How to replace the A/C Expansion Valve in a system on Buick LaCrosse?

The first step to replace the thermal expansion valve (TXV) must be a recovery of the refrigerant from the a/c system. First remove the Evaporator tube to txv nut then disconnect both Evaporator outlet and inlet tubes that are attached to the txv. Immediately cover the Evaporator inlet and outlet tubes with caps after discarding the sealing washers because this action prevents contamination of the refrigerant system. The replacement procedure requires you to take out the txv from the Evaporator core after removing its bolts while again discarding the sealing washers. Two new sealing washers on the Evaporator core must be added before txv installation on the Evaporator core using txv-to-Evaporator bolts and tightening both bolts to 7 n.m (62 lb in). Uncover and untape both Evaporator tubes and then place new sealing washers on these tubes before attaching these tubes to the txv. Attach the Evaporator tube nut before tightening it to 27 n.m (20 lb ft). Evacuation of the a/c system must be followed by charging and completion of a halogen leak detector (J 39400-A) test on the fittings.

OEM Buick LaCrosse A/C Expansion Valve

Air Conditioning Expansion Valve

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4 A/C Expansion Valves found

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Buick LaCrosse Expansion Valve, Green Line Part Number: 52495729
$85.31 MSRP: $175.32
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Product Specifications
- Other Name: Valve Kit, Air Conditioner Evaporator; A/C Expansion Valve; Valve Kit, A/C Expansion Refrigerant; Valve, A/C Expansion Refrigerant; Valve Kit, A/C Evaporator
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL, CXS, Super | 6 Cyl 3.6 L GAS, 6 Cyl 3.8 L GAS, 8 Cyl 5.3 L GAS
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Buick LaCrosse Expansion Valve Part Number: 13313727
$68.29 MSRP: $140.33
You Save: $72.04 (52%)
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Product Specifications
- Other Name: Valve Kit, Air Conditioner Expansion Refrigerant; Valve Kit, A/C Expansion Refrigerant
- 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
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Buick LaCrosse Expansion Valve Part Number: 84806899
$52.01 MSRP: $106.85
You Save: $54.84 (52%)
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Product Specifications
- Other Name: Valve Kit, Air Conditioner Expansion Refrigerant; A/C Expansion Valve; Valve Kit, A/C Expansion Refrigerant
- Replaces: 23506186
- 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 | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.6 L GAS
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Buick LaCrosse Expansion Valve Part Number: 13363526
$128.23 MSRP: $263.51
You Save: $135.28 (52%)
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Product Specifications
- Other Name: Valve Kit, Air Conditioner Expansion Refrigerant; A/C Expansion Valve; Valve Kit, A/C Expansion Refrigerant
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2013-2016 Buick LaCrosse | Base, Leather, Premium, Sport Touring, Touring | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS

Buick LaCrosse A/C Expansion Valve

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The Buick LaCrosse A/C Expansion Valve plays a crucial role that positively impacts the functionality of the car's AC system. Another part attributed to reliable performance is the A/C Expansion Valve, which efficiently controls the passage of refrigerant, thus preserving the proper temperature and condition in the Buick LaCrosse along with other harsh weather conditions. This part may be used in different LaCrosse models and, thus, can be considered an important part of car design in different generations. Essentially the A/C Expansion Valve serves more than esthetic function by increasing the efficiency of the Buick LaCrosse but most importantly serves important safety of the travelers by regulating the temperature inside the car. It has superior features, arguably, than some of the new models in the increasing automobile market including better heat exchange and abrasion, thereby earning theCustomers trust more for Buick vehicles. The durability of the A/C Expansion Valve is proven by its capability to provide a steady performance on the road trip; thus, Buick LaCrosse offers a comfortable ride to the passengers. Thus, the A/C Expansion Valve remains as an integral part of the Buick LaCrosse development throughout its transformations, proving the brand's adherence to its motto-Superior engineering for superior performance. All in all, the Buick LaCrosse A/C Expansion Valve is as much more than a mere part as Buick is committed to building efficient, safe, and satisfying automobiles.

Buick LaCrosse A/C Expansion Valve Parts and Q&A

Expansion Valve, Green Line
52495729
Q: How to replace the A/C Expansion Valve in a system on Buick LaCrosse?
A:
The first step to replace the thermal expansion valve (TXV) must be a recovery of the refrigerant from the a/c system. First remove the Evaporator tube to txv nut then disconnect both Evaporator outlet and inlet tubes that are attached to the txv. Immediately cover the Evaporator inlet and outlet tubes with caps after discarding the sealing washers because this action prevents contamination of the refrigerant system. The replacement procedure requires you to take out the txv from the Evaporator core after removing its bolts while again discarding the sealing washers. Two new sealing washers on the Evaporator core must be added before txv installation on the Evaporator core using txv-to-Evaporator bolts and tightening both bolts to 7 n.m (62 lb in). Uncover and untape both Evaporator tubes and then place new sealing washers on these tubes before attaching these tubes to the txv. Attach the Evaporator tube nut before tightening it to 27 n.m (20 lb ft). Evacuation of the a/c system must be followed by charging and completion of a halogen leak detector (J 39400-A) test on the fittings.