2005 GMC Sierra
1500 4WD EXT CAB Pickup Hybrid
Great utility with loads of cargo room as well as people room. Quiet Hybrid
system works without much intervention. Use as electric generator for tools
Not a true hybrid system which would deliver much more gas mileage.
Interior is old GM with large foamy parts and dated buttons. Soft
suspension and loose steering.
finally brought the word 'Hybrid' to trucks. The Sierra hybrid is available
in two wheel and four wheel drive extended cab models. It offers up to 10
percent improved fuel economy over standard gasoline engine models with
reduced emissions. The two and four-wheel drive
hybrid models are available in limited quantities to retail customers in
California, Washington, and Oregon, Alaska, Nevada and Florida for the 2005
comes from a Vortec 5.3 liter V8 engine offering 295 horsepower and 335
lb.-ft. of torque. This is mated to a hydramatic four speed electronic
transmission. Mated to the Hybrid system the Sierra delivers 17 miles per
gallon in the city and 19 miles per gallon on the highway.
The Sierra hybrids are also mobile
power-generating stations, with four 120-volt/20-amp electrical auxiliary
power outlets (APO). The power outlets are located under the rear seat of
the cab and in the pickup bed. Customers can conveniently operate power
equipment without taking up the bed space typical portable generators would
A key contributor to the Hybrid's fuel efficiency
is its ability to automatically stop and restart the engine under different
operating circumstances. Instead of a conventional starter motor and
alternator, the Sierra Hybrid uses a compact 14-kw electric induction motor
or starter generator integrated in a patented, space-efficient manner
between the engine and transmission. The starter generator provides fast,
quiet starting power and allows automatic engine stops/starts to conserve
fuel, such at stop lights. It also smoothes out any driveline surges;
generates electrical current to charge the batteries and run auxiliary power
outlets; and provides coast-down regenerative braking, as an aid to fuel
The three valve-regulated
lead-acid batteries store power for the 42-volt system. The "deep-cycle"
batteries employ absorbent glass mat technology, specifically designed for
hybrid vehicles, and are tailored to GM performance requirements. Lead-acid
batteries are less costly to replace than nickel-metal hydride batteries,
have a 50- to 55-amp-hour capacity and a projected four-year lifecycle.
The interior of the Sierra is
typical GMC with dated buttons and foamy large plastic trim. Large seats up
front reminded us of the Hummer. There is ample lighting all around the
interior of the cabin. The dash is slanted down towards the windshield
which makes for a good place to store gloves and other materials, something
that comes in handy when you are on the job. We did want a real electric
outlet up front on the dash so that powering things like cell phones and a
laptop would be easy but we could not find one.
Seating is comfortable in all
positions with the large cushions up front giving good support and thinner
seats in back providing adequate comfort for a short ride. Seat heaters for
the front two seats are very powerful, a GM trait. The large center armrest
is great for all sorts of storage with a inner portion covered in non-slip
rubber so cell phones and other items would not slide around at all. The
cabin is functional which is what most people buying this truck will need.
Silverado and Sierra Hybrid's advanced multiplexed
electrical architecture enables the driver information center to monitor and
report on as many as 34 system functions, including service indicators for
"Ice Possible" and "Door Ajar," as well as feedback on the operation of the
hybrid system. Available redundant steering-wheel controls allow owners to
personalize several functions and safely access infotainment options and
provide easy access to the OnStar system. Interior stereo controls are
simple to use our multifunction leather wrapped steering wheel added
simplicity to everyday commands. A standard automatic temperature control
heating system provides dual zones for temperature individuality and did
work very well.
The feeling behind the wheel of the Silverado is very much truck
like, with a bouncy suspension and little road feel. The Sierra at highway
speeds is soft and does not feel under control. The steering is not precise
at all and here is where GM needs to do a great deal of work. The four
wheel drive system in 'auto' setting waits until wheel slip is actually
underway before sending power to other wheels which is ok if you are in mud
but not so great on ice and thin layers of snow. The front end of the
Sierra is noticeably lower than the rear which makes for a better viewing
angle of cars in front and a slightly easier time getting in and out.
Driving around town in stop and go roads, we found it quite hard to notice
the engine turning off many times. The function is very quiet and due to
the silent operation of most things at idle speed, it was a guessing game as
to when the engine was actually off.
A passenger-sensing system
and dual-level air bags are an integral part of all Silverado and Sierra
models, including the Hybrid. The system automatically deactivates the
passenger-side front air bag under certain conditions to help protect
smaller occupants. Dual-stage frontal air bags are designed to help reduce
the risk of air bag-induced injury. When the air bag system's control unit
detects an impact, it determines whether the crash is severe enough to
trigger a deployment, and whether the primary amount of inflation is
sufficient. The primary stage alone will deploy in most frontal impacts
requiring the supplemental protection of an air bag, while a secondary stage
is designed to deploy in more severe frontal collisions.
The base price of the Hybrid Sierra in four-wheel drive is
$31,700. Add to this the hybrid system for $2,500, a steep option. The
safe and sound package for $2,485 includes power drivers seat, Bose audio
system, OnStar, and XM Satellite radio. A light duty power package for
$1,675 included the 5.3L V8 engine and locking differential with trailering
equipment. Front leather seating surfaces add $800. Outside rear view
power heated mirrors with auto dimming feature on the drivers side adds
$213. Dual zone air conditioning adds $195. Steering wheel radio controls
are a separate option for $125. A 3.73 rear axle ratio adds $50. This
brings the total to $40,593 for our test car. Our sticker price also
included a $1000 hybrid discount making the final sticker $39,593.
the Sierra is a good work truck made better with the addition of an Hybrid
system for those who want to be active in the pursuit to save the planet and
help reduce our dependency on foreign oil. The Sierra does not set any
benchmarks in the fuel economy game but does put a nice green Hybrid sticker
on the side of your truck. At least you will be proud in knowing that you
are helping keep this planet green. We hope that GM can make some trucks in
the future with more modern interiors, better suspension on-road, and more
steering feel so that we all can have the utility of a truck without giving
up a stable and controlled ride.