New GM Transgo Shift Kit SK 4T65E FIX Codes P1811 P0741 Valve Body 1997-On. Fits General Motors 4T65E 1997-2008 "Includes Volvo 4T65E" NOTE: Have a Tip Tronic unit, Kit will work except for Boost Valve assembly. More Info Call Us 626-443-7451. Includes New Boost Valve assembly, New 3rd clutch seal, New better Servo Seal, New accumulator springs and spacers. Vital rebuild technical Information and other items which improve overall drivability and durability. Prevents long shifts and hard shifts, chatter on acceleration, no 4th, or lock-up. Addresses Codes P1811 & P0741. Convenient drop in valves, No special tooling or machining necessary!