ok guys and gals. heres one for you. my 2001 coupe fuel guge shuts off. it works fine when I drive normal. Now when I drive with my foot in it , the fuel guge goes to empty no matter how much fuel is in the tank. its been back to the dealer multi times. They have replaced the fuel sender, installed a 10 ohm resistor on the sender but we still have the problem. If I remember right the code was 1345. the only with to get the gauge working is to clear the code. The dealer had flashed it to GM. the car has a aftermaket program. GM says it the program. Called the people who wrote the program and they no one else with the problem. Has anyone ever heard of this before. they have also put techron in the tank , with no results

 

im having a similar problem. Check my post..

 

Use SEAFOAM or TECHRON in the gas tank.