Gas gauge is not working, how do I fix? - 2001 Buick LeSabre

check for a common fuse( Instrument panel)

It may be the sending unit in the tank that needs replacing. Here's how you can check: Turn the key on and disconnect the sender unit at the gas tank. Ground the sender unit's wire with a jumper wire from the truck's harness to ground. Watch the gauge. If the gauge on the dash is good, grounding the sender wire will cause the gauge needle to react and should move to full. This would indicate a new sending unit is required. If the gauge doesn't move when the sender unit is grounded, the gauge is bad and needs replacing. Pull the instrument cluster out to replace the gas gauge. Likely any old ford gas gauge might work-back then, there were not so many production changes.

The fuel sending unit is bad inside the fuel tank . You have to replace the whole fuel pump assembly to repair this problem .... Very common problem i bet i have replace 100's of these to fix the gauge .

If just the gas gauge is the problem then you most likely have a defective fuel level sending unit. The fuel level sending unit for the gas gauge is located of course inside the gas tank.

Talking about fuel gauge issues and how do you how do you diagnose, ... is the dash unit right here, and obviously the gauge doesn't read correctly. ... to fix the fuel gauge, so you can actually fix the fuel gauge electronically by reflashing the program. ... How to Troubleshoot a Malibu Fuel Gauge & Dash Light Not Working ...Could be a bad fuse - fuse # 17 is a 15 amp fuse for the fuel gaugeCould be a bad float on the fuel gauge sending unit inside the gas tank ( it's with your electric fuel pump ) If the float gets a pinhole or crack in it , the float fills with gas and sinks so the gas guage reads empty all the time Could be a wiring problem

If all your other gauges work, more than likely you have a bad sending unit in the gas tank or bad ground to the sending unit.

If it would of been only your speedometer I would of tell you to replace your speed sensor. But in this case you gas gauge stopped working as well so I would recommend taking your whole cluster to a mechanic he will try to fix those two items, otherwise you will need to replace the whole cluster, same thing happened to me. Good luck

My gas guage, speed odometer and tempiture does not work
The speed odometre is reading 9999999 what should i do

Have the computer checked

sounds like your missing a ground somewhere.