Suspension Package, Handling/Trailering, heavy-duty (3/4 ton models only.)
4-wheel drive
Transfer case, active, 2-speed electronic Autotrac with rotary controls, includes neutral position for dinghy towing. (Requires 4WD models. Included with (K5L) heavy-duty trailering package or 3/4 ton models.)
Battery, heavy-duty 600 cold-cranking amps, maintenance-free with rundown protection and retained accessory power