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2007 Buick Rainier Question: gas gauge problem



jim5542, 4.2L 6 Cylinder, Grand Blanc, MI, March 28, 2010, 14:14

gas gauge drops off to empty after only four or five gallons are used. when you fill it up it reads full again until 4 or 5 gallons are used. it started doing this at about 51,000 miles.

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  • Answer #1

    March 28, 2010, 14:27

    Most likely your sending unit is going out, to correct this you will probably be replacing the fuel pump assembly.

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