Gas tank leaking

Asked by Jun 20, 2017 at 02:08 PM about the 1996 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB

Question type: General

Gas leaking from top of gas tank. Only leaks
when tank is filled above a half a tank. What
could it be? It's a metal tank.

1 Answer

1,720

I had the same problem on a 1997 ranger. It's where the filler tube meets the tank, there is a gasket there that can crack / break. They will need to lift the bed off to access it, I was quoted $500 for the fix. You can live with it by driving on a quarter tank and driving without knee jerk movements. I highly suggest fixing it because the gas is also vaporing out...it could catch fire. Cough it up and fix it.

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