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you cant disable it, its a pass key system not a vats system (vats reads a resistance value in the key). The ignition cylinder has a sensor in it that measures a rotating resistance (then translates into a voltage reading) that the bcm reads to let the car know to start. Usually you can try and start the car, then the security light will start flashing - leave the key in the on position for ten minutes until the security light goes out. Then turn the key off, wait, then try and restart - they usually relearn the code after the first 10 minute try. Sometimes it takes three 10 minute cycles.
The only way to do it, beside bypassing it. Is to have the car running. find the data wire from the BCM to the ECM and cut it. This puts the ECM into default mode, it also set the security light. The car will start and run though. The draw back is. That if the battery goes dead or you disconnect power from the ECM. the ECM will reset and the car won't run. This can only be done on passkey and passkey1. I haven't tried it on passkey2. It will not work on passkey3.
As indicated above, it's not a recommended solution since it eliminates the security feature all together. There is a procedure in your Owner's Manual how to reset the security module by allowing the car to sit idle for ten (10) minutes with the ignition key turned to the RUN position. The security image in the dash will simply go out after the 10 minutes, and you should be able to start your car. Only problem here is that the security lock may come back on again in several days to two weeks (and you will need to repeat the process again, and again.). There is also a YouTube video which shows a person altering the wiring harness that controls the security module by cutting a wire, stripping the insulation off a second wire and connecting the two (2) wires by inserting a resistor (certain size specified in the video that can be obtained from Radio Shack). You will need to use a small soldering iron and it takes about 15-20 minutes once you remove the radio to access the three (3) wire harness. Looks simple if you know what your doing, and is suppose to bypass the security feature permanently. Costs less than $5 for the needed parts (resistor, solder, electrical tape, etc.).
Passlock is a passive theft-deterrent system. The system is armed once the key is removed from the ignition. Passlock enables fuel if the ignition lock cylinder is turned with a valid key. If a correct key is not used, fuel is disabled. You may also want to check the fuse or circuit breaker, and see your Oldsmobile retailer for serviceif you get it started. You can disable the security! if you like. take off the cover to the steering column. look on the passengers side of the column and you will see 3 small 20 gauge wires, yellow, white, and black. cut the yellow wire. problem solved! security is now disabled. your security light on the dash will stay on all the time now when running but isnt that better than paying hunderds of dollars for maybe nothing? I know this works cause i had to do it on my 97 achieva. Good luck
When the vehicles security light is flashing and the car won't start..put the key in the ON position and wait until the security light stops flashing and then turn OFF and then start. this is from a security glitch and it shuts down the gas so car won't start. Good luck!!
There isnt a fuse for the theft system. You need to take the coloum cover off. Should be 3 screws and you will see all the wires in there. The ones you need are three togather. White Black and Yellow. Get the car started and cut the yellow wire. The theft light will come on and stay on but will bypass the theft system. If it is a 2 wire system you will see two little metal strips on the upper side of the key. You have to use a ohm meter and measure the resistance of the strip in there. Its a resistor used to tell the theft computer the key is in there. Anyway find out what the resistance is and buy a resistor from radio shack and look under the steering wheel for the 2 very small guage wires in a yellow cover....NOTE not the air bag wires. Simply cut those wires ( the 2 white ones) and on the set going away from the steering wheel strip the wires and put the resistor one one wire and the other end of it to the other wire....That will disable that system. If its the 2 wire and you have issues getting it simply take the car to a car audio place that does remote starts and for a nominal fee they will do it for you. My records show that it has the 3 wire system.