Replaced Gas tank today - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cjlinkster · 07-09-2011, 10:00 PM

I replaced my driver's side gas tank today in my 1984 C20.

I installed the tank from the underside of the truck. Everything was going great until I got to the point of reattaching the fuel lines and electrical wires (for the fuel sender). The red wire would not snap on the fuel sender. I had the 20 gallon tank laying across my chest, and it was a bear to attach the fuel lines. I will be revisiting all of this when I pull the bed later this summer for body work.

Next time, I will be pulling the bed. I wrestled with installing the new tank for at least 2 hours (4 hours total including removing the old and cleaning the mounts).

While I was under there, I notice that about 3" section of my frame has a slight bend (flares downward about 1/4" to 1/2") just on the lower lip of the c-channel. The top section appears fine. I have attached a pic of an example of where the bend is located.

Is this something that I could just hammer back into place? Are our frames heat treated?

baclay9 · 07-09-2011, 10:09 PM

That is there purposely from the factory to make room for the catalytic converter.

cjlinkster · 07-09-2011, 10:15 PM

Cool, I was wondering about that. It is only on the drivers side.

J Knight · 07-09-2011, 10:36 PM

My 82 is the same way, the first time I crawled under my truck and saw it I was pissed.

Pyrotechnic · 07-09-2011, 10:38 PM

When I had my tanks out, I removed them from the bottom with the bed on. I disconnected the hoses at the hard lines on the frame. For the new hoses, I attached new sections of hose to the sending unit. I threw the new hose over the frame then raised the tank into place, and hooked the hose to the hard line afterwards.

For lowering and raising the tank, I used a long piece of wood and a floor jack to help out.

**old Rusty C10** · 07-10-2011, 08:52 AM

Quote:

Originally Posted by Pyrotechnic

For lowering and raising the tank, I used a long piece of wood and a floor jack to help out.

this is the way to do this

Goldfinger · 07-10-2011, 09:05 AM

also a good tree and a hoist make lifting the bed of much easier. its always easier to work from the top.

sethv · 07-10-2011, 11:33 AM

When I did my gas tank, I left the bed on, and had to do everything with no help or support... A simple job ended up turning into a 8 1/2 hour day...lol

07-09-2011, 10:00 PM	#1
cjlinkster Registered User Join Date: Jun 2011 Location: Atlanta ga Posts: 150	Replaced Gas tank today I replaced my driver's side gas tank today in my 1984 C20. I installed the tank from the underside of the truck. Everything was going great until I got to the point of reattaching the fuel lines and electrical wires (for the fuel sender). The red wire would not snap on the fuel sender. I had the 20 gallon tank laying across my chest, and it was a bear to attach the fuel lines. I will be revisiting all of this when I pull the bed later this summer for body work. Next time, I will be pulling the bed. I wrestled with installing the new tank for at least 2 hours (4 hours total including removing the old and cleaning the mounts). While I was under there, I notice that about 3" section of my frame has a slight bend (flares downward about 1/4" to 1/2") just on the lower lip of the c-channel. The top section appears fine. I have attached a pic of an example of where the bend is located. Is this something that I could just hammer back into place? Are our frames heat treated? Attached Images

07-09-2011, 10:09 PM	#2
baclay9 Registered User Join Date: Apr 2010 Location: Newcastle, OK Posts: 1,344	Re: Replaced Gas tank today That is there purposely from the factory to make room for the catalytic converter.

07-09-2011, 10:15 PM	#3
cjlinkster Registered User Join Date: Jun 2011 Location: Atlanta ga Posts: 150	Re: Replaced Gas tank today Cool, I was wondering about that. It is only on the drivers side. __________________ 1984 C20, 454, 4 speed named "Gold Member"

07-09-2011, 10:36 PM	#4
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: Replaced Gas tank today My 82 is the same way, the first time I crawled under my truck and saw it I was pissed. __________________ John 82 Chevy Silverado 350ci/TH350

07-09-2011, 10:38 PM	#5
Pyrotechnic Registered User Join Date: Feb 2007 Location: Austin, TX Posts: 3,930	Re: Replaced Gas tank today When I had my tanks out, I removed them from the bottom with the bed on. I disconnected the hoses at the hard lines on the frame. For the new hoses, I attached new sections of hose to the sending unit. I threw the new hose over the frame then raised the tank into place, and hooked the hose to the hard line afterwards. For lowering and raising the tank, I used a long piece of wood and a floor jack to help out. __________________ 1977 GMC Sierra Grande

07-10-2011, 09:05 AM	#7
Goldfinger Registered User Join Date: May 2010 Location: laurel hill Fl Posts: 645	Re: Replaced Gas tank today also a good tree and a hoist make lifting the bed of much easier. its always easier to work from the top. __________________ 1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ] 1999 k3500 crew cab dually 6.5tdi/4l80e

07-10-2011, 11:33 AM	#8
sethv Registered User Join Date: May 2011 Location: Bradford, PA Posts: 395	Re: Replaced Gas tank today When I did my gas tank, I left the bed on, and had to do everything with no help or support... A simple job ended up turning into a 8 1/2 hour day...lol __________________ 1981 K10 Scottsdale 305 ci \| TH350 \| NP208 \| 60k miles



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