Quote:
Originally Posted by Hulk Will Smash
While we're on the subject, should the fuel guage be reading both tanks? I can't remember how it was on my 77 c20 and my 87 r30 is only showing the fuel level in the left tank.
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I just fixed that problem with my 89 R3500. The sending unit was bad on one side of the truck. To answer your question, yes the fuel gauge should read both tanks levels. Another thing to check, get under the truck and have a friend start it and switch the tanks to make sure the selector valve is moving. If not, change that before you drop the tanks for the sending units.