1996 cheve lumina . gas pump, when I turn the key

Bad fuel pump, clogged filter or line, clogged injectors, no power or ground to injectors .

Could be several things....but i need more information. When it doesnt start, does it crank or when u turn the nothing at happens other than the relay?

Does it turn over like it wants to start?
If it does then put about 5 gallons of gas in the tanks and turn the key on. You should hear the fuel pump come on. It kind of sound like a humming sound coming from the rear of the car. If the pump in coming on then it is pumping gas to the motor. Torn the key on and off a few times and then try starting it. It may take a few times of trying this to get the gas pumped up to the motor.

Replace fuel pump is the answer given by those who don't really know anything or just want to sell pumps. Too many peole just replace there pumps only to find it doesn't solve the problem. You have to diagnose the problem. This could be bad fual pump relay, open in fuel pump circuit, ground problem in fuel pump circuit. Check voltage at connector near fual tank. low voltage here indicates a possible wire or relay problem. Check resistance to chassis ground from ground pin at connector supplying ground to pump. Any resitance over .3 ohms indicates a ground problem. Check resistance across the pump motor, infinite (open) resitance indicates a bad pump. normal pump resistance is usually in the range of 2 to 4 ohms or so (Check manufacturers specs to get your pump motors resistance). If you do pull pump, check operation by putting 12 volts (correct polarity) across the original pump before buying replacement. If you hear (or feel) pump run, problem may be somewhere else (not pump). With a little well thought out diagnistics, you should be able to quickly pinpoint the real problem, even when it just looks like a fule pump problem.

first turn the key on and listen for the fuel pump to come on for 15 sec.this is to prime the system before you crank the engine.no sound,with only a rubber mallet( no metal hammers )hit the bottom of the gas tank,no fuel pump operating go to the fuel pump relay and remove then test for (2) 12 volt power supplies with key on,if ok check ground at relay if okay remove gas from tank and drop gas tank to check for voltage at pump.replace pump if 12 volts is present.

check for trouble codes first. it may have a trouble code to lead you in the right direction. Also check fuel pressure.

Sorry you have to drop the tank.

After you put the new fuel filter back in, make sure your fuel pump is actually pumping, either by listening for it to start when you turn the key on or by cracking the fitting at the fuel rail (after disconnecting your ignition hot lead first) I assume that you have checked the fuse/relay... rick

If you had a strong stream of gas shooting out then you may have an fuel injector problem. Possibly a clogged injector or bad injector.If the stream of gas was weak replace fuel filter first and test again.If problem persists check pump fuse then replace pump. sorry for miss reading your post.