GMC Sierra Hybrid 2005 Accentuated with GMC
Parts from Parts Train
By Jenny McLane
A standard Vortec 5300 5.3-liter V8 engine powers the Sierra
Hybrid and a 4-speed Hydra-Matic automatic transmission coupled
with the full-size truck segment’s first hybrid propulsion
technology for improved fuel economy.
The Sierra hybrid uses electric power even less frequently. Its
gasoline engine can shut down when the car is stopped (actually,
when it's braking to a stop, below 13 mph or so) and-that's it.
The batteries (three 14-volt units plus the standard 12-volt)
cannot power the truck at low speeds. Nor do they help out the
gasoline engine, which therefore can't be any smaller. It's the
same 5.3-liter V-8 GM pickup buyers know and love. Because of the
limited nature of this hybrid system, the benefits are mild:
roughly 2 mpg in city driving and 1 mpg during the EPA's highway
cycle.
The system replaces the traditional starter motor and alternator
with a compact 14-kw electric induction motor or starter
generator integrated between the engine and transmission. The
starter generator provides fast, quiet starting power and allows
the gasoline engine to automatically start and stop under certain
conditions to conserve fuel.
The Sierra Hybrid also offers four 120-volt/20-amp electrical
auxiliary power outlets located under the rear seat and in the
pickup bed. Because the 5.3-liter V-8 is the same as that in
non-hybrid pickups, its power and torque outputs are the same
(295 horsepower, 325 pound-feet of torque). Acceleration, towing,
and payload are undiminished. The extra hybrid gear takes up very
little space-the biggest component, the three extra batteries, is
under the rear seat. One interesting feature of the hybrid trucks
are its four, 120-volt 20-amp AC power outlets in the cargo bed
and the rear seat; but the engine must be running in order to use
them.
As in hybrid cars, the gas engine shuts off at stoplights to save
fuel, and an electric motor restarts the engine when the gas
pedal is pushed. Unlike most hybrids, the electric motor does not
help propel the vehicle. The system does include a unique feature
aimed at commercial users and picnic tailgaters: a generator that
provides 120-volt power for running electrical accessories.
Available in California, Washington, Oregon, Alaska, Nevada and
Florida, the Sierra Hybrid delivers up to 10 percent better fuel
economy with the same power and performance as the 5.3-liter V8.
In fact, that same engine powers the Hybrid, developing the same
295 horsepower and 335 pound-feet of torque.
GM is not to be outpaced in this hurried race for the development
of producing fuel cells. With all these amazing technological
breakthroughs in the automotive industry, Partstrain stands by
its commitment of delivering excellently engineered GM
performance parts, replacement auto parts to go with GM's efforts
of sustained production of environment friendly vehicles.
Browse through
http://www.partstrain.com/ShopByVehicle/GMC for
all of your GM auto body parts needs and have a choice in its
stock of high quality and well-crafted GM accessories and
performance parts. Excellent customer service awaits you 24 hours
a day, seven days a week. Partstrain adheres to rigid tests for
utmost quality control and sees to it that their GM Parts do not
diminish the performance of your car.
Jenny McLane is a 36 year old native of Iowa and has a knack for
research on cars and anything and everything about it. She works
full time as a Market Analyst for one of the leading car parts
suppliers in the country today.
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