For 1990-2009 cars only
Removal Procedure
- Remove the transmission oil pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement .
- Compress and hold the reverse boost valve sleeve into the bore of the oil pump to release tension on the reverse boost valve retaining ring.
- Remove the reverse boost valve retaining ring, then slowly release tension on the reverse boost valve sleeve.
- Remove the following from the oil pump:
| 4.1. | The reverse boost valve sleeve (5). |
| 4.2. | The reverse boost valve (4). |
| 4.3. | The pressure regulator isolator spring (3). |
| 4.4. | The pressure regulator valve spring (2). |
| 4.5. | The pressure regulator valve (1). |
Installation Procedure
- Install the following into the oil pump:
- Compress and hold the reverse boost valve sleeve into the bore of the oil pump to expose the retaining ring slot.
- Install the reverse boost valve retaining ring, then slowly release tension on the reverse boost valve sleeve.
- Install the transmission oil filter and pan. Refer to Automatic Transmission Fluid and Filter Replacement .
- Reset the TAP values. Refer to Transmission Adaptive Functions .
| 1.1. | The pressure regulator valve (1). |
| 1.2. | The pressure regulator valve spring (2). |
| 1.3. | The pressure regulator isolator spring (3). |
| 1.4. | The reverse boost valve (4). |
| 1.5. | The reverse boost valve sleeve (5). |
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.