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:
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF
in each shift lever position.
○ The ignition should turn to LOCK/OFF only when the shift lever is in P (Park ...
Securing a Child Restraint Designed for the LATCH System
WARNING
If a LATCH-type child restraint is not attached to anchors, the child restraint
will not be able to protect the child correctly. In a crash, the child could be
seriously injured or killed ...
Passenger Sensing System
The vehicle has a passenger sensing system for the right front passenger position.
The passenger airbag status indicator will be visible on the overhead console when
the vehicle is started.
Uni ...





