This listing is for part number 12574270 ECM that is programmed/flashed for your vehicle with the newest updates from GM using your VIN to match your vehicle. After you purchase the ECM you will need to provide us with your VIN so we can program the ECM before we ship it to you. This computer is used and came from a salvaged vehicle. This computer will fit these part numbers: 12574270 12583185
This part will fit these makes and models with these options
ION 03 Electronic Control Module