1999 2001 2002 2003 2004 2005 2006 2007 dome lamp cargo led light reverse mod silverado sierra gm duramax

Dual Function Dome and Reverse Module (2003-2007 Classic GM Trucks)

$ 19.95

This will get the side lights on your Silverado or Sierra tow mirror to work as both a dome light and a reverse lamp. This is ideal because the light can work as approach lighting when unlocking the truck, but also as a reverse lamp.

The video below will go over how to wire it in.