Harsh 2-3 Upshift In "D" Position
Valve body (check balls missing or damaged or TCC shift valve stuck or damaged), incorrectly tightened valve body bolts (cross-leaks), pump assembly or 3-4 clutch assembly.
Valve body (check balls missing or damaged or TCC shift valve stuck or damaged), incorrectly tightened valve body bolts (cross-leaks), pump assembly or 3-4 clutch assembly.