Hi, I have a 2001 GMC sierra 1500 4x4 5.3liter engine. I filled up the tank, and topped it off. Gas started to pour out of top of tank. Not where the gas cap goes. On other cars, I would top off, and no pouring out of the gas tank, but from gas cap. Could the gas tank be cracked? Then I drive home, park it for 2 hours. Tried to start it and nothing. Lights go on, gauges work, power everything works. But doesn't crank on. Each time I try to turn it on, I could hear the fuel pump working. Could it be my starter? I hear the starter motor running but not the cillinoide. And each time I turn the key, it blows out my crank fuse. What's going on with my lil monster?

SOURCE: cranks but no start

check the fuses inside on the right hand front kick panel

SOURCE: 93 gmc sierra 5.7 liter engine, injection carb,

you say you replaced the fuse, but does the fuse have power? the gray wire at pump should have power when cranking, or for 2 seconds when turning key on. At fuel pump relay, put power onto gray wire, the pump should run if the wiring is good. if it doenst run then ck for power at fuse while power is on gray wire.

SOURCE: 2000 1500 Sierra will not stay running step on gas...

Replace the fuel pump and fuel filter to correct the problem you are having. Without the proper fuel pressure the engine will not run at all. Hope this will help you. You might check the fuse/relay panel for a blown fuse or relay in it to make sure you are getting power to fuel pump before you go to the trouble of removing the pump and fuel filter. Hope this will help you.

SOURCE: I have a 2005 5.7L

do a fuel pressure test and check for injector signal wiith a noid light

Muntejaya Ginting

• 10422 Answers
• Posted on Nov 20, 2010

SOURCE: Hi there. so the problem

The gas pump and gas gauge are two different things and working independently.
Gas pump will pump the fuel by trough hose line to carburator and also there should be another hose return from carburator to tank. So it is very easy to check whether your pump work or not. detach your your fuel hose then turn your ignition key to ON ( no need to crank). See how your pump work through detached hose.
Gas gauge triggered by floating sensor in your tank. In many case by the time the sensor is going idiot that tell your gauge the wrong thing.
So need to change your gas sensor in your tank.