GMC Sierra Z71 2013 Automatic Gasoline mileage: 1 KM 4WD For sale: Sierra with 6.2 aluminum engine. Full agency body✅ Full agency glass✅ Original bumpers and grille✅ Agency chassis✅ Agency airbags✅ Double differential lock✅ Regarding the engine: 6.2 aluminum with Texas Speed Stage 2 cam installed. Texas Speed double springs. Denali oil pump. LS3 heads, part number 823. The engine was overhauled a little over a year ago, fully checked, and it's in good condition. The car is clean, with modified and heat-insulated spark plug wires. Insulated wiring harness, and it needs nothing✅ It was recently tuned and achieved a very good number. Additions: 40,000 BTU transmission cooler. Motul thermostat. Full air intake system. Volant intake. Blitz filter head. Headers and Y-pipe. Electronic Borla exhaust with its controller. Catch can. Wideband. ABS and airbag bypasses. Wired for Kenwood. Inspected and renewed✅ The engine, praise be to God, is clean and has no smoke or overheating issues. Oil is changed every 2500 kilometers. For offers only. Serious buyers only to save time.