why won't my 2004 impala start?? The car cranks but the motor won't start..

Already did the new security program that took 30 minutes with the key.. the car did start once then turned the car off and tried to restart again and it would crank and not start again..

IS the security light in the dash turning OFF or flashing while cranking engine???

after trying to start the security doesn't show in the LCD window..

Fuel pressure & ignition spark test required.

Engine is getting fuel and I get sparks on all 6 plugs

'IF' it has the correct amount of fuel *PRESSURE* - adequate spark to spark plugs and good compression ... The SECURITY SYSTEM has disabled the injector pulse .. Hands-on 'testing' is required! http://repairpal.com/repair-shops .