Why is it hard to start sometimes as if it's not getting enough gas? 5.3 liter, 120,000 miles, Z71, 4WD. Haven't replaced anything yet. I suspect fuel pump since gas gauge has been acting up for over a year. Always reads empty for a little while after a fill up then it usually works fine until next fill.
Common problem on that model chevy. Check the fuel regulator to make sure is not leaking. Allow it to run for a few minutes and shut it off then pull the vacuum line off of it. If there is fuel in there that it is leaking. If that checks out it will most likely be the fuel pump. If you cycle the key a few time then it starts fine it will be the pump
SOURCE: Fuel Gauge
I believe chevrolet has a recall on this problem having to do with wiring repair at the tank.
SOURCE: 1999 Monte Carlo fuel gauge stopped working
Hi there. If the fuel gauge is the only one acting up, its probably a loose or corroded wire on top of the gas tank where the fuel pump sets in. It could also be a loose wire on the back of the gauge, which is easier to get to so you could always check that first by popping off the dash pannel and pulling out the instrument cluster and looking for a broke wire on the back of the fuel gauge. But if I had to bet I would guess its on the other end by the fuel pump. Worse case sinario, maybe a bad sending unit.
SOURCE: faulty gas gauge
Have a 2001 chev and it does the same thing. It is a common problem. It is a faulty in tank sender, not the fuel pump. You can just replace the sending unit by removing tank. If you want more information please get back to me.
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 chevy silverado 4.3 liter v6 fuel gauge not reading properly
Common problem on the 03-06 Silverado instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Silverado fuel gauge problems
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