Do I need to remove the expansion valve through the engine compartment?

Tiny
SUDHAMA GIBBONS
  • MEMBER
  • 2010 BUICK LA CROSSE
  • V6
  • 4WD
  • AUTOMATIC
  • 144,010 MILES
Or do I remove the glove compartment or dash to get to it? If I have to go through the engine compartment. What do I have to do?
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Thursday, July 14th, 2022 AT 3:11 PM

3 Replies

Tiny
SQM
  • EXPERT
Hello,

The expansion valve can be accessed from under the hood. You will have to remove some wires/hoses to get to it.

Let me know of any questions.
Thank you.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
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Thursday, July 14th, 2022 AT 8:55 PM
Tiny
SUDHAMA GIBBONS
  • MEMBER
  • 2010 BUICK LA CROSSE
  • 4WD
  • AUTOMATIC
  • 144,010 MILES
How do I access the expansion valve in order to replace it?
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Saturday, July 16th, 2022 AT 6:04 PM (Merged)
Tiny
SQM
  • EXPERT
Hello,

The expansion valve is located on the firewall (see diagram below). You will have to remove the evaporator hose assembly to remove the expansion valve.
Keep in mind that before this can be completed the A/C system needs to be vacuumed down.

Here is a helpful guide:

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

I have attached a diagram below for your reference.

Let me know of any questions.
Thank you.
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Saturday, July 16th, 2022 AT 6:04 PM (Merged)

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