Why does my gas gauge flip flop when I fill up?
Why does my gas gauge flip flop when I fill up? Most fuel sensors don't like an empty swimming pool so when the fuel level gets too low they send you a signal to fill 'er up. Unless, of course, the sensor is defective which appears to be the case in many GM vehicles. Why does my Trailblazer gas gauge keep flopping? This is especially true in higher mileage vehicles. The problem is due to defective drive motors that fizzle out on the circuit board over time. Because this is so widespread, repairs are sometimes covered under warranty if your...