2007 Chevrolet TrailBlazer LT 4dr SUV (4.2L 6cyl 4A)
In Sept. 2007, I traded in a Ford Taurus SES for a 3LT Trailblazer with the 5.3L V8. I drove the SS, and even though the acceleration and handling were impressive, the fuel consumption made me rethink. I then drove a 4.2L I6, but just after driving the SS, it seemed lacking. As the 5.3L gets the same mileage as the 4.2, I went on the look for one. Not a lot more power than the 4.2, but a lot more torque makes for effortless acceleration and quiet cruising. A highway trip today yielded 24.6 mpg with the cruise control set 4 mph over the limit. rides smooth, seats are comfy, and you can beat Lexus LX 470's and GX 470's all day long, as there are no external V8 identification badges.
5.3L V8, memory heated seats, tight turning radius, Bose stereo, smooth ride, quiet interior, solid construction, mechanical reliability, interior space, excellent brakes, quick acceleration with Active Fuel Management to save fuel.
As it has been discontinued, any suggested improvements is moot.