability and performance in a truck that's engineered for the long haul. Engine choices include a full range of powerful, efficient Vortec V8s and, in 2500HD and 3500HD models, the awesome Duramax Diesel 6.6L V8, which generates more power and more torque than any other diesel in the class.* Sierra is also amazingly refined, thanks to GMC's advanced engineering and outstanding workmanship. The only thing missing? Your company name on the door.
*Based on 3/4-ton and 1-ton vehicles in the 2007 GM Large Pickup segment and latest available competitive information available at time of printing. Excludes other GM vehicles.
Sierra Pickups
- 1500 Crew Cab short box
- Electronic throttle control on all Vortec V8 engines
- Dual stage air bags in 1500 models for superior occupant protection
- Single-zone manual front climate controls standard in Extended and Crew Cab models for greater comfort
Sierra 2500HD/3500HD Pickups
- Maximum ball hitch towing capacity of 5897 kg (13,000 lb.)
- Maximum 5th wheel towing capacity of 7484 kg (16,500 lb.)
- GVWRs up to 5171 kg (11,400 lb.)
- 4WD Chassis Cab GVWR = 12,000 lb.
- Payloads up to 2707 kg (5307 lb.)
- 3500 single rear wheel (SRW) pickups in all three cab types with 4491 kg (9900 lb.) GVWR - Reg Cab SRW = 9700 lb. for 2WD model
- 353-hp Vortec 6.0L V8 engine with electronic throttle control standard
- 365-hp Duramax 6600 V8 turbo diesel engine available with class leading 660 lb.-ft. of torque.*
- Available six-speed Allison 1000 automatic transmission
- 312HP on 3500HD with Dual Rear Wheel and Gas 6.0L engine
*Requires available Allison automatic transmission.
GMC Sierra Pickup
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Chassis |
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Dimensions |
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Application & Advice |
Powertrain
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Duramax 6.6L diesel engine features four valves per cylinder, an intercooled turbocharger and direct pilot injection. |
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Automatic transmissions include a Tow/Haul mode for greater towing ability. The available Allison 6-speed automatic transmission features engine grade braking. |
Chassis
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Hydroformed through the application of very high levels of hydraulic pressure, the steel front frame section is stronger, lighter and more precise than conventional welded steel frames. The mid-frame begins as a solid, straight piece of high-strength steel. The steel is then rolled into shape without stamping, allowing it to retain its strength with no added mass. The rear frame is a strong straight-rail design (on Chassis Cab only) that easily accepts a variety of trailer hitches. It also enhances towing ability. |
Dimensions
| Model | Wheelbase mm (in.) |
Overall Length mm (in.) |
Box Length mm (in.) |
Max. Height mm (in.) |
Width mm (in.) |
| Regular Cab (Standard Box) | 3023 (119) | 5222 (205.6) | 1999 (78.7) | 1935 (76.2) | 1995 (78.5) |
| Regular Cab (Long Box) | 3378 (133) | 5708 (224.7) | 2483 (97.7) | 1803 (71.0) | 2029 (79.9) |
| Extended Cab (Short Box) | 3401 (133.9) | 5596 (220.3) | 1760 (69.3) | ||
| Extended Cab (Standard Box) | 3645 (143.5) | 5850 (230.3) | 1999 (78.7) | 1808 (71.2) | 1994 (78.5) |
| Extended Cab (Long Box) | 4001 (157.5) | 6330 (249.2) | 2483 (97.7) | 1798 (70.8) | 1994 (78.5) |
| Crew Cab (Short Box) | 3645 (143.5) | 5738 (225.9) | 1760 (69.3) | 1872 (73.7) | 1994 (78.5) |
| Crew Cab (Standard Box) | 3886 (153) | 6094 (239.9) | 2003 (78.86) | 1935 (76.2) | 2024 (79.7) |
| Crew Cab (Long Box) | 4242 (167) | 6572 (258.7) | 2484 (97.8) |
Applications
Trailering Special Equipment Packages
If you intend to use your Sierra for towing, we recommend the available Trailering Special Equipment Packages
Trailering Special Equipment Package - Sierra 1500
This heavy-duty package includes a weight distributing platform trailer hitch receiver, a heavy-duty 8-lead wiring harness with a 7-way sealed connector with a 4-pin adapter, extra capacity transmission cooling, a high capacity air cleaner and 4 blunt cut wires for aftermarket brake controller. The available integrated brake controller enables the trailer's brakes to operate in sync with the vehicle's brakes. The controller is integrated with Sierra's electrical system and anti-lock braking system. To activate the controller, simply turn on the switch located on the lower left section of the instrument panel.
Trailering Special Equipment Package - Sierra 2500HD/3500HD
This heavy-duty package includes a weight distributing platform trailer hitch with a 2.5" receiver, a heavy-duty 8-lead wiring harness with a 7-way sealed connector.
Advice
Choosing the Right Model
Sierras provide a wide variety of cab types, powertrains, payload and trailering capacities for use in commercial applications. In fact, there are so many choices, a detailed review of requirements with a knowledgeable salesperson is recommended to ensure proper truck selection.
Obviously, payload capacity is paramount. Selecting a 1500 series to do the work of a one-ton pickup is false economy as the result will be unsatisfactory performance and premature failures. Special applications such as snow plowing or trailering can place abnormally high loads on the front or rear axle components. For example, a typical 8 foot snow plow requires at least a 2500 HD pickup to provide sufficient front Gross Axle Weight Rating (GAWR) to handle this extra weight.
Sierra 3500 Dual Rear Wheel models have dual rear wheels that provide and extra measure of loading stability, traction and braking - important attributes when towing heavy 5th-wheel trailers.
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). 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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