Car will turn over fine but won' start, as if it is starved for gas. the car is full and i have also checked the fuse for the fuel pump and it is fine.

why not bypass the fuel pump relay with a jumper wire / fuse and see if it will start that way

Maybe pressure regulator

If you have voltage at the fuse and relay, and at the pump, but no fuel pressure, I would say the pump has died or the tank is empty.
Have you checked for voltage at the pump yet ?

what about a broken timing belt
cam shaft /crank shaft position sensor or failed immobilizer

Fuel in the tank does not mean fuel in the injectors. Run a fuel pressure test to see how much fuel pressure there is. Also check the injector pulse with a noide test light. The injectors may not be getting a ground to fire because of a bad fuse.

To confirm that is is the fuel pump at issue here get a can of spray starting fluid and next time it won't fire up spray it into the air intake hose of the engine while someone cranks the engine over, if it lights right off then the pump may be the problem. A clogged fuel filter may cause loss of power but seldom if ever a no start.

My first thought is to check the fuel pump operation.
Check to see if fuel pump is getting power.

This is how I check the pump.

Usually there is an in-line fuel filter that can be removed.
While its removed...bump the starter to see if gas shoots out the gas line.
If not, there might be a clog at the pump...or the pump needs replacing.

Hope this helps...

TURN ON IGNITION SWITCH LISTEN FOR FUEL PUMP OPERATION.YOU SHOULD HEAR FUEL PUMP RUN FOR 3 SECONDS AND TURN OFF.IF NOT CHECK FUEL PUMP FUSE AND RELAY.IF ALL IS GOOD CODE SCAN FOR PCM FAULT OR THEFT SECURITY FAULT BEFORE BUYING A NEW FUEL PUMP.

You can check to see if the fuel pump is bad..Remove gas cap and listen into tank while another person turns key on.If you here a buzzing noise the fuel pump is most likely OK...If you don't here anything Check owners manual for fuse location and check to see if there are any blown..There is also a fuel relay fuse under the hood

yep i seen it in happen .i was at a gas station a guy drove car to the gas station on empty.he fill his tank up .could not get it to crank .some cars you have to restart fuel pump when run out of gas. like chrysler.you use a scanner. but chervrolet you run low over heat damage the pump.it has to stay submerge gas to keep it cool. check fuel pump pressure.it should be 41 - 47 psi.