2007 Chevrolet Suburban LT 1500 4dr SUV 4WD (5.3L 8cyl 4A)
Here are two updates: First, I never get better than 12/15 miles per gallon city/highway. Second and more importantly, I found the first flaw on this truck. After not being able to start the truck twice because of a run- down battery, I learned from a Chevy dealer that, because of all the lights and electric accessories in the LTZ version, you need to drive 30 minutes to recharge the battery. Mind you, this is not an issue of running accessories with the engine off. This is getting in and out of the truck and perhaps opening and closing the electric rear gate before taking your five minute drive to and from the train station every weekday. After a while the battery is dead.
I still agree 100% with my raving review posted here last year (see below). Outstanding build quality, great design, potent engine, long both on "sport" and "utility", overall a terrific truck!