Oil Pump Replacement for Buick LeSabre 2003

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



2. Remove the wiring harness as necessary.



3. Remove the oil pump to valve body bolts.

1. Install the oil pump to the valve body.

Notice: Refer to Fastener Notice in the Preface section.





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.

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).




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.

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 .