Sierra 1500 2WD V6-4.3L VIN X (2004)
Band Apply Servo: Service and Repair
Automatic Transmission - 4L80-E/4L85-E
Reverse Servo Replacement
Reverse Servo Replacement
Removal Procedure
1. Remove the transmission filter.
2. Remove the rear servo from the transmission case in the following order:
1. Cover bolts (6)
2. Cover (5)
3. Cover gasket (4)
4. Bottom retaining clip (3)
5. Servo piston (2)
6. Outer ring oil seal (1)
7. Inner ring oil seal (7)
8. Accumulator piston (8)
9. Piston seal (9)
10. Washer (10)
11. Servo spring (11)
12. Servo spring retainer (12)
13. Selective pin (13)
14. Accumulator spring (14)
Installation Procedure
1. Install the rear servo to the transmission in the following order:
1. Accumulator spring (14)
2. Selective pin (13)
3. Servo spring retainer (12)
4. Servo spring (11)
5. Washer (10)
6. Piston seal (9)
7. Accumulator piston (8)
8. Inner ring oil seal (7)
9. Outer ring oil seal (1)
10. Servo piston (2)