1999 GMC Sonoma

Electrical problem
1999 GMC Sonoma 6 cyl Two Wheel Drive Automatic

The issue is the gas gauge is not correct. When the float is all the way up, I show a little over a 1/4 of a tank of gas. So when I'm at a half tank, my fuel light lights up and the gauge is near empty.

So I thought it would be the fuel assembly. I replaced the fuel pump assembly twice. I checked the pump, 100 ohms when the float is up. 0 when down. Book says pump is good? Help, please. I guess, if I can't fix this, I don't have to worry about running out of gas.
September 5, 2010.

Check your ground and see if you are gettinga blinking light to the sending unit. If you aren't then you either have a bad connection of the gauge may be bad.

Sep 15, 2010.