I own a 2001 Cadillac Deville. About a week ago, I ran out of gas. Once I refueled, it turns over but won't run unless I use starting fluid. And even then it won't stay running.

SOURCE: wont' start

can you hear your fuel pump turn on when you turn the key i had a car ran it out of gas and it burnt out the fuel pump.

SOURCE: lose power steering fluid in a 2001 cadillac

Sounds like your rach and pinion is leaking somewhere. look for wet spots on the stearing components..

SOURCE: 2002 Cadillac DeVille wont start (even w/new battery!)

well first off, check the glove box light blub, make sure it shuts off when you close the door, check it by pressing the switch with your finger to make sure it shuts off, also check under the hood for the light there if there is one, pull the bulb, and the same thing for any bulb in the trunk, then check again after a day to see if the battery dies, if it is dying while the vehicle is not running then it is the battery, if it is dying after it is running then it is the alt. you can check that also tho with a multimeter set to the DC volts setting, place the black end <the ground to any grounded area> and the red end <the hot lead to the back of the alt. > it should be reading higher then 12 volts, normally should be a higher reading then 12 volts... if you are getting a lower reading or just 12 volts then the alt. is bad and needs to be replaced...hope this helps you out...

SOURCE: 2001 Cadillac Deville problems starting

I have had the same problem and I have come to the conclusion it is the security system. After 3 minutes the car will start so there is nothing wrong with the battery or starter. I have had it to the dealer a few times and they cannot solve it. It may be the locks on the doors and they may not be resetting properly. I have learned to live with it.

SOURCE: 2001 Cadillac Deville won't stay on after turning

EIther the IAC or throttle postion sensor is dirty or faulty. Or leaky vacuum hose somewhere. As long as it is not missing and running weird, then you may have bad coil packs.
You can go to autozone.com and register for free online repair manual for your vehicles if you need it.

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