We can't put more than $20 in the tank before it starts to over flow, with the gas gauge on empty when we start pumping. Then the gauge reads 3/4 tank. When it runs down to half it jumps straight down to empty

autodr

• 260 Answers
• Posted on Nov 16, 2008

SOURCE: 2006 GMC Envoy XL gas guage

most likely a fuel sending unit problem in the tank. could also be problem in dash but sending unit is first suspect

SOURCE: gas gauge reads empty but tank acts like it's full

I also have a 04 with a 1.8L. same problem. I took the fuel regulator off. It is a black box behind the rear tire under car. It only has 2 bolts to take off. After that there is a couple of vent hoses from the tank going to this box. Unplug them and 1 electrical connection. The electrical connection and one vent is connected to a T connection on the box that you can unplug by twisting on the T. Take that T off and look inside where you unplugged the hose on this T. There is a spring and a little plunger inside this tube. The plunger gets stuck. I took a little screw driver and some PB blaster and worked that plunger back and forth a couple dozen times and it unfroze. Put it back together gassed up just fine. I did not look but I was told regulator can be replaced for 200$. But a can of blaster is cheaper.

SOURCE: 2002 Chevy Suburban: Fuel gauge reads empty, tank is half full

Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.

SOURCE: 2001 chevy silverado 4.8 gas gauge not working properly

Fairly common problem with GM vehicles. The sending unit in your tank has a small circuit board that an arm is attached to which moves up and down according to your fuel level. This circuit board and arm are not making good contact. Unfortunately the only good solution is to replace this part.

Testimonial: "thought probably that was it but better off replacing whole unit .i was for for gauge proplem thanks. "

SOURCE: 2005 kia sorento Fuel Gauge says empty with 1/2 tank of gas.

Fuel sensor is not working well. Just changed mine today for the same problem.