- Navigation radio
- Rear vision camera system (delivered ready to be installed)
- Higher GVWRs on 3500 models
Chevrolet Express Cutaway offers customers and upfitters flexibility and durability, with three available wheelbases, single or dual rear wheels and three engine choices – including the powerful Duramax 6.6L turbo-diesel.
Special-equipment packages are available for ambulance, RV, shuttle bus and school bus construction.
New for 2013 is an available navigation radio, as well as rear vision camera system. It is shipped ready to be installed and includes the camera, cable and inside mirror with camera display.
3500 models also offer higher GVWRs for 2013 – 10,050 pounds (4,559 kg) and 10,100 pounds (4,581 kg). The 4500 models’ maximum GVWR remains 14,200 pounds (6,441 kg).
Express design and exterior features
Express interior standard and available features
Express powertrains – 6.6L Duramax diesel
The Duramax turbo-diesel V-8 is offered in Express Cargo, delivering best-in-class torque and horsepower. Known by its “LGH” engine code, it is rated at 260 horsepower (194 kW) and 525 lb.-ft. of torque (712 Nm).
To meet more stringent emissions requirements, the LGH Duramax was designed with a robust EGR cooling system, along with revised turbocharger tuning that helps enhance EGR performance. It also has a large-capacity selective catalytic reduction system. In fact, the engine features the latest in emission control technology, making it the cleanest Duramax engine ever produced. NOx emissions are controlled via a Selective Catalyst Reduction aftertreatment system that uses urea-based Diesel (Emission) Exhaust Fluid (DEF). The DEF is housed in a 5.83-gallon (20 L) tank and needs to be replenished about every 5,000 miles (8,000 km). Electrically heated lines feed the DEF to the emission system to ensure adequate delivery in cold weather.
The Duramax also includes GM’s second-generation diesel particulate filter system. Unlike most competitors’ systems, the Duramax regenerates its diesel particulate filter using a downstream injection of diesel fuel directly into the exhaust stream and can travel up to 700 miles (1,125 km) between regenerations – a 300-mile (482 km) increase over the previous Duramax engine. The use of downstream injection also helps improve engine life by eliminating concerns surrounding the possibility of diesel fuel contaminating engine oil, which can happen when fuel used for regeneration is introduced directly into the cylinder.
The Duramax also provides outstanding cold-weather performance, with microprocessor-controlled glow plugs capable of gas engine-like start performance in less than three seconds in temperatures as low as -20 degrees F (-29 C), without a block heater. The engine has been developed to operate for at least 200,000 miles (322,000 km) on a rough-duty cycle without the need for a major overhaul; and it is backed with a five-year/100,000-mile powertrain warranty.
A fuel-operated heater (FOH) also is available for vans equipped with the Duramax 6.6L to quickly provide heat to the vehicle interior in cold weather. The seamlessly integrated system is designed into the Express chassis, saving customers the time and labor of upfitting an aftermarket system. The electronically controlled, fuel-operated heater operates automatically, turning on and off within parameters that include outside air temperature, fuel level, coolant temperature and whether the engine is running. It features a self-contained, pressurized auxiliary coolant heater (with a surge tank) that uses diesel fuel to generate up to 17,200 Btu/h (5 kW) of heating energy.
The Duramax engine is backed by GM’s Hydra-Matic 6L90 heavy-duty six-speed automatic transmission featuring Tow/Haul mode.
Express powertrains – gas/FlexFuel engines
A 4.8L V-8 is standard on 3500 models and cranks out 280 horsepower (209 kW) and 295 lb.-ft. of torque (398 Nm), while a 6.0L V-8 is standard on 4500 models. It is rated at
324 horsepower (241 kW) and 373 lb.-ft. of torque (506 Nm). The 6.0L is also offered in a special version – engine code LC8 – with hardened valve seats for the available Dedicated Liquified Petroleum Gas model (4500 models).
The 4.8L and 6.0L engines are part of GM’s Gen IV small-block V-8 engine family. Designed for quiet operation, these engines include:
Backing the engines’ quietness is the assurance of long-lasting performance. The engine family was validated under extreme conditions, with the 6.0L engine dynamometer-tested to the equivalent of 200,000 miles – 50,000 miles more than other engines in the family. The engines also feature many long-life engine components that can reduce maintenance intervals and costs. The iridium-tip spark plugs, engine coolant, accessory drive belt and sealing gaskets are some of these items.
Some of the stringent durability testing included cycling engines between the peak torque and peak horsepower rpm points – the equivalent of towing a heavy trailer up a steep grade – for 600 straight hours.
The 4.8L and 6.0L engines are each matched with the 6L90 fuel-saving six-speed automatic transmission.
Powertrain special features
Express chassis and suspension
Cutaway models are built on a strong, ladder-type full frame architecture. Different frame sections support the 139-inch, 159-inch and 177-inch wheelbases. Soft-mount body-mount “donuts” and bolts, for attaching upfit bodies to the chassis, are available on all models
All Cutaway models feature an independent short-long arm (SLA) front suspension, power steering and four-wheel disc brakes with four-wheel antilock. At the rear is a hypoid drive axle and multi-leaf springs. Additional chassis and suspension features include: