GMC Sierra SLE 2008 Automatic Gasoline mileage: 1 KM GMC Sierra 2008 - Without 4WD Mileage: 500 thousand It has programming from the previous owner (disconnected and RPM unlocked), Electronic Corsa exhaust and Y-pipe, on the agency outlet. The agency exhaust and Y-pipe are available with the car. Installed a Trucool 40k transmission cooler And changed the thermostat to a sports one (without programming).