segment
DETROIT announced today that new 2011 GMC
Sierra heavy-duty pickups have increased towing and payload rat-
ings through ongoing development and testing, making them the
most capable and powerful heavy-duty pickups in the segment.
The ratings have been in-
creased to 21,700 pounds of
towing and 6,635 pounds of
payload.
"When developing the Sierra
HD our focus has consistently
been to deliver customers the
most capable heavy-duty trucks
in the market, along with pre-
mium features and styling that
distinguish GMC amongst the
competition," said Rick Spina,
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GM Full-size Truck global ve-
hicle line executive.
"Our first set of capability
tests confirmed that the team
had exceeded the payload and
towing targets by a significant
margin, Ongoing testing dem-
onstrated a clear opportunity to
increase the true capabilities of
these trucks."
The GMC Sierra HD en-
gineering team was able to
achieve the increase in towing
capacity to 21,700 by putting
the Sierra HD through a wide
variety of tests over various ter-
rains, grades and weather con-
ditions.
Extensive design and lab
analysis, climatic wind tunnel
testing, and actual on-road ex-
treme ride and handling test-
ing methods were all used to
confirm stable handling and
performance of the powertrain,
drivetrain and brake compo-
nents at maximum gross com-
bined weight rating (GCWR).
The GCWR is increased to
29,200 pounds.
To achieve the increased pay-
load capacity, engineers used
higher strength steel for the
cargo box sills.
The team conducted a signif-
icant amount of testing where
maximum payloads tested the
stronger cargo box and rear
axle components. The maxi-
mum payload rating has been
increased to 6,635 pounds.
"We encourage consumers to
test drive the Sierra HD against
the competition," said Spina.
"Based on our test results,
we are confident our HDs will
prove to be the best choice for
real-world towing and hauling
needs."
For the first time ever, GMC
will be offering the exclusive
Denali line in our heavy-duty
pickups with the Sierra Denali
2500 and 3500 HDs. The De-
nali version is distinguished
by its iconic four-bar, chrome
grille with round air inlets,
along with body-color bumpers,
chrome door handles, chrome
accents and and 17- (Dually),
18- and 20-inch polished forged
aluminum wheels.
Silverado HD bests the competition with 21,700
pound towing and 6,635 pound payload ratings
DETROIT- Through ongoing development and testing, the 2011
Chevrolet Silverado HD capability ratings have been increased to
21,700 pounds of towing, and 6,635 pounds of payload. Based on
these ratings, the Silverado HD will offer heavy-duty truck buyers
the most power and most capability available in the segment.
According to Rick Spina, GM Full-size Truck global vehicle line
executive, the increased ratings area result of exceeding the origi-
ha!, performance targets for the Silverado HD:
Our focus has consistently been on delivering customers the
most capable heavy-duty trucks in the market. The first set of ca-
pability tests confirmed that the team had exceeded the payload
and towing targets by a significant margin. Ongoing testing dem-
onstrated a clear opportunity to increase the true capabilities of
these trucks. Even pulling a combined weight of nearly 15 tons
seems easy behind the wheel of a 2011 Silverado HD 3500 with the
proven Duramax Diesel.
To certify increased payload and towing capacities for the 2011
Silverado HD, engineers conducted a battery of tests.
Based on extensive testing at maximum gross combined weight
rating (GCWR) to validate the durability of the powertain, drive-
train, and brake components, the GCWR is increased to 29,200
pounds.
985486 4242
Westey Luttmann
Owner
Mark Watker
Master Technician
Bud Ortando
Owner
