See also:

STS adds direct-injection V-6
For 2008, STS will be the first GM vehicle equipped with a new 3.6-liter direct-injected V-6 engine. The new base powerplant, with 298 horsepower (222 kW), delivers 40 more horsepower; and torque ...

Head Restraint Adjustment
Do not drive until the head restraints for all occupants are installed and adjusted properly. To achieve a comfortable seating position, change the seatback recline angle as little as necessa ...

Safety
Six airbags, including seat-mounted side-impact airbags for the front passengers and side curtain-type airbags that protect outboard front and rear occupants, are standard. All-disc antilock brake ...