GMC Sierra 2013 Automatic mileage: 1 KM 4WD Peace, mercy, and blessings of God be upon you. I am offering my GMC Sierra, fully loaded, with a rotary shifter, 6-speed. The engine is sound, no lifter issues, and it has not been opened. The transmission was changed 5 months ago due to the torque converter, due to negligence from the previous owner. The entire transmission was replaced at a high cost. The chassis is sound. The car is, ماشاءالله (Masha'Allah - what God has willed), solid with no noise or rattling. The body, I am unaware of it, it has scattered paintwork. Mileage: 435,000 km. The car is for sale by offer. The car has modifications: a full Batman cat-back exhaust system with a one-year warranty laser muffler, and a rare 3-inch "Y-pipe" made of aluminum, designed to handle the heat. Full programming includes: Increasing torque + spark timing adjustment + air-fuel ratio adjustment + throttle response improvement + knock sensor sensitivity adjustment + disabling oxygen sensors and catalytic converter sensors (exhaust sensors) + opening RPM limit and adjusting cut-off points + fuel economy programming + programming for electrical packages and cut-offs + adjusting transmission gear shifts (shift points, gear change speed, and delay) + fan programming + speed limiter removal programming.