The 2019 Chevrolet Silverado 1500: Work Truck (WT), Custom, Custom Trail Boss, LT, RST, LT Trail Boss, LTZ and High Country. The base WT include 17-inch steel wheels, air conditioning, a tilt-only steering column, a 7-inch touchscreen interface, Bluetooth. Custom trim level that adds 20-inch wheels, front tow hooks, power and heated mirrors, deep-tinted glass, cruise control and remote entry. Above the Custom is the Custom Trail Boss trim level, which is four-wheel-drive only and has 18-inch black wheels, a trailering package and the Z71 off-road suspension package. LT adds tailgate damper, alloy wheels, a steering wheel with audio controls, an upgraded driver information display, OnStar with 4G LTE and Wi-Fi, and an 8-inch touchscreen.