Adds
structural strength without increasing weight on built-to-last full-size
pickups
DETROIT – Full-size pickups are unique. Their
owners routinely use them in ways that would horrify most car owners. They pull heavy trailers thought the
mountains, haul tools and supplies down washboard gravel roads, and slog
through mud and muck on farms and construction sites. And trucks are expected
to perform these tasks for years on end, with a minimum of repairs.
To
help the new 2014 Silverado measure up to these tasks, engineers chose
high-strength steels for the backbone of the new trucks – the fully boxed
frames and the structure of the cabs that carry and protect the occupants.
“Chevy
owners use their trucks for earning a living and taking care of their
families,” said Jeff Luke, executive chief engineer. “To meet the needs of these hard-working men
and women, we chose high-strength steels for the key structural elements of the
2014 Silverado. That reduces the weight of these components without sacrificing
the toughness and durability customers count on.”
To
ensure that the new Silverado is up to the challenge, key elements of the
updated frame, including the main rails and major cross members, are made from
high-strength steel. Hydroforming is
used to improve strength and reduce mass of the front of the frame.
The cab
structures are all new, and incorporate high strength steel in the A-pillars,
B-pillars, roof rails and rocker panels. Ultra-high-strength steel is used in
areas of the rocker panels and underbody in anticipation of new shallow-offset
crash tests. In all, about two-thirds of the cab structure is made from
high-strength steels.
Even
the pickup bed benefits from tougher steels. The 2014 Silverado 1500 features a
roll-formed steel pickup box, which is lighter, stronger and more durable than
traditional stamped steel boxes used by major competitors.
Aluminum
is used in a number of areas to reduce mass without compromising
dependability. The blocks and cylinder
heads of all three EcoTec3 engines are cast aluminum, while 4WD
crew cab models use forged aluminum upper front control arms and cast aluminum
lower control arms and steering knuckles for a mass reduction of 42 pounds. The
hoods are also aluminum, saving 17 pounds over a comparable steel panel.
The
strategic use of high strength steels, aluminum and other premium materials
enabled engineers to create a new Silverado that is stronger, more capable and
more efficient than current models, while still being lighter than comparable
models from a key competitor.
The
materials and technologies used for Chevrolet pickups will continue to evolve,
as truck customers face fluctuating fuel prices and truck makers engineer for
strict new federal fuel economy standards, said Luke.
“But
whether we are engineering full-size pickups like Silverado, or our efficient
new midsize trucks, we can’t forget that trucks are workhorses. The materials
we select and the powertrains we engineer must be able to get the job done, and
save our customers money by holding down overall cost of ownership year in and year out.”
To help
validate its design and materials for the 2014 Silverado, GM’s new full-size
trucks will undergo more than 6 million miles of durability testing on proving
grounds and tough test roads, equivalent to 240 trips around the earth. In
addition, the trucks will accumulate real-world mileage in excess of 7 million
miles during final testing, bringing total test miles to more than 13 million.
Founded in 1911 in Detroit, Chevrolet is now
one of the world's largest car brands, doing business in more than 140
countries and selling more than 4 million cars and trucks a year.
Chevrolet provides customers with fuel-efficient vehicles that feature spirited
performance, expressive design, and high quality. More information on Chevrolet
models can be found at www.chevrolet.com
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