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[GMCnet] Gas Tank Selector Valve [message #369114] Tue, 15 March 2022 23:31 Go to next message
Cesar Carrasco is currently offline  Cesar Carrasco   United States
Messages: 30
Registered: September 2017
Location: Riverside, California
Karma: 0
Member
This is my first email to this list. I’ve been reading the emails for a few years now, but never commented or sent anything until now. I hope I’m doing it right.

My tank selector valve works fine but it is not getting power when I set the tank selector switch to auxiliary tank. What should I check? I tried looking for a schematic online but haven’t found one.

Cesar
73 Sequoia 23’
Riverside, California




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Re: [GMCnet] Gas Tank Selector Valve [message #369118 is a reply to message #369114] Wed, 16 March 2022 08:16 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Mexico
Messages: 2276
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
Senior Member
You can find the wiring diagrams here:

http://www.bdub.net/wirediagrams

Looks like you have a 1973, so they are at the top of the list. Get both the engine (Chassis) and the house wiring diagrams while you are at it.

The selector switch is a double pole switch. One side selects which tank sender gets connected to the gas gauge and the other side sends 12V to the selector valve when in the Aux position.


Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
[GMCnet] Re: Gas Tank Selector Valve [message #369144 is a reply to message #369118] Wed, 16 March 2022 23:53 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
You do need to replace it if original as the rubber inside will give
problems.
Go to our web site under Fuel.

On Wed, Mar 16, 2022 at 6:16 AM Bruce Hislop wrote:

> You can find the wiring diagrams here:
>
> http://www.bdub.net/wirediagrams
>
> Looks like you have a 1973, so they are at the top of the list. Get both
> the engine (Chassis) and the house wiring diagrams while you are at it.
>
> The selector switch is a double pole switch. One side selects which tank
> sender gets connected to the gas gauge and the other side sends 12V to the
> selector valve when in the Aux position.
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>


--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Gas Tank Selector Valve [message #369147 is a reply to message #369114] Thu, 17 March 2022 08:35 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
What Jimmy the K said. Also, the rather expensive valve from a 300 six '85 F - 150 will work. If I ever put a rear tank back in mine, I'll put the valve in and the switch, both of which have been removed before I got it. Replacing the rear tank requires removing or at least lifting the bed from the frame. Not gonna happen unless I want to go traveling in it.

--johnny


Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell
[GMCnet] Re: Gas Tank Selector Valve [message #369152 is a reply to message #369144] Thu, 17 March 2022 09:19 Go to previous message
Cesar Carrasco is currently offline  Cesar Carrasco   United States
Messages: 30
Registered: September 2017
Location: Riverside, California
Karma: 0
Member
Thanks Jim. I do have a new valve I bought from you. I tested it and it works fine. The hot wire to the valve is not getting power. I was hoping it was a bad fuse I missed, but it looks like I’m going to have to trace the wire. The gas gauge are working for both tanks. Am I missing something?

Thanks again!

Sent from my iPhone

> On Mar 16, 2022, at 9:53 PM, Jim Kanomata wrote:
>
> You do need to replace it if original as the rubber inside will give
> problems.
> Go to our web site under Fuel.
>
>> On Wed, Mar 16, 2022 at 6:16 AM Bruce Hislop wrote:
>>
>> You can find the wiring diagrams here:
>>
>> http://www.bdub.net/wirediagrams
>>
>> Looks like you have a 1973, so they are at the top of the list. Get both
>> the engine (Chassis) and the house wiring diagrams while you are at it.
>>
>> The selector switch is a double pole switch. One side selects which tank
>> sender gets connected to the gas gauge and the other side sends 12V to the
>> selector valve when in the Aux position.
>>
>> --
>> Bruce Hislop
>> ON Canada
>> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
>> My Staff says I never listen to them, or something like that
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
>
>
> --
> Jim Kanomata ASE
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.gmcrvparts.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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