help with firewall holes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JGross · 08-01-2010, 03:03 PM

I am welding up the holes in the firewall that I'm not going to need and I have two questions. The PO had removed everything from the firewall before I got the truck so I'm not sure what this plug is for, I think it's for the heater blower but I'm going to install an under the dash system so will I need this plug and the hole in the firewall? The photo is from a 66 panel truck but my 65 short fleet has the same hole.

Second, What are these two holes for and do I need them?

Thanks for the help

08-01-2010, 03:03 PM	#1
JGross Registered User Join Date: Apr 2010 Location: Hattiesburg Ms Posts: 235	help with firewall holes I am welding up the holes in the firewall that I'm not going to need and I have two questions. The PO had removed everything from the firewall before I got the truck so I'm not sure what this plug is for, I think it's for the heater blower but I'm going to install an under the dash system so will I need this plug and the hole in the firewall? The photo is from a 66 panel truck but my 65 short fleet has the same hole. Second, What are these two holes for and do I need them? Thanks for the help



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.