GM is ramping up for a massive assault on next week’s New York Auto Show with planned launches for its HUMMER, Buick and Cadillac labels. The General’s luxury division is set to debut the facelifted version of the 2008 model-year STS sedan, which picks up revised styling, a revamped interior, a new V6, and a host of new safety options.

The most significant change to the outgoing model is the introduction of the new direct inject 3.6L V6 in the base STS. This powerplant delivers a healthy 298hp (222kW) and 268lb-ft. (371Nm) of twist with drive being sent to the rear wheels via GM’s new Hydra-Matic 6L50 six-speed auto. An AWD version is also available. Not only is the new engine significantly more powerful than the old unit, it also achieves a 25% reduction in cold-start hydrocarbon emissions and only a marginal increase in fuel economy despite a 15% increase in power.

Visual differences include a new grille and headlight design plus side air extractors incorporated into the front fenders inspired by Cadillac’s Sixteen concept car of 2003. Other touches include chrome-plated door handles, color-coded bumpers and a set of polished aluminum exhaust tips. Final pricing will be announced closer to the car’s launch date, which is scheduled towards the middle of the year.

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