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2013 GMC Savana Commercial Cutaway Review Palm Springs

June 3, 2013
GMC Commercial Cutaway

2013 GMC Savana Cutaway Palm Springs

GMC Commercial Cutaway

The 2013 GMC Savana Cutaway Van offers drivers and up-fitters in Palm Springs reliability, flexibility and durability, with three available wheelbases, single or dual rear wheels and three engine choices – including the powerful Duramax 6.6L turbo-diesel. The Duramax turbo-diesel 6.6 L engine delivers best-in-class torque and horsepower, known by its “LGH” engine code, it is rated at 260 horsepower and 525 lb.-ft. of torque.

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 after-treatment system that uses urea-based Diesel Emission Exhaust Fluid (DEF). The DEF is housed in a 5.83-gallon tank and needs to be replenished about every 5,000 miles.

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 between regenerations, which is a 300-mile 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 engine has been developed to operate for at least 200,000 miles 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.

The Duramax engine is backed by GM’s Hydra-Matic 6L90 heavy-duty six-speed automatic transmission featuring Tow/Haul mode. A 4.8L V-8 is standard on 3500 models and produces 280 horsepower and 295 lb.-ft. of torque, while a 6.0L V-8 is standard on 4500 models.  It is rated at 324 horsepower and 373 lb.-ft. of torque.  The 6.0L is also offered in a special version with hardened valve seats for the available Dedicated Liquefied Petroleum Gas model.

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 special friction-reducing polymer coating on piston skirts, full-floating piston pins, an externally mounted damping patch on the oil pan, timing chain tensioner and a quieter alternator. 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, which is 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. 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 a locking rear differential available on all models, and three- and four-tank fuel tank configurations are available on 4500 with 6.0L and LPG package. Special-equipment packages are available for ambulance, RV, shuttle bus and school bus construction.

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One Comment leave one →
  1. June 8, 2014 11:47 pm

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