gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Turbo Hydra-Matic 4L80-E & 4L80-Ehd|Page 6595 > < A/T - 2-4 Band, TCC Solenoid, 3-4 Clutch Friction/Plates|Page 6590
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Band Apply Servo: Service and Repair
Turbo Hydra-Matic 4L80-E & 4L80-Ehd

Front

1. Drain and remove oil pan, then filter and gasket.
2. Remove control valve assembly as described under "Control Valve Assembly, Replace."

Fig.12 Front Servo Assembly

3. Remove front servo piston, piston pin, washer, spring retainer and piston spring, Fig. 12.
4. Reverse procedure to install.

Rear

1. Drain and remove oil pan, then filter and gasket.

Turbo Hydra-Matic 4L80-E & 4L80-Ehd|Page 6595 > < A/T - 2-4 Band, TCC Solenoid, 3-4 Clutch Friction/Plates|Page 6590