We changed the fuel pump on our 05 cavalier, but cannot get it to crank, is there something else to check?

no power to the fuel pump?? i suspect that their is something wrong with the immobilisor ,try the spare key first before you go any further ,maybe the chip in the key ahs dropped out ?

Maybe the antitheft system. Read thru this link

http://vatspasslockpasskeysecurityhelp.yolasite.com/

I helped a neighbor, she had a dodge van. She thought the fuel pump was bad, it had set up for months. I noticed the fuel pump and A/C relay were the same. I swapped them out and the van cranked. Just a thought could it be the fuel pump relay.

Swap the fuel pump relay with the A/C relay and see if the problem continues. the A/C relay and the fuel pump relay are the same. If it continues, the fuel pump may be getting overheated and will intermittently shut down. The CPS will certainly do something similar but you wouldn't have spark either.

check the fuel pump relay out

change the fuel pump relay in the power distribution box. it going bad

check intake for vaccum leaks,the gasket also and egr valve, thats alot of parts to have replaced without diagnosing first, if there are no fuel leaks and you said all injectors were replaced then you have a defective fuel pump, also these engines had misfire problem because of dirty injector but you replaced them so count that out. good luck.

did you check you fuel filter and your fuel pump? i had the same problem and once i replaced the fuel filter its been fine since

it sounds like the check valve in the fuel pump is letting the fuel bleed back into the tank

check to see if you can hear the fuel pump running.just cycle the key to the on position but dont turn over the motor you should hear a humming sound come from the fuel tank.if no sound check your fuses if all ok could be a bad fuel pump
or check to see if you have spark if no spak then it could be the module inside your distributor cap.it also controls the fuel pump.
samboiv