theft system?

Possibility hat the ignition cylinder wiring for the theft system has opened, and a valid key value is not being received. Proper repair is replacement of the cylinder with new keys, but there are other options available. Try this guide to reset it

https://www.2carpros.com/articles/how-to-reset-a-security-system


Please run down this guide and report back.

I CANT START MY GIRLFRIENDS CAR SAYS SOMETHING ABOUT ANTI THEFT ....

[quote:f22469f62a="dalemack"]Computer problem
1997 Cadillac Deville V8 Front Wheel Drive Automatic 125000 miles
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I CANT START MY GIRLFRIENDS CAR SAYS SOMETHING ABOUT ANTI THEFT ....[/quote:f22469f62a]

Ign switch is bad

it has a theft sustem problem, becuase the car was not moved for 6 months. when i did try to turn the car back on, itwould not star. it shows theft system problem. can anione help whit this dilema!!!!

U1064 :: LOST OF COMUNICATION WITH DIM
U1016 :: LOST OF CLASS 2 COMUNICATION WITH PCM
B2750 ::CURRENT PASS KEY DATA COMUNICATION ERROR
B1983 ::AIR MIX DOOR THO MOVEMENT FAULT
U1255 ::CLASS 2 COMUNICATION MALFUNCTION (serial data line malfunction)
c1276 :: DELIVERED TORQUE SIGNAL CIRCUIT MALFUNCTION

this codes come from my cadillac deville 97 99,000 miles. on the dash bord shows THEF SYSTEM PROBLEM. CAR MAY NOT RESTAR.

On the information read out it has the following:

THEFT SYSTEM PROBLEM

CAR MAY NOT RESTART

SERVICE AIR BAG


Also lights do not work, if car starts it shuts right off, windows do not work, door locks do not operate, opening of trunk or gas door doesn't work.

This has happened before, had to be towed to a mechanic, he played with and seem to fix he thinks by repeatedly unlocking the car with the key.

It was good for about 2 or 3 months, then it happened again, I tried the thing and again was fixed.

Now its happened again and nothing seems to do any good.

Hi Robert,

Symptoms indicates a power supply interruption and it could possibly be the ignition switch.

Perform a test on the ignition switch to see if it is faulty.

IGNITION SWITCH
Turn ignition off. Disconnect Black 48-pin connector C202, located at base of steering column. Using DVOM, check for continuity between specified terminals with ignition switch in specified
position. See IGNITION SWITCH CONTINUITY TEST . See Fig. 3 . If continuity does not exist as indicated, repair as necessary.


© 2008 Mitchell Repair Information Co., LLC.

I am not able to add any diagrams and will send the file to your email but can't seem to find it.

Electrical problem
1996 Cadillac Deville V8 Wheel Drive Type unknown Automatic 127500 miles
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can you tell me how to program my remotes to work for my car. i have 2 of them and both are marked no#1 on the back but nither work, i did replace batterys in them but no luck.

[quote:1bbbe6a4fa="locksmith335"]Electrical problem
1996 Cadillac Deville V8 Wheel Drive Type unknown Automatic 127500 miles
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can you tell me how to program my remotes to work for my car. i have 2 of them and both are marked no#1 on the back but nither work, i did replace batterys in them but no luck.[/quote:1bbbe6a4fa]

you have to go to the dealer for this, 2 number 1 remotes wont work, has to have a 1 and 2 remote

Electrical problem
1996 Cadillac Deville V8 Front Wheel Drive Automatic

My vehicle has " anti-theft car may not restart PRNDL" flashing on the instument panel. It starts everytime but this message prohibits a lot of the PCM functions. What could be the source of this?

I would first check all DTC's by pressing off and warmer on the climate panel. Record and report all DTC's shown. Another check would be the resistance value of the ignition cylinder with the key installed. This would be done at the electrical connector at the base of the column, the two white wires that come out of an orange conduit are the ignition cylinder VATS wires. Check with an ohmmeter, while rotating the cylinder in all positions. It should display the same value as the key pellet, in all positions. Never should it read open circuit, if so you have a break.

my car will start but will only run for about 3 sec. before it shuts off. then it says anti theft problem

[quote:ffcc0cda79="mrcoltsman"]Computer problem
1996 Cadillac Deville V8 Two Wheel Drive Automatic 200000 miles
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my car will start but will only run for about 3 sec. before it shuts off. then it says anti theft problem[/quote:ffcc0cda79]

the Ignition switch is bad, you can replace the switch , but then it will have to be towed to caddy to do a theft relearn

how to bypassVATS anti theft system

You can't bypass the entire system. It has to remain operational, however you can bypass the most common failure item.


The most common failure in these is the sensor in the ignition lock that reads the key pellet. That would mean replacing the ignition lock with a sensor included.



That sensor can be bypassed. You would need a digital ohmeter to measure the resistance of the pellet in the key. Now go to Radio Shack and buy a resister of the exact same value as the key pellet. Go to the base of the steering column and locate the two thin white wires that go up to the sensor. Cut the two wires and solder the resister between the two ends coming from the harness. This will permanently bypass the sensor but not the rest of the system.

My car will not start...a display message appeared on the dash and it said...."STARTING DISABLED DUE TO THEFT SYSTEM REMOVE IGNITION KEY"...I read the manual and it told me to use a spare key but I didn't have one so i went to a locksmith and got a duplicate key...When I returned to the car and tried to use the new key...it still didn't work, but this time t said...."STARTING DISABLED DUE TO THEFT SYSTEM REMOVE IGNITION KEY"....then it said..."THEFT SYSTEM PROBLEM CAR MAY NOT RESTART"...is it possible to disable the theft system until I get it fixed??....if so how???

