try ing to decide on a tow rig for a 5000# 5er that has a gvwr of 8100#. I like the 1/2 ton Chevy Z71 with the HD suspension and 5.3L/4.10 gears. I also obviously like the 2500 HD with the disel. Does anybody have advice on if the 1/2 ton can do it SAFELY. I only tow about 4-6 times a year and only over a couple of passes. Longest trip is 4hrs and all others are about 2hrs mostly flat. Please Help. Thanks Alot.