2001 olds alero. put in a new fuel pump, filter and relay and get no fuel pressure at the fuel rail. Now what?

My son 's car just quit in store parking lot.  I figured out it was not getting fuel
and put in a new relay, pump and filter.  Still no fuel to fuel rail.  Also
discovered that his key doesn't always want to turn.  Could this be a security
system problem or have i overlooked something.  I double checked my
connections on the pump when I put it in.