This is the GM Passlock anti-theft module equipped on 1998-2002 GM Full size vans. These are fully rebuilt using the highest quality components, and FULLY tested in our unique testing equipment. THIS PART FITS: 1998-2002 GMC Savanna, Chevy Express Van, and Chevy C3500 (OLD BODY STYLE) YOU MUST MATCH PART NUMBER 16264975 Lifetime Warranty!