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

Recovery of refrigerant must occur as the first step before replacing the thermal expansion valve. The first step involves unfastening the Evaporator tube to thermostatic expansion valve (TXV) nut before removing the Evaporator outlet and inlet tube from the txv. Cap or tape the exposed inlet and outlet tubes of the Evaporator before discarded sealing washers to avoid contaminating the refrigerant system. The next step involves logging out of the txv to Evaporator bolts to extract the txv from the Evaporator core before discarding both sealing washers. The installation process requires new sealing washers to be inserted on the Evaporator core followed by txv installation onto the core while following fastener notice service precautions. An advanced torque of 7 n.m (62 lb in) should be used to tighten txv to Evaporator bolts. Take away tape or caps from Evaporator inlet and outlet tubes before applying new sealing washers to these connections. Install the Evaporator tube nut on top of the txv then tighten it to 17 n.m (12.5 lb ft). The a/c system needs evacuation then recharging after which one should conduct a leak test on components using halogen leak detector (J 39400-A).

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
$98.18 MSRP: $175.32
You Save: $77.14 (44%)
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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
$77.03 MSRP: $137.57
You Save: $60.54 (45%)
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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
$50.98 MSRP: $104.75
You Save: $53.77 (52%)
Ships in 1-3 Business Days
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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
$144.02 MSRP: $258.35
You Save: $114.33 (45%)
Ships in 1-2 Business Days
ADD TO CART
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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Buick LaCrosse A/C Expansion Valve Parts Questions & Experts Answers

Expansion Valve, Green Line
52495729
Q: How to replace the A/C Expansion Valve in an A/C system on Buick LaCrosse?
A: Recovery of refrigerant must occur as the first step before replacing the thermal expansion valve. The first step involves unfastening the Evaporator tube to thermostatic expansion valve (TXV) nut before removing the Evaporator outlet and inlet tube from the txv. Cap or tape the exposed inlet and outlet tubes of the Evaporator before discarded sealing washers to avoid contaminating the refrigerant system. The next step involves logging out of the txv to Evaporator bolts to extract the txv from the Evaporator core before discarding both sealing washers. The installation process requires new sealing washers to be inserted on the Evaporator core followed by txv installation onto the core while following fastener notice service precautions. An advanced torque of 7 n.m (62 lb in) should be used to tighten txv to Evaporator bolts. Take away tape or caps from Evaporator inlet and outlet tubes before applying new sealing washers to these connections. Install the Evaporator tube nut on top of the txv then tighten it to 17 n.m (12.5 lb ft). The a/c system needs evacuation then recharging after which one should conduct a leak test on components using halogen leak detector (J 39400-A).