The most widely used original equipment supplier for General Motors is AC Delco, one of their many subsidiaries. It gets its name from Albert Champion (the founder of AC Flint) and Dayton Engineering Laboratories Company (United Delco). Repairing a Chevrolet, Buick, Cadillac, or GMC vehicle will likely involve one or more parts from this manufacturer. They offer a diverse collection of product lines such as brake parts, air & oil filters, drive & serpentine belts, and HVAC parts... just to name a few. Backed by a worldwide network of dealers and certified mechanics, AC Delco provides excellent support for customer who chose their parts.
Replacing your door window switch means you can raise and lower your window glass on demand; a convenience sorely missed when it is broken.