Oldsmobile Alero Won't start

Question: 1999 Alero starts for a second then dies like it is not getting gas. 2.4L 4 cly.
 Mechanic: Can you keep it going by hitting the gas pedal? Is the theft / security light on?

No, it dies immediately lights are not on but this has happened before with light on turned key on for ten min and it started. When the security light was flashing car would not turn over or start it will start first crank but will not stay running it did this on Sunday but later started and did'nt have a problem for 2 days.
 OK. You have a theft problem. Either the Passlock sensor or the ignition switch. Do a search at the top of out website pages for "Passlock sensor" and you will find several articles.

Question: My Oldsmobile 2002 Alero ignition key won't turn. The key will come out, it just won't turn.
 Mechanic: OK. Try the key in the trunk to see if it is just a bad or bent key. If it works in the trunk, then the Oldsmobile Alero ignition lock cylinder needs to be replaced.

Yes I tried to open the door with the key and the trunk it works fine or security system might be an issue because the security light was on and theft lock light was blinking on the radio. Can we just bypass it?
 The security system will not prevent the key from turning. You can try to spray some WD-40 in the ignition, turn the key back and forth several times quickly while tapping on the key with a small hammer. This will sometimes free it up for the time being.

ok. I tried WD40 though no help.
 OK, try the other idea with a small hammer. If that does not work, you are going to have to replace the ignition cylinder and then do a theft relearn procedure, since the the theft sensor is on the cylinder.