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Anonymous Posted on Jan 03, 2011

1990 cadillac deville try to start an security code comes on wont start

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  • Expert 334 Answers
  • Posted on Jan 21, 2011
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Joined: Jan 24, 2010
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The problem might be your Vats security system. This causes the car to either "not start" or "shut down" while running, or start for 5 seconds and then die. (depending on the system) If the security light flashes, i guarantee that this is what the problem is. 1st trick, (if not starting) turn the key forward 2 clicks till right before it would normally start, leave like that for 10 minutes. ( no less ) After 10 minutes, turn key back then forward and your car might start. I did this in my regal for more than a year. If its shuting down while running, im sorry i have no quick fix...

Cheap fix: Bypass the chip in your key. Temporary, but effective. Until the TDM (theft deterrent module) in the dash poops out, then you're kinda screwed. I was told that these types of key security systems have a 7-10 year life span. Sucks for us. This link explains the "Key Issue" pretty well.
----- http://vats.likeabigdog.com/


Never worry again fix: Bypass the whole VATS/Passlock/passkey I or passkey II system entirely. Literally take it out, and throw it away. I just did this in my Regal. Took about an hour. Took longer to find the thing than it did to fix the problem. For a list of cars effected by this problem. See the NEWROCKIES link on the right side of their page......... They sell a unit for 200 bucks to totally bypass this system FOREVER. life time-money back and all that. Finally did this in my car. Well worth the 200 if you've looked into getting this replaced... Anywhere from 600-1000 bucks.
----- http://newrockies.ca?ap_id=judd0081
----- With this fix, you can take that whole Vats, passlock, passkey **** system out of your car all together. Good info on both sites

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Is possible that ypu need to reset the security system, I suggest check on the 1999 Cadillac Deville Owners Manual this procedure.

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Yes, go to this link for 2 different ways to bypass your antitheft system.

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This has nothing to do with the windows, probably just bad luck. Everything you need to know about the security system on your cadillac is on this link. Your system is called VATS.

http://vatspasslockpasskeysecurityhelp.yolasite.com/
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I just replced my starter in a 1994 Cadillac deville and we think it may be the security or theft system for the car. And, now the car will not start. And the dash says to "wait 3 minutes" and try again...

OK. Make sure that the black and silver resistor on the key is clean of grease or moisture that can cause the security system to reject the key as a valid one coded for this car.

If you replaced the starter, hopefully you disconnected the battery first, so that there would not be any jolts of electricity or shorts when turning the wrenches or turning the bolts with the socket and ratchet.

I have a 1990 Cadillac Deville and a 1997 Cadillac Deville which have a similar key. Yours is probably similar in look and function to mine.

Another thing to mention, is that if you hear a click or it tries to turn over but doesn't, your connections may not be as good as they should be at the starter coming from the battery.

Or, finally, the starter might be defective, even though it is newly rebuilt or built.

So, I hope this helps.
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