The LT is the mid-level trim for the 2007 Suburban, and further divided into three tiers: LT1, LT2, and LT3.  The tiers are differentiated from one another by the addition of more features.  The LT3 is the top tier for this trim, complete with all of the LT2 features plus heated front seats, XM Satellite radio, and a Bose audio system.  The six-way power driver's seat has also been upgraded to a 12-way.  This 2WD model receives 340 horsepower from the 5.3 liter V-8, which allows drivers to haul up to 8000 pounds.