Under the Hood

Available only with rear-wheel drive, the 3.6-liter V-6 engine produces 255 horsepower and 252 pounds-feet of torque. Cadillac's 4.6-liter Northstar V-8 generates 320 hp and 315 pounds-feet of torque and can work with either rear- or all-wheel-drive. All-wheel-drive models have a rear bias torque split. Both engines have variable valve timing and drive a five-speed-automatic transmission with Driver Shift Control for manually selected gear changes. Three final-drive ratios are available for V-8-powered models.

    See also:

    Thigh Support Adjustment
    If available, adjust the manual leg extension by pulling up on the lever, and then pulling or pushing on the support to lengthen or shorten it. Release the lever to lock it in place. ...

    Additional Maintenance and Care
    Your vehicle is an important investment and caring for it properly may help to avoid future costly repairs. To maintain vehicle performance, additional maintenance services may be required. It is ...

    Exterior
    Designed with a chiseled look, the four-door STS features what Cadillac says is a "faster profile" with "more rake" than the CTS. All told, it's considered "more sophistic ...