Turbo Hydra-Matic 4L80-E & 4L80-Ehd

Fig. 4 Transmission Wiring & Connectors:

Fig. 5 Control Valve Assembly:

Removal
1. Drain and remove oil pan and remove filter and gasket.
2. Disconnect electrical connectors at valve body, Fig. 4.
3. Remove bolts from valve body assembly, manual detent spring and roller assembly, Fig. 5. Ensure five 0-rings are attached to pressure manifold assembly.
4. Remove pressure manifold assembly.
5. Remove wiring clips, fluid level indicator stop, lube pipe, lube pipe retainer and clamps.
6. Remove control valve assembly including accumulator housing assembly, valve body gaskets, spacer plate and accumulator gasket.
7. Remove the eight check balls from case passages.
8. Remove two speed sensors and bracket assemblies and PWM solenoid screen.

Fig. 6 Check Ball Location:

Installation
1. Install the eight check balls in proper location in passages, Fig. 6.
2. Install gasket spacer plate to case.
3. Install complete valve body assembly onto case using guide pin set J-25025-B.
4. Install pressure manifold onto valve body assembly with spring and roller assembly in place.
5. Install wiring clip, then fluid indicator stop.
6. Install control valve body assembly retaining bolts.
7. Connect wiring harness to connectors. Install large end into case first.
8. Install lube pipe long end into case.
9. Install lube pipe clip with short bolt and tighten to specifications.
10. Tighten valve body bolts specifications.
11. Install filter, then pan and replenish fluid.