GMC 2011 Sierra Options Manual page 4

s I e r r a H Y B r I D
33% MORE FUEL EFFICIENT. 100% AhEAD OF ThE COMPETITION.
sierra Hybrid is the first two-mode hybrid in a full-size pickup, an accomplishment unmatched by the
competition. It takes the best of both gas and electric propulsion to provide you with the most efficient power
in a given driving situation. the result is a 33 percent increase in epa-estimated city fuel economy compared
to our most efficient gasoline-only sierra. Better yet, this technology does not sacrifice capability. sierra Hybrid
1
can handle over 1500 lbs of payload, and offers up to 6100 lbs of conventional trailering capacity.
2
v a r I a B l e v a l v e t I m I N g ( v v t )
the heart of sierra Hybrid is the 6.0l v-8 vvt that produces 332 horsepower and 367 lb-ft of torque.
the secret to this engine's balanced power is variable valve timing. this feature helps the engine produce
near-peak levels of torque across a wide rpm range. this gives you both responsiveness in city driving
and bold acceleration for passing and trailering.
f I g u r e 1 : t H e B e s t f u e l e c O N O m Y O f a N Y f u l l - s I z e p I c k u p
at low speeds and light loads, sierra Hybrid can reduce fuel consumption by shutting off the engine
and operating on electric power alone. It can also run on engine power alone, or a combination of both
gas and electric. In the city, this technology offers an epa-estimated 20 mpg.
at highway speeds, sierra uses its 6.0l v-8 vvt engine in either v-4 or v-8 operation—sometimes with an
extra boost of electric power—as conditions warrant. full v-8 power is available for trailer towing, passing
or pulling on a long, steep grade. On the highway, sierra Hybrid has an epa-estimated 23 mpg.
r e g e N e r a t I v e B r a k I N g
During normal stops, regenerative braking uses the motors in the hybrid transmission as generators to
decelerate the vehicle by applying resistance in the motors rather than brake friction. at the same time,
the motors are capturing that energy as electricity in the 300-volt battery pack, electricity that is available
for the next acceleration cycle.
1 EPA-estimated mpg Sierra Hybrid 20; Sierra 15. 2 Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo.
weight ratings are calculated assuming a base vehicle, except for any option(s) necessary to achieve the rating, plus driver. The weight of other optional equipment,
passengers and cargo will reduce the maximum trailer weight your vehicle can tow. See your GMC dealer for details.
2
f I g u r e 2 : a c t I v e
f u e l m a N a g e m e N t
( a f m )
for maximum fuel econ-
omy when you don't need
extra power, afm can
deactivate four of the
3
engine's eight cylinders.
as the load and your
demands increase, the
cylinders can reactivate
within as little as 20
milliseconds to give you
maximum power for
4
trailering and passing.
p r O v e N
B a t t e r Y p O W e r
to give your electric
drive system ample
power without sacrific-
ing capacity, sierra
Hybrid has a 300-volt
battery pack built with
Nickel-metal Hydride
(NimH) technology. It
tucks under the rear
seat area, out of the
way, so your passenger
capacity and cargo
3 Maximum trailer
space are unchanged
from other sierras.
4 Based on GM 2010 Large Pickup segment.
p O W e r t r a I N c O N t r O l l e r
6 . 0 l v - 8 v v t W I t H a c t I v e
f u e l m a N a g e m e N t ( a f m )