How to Service and Repair the Oil Pump on 2003 Buick Century?

Remove the case side cover. Disconnect electrical connectors from solenoid valves, TFP switch and temperature sensor without removing the bolt holding the pump. Take out oil pump bolts and remove pump from valve body. Reinstall pump and bolts to specification, reconnect connectors, and refit case side cover.

OEM 2003 Buick Century Oil Pump

Oil Fluid Pump

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2003 Buick Century Water Pump Part Number: 89060444
Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump
- Replaces: 10229785, 12593581
- Item Weight: 3.40 Pounds
- Item Dimensions: 7.1 x 4.4 x 4.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89060444
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Buick Century Submodels:
- Custom, Limited, Special, Special Edition | 6 Cyl 3.1 L GAS

2003 Buick Century Oil Pump

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2003 Buick Century Oil Pump Parts and Q&A

Q: How to Service and Repair the Oil Pump on 2003 Buick Century?
A: Remove the case side cover. Disconnect electrical connectors from solenoid valves, TFP switch and temperature sensor without removing the bolt holding the pump. Take out oil pump bolts and remove pump from valve body. Reinstall pump and bolts to specification, reconnect connectors, and refit case side cover.