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Holes in floor and trunk

topknot

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Mar 25, 2025
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northern michigan
I’ve seen a picture of a bare firewall with text saying what all the holes are for. Is there anything similar for the trunk and floor? I get some of these may be for drains but what are all of these holes for?

2F2B72D7-02F4-4379-A68E-49B28CABF37D.jpeg
 
yes I am aware most get plugs. My question is why are they there? Is it to access something under the car? On the floor there's 17 holes that don't seem to have a use, obviously this excludes the holes needed to mount the seats.
 
yes I am aware most get plugs. My question is why are they there? Is it to access something under the car? On the floor there's 17 holes that don't seem to have a use, obviously this excludes the holes needed to mount the seats.
When the cars were built at the factory, they were dipped in different chemicals at different intervals. They are present there to drain whatever product they used at the time. Bonus...Bonus...Bonus for us car owners. If you have rain or water issues, it provides a very nice drain outlet..... :lol:
 
yes I am aware most get plugs. My question is why are they there? Is it to access something under the car? On the floor there's 17 holes that don't seem to have a use, obviously this excludes the holes needed to mount the seats.
The bulk of the holes with rubber, or sometimes plastic or metal, plugs are for drainage of the cleaning, treatment, and primer solutions used in the unibody dip processes used when the cars were constructed as described in the following image:
Screenshot 2026-02-10 8.57.30 AM.png
 
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