How to replace my Evaporator and Thermal Expansion Valve?

RODJAMES

MEMBER
2004 CHEVROLET MONTE CARLO
3.4L
V6
2WD
AUTOMATIC
210,000 MILES

The car listed above is an LS? Also, how to replace the entire A/C Hose assembly?

Thursday, January 5th, 2023 AT 7:50 PM

7 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,640 POSTS

The first thing you need to do is vacuum down the system which this video will show you how to do. Next you will need to remove the dashboard which sounds harder than it is, I will include the instructions for that in the post below this one because it will be too long in one post.

https://youtu.be/4EqdrBVb0sY

Next here are the instructions for the hose and evaporator replacement in the images below. Check out the images (below). Please let us know if you need anything else to get the problem fixed.

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Friday, January 6th, 2023 AT 12:00 PM

KEN L

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You will need to disconnect the battery before you begin. Check out the images below to show you how to remove the dashboard. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.

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Friday, January 6th, 2023 AT 12:05 PM

RODJAMES

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25 POSTS

How do I remove the Heat Stakes from the HVAC Module Assembly?

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Sunday, March 12th, 2023 AT 1:53 AM

KEN L

MASTER CERTIFIED MECHANIC
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Heat Stakes? Can you upload an image please?

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Monday, March 13th, 2023 AT 12:05 PM

RODJAMES

MEMBER
25 POSTS

Here’s my HVAC unit case where my evaporator and heater core reside. I’m trying to separate the upper and lower case so I can replace them. The red circles I drew are supposedly called heat stakes. How do I take apart this case? The instructions say use a small chisel but I’m wondering if there’s another way.

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