The Cadillac STS is a mid-sized luxury 4-door sedan manufactured and sold by General Motors from 2004 to 2011 for the 2005 to 2011 model years. A version of the STS was sold in China as the SLS through 2013. It was equipped with a six-speed automatic transmission with performance algorithm shifting and driver shift control.
Origins
The STS was the successor to the Cadillac Seville, which beginning in 1987 was available as an upscale performance-oriented STS version, and comfort-oriented SLS. The next year, the STS received Cadillac's then-new Northstar System, including the aluminium DOHCL37Northstar V8 engine. While smaller than the full-size DTS, the more expensive STS was the flagship sedan of the Cadillac brand.
The front wheel drive Seville model name was retired in 2004, succeeded by an entirely new "STS" based on the rear wheel driveGM Sigma platform. The first Cadillac sedan to be offered with All wheel drive, it retained the Seville's high-performance Magnetic Ride Control suspension. The Cadillac STS was assembled at GM's Lansing Grand River facility in Lansing, Michigan along with the smaller CTS sedan. Available engines were a 3.6 L High Feature LY7V6 with and and the 4.6 L Northstar LH2V8 which puts out and in the STS. All engine models feature dual overhead camshafts with variable valve timing. Remote ignition is standard. Overall length was down 5" to 196.3", yet wheelbase grew by 4" to, resulting in increased interior space. A heads-up display was optional, as was a 300-watt Bose stereo system with MP3 capability. Base pricing at launch ranged from US$40,575 for the V6 model to US$47,025 for the V8.
2008-2011
The STS was updated for 2008. Changes included a refreshed exterior, with styling cues resembling the 2008 CTS, such as larger, more aggressive grille and chrome fender vents. The interior was updated, with new materials and a new steering wheel, though the overall interior design remained the same, despite previous rumors of an all-new interior similar to that of the Chinese-market SLS. The standard powertrain was a direct-injected 3.6 L V6 mated to a six-speed automatic transmission, which in the STS produced and of torque. It also offered enhanced safety features, including a lane departure warning system developed by Mobileye, a blind spot monitoring system, and an improved version of GM's StabiliTrakstability control system, which could operate the steering system in addition to the brakes to help correct a skid. Additionally, options previously limited to the V8 model were available with the V6. The 2008 Cadillac STS debuted at the 2007 New York Auto Show. A 2010 update for the STS removed the GM badges, although early 2010 models still retained GM badging. For 2011, the V8 was dropped from the Cadillac STS lineup.
The 2006 V-series STS-V was introduced at the 2005 Detroit Auto Show. It features a supercharged 4.4 L version of the Northstar V8, along with handling upgrades. This engine is certified by the SAE to produce and. The model was discontinued in 2009.
The Chinese market received the Cadillac SLS in November 2006 for the 2007 model year. It was assembled by Shanghai GM. Compared to the STS, the SLS has a longer wheelbase, unique interior appointments, and a near-identical exterior appearance. Engine choices included the 2.8-liter LP1 V-6, 3.6 LY7 V-6 and the 4.6-liter Northstar V-8 as in the STS V-8 from 2007 to 2009. The 3.6 liter LLT engine was available from 2010 to 2011 until it was replaced by the 2.0 liter LDK and the 3.0 liter LF1 V6 for 2011 to 2013 models. The Chinese-Spec SLS received a facelift at the end of 2009, and was sold as a 2010 model year. The grille, bumper and many other details were revised. The SLS was priced from 448,000RMB to 698,000RMB. GM discontinued the production of the SLS in February 2013.
Yearly American sales
Successor
The final STS was assembled on May 4, 2011. The enlarged third generation rear-wheel drive CTS sedan introduced in 2013 as a 2014 model, similar in size and price to the STS, effectively succeeded it.
