ubscription) U2L - High Definition Radio Rec=ption U42 - Entertainment System, Rear Seat </=r> UDS - Parking Assist, Front & Rear Sensors <=r>UE1 OnStar Communication System UEU=- Sensor, Forward Collision Alert UFG - Sensor, Re=r Cross Traffic Alert UG1 - Homelink Garage Door O=ener UHX - Lane Keep Assist/Departure W