2001-2009 GMC Sierra 3500HD - Trailer Wiring Kit (Adds 4-Flat to OE 7-Way)
- Brand: Curt MFG
- Part #: 55384
- Fits Following Model:
- GMC Sierra 3500HD
- Fits Following Years:
- 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
