How to replace the thermostat (LY7) on Buick LaCrosse?

You should start by draining part of the cooling system before beginning Thermostat (LY7) replacement. You must never separate the components within the upper and lower Intake Manifold system. The installation process requires upper Intake Manifold removal alongside lower Intake Manifold extraction. Detach the surge tank hose from the Thermostat position while removing the coolant pipe/Thermostat housing bolt followed by the coolant pipe bolt . The coolant inlet pipe requires removal from the Thermostat housing before discarding the coolant pipe o-ring seal . The first step is to remove all bolts from the Thermostat before pulling out the Thermostat while disposing of the Thermostat seal. Install the Thermostat while using a new Thermostat seal then tighten the Thermostat bolts to 10 nm (89 inch lbs.). First position the coolant pipe together with its new seal on the fasteners (1 and 3). Next connect the surge tank hose correctly to the Thermostat. Install both the upper and lower intake manifolds before completing the cooling system.

OEM Buick LaCrosse Thermostat

Engine Coolant Thermostat

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6 Thermostats found

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Buick LaCrosse Thermostat Unit Part Number: 24505924
$24.47 MSRP: $48.56
You Save: $24.09 (50%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant (W/Gasket); Thermostat; Thermostat, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Thermostat Unit Part Number: 12600171
$24.02 MSRP: $45.12
You Save: $21.10 (47%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat
- Replaces: 12581595
- 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 Thermostat Housing, Green Line Part Number: 12597172
$98.01 MSRP: $201.41
You Save: $103.40 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Engine Coolant Thermostat Housing; Thermostat Housing Cover; Water Manifold; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, Leather, Premium | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Thermostat, Green Line Part Number: 12622410
$69.04 MSRP: $153.83
You Save: $84.79 (56%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat Kit, Engine Coolant Temperature; Thermostat, Engine Coolant Temperature
- Replaces: 21018811, 55350941, 90537453, 12615097
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, Leather, Premium | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Thermostat Housing Part Number: 12689039
$74.81 MSRP: $153.74
You Save: $78.93 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12651113
- 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 | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Thermostat Housing Part Number: 12597257
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Water Outlet; Housing, Engine Coolant Thermostat
- Replaces: 12574355
- 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

Buick LaCrosse Thermostat

Want to cut long-term maintenance and repair costs? Choose OEM Thermostat. 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 Thermostat 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.

Buick LaCrosse Thermostat is one of the vital body parts of the car that relates to the cooling system, which is very famous due to its efficiency. Sitting close to the radiator, the Thermostat is an important component that controls the engine heat levels hence the proper running of the Buick LaCrosse. This closed loop control device is able to monitor and regulate the indicated temperature and controls the flow of the heat transfer fluids add more comfort to the Buick LaCrosse drivers as well as increases the operational efficiency. Being compatible with a range of LaCrosse models, the Thermostat applications are aimed at meeting the basic requirements for each generation starting from the one that came out in 2004. Additional mechanical and pneumatic designs make the impulse turbine have a higher quality in temperature control and this is essential for the safety and performance of the engine. The Buick LaCrosse Thermostat this has made it possible in the automotive market since it can help to increase fuel consumption while at the same time making the engine to run smoothly so as to make driving more enjoyable. Government standards, the development of new models with the support of technologies such as the eAssist hybrid system in the later models, change in the population with younger people interested in the Buick LaCrosse; all these makes the Thermostat a critical factor in this transformation. In the end, the durability and usability of the Buick LaCrosse Thermostat contribute not only to the performance of Buick LaCrosse but also prove the company's focus on the quality and safety that Buick provides to their customers.

Buick LaCrosse Thermostat Parts and Q&A

Thermostat Housing
12597257
Q: How to replace the thermostat (LY7) on Buick LaCrosse?
A:
You should start by draining part of the cooling system before beginning Thermostat (LY7) replacement. You must never separate the components within the upper and lower Intake Manifold system. The installation process requires upper Intake Manifold removal alongside lower Intake Manifold extraction. Detach the surge tank hose from the Thermostat position while removing the coolant pipe/Thermostat housing bolt followed by the coolant pipe bolt . The coolant inlet pipe requires removal from the Thermostat housing before discarding the coolant pipe o-ring seal . The first step is to remove all bolts from the Thermostat before pulling out the Thermostat while disposing of the Thermostat seal. Install the Thermostat while using a new Thermostat seal then tighten the Thermostat bolts to 10 nm (89 inch lbs.). First position the coolant pipe together with its new seal on the fasteners (1 and 3). Next connect the surge tank hose correctly to the Thermostat. Install both the upper and lower intake manifolds before completing the cooling system.