Replacement NSBU connector set with 6" pigtail for 2001-2004 GM trucks equipped with Allison Transmission. Includes heat-sealable butt-style connectors. Produced in-house, our manufacturing process includes fully automated wire cutting and terminal crimping to ensure you get the highest quality replacement parts you need to get your truck back on the road quickly. Application Notes Fits 2001-2004 GM vans and trucks with the Allison 1000/2000 Series transmission