Accumulator Assembly, Spacer Plate, and Gaskets for Chevrolet Tahoe - 4WD 2000

Tools Required

1. Remove the accumulator cover bolts.
2. Remove the 1-2 accumulator cover and pin, piston, and springs.



3. Remove the 1-2 accumulator inner (3) and outer (2) piston spring.
4. Remove the 1-2 accumulator piston (1).



5. Remove the 1-2 accumulator piston oil seal ring (1) from the 1-2 accumulator piston (2).



6. If required, remove the checkball (1) from the valve body (2).



7. Remove the oil pass cover bolts.
8. Remove the oil pass cover.



9. Remove the spacer plate, case gasket, and valve body gasket from the valve body.



10. Check the solenoid screens (1 and 2) on the spacer plate for damage or debris.

Replace the solenoid screens if necessary.




11. Remove the 3-4 accumulator spring (1) from the valve body (3).
12. Remove the 3-4 accumulator piston (2) from the valve body (3).
13. Remove the accumulator pin (4) from the valve body (3).



14. Remove the 3-4 accumulator piston oil ring seal from the 3-4 accumulator piston (2).
15. Remove the remaining control valve body if required. Refer to Valve Body .

1. Ensure the upper half of the control valve body is installed. Refer to Valve Body .



2. Install the 3-4 accumulator piston oil ring seal (1) onto the 3-4 accumulator piston (2).



3. Install the 3-4 accumulator pin (4) into the valve body (3).
4. Install the 3-4 accumulator piston (2) onto the pin (4).
5. Install the 3-4 accumulator piston spring (1).



6. Install the checkball (1) into the valve body (2).

Use a small amount of J 36850 in order to keep the checkball in the valve body.




7. Install the J 25025-5 into the valve body.
8. Install the case gasket (3) and the valve body gasket (1) to the spacer plate (2). The case gasket is identified by a C. The valve body gasket is identified by a V.
9. Use the J 36850 in order to retain the gaskets (3) to the spacer plate (2).
10. Install the spacer plate and the gaskets to the transmission case.

Notice: Refer to Fastener Notice in the Preface section.




11. Install the oil pass cover and the oil pass cover bolts.

Tighten
Tighten the bolts to 11 N·m (8 lb ft).




12. Install the 1-2 accumulator piston oil ring seal (1) onto the 1-2 accumulator piston (2).



13. Install the 1-2 accumulator inner (3) and outer (2) springs into the accumulator housing (4).
14. Install the 1-2 accumulator piston (1).



15. Install the 1-2 accumulator cover and the cover bolts.

Tighten
Tighten the bolts to 11 N·m (8 lb ft).

16. Remove the J 25025-5 from the valve body.
17. Install the remainder of the valve body. Refer to Valve Body .

Important: It is recommended that the transmission adaptive pressure (TAP) information be reset.

Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the ECM, PCM or TCM will need to relearn the TAP values. Transmission performance may be affected as new TAP values are learned,
18. Reset the TAP values. Refer to Adapt Function .