Coupled to the new 3.6L V-6 engine or the 4.6L Northstar V-8 is GM Hydra-Matic’s fuel-saving 6L50 six-speed electronically controlled automatic transmission. It has a 6.04:1 overall ratio that enables a steep first-gear that helps deliver strong launch acceleration.
Active steering technology
STS’ StabiliTrak electronic stability control system includes the option of active steering technology. In addition to controlling brakes and reducing engine power, this latest iteration of StabiliTrak combines active front steering to turn the front wheels into the skid when rear wheels lose traction.
The system includes a new steering motor assembly combined with computer-driven electronic controls that measure wheel slippage at all four wheels independently during acceleration, braking and adverse road conditions. Active steering is available exclusively on all-wheel-drive 4.6L Northstar V-8 models.
Lane Departure Warning System
An advanced Lane Departure Warning System is available on the 2009 STS. Controlled by a camera located in the rearview mirror that reads the lines in the road, the system alerts drivers when they have strayed into another lane without signaling. Drivers receive both audible and visual alert cues.
When the Lane Departure Warning System is engaged, a driver traveling at 35 mph or more who crosses a detected lane marking without signaling is alerted in two ways: The system flashes an amber indicator light located in the fuel gauge of the instrument panel, and an alerting chime of three beeps is played. The system does not steer the vehicle; it is designed only to alert drivers so they can take appropriate action to move the vehicle back into the lane.
Side Blind Zone Alert System
Another optional feature is a Side Blind Zone Alert System that extends and enhances driver awareness and vision. Alternating radar beams in Side Blind Zone Alert System sweep adjacent lanes of traffic, covering a zone of about one lane over from both sides of the vehicle, or 11 feet (3.5 m). The zone starts at each side mirror and goes back about 16 feet (5 m).
When the system is engaged, a driver will know that following vehicles in the adjacent lanes are entering their side blind zone when an amber symbol, located in the outside rearview mirror, is illuminated. The system is not designed to detect vehicles outside of the side blind zone that may be rapidly approaching, or detect pedestrians, bicyclists or animals. It’s designed to ignore infrastructure such as fire hydrants or parked cars. In addition, the system displays do not come on while the vehicle is approaching or passing other vehicles.
Performance handling package
A performance handling package is available for V-8-equipped rear-wheel and all-wheel-drive models and V-6-equipped rear-drive models. The package includes 18-inch x 8.5-inch aluminum alloy, chrome-plated wheels fitted with P255/45R18 Bridgestone Potenza summer-only tires.
Four-piston caliper Brembo brakes, with front rotors measuring 355 mm x 32 mm and 365 mm x 28 mm rear rotors, provide enhanced stopping ability. All four rotors are vented.
The STS Platinum sedan extends the luxurious look and feel of the STS with elements such as 18-inch chrome-finish wheels, a brighter chrome-finish grille and exclusive Platinum badging.
Inside, STS Platinum features a hand-cut, sewn and leather-wrapped instrument panel, door trim and center console areas. The seats are fully leather, a semi-aniline variety called Tuscany. Luxury touches include chrome accents on the instrument panel and doors, a leather-wrapped and heated steering wheel, olive ash burl wood accents with a saddle-stained shade, premium floor mats, Alcantara headliner and a Platinum badge on the door sill. STS Platinum comes in either a Cocoa over Cashmere or an Ebony interior color scheme.
The supercharged Cadillac STS-V is a powerful expression of Cadillac power and performance. It carries all the sophistication of its STS siblings, yet elevates the performance and luxury attributes of the brand’s V-Series lineup to their fullest extent.
The 469-horsepower (349 kW)* STS-V is capable of exceptional performance for an automobile of its size. Each 4.4L Supercharged Northstar V-8 engine is hand assembled to exacting standards at GM’s Performance Build Center in Wixom, Mich., and is built from start to finish by a single expert craftsman. Production is limited to ensure exclusivity in the marketplace.
The engine is paired with the GM Hydra-Matic 6L80 six-speed electronically controlled automatic transmission with driver shift control. This powerful combination enables 0-to-60-mph acceleration in less than five seconds. The STS-V includes numerous chassis enhancements, including massive Brembo brakes with air cooling, larger wheels and tires for better grip and larger front and rear stabilizer bars for better performance.
The interior features extensive use of leather wrapped surfaces, created by craftsmen who cut, wrap and sew leather around components individually. Kinetic aluminum accents adorn the steering wheel and instrument panel. STS-V features deep-tinted Olive Ash Burl wood accenting the center stack and door trim.
All STS models are built at GM’s state-of-the-art Lansing Grand River assembly center in Lansing, Mich.
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