Question about Cadillac DeVille

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I can start the car and go to get gas when I try to start it again sometimes it takes 1 hour before the security will reset. How do I disable or remove the alarm system.. On the window it shows to be a sound box add on. Also the togle switch under the dash will not disable the alarm to enable it to start. It is quite inconveinent. 1993 Cadillac Deville.

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  • longsofmccam Dec 06, 2010

    I found the power wires to the add on alarm system. The power wire was under the dash on the reivers side by the steering colum. I removed the whole add on system. The car starts any time and no problems having to wait anymore. The add on system had 3 fuseable links and 4 relays along with it's control box. The only problem now is the radio doesn't work ,power door lock on the passenges front door doesn't work and the remote key fob doesn't work....I'm still happy the car starts anytime I need it to.

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Your cadillac has a factory security system too and it does n't have to be the add on system. But lets say it is the add on system. remove the under dash covers so you can see the under dash wiring. GM does a nice job of making their wires nice and neatand add on installers make a mess and tape and tie wire their added stuff on. Looking for such mess find the control box. it should have the sound box name on it. pull it down where you can see it and the wires connected to it. look for the GM wires that got cut to connect this device. remove them from the device and connect them as before the device was put in they usally only cut two wires and just add connectionsto others not cutting them this thing will porbly still do some of it's functtions if you just fix the ct wires and leave the rest of ti hooked up. or just unhook it all but make sure theres no GM wires unhooked. (match colors)

Posted on Nov 07, 2010

  • John P Schwantes Jr Nov 15, 2010

    i CAN'T TELL IF YOU MANAGED TO FIX THIS PROBLEM WITH YOUR CAR POST SOMETHING ABOUT IT AND i'LL SEE IF i CAN DIRECT YOU TO THE ANSWER TO YOUT PROBLEM

  • John P Schwantes Jr Dec 06, 2010

    The passengers front door lock, may be the acuator motor has worn out or the wire is bad. The door panel off and the acutor motorhas an electrical connector on it, Before saying it's plumb bad just work the plug while trying to work the lock switch. If you have the door panel off the door switches will need to be connected before it'll work correctly. If it still does'nt operate, disconnect the wire and test it with a test light. One wire will be ground and the power will come on the other wire working the switch. The controller youremoved was also connected to the door lock and also the door unlock wires. Most of the time they use a fold over type wire tap. Once you open this tap to remove the wire the wire it'self might be cat though, If the locks work with the door switches you know the fuses are good. The factory remote uses this same wire to lock and unlock the doors right where they tapped the wires the remote reciever is near their it's possible that they removed the fuse for the remote as they added a different one< I do. The radio has the engine control system's monitoring reader in it so it'll be nice to get it working On the drivers side front fender where the main fuse panel is if you take the big cover off that covers all the relays and other fusable links you might find one removed or blown and the other place to check is in the trunck on the drivers side under the interior trim, theirs another fuse box there. The body computer and it's relays and fuses are also located in the trunk and you need to remove the trunk liner cover to get to them. with the liner out it's on the back side of the rear seat back, in the trunck, thiers relays and another fuse panel, It;s best to check these with a test light as pulling theem and looing at em all will take a lot of time. Most are key on fuses but some are powered all the time. It won't hurt anything to put fuses in all the empty places and replace all the blown ones and then go around and see what works. Do put all the covers back on as this area is a good place for expensive damage that's why their in the safest place in the car ( back of the rear seat) They though more about them than even you. Yawl rate senser is here, and the traction control computer and the ride control computer. Think that sounds expensive ( it is)

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