Frequently will crank but not start

My Chevy cruze anti theft locked on me it was as simple as my key was faulty used extra key and guess what engine started key was damaged

One possibility is a blocked fuel line or filter. It basically runs out of fuel and you have to wait for it to come through slowly. The other possibility is the ignition system is losing spark as something heats up. You have to wait until it's cooled down before it runs again.

check your securty light next time this happens if it is on you key or lock cyl is not reading the key

1. The engine does not have any fuel system screw bleeder!
2. The only one way for start the engine is to fill up the tank, then turn the ignition key in "ON" position for 4 - 5 times, wait for 10 seconds between two attempts, without cranking engine.
3. After that push the clutch pedal, (if exists), to the floor, and the accelerator pedal to the floor too. Now turn the ignition key in "ON" position, wait for 5 seconds, and crank the engine for maximum 40 ... 50 seconds. Wait for 60 seconds between two starting attempts, in order to save the battery & starter motor.
4. Repeat the step no.#3 until start the engine.

IMPORTANT NOTE: DO NOT TOW THE CAR IN ORDER TO ATTEMPT TO START THE ENGINE!!!

It's flooded like you say.
If it's really flooded, you'll have to remove plugs and dry them off.
Install them.
Now when you crank engine, hold gas pedal to floor.
That will stop gas from spraying into engine.
You need to get the gas out of the engine for it to start.
Crank for 20-30 seconds with pedal to floor. Do this 3 times waiting 2-3 minutes inbetween cranks.
The starter needs to cool down.
Then after that start normally and see if it will start.
Remember if it will not start after 2 attempts, then the possiblity of it flooding is there and you'll have to clear out the gas by holding the pedal to the floor again.

When it dies..check for spark. You could have a component in the ignition system failing when the car gets warm.

If you don't have spark then you might need a new ignition module. The distributor cap and rotor should be checked for traces of carbon. This would be evidence of a leaking cap.

If you get check engine codes then you do have some sensors going out of range or failing all together. P0446 is an evap code right?
Make sure your fuel cap isnt plugged up and all your evap lines are ok.

After you replace the ignition switch turn the key to start the car and release leave the key were it stops after trying to start wait 10 minutes until security light goes out turn key to full off position then repeat the above procedure two more times for a total of three on the 3rd attempt to start car wait for light to go out then turn key to full off positoion wait 10 seconds then try to start car body control module should learn new pass code and the car should start.
Big john, J@J Automotive

have you tried the spark plugs and fuel injectors as well as the air intake system?

no fan comes on when engine cold start up .but it will come on when you turn on air conditioning or defrost on .if engine idling a while when temp get 190 degree the fan will kick on.if over heating you got air in system .wait until cools check coolant add more .crank engine let it idle few. minutes when start warming up turn off engine wait a while before removing radiator cap so you wont get scald.add more coolant .crank it again starting warming up turn off engine wait a while .add coolant .keep doing this procedure until your coolant stop dropping off .if you do this more than 6 times you got a leak some where.check crank level for signs.if oil level higher than normal.if everything looking good.when engine cool make sure add coolant to over flow jug cold level mark.

Could be the Crankshaft positioning sensor. Had the same problem with my 2001 DTS. Cost to replace: About $200 from a non-dealer repair shop.