The Sierra has three cab configurations – regular, extended, crew – and five trims – Work Truck (WT), SLE1, SLE2, SLT and Denali. All come with either two-wheel-drive (2WD) or four-wheel-drive (4WD), and bed choices range from short (5 ft. 8 in.) to standard (6 ft. 6 in.) and long (8 ft.). There are two interiors. Pure Pickup in WT and both SLE trims features larger knobs and handles; Luxury for the SLT, the same as what's found inside GM SUVs. Cloth seats are standard on WT/SLE models with leather available on SLT trims. Sierra SLTs come with a chrome front bumper and a heated, 12-way, power leather driver’s seat. A lockable in-seat storage bin built into the new 40/20/40-split rear bench is large enough to store a laptop.