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Author Topic: 87 Silverado with dual gas tanks  (Read 1933 times)

Offline erix993

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87 Silverado with dual gas tanks
« on: August 12, 2018, 03:10:19 PM »
I had both tanks cleaned out and new pumps installed as well as sending unit.  Both tanks have plenty of gas but when I switch to one the truck cuts off as if out of gas. Is there a fuse or something simple I can check ?
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Offline Henry

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Re: 87 Silverado with dual gas tanks
« Reply #1 on: August 13, 2018, 12:19:45 PM »
Hi erix993:
I would think the gas tank switch valve is on a fused circuit...check your glove box manual to see what all your fuses are for...if you dont have the manual, just take a look at your fuse block and see if any are blown.
Regards,
Henry
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Offline bd

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Re: 87 Silverado with dual gas tanks
« Reply #2 on: August 13, 2018, 08:39:06 PM »
Flip the tank selector switch to the left tank then switch the ignition ON w/o cranking.  Next, turn the ignition switch OFF for 10-15 seconds and flip the tank selector to the right tank then switch the ignition back ON.  Can you hear the fuel pumps run in the tanks for about 2 seconds and then shut OFF after switching the ignition ON w/o cranking?
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)
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