2009 GMC Topkick Horns
- Dorman®TECHoice™ Horn ConnectorGMC Topkick 2009, TECHoice™ Horn Connector by Dorman®. With Leads. Looking to maintain the top condition of your electrical system? Dorman is ready to help you! Just choose from their immense selection of premium replacement...Direct replacement for a proper fitDurable metal construction$17.99