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Author Topic: Dual Tank Issues  (Read 28746 times)

Offline mlmx52002

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Dual Tank Issues
« on: September 07, 2010, 10:11:08 pm »
Hi,

First post here. I have a 79 C20 with dual tanks. The problem is they don't work. What the previous owner told me, since I just bought the truck back in July is that it is "stuck" on the right hand tank. He found out the hard way and switched it and it didn't switch. Apparently the switch on the dash switches the gas gauge, but only that. The gas gauge functions with both tanks. So my question is where do I start in trying to fix it? It'd be wonderful to use the dual tanks as the 350 4 speed gets  I think about 10 at best.

Thanks,

Joe
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Offline Irish_Alley

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Re: Dual Tank Issues
« Reply #1 on: September 08, 2010, 01:05:00 am »
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Offline shufflekidd

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Re: Dual Tank Issues
« Reply #2 on: September 28, 2010, 09:35:08 am »
I have the 87 Silverado also. If you remember, there was a recall/ on the dual tank models due to safety issues with exploding or burning "side saddle" dual tanks. Most original owners were notified, and took the trucks in to have it fixed. On the truck I inherited, I still have documentation on the "fix", which the Chevy mechanics did. It was simply disabling/removing the second fuel pump relay, thats all they did. Unplugged the relay from the harness and removed it. Chances are, you might be able to install and plug up a new relay and both tanks will work if the "disabled" tank pump is still functioning. Be aware that any old fuel or varnish in the unused,"disabled" tank from the fix will only gum up your fuel system and destroy the tbi pressure regulator, so if you decide to pursue using dual tanks, you will probably have to disassemble tanks and clean it thoroughly, as well as blow and clean its fuel and return lines before even testing it.   :-X
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Offline Grim 82

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Re: Dual Tank Issues
« Reply #3 on: September 28, 2010, 10:00:15 am »
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Offline mlmx52002

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Re: Dual Tank Issues
« Reply #4 on: September 28, 2010, 10:25:37 am »
Thanks for the help guys, but the darn thing wouldn't pass our lovely CA emissions, so I have since gotten rid of the sucker. It needed at most a rebuilt carb and possibily a cat.

Joe
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Offline Captkaos

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Re: Dual Tank Issues
« Reply #5 on: September 28, 2010, 05:56:19 pm »
Side note, there was NO recall on any trucks for the bogus "exploding" side tanks.
There was only a voucher from GM that would allow you $1000 against the purchase of a new vehicle.
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Offline VileZambonie

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Re: Dual Tank Issues
« Reply #6 on: September 28, 2010, 11:41:19 pm »
Quote from: shufflekidd on September 28, 2010, 09:35:08 am
I have the 87 Silverado also. If you remember, there was a recall/ on the dual tank models due to safety issues with exploding or burning "side saddle" dual tanks. Most original owners were notified, and took the trucks in to have it fixed. On the truck I inherited, I still have documentation on the "fix", which the Chevy mechanics did. It was simply disabling/removing the second fuel pump relay, thats all they did. Unplugged the relay from the harness and removed it. Chances are, you might be able to install and plug up a new relay and both tanks will work if the "disabled" tank pump is still functioning. Be aware that any old fuel or varnish in the unused,"disabled" tank from the fix will only gum up your fuel system and destroy the tbi pressure regulator, so if you decide to pursue using dual tanks, you will probably have to disassemble tanks and clean it thoroughly, as well as blow and clean its fuel and return lines before even testing it.   :-X

Yeah your info is WAY off here. You think GM would recall a truck and just say we're going to abandon a tank on you have a nice day? There is no second fuel pump relay so I'd love to see your documentation on the "fix"
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Offline shufflekidd

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Re: Dual Tank Issues
« Reply #7 on: September 30, 2010, 02:41:28 pm »
Yeah okay, maybe in your state there were no issues with gm dual saddles, but here in Tennessee, i know of at least two guys, including my grandfather, who took the trucks in and the gm mechanics "disabled" the right side tank, saying it was fixed, and they got the 1000 buck bonus on possible next purchase, which neither of them took, as they were not happy with the service they got on the first trucks. Just sayin!
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Offline 756man

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Re: Dual Tank Issues
« Reply #8 on: September 30, 2010, 10:14:45 pm »
First off how do you think disabling 1 tank would make it safer? Second you didn't need to take your truck in to a dealer in order to get the $1000 off certificates. They sent me 2 and I had already sold 1 of the trucks.
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Offline VileZambonie

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Re: Dual Tank Issues
« Reply #9 on: September 30, 2010, 10:23:52 pm »
Quote from: shufflekidd on September 30, 2010, 02:41:28 pm
Yeah okay, maybe in your state there were no issues with gm dual saddles, but here in Tennessee, i know of at least two guys, including my grandfather, who took the trucks in and the gm mechanics "disabled" the right side tank, saying it was fixed, and they got the 1000 buck bonus on possible next purchase, which neither of them took, as they were not happy with the service they got on the first trucks. Just sayin!

You're misinformed however you state you have documentation so please provide proof. You say you have documentation so let's see it please....Just sayin!
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Offline mnz28

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Re: Dual Tank Issues
« Reply #10 on: October 05, 2010, 08:15:19 pm »
I thought the issue was side impact crashes and the tank could leak.
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Offline Irish_Alley

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Re: Dual Tank Issues
« Reply #11 on: October 05, 2010, 08:26:55 pm »
I don't honk the leak you should worry about but the fire ball lol.
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Offline VileZambonie

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Re: Dual Tank Issues
« Reply #12 on: October 10, 2010, 12:37:44 am »
Quote from: Irish_Alley on October 05, 2010, 08:26:55 pm
I don't honk the leak you should worry about but the fire ball lol.

Are you sure you don't honk the leak?
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Offline Irish_Alley

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Re: Dual Tank Issues
« Reply #13 on: October 10, 2010, 12:41:14 am »
I try not to at least lol. when I start typing on the cell phone the droid its little slower than me so by time I finished typing the first line its still trying to type the first word so I don’t get to see what I type unless I proof read and that I don’t
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

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Offline VileZambonie

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Re: Dual Tank Issues
« Reply #14 on: October 10, 2010, 12:44:47 am »
lol, I have the EVO and it suggests wrong words on me all the time.
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