You can either buy a new lock cylinder, place a good key in it, and plug it in to the harness leaving it under the dash until it can be installed. Or if you know the resistance value of the key pellet, obtain some resistors of the same value and bridge the harness side of the connector simulating a good key. Then any key with the correct cut would start it.

The alarm system on my 96 Cad Deville keeps going off. I do not have a remoteless key entry to turn it off with. I would like to either disconnect the alarm or disconnect the horn. How do I do it.?

1995 Cadillac Deville

how to i reset the security system? I am asking for my boyfriend who thinks he knows everything, lol please help me!

it was messed up after the mechanic who put in the new steering column

Has it not started since the used column was installed. There is no reset. More than likely, what is happening is the key that the column came with has a different resistance value than the original key. Since the module was not changed to match the key, it wont start. Check the resistance of the key from the old column, and the resistance of the key from the replacement column and see if they differ. If you can find out the vats code of the original key, you can have a key with that code, cut to match the replacement columns key pattern.

I forgot to mention we already got the new key that is suppose to work but it just wont crank. The security light is on and wont crank , we tried the 20 minute thing to try and reset it, all it did was make the dinging to the door go faster, please help!

No once the new used column was put in it never started again. First the mechanic told my boyfriend to go and get that new key. and now they are claiming it didnt run before but it did, the new used steering column was put in now its just freakin messed up and wont crank

I just purchased a new keyless remote and my car has the gm goodwrench keyless entry system installed, how do i program this system?

KEYLESS ENTRY PROGRAMMING Perform the following when replacing Keyless Entry Module or either Transmitter: Turn ignition switch OFF. 1. Jumper ALDL terminal G (PPL/WHT) to terminal A (BLK/WHT). Door locks will lock and unlock and trunk release will activate in approximately 2 seconds. See Fig. 29 . 2. Press any button on one transmitter. Door locks will lock and unlock and trunk release will activate in approximately 2 seconds. The first transmitter is now programmed. 3. Repeat previous step with the other transmitter. If only one transmitter is being used, go to next step. 4. Disconnect jumper from program connector. 5. Fig. 29: Identifying ALDL Connector Terminals Courtesy of GENERAL MOTORS CORP. Page 1 of 1 KEYLESS ENTRY SYSTEMS -1993 Cadillac DeVille 5/30/2009

Thanks for the suggestion but my aldl connector does not have that keyless entry slot in it. Therefore the person who previously owned the car put in the aftermarket gm goodwrench keyless entry system that i have pictured. I need to knoe how can i manually program this box?

how do i disconnect alarm system?

Did you find that it is causing your no start. If you can determine your key value, you can jumper the harness side of the ignition cylinder connector with resistors of the same value.

1993 Cadillac Deville

how to program keyless entry system

Is it a factory installed type, or goodwrench dealer installed keyless?

I am not the originator of the question but i do have the gm goodwrench factory installed keyless entry system, do you know how to program that box for a keyless remote?

I am not certain on the dealer installed goodwrench one. It has been some time since I have seen one. Have you tried to google it, or other more broad internet option?

yeah i tried to google it but i didnt find much. thanks for the suggestion though.

I have a aftermarket keyless entry system on a 92 cad.I bought a new transmitter,but I lost the instruction on how to program it also on the 97 cad.with factory keyless entry,with the same problem as the 92 cad can you tell me how to program both transmitters

I'll see if I can come up with information. Problem is, it is not supported in factory information. I work at a dealership with a lot of depth, and may find someone in the know.

Try this:

PROGRAMMING
KEYLESS ENTRY PROGRAMMING
Perform the following when replacing Keyless Entry Module or either Transmitter:
Turn ignition switch OFF.
Jumper ALDL terminal G (PPL/WHT) to terminal A (BLK/WHT). Door locks will lock and unlock and trunk release will activate in approximately 2 seconds. See Fig. 29 .
Press any button on one transmitter. Door locks will lock and unlock and trunk release will activate in approximately 2 seconds. The first transmitter is now programmed.
Repeat previous step with the other transmitter. If only one transmitter is being used, go to next step.
Disconnect jumper from program connector.

Thank you if you could get any information it would be grateful.

When ever I lock my car with the master auto lock swith, it arms my alarm well after about an hour or more the alarm starts going off For no reason at all. It goes off at like 3AM 4AM 5AM, it is very annoying having to go outside and unlock it...

I know I can lock them all manually but it is really annoying.

I tried removing the car battery and it still screws up.

How can I fix it?

[quote:0d1d501ec4="korndog2003"]Electrical problem
1991 Cadillac Deville V8 Front Wheel Drive Automatic 131000 miles
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When ever I lock my car with the master auto lock swith, it arms my alarm well after about an hour or more the alarm starts going off For no reason at all. It goes off at like 3AM 4AM 5AM, it is very annoying having to go outside and unlock it...

I know I can lock them all manually but it is really annoying.

I tried removing the car battery and it still screws up.

How can I fix it?[/quote:0d1d501ec4]

maybe a new drivers door latch, the alarm is seeing a door opening

how do i bypass my security system on my 1991 cadillac deville?

http://www.youtube.com/watch?v=13IMIYGj1dM&feature=fvw