Our remanufactured Transfer Case Control Module is engineered from new replacement parts and renewed parts for optimal performance. It provides an environmentally friendly alternative to buying new. Product Features:Restores the ability to shift in and out of four-wheel drive (4WD)Shuts off four-wheel drive (4WD) warning lightPlug and play for easy, economical installation: no programming requiredFully remanufactured and vehicle simulator- tested for quality assurance