4T60/THM 440T4 84-up FEATURES: Tripack (Fixes 3 units) Corrects/Prevents/Reduces: 2nd clutch failure; slide-bump 1-2; 2nd gear starts; rough 1-2; reverse slide-bang; 3rd clutch failure; 3-2 kickdown bindup; kickdown runaway; converter shudder; 4th clutch failure; burned 1-2 band; coast downshift clunk; 4-3 bang; soft lockup; no upshift. Special Instructions: Requires transmission removal and professional installation.