The feature list on the 2022 Sierra 3500HD varies between basic workhorse and decked-out luxury-barge. Standard features on the base model include LED daytime running lights, a locking tailgate, a four-way manually adjustable driver’s seat,and single-zone climate control. The hardcore AT4 truck gets 18-inch alloy wheels with 18-inch LT275/70R18E all-terrain, Blackwall tires. The SLE gets cruise control, a compass, and carpeted floor covering. The SLT dual-zone climate control, ten-way power adjustable front seats, and both 12- and 120-volt power outlets. The interior of the AT4 includes 4G LTE Wi-Fi connectivity, heated and ventilated front seats, and heated outboard rear passenger seats. If you’re looking for a truly premium experience, then the only way to go is Denali: this top-spec trim gets chrome door handles, IntelliBeam auto headlights, and a Bose premium audio system, as well as driver-assistance features like forward-collision assist, and lane-departure warning.