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Duramax diesel comes to large GM vans

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Alex Law
A fuel-operated heater (FOH) is also available for vans equipped with the Duramax 6600, which is the industry's first factory-installed application for full-size vans and it quickly provides heat to the vehicle interior in cold weather. The system is designed into the Express and Savana's chassis, Chess says, and that saves customers the time and labor of upfitting an aftermarket system.

The electronically controlled fuel-operated heater operates automatically, turning on and off within load 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 of heating energy.

Chess also makes a case for the Chevy Express and GMC Savana models in general, since they offer ''uncompromising versatility in the full-size van segment. Both vehicles are available with two wheelbase lengths -- regular (3429 mm) and extended (3937 mm).

''Stable handling, precise steering, superior ride motion control and balance, as well as a quiet, isolated driving experience are hallmarks of all vehicles in the lineup,'' Chess says.

Express and Savana also benefit from continual refinements to an already solid structure, Chess says. ''The three-piece frame features fully boxed sections for superior strength and rigidity, while extended and tapered front frame rails are used for improved crashworthiness. Also, additional tubular frame cross members are used to increase torsional stiffness.''

Chess also believes that ''confidence behind the wheel is enhanced with a standard four-wheel antilock disc brake system with Hydroboost. This system works with a high-volume brake master cylinder to provide increased stopping power with an easy, linear feel on the brake pedal. Dynamic rear proportioning also is used and helps apply the correct amount of pressure to the rear wheels, depending on whether the van is loaded.''

On top of all that, the StabiliTrak stability control system is standard on passenger models and will go a long way toward keeping the vehicle on the road in bad conditions.

''Surprising details are found throughout Express and Savana,'' Chess says, ''items that become important to customers who use their van as a mobile office.'' This would include ''supportive front seats, excellent interior lighting, glove-friendly door handles, convenient storage pockets, secondary power outlets and durable carpeting.''

Perhaps most importantly, an industry-first 60/40-split left-hand side-hinged door provides the segment's most flexible loading capability. It is available on regular-length cargo vans and offers complete driver's side access to the second-row and/or seats or cargo compartment.
photo:General Motors Corporation
Alex Law
Alex Law
Automotive expert