

This kit can be installed in 2001 to 2005 vehicles with the Allison five-speed transmission, however, using this kit with these first design earlier five-speeds will not provide the 111% increase in torque capacity needed for 4th and 5th gear. Note : The five-speeds have an external MLP switch, while the six-speeds have an internal MLP switch. This TransGo Allison-Jr SHIFT KIT® Valve Body Repair Kit fits 2005 to 2010 General Motors vehicles equipped with the Allison 1000, 20 six-speed automatic transmission.
