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Click on image for the lowdown. 
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| | | Forums66 Topics128,195 Posts1,057,377 Members48,469 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Aug 2011 Posts: 154 Shop Shark | | Shop Shark Joined: Aug 2011 Posts: 154 | Working on my 55 (yes, been gone from the forum for a while). I'm a the point where I'm taking care of some of the holes in the interior, then ordering heat shield then carpet. I know one of these two holes was for the floor starter button, but not sure about the other. I plan on welding a piece of metal over the holes to keep out the fumes; and maybe in a few years put the foot starter back in (there is a lot more I need to do to the truck and that is not on the priority list). http://2coolfishing.com/ttmbforum/showthread.php?t=938737
1955 GMC 100 Series 2
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | the oval foot start hole had a gasketed metal plate screwed on from the factory if it had key start [that's why the 2 small holes] - the round hole was an access for some bolt, forget what, came originally with a press-in plug, no need for welding either one
Bill | | | | | Joined: Aug 2011 Posts: 154 Shop Shark | | Shop Shark Joined: Aug 2011 Posts: 154 | Thanks Bill. What would you recommend, just screw in a piece of metal, maybe with a gasket? I want to put something over them before I put the heat shield down; if nothing else to keep fumes from coming in the cab.
1955 GMC 100 Series 2
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | yes, cut an oval of sheet metal, put a bead of silicone seal on the flange, screw it on - for the round hole I think there should be a snap in metal plug for electrical boxes that will fit, some silicone on it too
Bill | | |
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