Tools Required

J 36850 Transjel

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the transmission oil pan and the filter. Refer to Automatic Transmission Fluid and Filter Replacement



3. Remove the reverse boost valve bushing retainer ring (2).



4. Remove the following from the reverse boost valve cylinder:

•	The reverse boost valve bushing

•	The reverse boost valve

•	The pressure regulator spring retainer

•	The pressure regulator spring

•	The pressure regulator valve

•	The reverse boost valve bushing

1. Install the pressure regulator valve with J 36850 .



2. Pre-assemble the following parts:

•	The reverse boost valve bushing

•	A new reverse boost valve

•	A new pressure regulator spring retainer

•	The added isolator pressure regulator spring

•	The pressure regulator spring

3. Install the pre-assembled parts into the pump bore.



4. Install the reverse boost valve bushing retainer ring (2) while holding the reverse boost valve bushing in place.

Ensure the retainer ring is in the groove.

5. Install the transmission oil pan and the oil filter. Refer to Automatic Transmission Fluid and Filter Replacement .
6. Lower the vehicle.

Important: It is recommended that 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 TAP values. Transmission performance may be affected as new TAP values are learned.
7. Reset the TAP values. Refer to Adapt Function .