ALTERNATOR, 220 AMP AUDIO SYSTEM, 13.4" DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE EMISSIONS, FEDERAL REQUIREMENTS ENGINE BLOCK HEATER EXHAUST BRAKE JET BLACK WITH KALAHARI ACCENTS, PERFORATED FRONT LEATHER SEAT TRIM REAR AXLE, 3.42 RATIO SEATS, FRONT BUCKET TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL WHEELS, 20" (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS WINTER GRILLE COVER