I had the gas gauge problem, too. I got my 2001 XTerra SE end of December. The gauge never went past 3/4 full. After a few fillups, the gauge was stuck on full. I took it into the dealer to get it fixed (under warranty of course) and they said my "plunger was hung up on something inside the tank??" Anyway, they rerouted it and it's working fine, now.

G-Man in California
2001 SE Black

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