New for 2010
GM has dropped the long-running 6.0-liter V-8 engine from the Sierra lineup, leaving the powerful 6.2-liter V-8 for heavy towing needs. The rest of the Sierra's eight-cylinder lineup benefits from increased availability of its new six-speed transmission for regular and extended cab models equipped with the 5.3-liter V-8. Also, the 4.8-liter and 5.3-liter V-8 engines have been enhanced, with variable valve timing for improved emissions and better fuel economy.
Those with portable MP3 players can connect and play their music collections with the truck's audio system through a USB connection. Standard side curtain and side-impact airbags are welcome safety additions.
See also:
Armrest Retaining Strap
WARNING
A rear center armrest that is not properly stowed and secured could fall forward
during a sudden stop or collision. The armrest could contact an infant secured in
a rear&-facing child ...
Rear Vision Camera (RVC)
The vehicle may have a rear vision camera system. Read this entire section before using it.
WARNING
The RVC system does not display pedestrians, bicyclists, animals, or any other object located outs ...
Folding the Seatback
Notice: Folding a rear seat with the safety belts still fastened may cause damage to the seat or the safety belts. Always unbuckle the safety belts and return them to their normal stowed position befo ...