How to replace the Coolant Reservoir (L27, LY7) on Buick LaCrosse?

When replacing the coolant recovery reservoir (L27, LY7), the first move is best to reposition the Coolant Reservoir hose clamp aside that is located at the radiator overflow fitting and also disconnect the Coolant Reservoir hose from the fitting. Disconnect the Coolant Reservoir hose retainer from the electrical harness and remove the lower retainer and shock tower studs nuts then remove the lower retainer from the shock tower studs and take out the lower retainer with the shock tower studs. Drain the coolant from recovery reservoir into a clean container. For installation, install the coolant recovery reservoir back on the studs and lower retainer to the shock tower, then install nuts on the studs and tighten them to 3.3 n.m (29 lb in). Surakanity reservoir hose by using clean water and fit it to the radiator overflow neck fitting at a right 90 degrees and make sure the hose end is flush with the radiator filler neck making sure the clamp is seated square between the neck and the flared end neck of the fitting. Reconnect the coaxial harness connector for the cooling fan module switch back onto the module, and connect the Coolant Reservoir hose to the radiator overflow fitting along with repositioning the Coolant Reservoir hose retained to the electrical harness before moving on the Coolant Reservoir hose clamp to the fitting. Finally, top up the coolant recovery reservoir up to the correct level.

OEM Buick LaCrosse Coolant Reservoir

Coolant Tank Reservoir

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

6 Coolant Reservoirs found

View related parts
Buick LaCrosse Expansion Tank Part Number: 23386455
$48.26 MSRP: $71.82
You Save: $23.56 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Container, Heater Coolant Tank; Engine Coolant Reservoir; Coolant Reservoir; Reservoir Tank; Cap; Reservoir; Tank, Engine Coolant Recovery
- 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
View related parts
Buick LaCrosse Reservoir Tank Part Number: 22950436
$36.78 MSRP: $70.77
You Save: $33.99 (49%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Container, Heater Coolant Tank; Coolant Reservoir; Reservoir; Tank, Engine Coolant Recovery
- Replaces: 13220124, 20902124, 22917996, 25941270
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, CXS, Leather, Premium, Sport Touring, Touring | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
View related parts
Buick LaCrosse Reservoir Tank Part Number: 25924048
Product Specifications
- Other Name: Reservoir, Engine Coolant Recovery; Coolant Reservoir; Reservoir
- Replaces: 10336881, 15219341, 15913154, 10349231, 10353392, 15820110
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL, CXS | 6 Cyl 3.6 L GAS, 6 Cyl 3.8 L GAS
View related parts
Buick LaCrosse Reservoir Part Number: 25924047
$25.38 MSRP: $39.75
You Save: $14.37 (37%)
Product Specifications
- Other Name: Reservoir, Engine Coolant Recovery; Coolant Reservoir
- Replaces: 15820109
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2008 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS
View related parts
Buick LaCrosse Reservoir Part Number: 23120052
Product Specifications
- Other Name: Container, Heater Coolant Tank; Coolant Reservoir; Tank, Engine Coolant Recovery
- 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)
View related parts
Buick LaCrosse Reservoir Part Number: 15822510
Product Specifications
- Other Name: Reservoir, Engine Coolant Recovery; Coolant Reservoir
- Replaces: 10346645
- 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

Buick LaCrosse Coolant Reservoir

Want to cut long-term maintenance and repair costs? Choose OEM Coolant Reservoir. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Buick LaCrosse parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Buick LaCrosse Coolant Reservoir includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

As a part of the assembly of the engine cooling system, the Coolant Reservoir is quite popular and widely used for different models of LaCrosse. This Coolant Reservoir bears a significant role in regulating the coolant levels, protecting against the coolant leaks, and also it is vital to exclude the air suction in the system to save the engine's performance and safety. The Buick LaCrosse features two types of Coolant Reservoirs: The two types of cooling tank systems are; the overflow tank systems and the expansion tank systems. Regarding the Coolant Reservoir, it should be checked periodically for cracks and leaks in order to prevent environmental contamination, if the antifreeze leaks. The Buick LaCrosse, launched in 2004, is a model that has undergone some changes, and has targeted the young generation with the inventions in it as well as in the powers that propel the car. The Coolant Reservoir design fits the LaCrosse brand because of performance without compromising efficiency and power. It is worth mentioning that the second generation of the LaCrosse came with the eAssist hybrid system; therefore, the Coolant Reservoir is key to the performance of the automobile industry. A special focus on the extensive construction and the constructive features of the Coolant Reservoir place it in the focus of the automotive industry and makes the car's model LaCrosse popular among drivers who look for cars with high safety and reasonable fuel consumption rates. Taken as a whole, the Coolant Reservoir is a excellent symbol of the brand that commits itself to creating and manufacturing high-quality automobile products as a core component of the Buick LaCrosse.

Buick LaCrosse Coolant Reservoir Parts and Q&A

Reservoir
25924047
Q: How to replace the Coolant Reservoir (L27, LY7) on Buick LaCrosse?
A:
When replacing the coolant recovery reservoir (L27, LY7), the first move is best to reposition the Coolant Reservoir hose clamp aside that is located at the radiator overflow fitting and also disconnect the Coolant Reservoir hose from the fitting. Disconnect the Coolant Reservoir hose retainer from the electrical harness and remove the lower retainer and shock tower studs nuts then remove the lower retainer from the shock tower studs and take out the lower retainer with the shock tower studs. Drain the coolant from recovery reservoir into a clean container. For installation, install the coolant recovery reservoir back on the studs and lower retainer to the shock tower, then install nuts on the studs and tighten them to 3.3 n.m (29 lb in). Surakanity reservoir hose by using clean water and fit it to the radiator overflow neck fitting at a right 90 degrees and make sure the hose end is flush with the radiator filler neck making sure the clamp is seated square between the neck and the flared end neck of the fitting. Reconnect the coaxial harness connector for the cooling fan module switch back onto the module, and connect the Coolant Reservoir hose to the radiator overflow fitting along with repositioning the Coolant Reservoir hose retained to the electrical harness before moving on the Coolant Reservoir hose clamp to the fitting. Finally, top up the coolant recovery reservoir up to the correct level.