Can someone please help? My wifes 96 GA`s Anti- thief keeps comong on and it kills the motor.It happens all the time and many times she has had the car towed home and when she gets it home it will start.I called Pont.Garage and they said it can`t be turned off.Is there a way to turn it off? Or would anyone know why it keeps coming on ? Any help would be great.

Tom

Does yours have the little chip on the key? I can't remember if all of the 96's went to not using the chip, but you can try this if your wife have a lot of stuff on her key ring have her take it off and just use the key alone We are hearing a lot of this on the forum lately. and the weight of stuff on the key rings is causing the key to move in the ignition. Try that to see if it works, I am sure some of the other members may have some other ideas for you as well.

Good luck,

Thanks Hoags.I looked at my wife keys and she has alot of stuff on it.She will try using just the one key and see if that helps.

Tom

I called Pont.Garage and they said it can`t be turned off.Is there a way to turn it off?
Tom

96 GA has Passlock 1. Yes it can be turned off. You don't have to add a remote starter.

PASSLOCK I or II DISABLEMENT

The following is a procedure to disable Passlock I or II Systems for vehicles in which remote start/stop system installations are required. This procedure is required because a remote start system will not function with the current Theft Deterrent System (Passlock) which is included on many 1996 and up GM vehicles.

Please note that this modification is intended to be used only in conjunction with the installation of a remote start/stop system and does not provide a procedure to install a remote start/stop system.

CAUSE
If an attempt is made to start a vehicle by a means other than a key rotation in the ignition switch, the Body Control Module (BCM) will interpret this start as a vehicle theft and disable the fuel injectors.

CORRECTION
A minor wiring modification may be made to allow the vehicle to be started remotely. This modification includes adding a switch to allow the customer to select “ON” to disable Passlock or “OFF” for normal Passlock operation.

CAUTION: When this modification is performed and the switch is set to the ON position, the theft deterrent feature will be disabled. When the theft
deterrent is disabled the SECURITY or THEFT telltale will light up indicating that the theft deterrent system is NOT functioning.

PASSLOCK MODIFICATION
Refer to appropriate GM service manuals and/or SVMQP Electrical Guideline Manual for instruction on splicing and electrical connections.
1. Select a suitable on-off switch (see note below) which will be used to disable/
enable the Passlock System. Mount the switch in a location such that it is
accessible to the driver and will not interfere with normal vehicle operation.
NOTE: This is an extremely low current circuit (approx. 7mA), it is therefore very important that a high quality, low energy, fast acting switch be utilized
for this application.
2. Turn the ignition switch to the OFF position.
3. Locate the Main Ignition Switch Harness. GM's Passlock System wires exit the Ignition Switch Tumbler together and then join with the Main Ignition Switch Harness. (See http://www.bulldogsecurity.com/ or http://64.85.6.118/diagrams/diagrams.asp and select your Make, Model and Year for wire colors and clues on the quickest way to access these wires.)
4. Locate the Yellow Passlock Data Wire which is included in a bundle of three tiny (20 GA) wires wrapped in friction tape.
Cut this wire and splice a 0.5mm2 (20 GA) yellow wire to each end of the cut wire.
Keep wire length to a minimum. Route modification wires clear of moving parts.
Connect the yellow wires to the switch such that the contacts are OPEN when the switch is in the ON position.
5. Turn modification switch to the OFF postion (contacts closed).
6. Start vehicle to verify normal operation. If engine “cranks but will not start"
recheck the switch position (contacts should be closed), wire connectors and
modification wiring.

SWITCH OPERATION

To enable remote start:
Start the engine with the ignition key (modification switch must be in the OFF
position). Turn modification switch to the ON position (contacts open). The
SECURITY or THEFT telltale will light up indicating that the Passlock System is inoperative.Once the SECURITY or THEFT telltale has been on for at least 5 seconds the vehicle can be turned off and then remotely started.

To disable remote start:
The Passlock System can be reactivated by turning the modification switch OFF
(contacts closed). Vehicle can either be running or off when this is done.

Please note that the VCM/PCM will record Diagnostic Trouble Codes (DTCs) related to the security system when the modification switch is in the ON position (circuit open). This is due to the way that the VCM/PCM interprets this condition.

NOTICE
Any condition which removes battery power from the Vehicle Control Module/Powertrain Control Module (VCM/PCM) (e.g. dead battery, disconnected harness connectors, etc.) will prevent the vehicle from being restarted. If the engine exhibits a “cranks but will not start” symptom, place the modification switch in the OFF (contacts closed) position. This will reactivate the Passlock System and allow the vehicle to be started with the ignition key.

Ray:smokin:

Replacing the hall sensor on the side of the ignition tumbler. Has fixed 6 out of 6 for me without modding the wiring.

Well we tryed to find someone that knew what they were doing to fix this and could not,So the wife put the GA in the Pont.Garage,Holy $hit $519.00 and they said it was working right now.I told the wife if her car breaks down again she will be riding a bike. I told her to buy a Ford !.
Thanks all.

Tom

Holy Crap... What did they have to do to it?

$519 is exessive. The part needed is only about $100. They must have replaced the whole thing along with harnesses and computer.