I'm looking at the new cheverolet durmax to pull my fifth wheel. Do I really need the 4WD or should I go with the 2WD. If I go with the 4WD is the mpg a big difference and does the 4WD effective the...
a couple of reasons i have 4x4. pull a heavy boat and need 4 w d to ge up slick boat ramps once in a while.
boon dock with T H and like to shift into low 4 wd on some forest service roads and 2 tracts. not for traction, but sometimes to crepe along very slowly at idle.
nice to have here in co for snow and icy roads too