gas tanks removal - The 1947 - Present Chevrolet & GMC Truck Message Board Network

19gmc67 · 12-09-2008, 02:14 AM

how hard is it to remove the gas tank.i'm wanting to remove my tank an clean all the old gas out of it.

LuckyHenriksen · 12-09-2008, 02:17 AM

I am also curious

JimKshortstep4x4 · 12-09-2008, 06:24 AM

It is not too bad of a job if the lower mounting bolts come out without issues. The seat has to come out, the gasline disconnected and moved out of the way. If there is an extra line then it will need to be disconnected also.

Depending on the year of the truck there are (7) mounting bolts to be removed. The lower row screws into the floor pan and it helps if a good penetrating fluid is applied from below on the screws that stick out.

If the fill pipe seal is good then it can be left in place. Just soap it up good around the filler neck and the filler neck can be pulled through the seal.

Jim

**lks dcvn** · 12-09-2008, 09:00 AM

but...if you have rust on the floor of your truck the difficulty of the job just doubled. Getting the bolts that hold the seatbelt out can be tricky if they are rusted - since there is little room to work with that bolt...

drain the gas out before you start using a siphon system...

ChevLoRay · 12-09-2008, 12:34 PM

If you don't have rust issues....it should be no problem. All of the bolts are on the inside of the cab. The fuel line will be disconnected (use flare nut wrenches). Disconnect the sending unit wire (brown). If your grommet was as sun-baked as mine was, you'll be better off using a razor knife and cutting it, as I did. I suppose it's possible to lube it up with some kind of lubricant. WD-40 will attack the rubber and may make it swell up, so I'd use another type.

I have gutted my cab, and the seatbelts are still in place....

tim21391 · 12-09-2008, 03:59 PM

it took me about fifteen minutes to get my tank out... there are i think 3 or four bolt up top and on the same on the bottom...then two lines in the middle you need a screw driver for...then you might need pliers on the passenger side to take two lines off since its a pinch clamp... make sure nobody gets in an fires up the truck with the tank out... i took my tank out to work on my frame under my bed while my friend works on cab corners... i then wanted to wash all the dust off frame so i put tank back in got a mile down the road and it took for ever while i crank the engine and pumping the gas....

tim21391 · 12-09-2008, 04:00 PM

but honestly it cant be bad if im a teenie bopper and i got it out no problems im sure u can too

12-09-2008, 02:14 AM	#1
19gmc67 Registered User Join Date: Jun 2008 Location: collierville,tennessee Posts: 122	gas tanks removal how hard is it to remove the gas tank.i'm wanting to remove my tank an clean all the old gas out of it.

12-09-2008, 02:17 AM	#2
LuckyHenriksen Registered User Join Date: Oct 2007 Location: Sherwood Oregon Posts: 1,908	Re: gas tanks removal I am also curious __________________ 1968 Yenko Chevy LWB 6.0L/TH400 3/4 Drop Senior Project Build Thread Here

12-09-2008, 06:24 AM	#3
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: gas tanks removal It is not too bad of a job if the lower mounting bolts come out without issues. The seat has to come out, the gasline disconnected and moved out of the way. If there is an extra line then it will need to be disconnected also. Depending on the year of the truck there are (7) mounting bolts to be removed. The lower row screws into the floor pan and it helps if a good penetrating fluid is applied from below on the screws that stick out. If the fill pipe seal is good then it can be left in place. Just soap it up good around the filler neck and the filler neck can be pulled through the seal. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

12-09-2008, 09:00 AM	#4
lks dcvn Registered User Join Date: Jan 2007 Location: Columbus, Ohio Posts: 4,346	Re: gas tanks removal but...if you have rust on the floor of your truck the difficulty of the job just doubled. Getting the bolts that hold the seatbelt out can be tricky if they are rusted - since there is little room to work with that bolt... drain the gas out before you start using a siphon system...

12-09-2008, 12:34 PM	#5
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: gas tanks removal If you don't have rust issues....it should be no problem. All of the bolts are on the inside of the cab. The fuel line will be disconnected (use flare nut wrenches). Disconnect the sending unit wire (brown). If your grommet was as sun-baked as mine was, you'll be better off using a razor knife and cutting it, as I did. I suppose it's possible to lube it up with some kind of lubricant. WD-40 will attack the rubber and may make it swell up, so I'd use another type. I have gutted my cab, and the seatbelts are still in place.... __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. Last edited by ChevLoRay; 12-09-2008 at 12:35 PM.

12-09-2008, 03:59 PM	#6
tim21391 Registered User Join Date: Jul 2007 Location: Salina, Kansas Posts: 1,998	Re: gas tanks removal it took me about fifteen minutes to get my tank out... there are i think 3 or four bolt up top and on the same on the bottom...then two lines in the middle you need a screw driver for...then you might need pliers on the passenger side to take two lines off since its a pinch clamp... make sure nobody gets in an fires up the truck with the tank out... i took my tank out to work on my frame under my bed while my friend works on cab corners... i then wanted to wash all the dust off frame so i put tank back in got a mile down the road and it took for ever while i crank the engine and pumping the gas.... __________________ 1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796

12-09-2008, 04:00 PM	#7
tim21391 Registered User Join Date: Jul 2007 Location: Salina, Kansas Posts: 1,998	Re: gas tanks removal but honestly it cant be bad if im a teenie bopper and i got it out no problems im sure u can too __________________ 1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796

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