I have 2 Z71 Tahoes, both 4wd models. I know a guy who, surprisingly to me, has a 2WD Z-71 Tahoe that he bought new. I had thought that all Z-71s were 4WD.from what I understand it is basically just a different mostly trim package, 4wd, running boards, shocks, skid plate (however) the skid plate could vary from plastic to aluminum depending.....
there are always different options depending on how it was ordered, tow package, trailer package, heated or heated & cooled, or not heated seats, adjustable or not adjustable pedals etc
power seats, hud or no hud yada yada
my silverado is a z71 but it is also a lt2 and texas package+ dealer add-ons