How do i determine towing capacity on 2012 Suburban 1500? specs show it could be 5700# or 8100#. I have RPO codes but they don't identify towing capacity.
are these RPO codes relevant?: GU4=axel,rear,3.08 ratio; VR4=trailer hitch(weight
distributing platform)eqlzr hitch; Z82=trailering package(special)(reese type hitch)provision
for HD trailer equip