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How do I by pass the security mode that won't let me start my 1990 cadillac diville for 5 to 10 mins when it comes on

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This is a very common problem on GM vehicles. Check out this link for info on the subject and some good DO IT YOURSELF solutions. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on May 26, 2011

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Posted on Jan 02, 2017

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1 Answer

How do you fix a 1990 cadillac coupe deville anitheft system


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

http://vatspasslockpasskeysecurityhelp.yolasite.com/

May 03, 2012 | 1983 Cadillac DeVille

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How do I reset the security theft on a 1990 pontiac bonneville


This link will help you out. Has alot of information on the system.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Dec 22, 2011 | Cadillac DeVille Cars & Trucks

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Daughters Car Won't Start


did u disconnect he ground on the battery,berfore changing th swicth, ther are two fuses / relay . one under dash and one under hood. if ther good ther is a back up fuse to comp. 7.5 read cover to be sure . take out for 10 min. replace and see if it helpes if not u may hav melted wires somewere. solenoid to to starter. good luk claymister

Dec 01, 2011 | 1990 Ford Thunderbird

1 Answer

2003 Cadillac CTS - Car starts then when you try to start car after drving and trying to start the car 1 hour later the car won't start then in 2 hours it will start replaced battery and had a tuneup


Thinking you have a pass lock problem. In the ignition key and tumbler,
all I can do is send you to the dealer ,watch the security light,it's actions will help diagnose the
trouble . My money is on the Ign. switch

Nov 07, 2011 | 2003 Cadillac CTS

1 Answer

CAN'T BY PASS SECURITY ON 94CADDILAC , won't allow car to start.it will tell us to wait 3mins then start car .it usually has worked now it won't.We have even disconnected the battery to reset!


Hello: On you computer type in how to by-pass the VATS system. If you follow the step by step procedures your car will start unless you have problems other than the Pass Key 1 system. ie: fuel or ignition. You have to troubleshoot a problem before you can repair it.

Sep 17, 2011 | 1994 Cadillac DeVille

1 Answer

My security light on the dash won't turn off in


Sound like the ANTI-THEFT system or PASS-LOCK system is armed; in your Cadillac Owners Manual (need yahoo register for free) could find this and other details...

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Hope helps (remember to rate and comment this answer).

Aug 19, 2011 | 2001 Cadillac Sts

3 Answers

Ive got a 98 cadt diville thats over heating i put in new radiator thrmastat and water pump but its still over heating


you might have a coolant air lock! most cadillac have a bleeder screw on top of the thermostat housing, loosing screw only when engine cold pure coolant in wait untill coolant start running out the screw hole rapidly then tighten screw, start engine let it run your fan should start working too, GOOD LUCK

Jul 06, 2011 | 1998 Cadillac DeVille

1 Answer

Have a 93 cadillac fleetwood, changed key cilinder and computer, but pass key fault light still comes out and does not let engine turn on.


The security system is keeping the engine from starting. In order to manually learn the security, you should try the following. With a fully charged battery, and all accesories, including headlamps, and dome lamp off, turn the key on, crank the engine for a second, then release the key. Leaving the ignition on for ten miniutes, the security light will shut off. turn the key off, back on, then repeat. This needs to be done 3 times, after 30 mins, try starting the engine. It should have relearned, and start up. Good luck...coop

Dec 10, 2010 | 1993 Cadillac Fleetwood

2 Answers

1990 cadillac wont start


It's your PATSII security system...Any good mechanic should be able to fix this for $50-100 WITHOUT REPLACING THE BCM (tell them I said so).
Good Luck

Jun 23, 2009 | 1990 Cadillac Eldorado

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