Changed fuel pump in gas tank 1997 buick lesabre now gas guage is messed up

You have to pull the fuel tank to replace it , go on YouTube an check it out a video is better then directions in words !

check the fuel line return if is clear maybe is blocked and do not retur gas to your tank and check the power to pumpand make sure you have good ground . bad ground pump going down fast and some times cheep parts is = lost money

if you did nothing wrong replacing it then most likley the the level sensor is jammed. You will need to take the tank back out and inspect.

well either the fuel sender got caught on the tank baffle or your other sender was going bad

Fuel Sending unit in gas tank. If you replace it ,do the fuel pump while your in there

maybe check for a bad relay controlling the fuel pump

I have a 2001 and just replaced the fuel pump assembly in the tank because the fuel gauge didn't work or worked irratic. After talking to the partsman it sounded like this was common. The contact for the sensor wears away and looses contact. You will see that the new fuel pump module has different type of metal wiper contact. As for the heated seats, I have an issue with driver side also and haven't had a chance to look into it yet.

Sounds like you need a new fuel pump or a fuel pump relay could be getting hot and cutting out

The gas tank will have to pulled out and the fuel guage sending unit replaced, they sell just the sender in the aftermarket, DORMAN Part # 692087 $115.00, the GM dealer sells only the entire module, $384.00, the labor is time around 2 hours.

its the electrical connection at he fuel pump,if this is ok ask if they replaced the strainer on your fuel pump,your fuel pump is inside your gas tank ,you have to drop the tank to service,most fuel pumps are not warrantied if you dont change the strainer,when your car shuts off the sediment on the strainer falls back into the tank,but when you run your car and it sucks up the gas thru the strainer to the pump it clogs the strainer and the fuel pump cant pump,you shoiuld find out if they changed this because your forcing your fuel pump to work harder,was it a new fuel tank or used one that they put in