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HelloCustomer The expansion valve is bolted to the evaporator. Follow where the lines travel into the vehicle. On the heaterbox you will see a plastic cover that is bolted to the box at the same general location as to where the lines come into the car. Unbolt that cover. That is the expansion valve cover. You will unbolt it through the access hole left after you disconnect the lines from the evaporator housing and you'll slide it out from the opening created by removing that cover.
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