Fits General Motors 5L40E 1999-2006 Cadillac and BMW Refill Kit for Actuator Feed Limit Valve Repair and Pressure Regulator Valve repair kit 5L4-ACT-VL. This is a Refill Kit and contains parts only for the repair of (5) units. Fixes wrong gear starts, slip in 4th, 5th, and 6th. Improves and restores correct drivability with added durability. Installation recommendation: Experienced technician Transmission removal necessary: Actuator Valve repair does not require transmission removal. Pressure regulator valve replacement requires transmission removal.