AIR CLEANER HIGH-CAPACITY, LPO WHEEL LOCKS SET OF 4, WHEELS 18" X 8.5" (45.7 CM X 21.6 CM) BRIGHT MACHINED ALUMINUM, REMOTE VEHICLE STARTER SYSTEM, SLE PREFERRED EQUIPMENT GROUP, REAR AXLE 3.42 RATIO, TRANSMISSION 6-SPEED AUTOMATIC ELECTRONICALLY CONTROLLED with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (STD), AUDIO SYSTEM 8" DIAGONAL COLOR TOUCH SCREEN WITH GMC INFOTAINMENT SYSTEM AM/FM/SIRIUSXM HD RADIO with USB ports auxiliary jack Bluetooth streaming audio for music and most phones Pandora Internet radio and voice-activated technology for radio and phone (STD), UNDERBODY SHIELD TRANSFER CASE PROTECTION, HILL DESCENT CONTROL, SLE VALUE PACKAGE includes