Control your torque converter from the palm of your hand with the AlliLocker(tm) from Fleece Performance Engineering. The AlliLocker(tm) is 100% code free and allows you to bypass the TCM to lock/unlock the torque converter on demand. Turn the bypass switch off, and the TCM regains control of the torque converter clutch. WARNING: This product is intended for closed course race use only. Do NOT use on public roadways. WARNING: Always disengage the bypass switch and unlatch the lock switch when not in use.

This Part Fits:

Year	Make	Model	Submodel
2001-2005	Chevrolet	Silverado 2500 HD	Base
2015-2016	Chevrolet	Silverado 2500 HD	High Country
2001-2006	Chevrolet	Silverado 2500 HD	LS
2001-2016	Chevrolet	Silverado 2500 HD	LT
2007-2016	Chevrolet	Silverado 2500 HD	LTZ
2004-2016	Chevrolet	Silverado 2500 HD	WT
2007	Chevrolet	Silverado 2500 HD Classic	LS
2007	Chevrolet	Silverado 2500 HD Classic	LT
2007	Chevrolet	Silverado 2500 HD Classic	WT
2001-2005	Chevrolet	Silverado 3500	Base
2001-2006	Chevrolet	Silverado 3500	LS
2001-2006	Chevrolet	Silverado 3500	LT
2004,2006	Chevrolet	Silverado 3500	WT
2007	Chevrolet	Silverado 3500 Classic	LS
2007	Chevrolet	Silverado 3500 Classic	LT
2007	Chevrolet	Silverado 3500 Classic	WT
2015-2016	Chevrolet	Silverado 3500 HD	High Country
2007-2016	Chevrolet	Silverado 3500 HD	LT
2007-2016	Chevrolet	Silverado 3500 HD	LTZ
2007-2016	Chevrolet	Silverado 3500 HD	WT
2002-2005,2015-2016	GMC	Sierra 2500 HD	Base
2011-2016	GMC	Sierra 2500 HD	Denali
2001-2002,2006	GMC	Sierra 2500 HD	SL
2001-2016	GMC	Sierra 2500 HD	SLE
2001-2016	GMC	Sierra 2500 HD	SLT
2003-2014	GMC	Sierra 2500 HD	WT
2007	GMC	Sierra 2500 HD Classic	SL
2007	GMC	Sierra 2500 HD Classic	SLE
2007	GMC	Sierra 2500 HD Classic	SLT
2007	GMC	Sierra 2500 HD Classic	WT
2002-2005	GMC	Sierra 3500	Base
2001-2002,2006	GMC	Sierra 3500	SL
2001-2006	GMC	Sierra 3500	SLE
2001-2006	GMC	Sierra 3500	SLT
2004-2006	GMC	Sierra 3500	WT
2007	GMC	Sierra 3500 Classic	SL
2007	GMC	Sierra 3500 Classic	SLE
2007	GMC	Sierra 3500 Classic	SLT
2007	GMC	Sierra 3500 Classic	WT
2015-2016	GMC	Sierra 3500 HD	Base
2011-2016	GMC	Sierra 3500 HD	Denali
2007-2016	GMC	Sierra 3500 HD	SLE
2007-2016	GMC	Sierra 3500 HD	SLT
2007-2014	GMC	Sierra 3500 HD	WT