what can be wrong in my car with the gas tank. on 2007 Chevrolet Equinox

when I put gas in my car the arrow goes up and down it doesn't show me how much gas is on the car.

by in Clinton, CT on March 07, 2013
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1 answer
ANSWER by , March 08, 2013
the fuel sending unit is bad, but they only come as a complete fuel cell. good delco part installed between 700.00 and 900.oo parts and labor