This Shift Kit fits any 1993 and up 4L60E and the later 4L65E transmissions. Designed for many uses. Competition Muscle Cars, Towing, Heavy Duty Service Vehicles, Rally, etc. This kit can be installed without taking the transmission out of the car. This TransGo 4L60EHD2 will correct many inherent problems and extend the life of your transmission by correcting gear 2-3 shift over lap and 2-3 shift slippage. This kit also includes the heavy duty upgrade PWM eliminator valve. This upgrade will dramatically increase the torque converter clutch life. Comes with Duraprene (fiber) pan gasket, and no special tools are required for installation. TRANSGO is the number one name in Shift kits and this is the number one kit for the 4L60E in Heavy Duty and Racing applications, or the performance minded daily driver.