GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Park Avenue 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Oil Pump Replacement

Removal Procedure
  1. Remove the case side cover. Refer to Control Valve Body Cover Replacement .

    2. Object Number: 97350 Size: SH
  2. Remove the wiring harness as necessary.

    3. Object Number: 97348 Size: SH
  3. Remove the oil pump to valve body bolts.

Installation Procedure

    Object Number: 97352 Size: SH
  1. Install the oil pump to the valve body.

    2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 840842 Size: SH

    Notice: Use a torque wrench to tighten the pump to valve body bolts. Do not exceed the torque specifications.

  2. Install the oil pump to valve body bolts.

    3. Tighten

        • Tighten the valve body bolts (205) to 8 N·m (70 lb in).
        • Tighten the valve body bolts (206) to 16 N·m (123 lb in).
        • Tighten the valve body bolts (207) to 12 N·m (106 lb in).

    Object Number: 97350 Size: SH
  3. Install the wiring harness, if removed.
  4. Install the case side cover. Refer to Control Valve Body Cover Replacement .
  5. Fill the transaxle to the proper level. Refer to Fluid Capacity Specifications .
  6. Inspect the transaxle fluid level. Refer to Transmission Fluid Check .
  7. Inspect for fluid leaks.

    8. 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.

  8. Reset the TAP values. Refer to Transmission Adaptive Functions .