Get accessories for your programmer or tuner and add functionality to the OBDII port on your 2007.5-2010 Chevy/GMC 6.6L LMM Duramax with the OBDII Splitters & Accessories available. Accessories like extension cables for tuners, programmers, or modules and OBDII covers are available for a variety of applications. OBDII Splitters allow you to easily add multiple electronic accessories that use the OBDII port on your vehicle. Shop today at XDP and find OBDII Splitters & Accessories from brands including Bully Dog Technologies, Diablosport, SCT, and many more!