How do you turn off the anti theft system on a 2004 Chevy Cavalier?

Answer 1

i have a 2000 cavalier with the same anti theft problem. i am not sure if the 2000 has the same anti theft system as the 2004. but here is how i bypassed my system. first remove the steering column cover to gain access to the key cylinder. then disconect the three prong wire that runs from the key cylinder to the wiring harness. then disconect the single black ground wire that runs from the key cylinder to the steering column(on some cavaliers this ground wire may not run to the steering coulmn)next run this ground wire from the key cylinder to the ground wire on the ignition switch.the ignition switch is the rectangular type box that attaches to the back of the key cylinder. (check your manual if you are not sure of this, also the ground wire on the ignition switch is the smallest black wire on this switch, use a volt meter to make sure you are connecting to ground.) turn the key to run position and check for voltage where the three prong wire plugs into the harness. i had 5+ volts on one wire and 12+ vots on the other, the third wire was neutral.( at that time the system was in anti theft mode. ) next start the car the system should be now disabled. the theft system light will remain lit on the dash because it's no longer sending a signal to the computer. you can remove the instrument cluster and pull this light bulb,leave it the way it is or cover it. I've not had a single starting problem since i did this on my car.

i suspect there is a way to bypass this system also by using a resistor. would like to know if anyone has tried this. good luck