The 2015 GMC Sierra comes with 17-inch steel wheels, chrome bumpers and grille, air-conditioning, cruise control, power windows and door locks, a tilt steering wheel, cloth upholstery, rubber floor covering, a 40/20/40-split front bench seat. The SLE adds stainless steel finish wheels, deep-tint glass, an "E-Z" lift/lower tailgate, LED cargo box lighting, power/heated mirrors, keyless entry, a rearview camera, Bluetooth phone and audio connectivity, adjustable driver lumbar support, a leather-wrapped steering wheel with audio controls. The SLT adds chrome trim, 18-inch alloy wheels, remote starting, power folding mirrors, a trailer towing package, universal garage opener, an anti-theft system, a rear window defroster, a tilt-and-telescoping steering wheel, power-adjustable pedals, an auto-dimming rearview mirror, a 110-volt power outlet, dual-zone automatic climate control, leather upholstery, heated eight-way power driver and passenger front seats and driver-seat memory settings.