why is my gas hand showing half tank but over flowing on 2002 Chevrolet Blazer

when i first got my 02 blazer extreme we would go to fill it up when the gas hand hit a half a tank anything more than that would pour out the bottom of that truck so we would have to stop putting gas in and would be able to drive 133+ miles so we started judging gas by mileage well may 25 we were on the highway and we had ended up[ running out of gas and since then my gas hand hasn't worked can someone help me?

by in Franklin, OH on June 05, 2013
3 answers
ANSWER by on June 05, 2013
Most likely the fuel level sensor is faulty.
ANSWER by on June 05, 2013
agree with miles auto. gm cars when fuel level gauge sensor goes bad next will be your fuel pump. i would change the fuel pump now because they are together in one assembly and solve your problem.
ANSWER by on June 05, 2013
Sounds to me like you need a new tank or fill hose and 'maybe' a pump module, since tank will be removed. Ever fix the leak? 133+ miles will be about 1/2 of a tank of gas, so seems your gauge was right!!!! I get approx. 300 mi. on a full tank in my 2000 Blazer.

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