The LT is the second trim tier for the Impala sedan, which is further segmented into three levels: LT1, LT2, and LT3.  Each level signifies the addition of more options.  This is the most well-equipped LT model.  Standard features on this trim include dual-zone climate control, a remote starter, 17-inch alloy wheels, a CD changer, leather seats, heated front seats and XM satellite radio.  A larger 3.9 liter V-6, which makes 233 horsepower is available to replace the standard 3.5 liter, 211 horsepower unit.