From Chevrolet Press: The 2009 Chevrolet Traverse is a crossover that gives customers people-hauling and cargo-carrying capability typically found in larger SUVs – all delivered with better-than-expected efficiency, thanks to a new 3.6L V-6 with direct injection technology. The all-new, 2009 Traverse is offered in LS, LT and LTZ models, in both front-wheel-drive and all-wheel-drive configurations.
The 3.6L engine's direct injection technology helps produce power similar to many V-8 engines and uses regular unleaded gasoline. The Traverse is rated at 288 horsepower (215 kW)* and 270 lb.-ft. of torque (366 Nm)* with dual exhaust (281 hp/210 kW* and 266 lb.-ft./361 Nm* with single exhaust) - but delivers better-than-expected fuel economy. Ninety percent of the engine's peak torque is available from approximately 2,500 rpm to more than 6,000 rpm.
With direct injection, fuel is sprayed directly into the engine cylinder, where it is mixed with air. As the fuel vaporizes in the cylinder, the air and fuel mixture is cooled. This enables the use of a higher compression ratio in the combustion chamber, which improves engine performance and efficiency. Less fuel is required to produce the equivalent horsepower – particularly at normal cruising speeds – of a conventional, port-injection system. Also, the use of unique pistons with the direct-injection system helps reduce cold-start emissions by up to 25 percent.
The 3.6L engine is mated to the Hydra-Matic 6T75 six-speed automatic transmission, an advanced transmission with clutch-to-clutch shift operation for front- and all-wheel-drive vehicles. The available intelligent all-wheel-drive (AWD) system provides increased traction on slippery roads by actively managing the torque distribution between the front and rear axles, based on factors such as wheel speed, throttle and surface conditions. There is no driver intervention; the system automatically decides how much torque to apply and delivers it to the wheels that have the best traction.