Fuel Tank Size???--1997 GMC 3500HD

Chief McGee

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Oct 22, 2004, 6:33:55 PM10/22/04

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Can someone tell me the number of gallons each fuel tank holds? Truck is a
1997 GMC 3500HD diesel. Front tank is located between the rails, to the
left of the driveshaft, and slightly behind the cab. REAR tank is located
between the rails, and behind the rearend.
I need to remove the rear tank to make room for a trailer hitch and the
dump mechanism. So I would like to know how much fuel I will have left.
Thanks, Chief

Randd01

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Oct 22, 2004, 9:25:54 PM10/22/04

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I used ot own one and I believe it is 17 gals each tank for a total of 34 gals

Tony Kimmell

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Oct 23, 2004, 9:57:22 AM10/23/04

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ran...@aol.com (Randd01) wrote in message news:<20041022212554...@mb-m11.aol.com>...

> I used ot own one and I believe it is 17 gals each tank for a total of 34 gals

I still for the life of me cannot understand this concept... you can
have a dual tank vehicle which holds a total of 34 gallons, or you can
have a single tank vehicle that holds 34 gallons. What the heck is
the point of having 2 tanks if the're not going to make them bigger??

-Tony

Chief McGee

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Oct 23, 2004, 12:22:23 PM10/23/04

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"Tony Kimmell" <kim...@frontiernet.net> wrote in message
news:9e9dcf46.04102...@posting.google.com...

Judging by this 3500HD that I am working on, it is a matter of space. Both
tanks seem to be molded for a custom fit. There is no room left to make
either tank any bigger.
They did do an odd job with the plumbing. The rear tank has its own
pump that pumps directly into the front tank. Keeping the front tank full
until the rear tank is empty. The single gas gauge on the dash shows what is
in the front tank and there is no switch to change tanks. This makes it a
little odd because you can drive several hours before you start drawing off
the front tank and the gauge starts moving.

William R. Walsh

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Oct 23, 2004, 8:46:36 PM10/23/04

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Hi!

Two things...one I've been told by more than a few and the other I came up
with on my own...

1. Dual tanks better distribute the weight of the fuel on the vehicle. No
idea how true that is--that's the one I was told, but I could see how it
might make sense.

2. Flip the tank selector switch when your first tank is about empty and the
second is full. Watch the fuel gauge. Cool, huh? (Okay, a cheap thrill, but
fun for one or two times...and for people who don't know you have dual
tanks...)

William The Guesser

embee

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Jul 8, 2013, 1:17:59 PM7/8/13

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replying to Chief McGee, embee wrote:

Just had a blowout yesterday and jerked the kneck out of my rear tank. Ruined
of course. Is the tank for the diesel the same as the one for the gas model.
If so would you be interested in selling the tank you take out?

Mark

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Steve1954

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Aug 20, 2015, 6:18:00 PM8/20/15

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replying to Randd01, Steve1954 wrote:

> randd01 wrote:
>
> I used ot own one and I believe it is 17 gals each tank for a total of 34
gals

So is there a switch to change tanks, if so where is it located