Harsh 3-4 Upshift In "D" Position
Valve body (TCC shift valve stuck or damaged), incorrectly tightened valve body bolts (cross-leaks), 1-2 accumulator assembly, pump assembly, 2-4 band and servo or coasting clutch assembly. See Figure.
Valve body (TCC shift valve stuck or damaged), incorrectly tightened valve body bolts (cross-leaks), 1-2 accumulator assembly, pump assembly, 2-4 band and servo or coasting clutch assembly. See Figure.