How to replace the oil pump on Buick LaCrosse?

You should begin by taking off the case side cover when replacing the Oil Pump. After that, use a flat-bladed tool to remove the electrical connectors from solenoid valves (315A, 315B, 322, 334, and 440), the tfp manual valve position switch (395), and the temperature sensor (391), being careful not to remove bolt (205). After that, take out the Oil Pump bolts (206, 207) and lift the Oil Pump (200) off the Valve Body (300). Put the Oil Pump (200) onto the Valve Body (300), then fasten Oil Pump bolts (206, 207), with m6 x 1 after putting all the electrical connectors back onto the solenoid valves (315a, 315b, 322, 334, and tap information should be reset with a scan tool to remove all cell values, causing the ecm, pcm, or tcm to relearn tap, which may affect the way the transmission performs. Finally, reset the tap values.

How to Service and Repair the Oil Pump on Buick LaCrosse?

Begin by taking out the case side cover to start the Oil Pump replacement process. Disconnect solenoid valves (315A/315B/322/334/440) tfp manual valve position switch (395) and temperature sensor (391) connections using a flat-tooth tool while keeping bolt (205) that binds Oil Pump pieces intact. After unplugging all electrical connectors attach to the Oil Pump you should now remove the Oil Pump bolts (206, 207). Once freed securely pull out the Oil Pump (200) from Valve Body (300). .align the Oil Pump (200) with Valve Body (300) openings before inserting Oil Pump bolts (206, 207). Secure the m6 x 1.0 x 85 bolts (207) to 12 nm torque level and the m6 x 1.0 x 95 bolts (206) to 16 nm torque level. Rejoin electrical wires to the control valves beginning with 440 at solenoid 315a while closing with temperature probe 391 and valve position switch 395.

OEM Buick LaCrosse Oil Pump

Oil Fluid Pump

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Buick LaCrosse Water Pump Part Number: 12640448
$134.98 MSRP: $229.80
You Save: $94.82 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump, Oil; Oil Pump; Pump, Engine Oil Pump
- Replaces: 12590152, 12584298, 12590016
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016, 2005-2008 Buick LaCrosse | Base, Convenience, CX, CXL, CXS, Leather, Premium, Sport Touring, Touring | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Oil Pump Part Number: 12710304
$131.18 MSRP: $223.33
You Save: $92.15 (42%)
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Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaces: 12612289
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
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Buick LaCrosse Oil Pump Part Number: 12696174
$338.32 MSRP: $537.02
You Save: $198.70 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaced by: 12741263
- Replaces: 12683664, 12687893, 12668981, 12666625
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 Buick LaCrosse | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
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Buick LaCrosse Oil Pump Part Number: 12674460
$118.10 MSRP: $201.05
You Save: $82.95 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaces: 12627211
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Water Pump Part Number: 12566029
Product Specifications
- Other Name: Pump, Water; Oil Pump
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS

Buick LaCrosse Oil Pump

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In this article, Buick LaCrosse Oil Pump plays the significant role that should be understand concerning reliability and performance of Buick's classic mid-size sedan. Ensuring functions of the engine, the oil pump circulates it under pressure to lubricate and cool important engine parts. This is crucial to the engine durability and performance especially for various LaCrosse models; the first generation CX and CXL, the sophisticated CXS. That the Oil Pump is compatible with these models underlines its importance in boosting both efficiency and safety since proper oil pressure is critical for a vehicle's engine. The Buick LaCrosse Oil Pump has been designed by the company to be belt driven either on the crankshaft or the camshaft for durability. Other options, for example, new types of lubrication in the saturation of high-speed versions of the vehicle, make the LaCrosse stand out in the auto segment. Another critical component of the external system is the Oil Pump, and its proper functioning depends on routine maintenance, with a timely change of oil and filter, as clogs may hinder the system's functioning. Now, the Buick LaCrosse, the car with such an attractive design and features such as the eAssist hybrid system, and including the Oil Pump and its purpose to minimize fuel consumption while maintaining the performance level. In general, it can be concluded that Buick LaCrosse Oil Pump is one of the key components which ensures the reliability of the automobile, its efficiency, as well as contribution to the improvement of the driving experience, and it is one of the milestones by which Buick characteristically defines the commitment to the top-tier quality of their automobiles.

Buick LaCrosse Oil Pump Parts and Q&A

Water Pump
12566029
Q: How to replace the oil pump on Buick LaCrosse?
A:
You should begin by taking off the case side cover when replacing the Oil Pump. After that, use a flat-bladed tool to remove the electrical connectors from solenoid valves (315A, 315B, 322, 334, and 440), the tfp manual valve position switch (395), and the temperature sensor (391), being careful not to remove bolt (205). After that, take out the Oil Pump bolts (206, 207) and lift the Oil Pump (200) off the Valve Body (300). Put the Oil Pump (200) onto the Valve Body (300), then fasten Oil Pump bolts (206, 207), with m6 x 1 after putting all the electrical connectors back onto the solenoid valves (315a, 315b, 322, 334, and tap information should be reset with a scan tool to remove all cell values, causing the ecm, pcm, or tcm to relearn tap, which may affect the way the transmission performs. Finally, reset the tap values.
Water Pump
12640448
Q: How to Service and Repair the Oil Pump on Buick LaCrosse?
A:
Begin by taking out the case side cover to start the Oil Pump replacement process. Disconnect solenoid valves (315A/315B/322/334/440) tfp manual valve position switch (395) and temperature sensor (391) connections using a flat-tooth tool while keeping bolt (205) that binds Oil Pump pieces intact. After unplugging all electrical connectors attach to the Oil Pump you should now remove the Oil Pump bolts (206, 207). Once freed securely pull out the Oil Pump (200) from Valve Body (300). .align the Oil Pump (200) with Valve Body (300) openings before inserting Oil Pump bolts (206, 207). Secure the m6 x 1.0 x 85 bolts (207) to 12 nm torque level and the m6 x 1.0 x 95 bolts (206) to 16 nm torque level. Rejoin electrical wires to the control valves beginning with 440 at solenoid 315a while closing with temperature probe 391 and valve position switch 395.