Question about 1996 Pontiac Grand Am
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The ignition lock cylinder case, including the Passlock?"¢ sensor
The ignition switch
The body control module (BCM)
The security indicator on the instrument cluster
The powertrain control module (PCM)
Ignition Lock Cylinder Case, Including the Passlock?"¢ Sensor
The ignition lock cylinder fits inside the ignition lock cylinder case and operates the ignition switch when turned by a key with the proper mechanical cut. When the ignition key is used to turn the ignition lock cylinder to crank, start, a magnet on the lock cylinder passes close to the Passlock?"¢ sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock?"¢ sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle.
If a magnet from outside of the ignition lock cylinder case is used to attempt to steal the vehicle, the tamper hall effect sensor will be activated. This completes a circuit from the security sensor signal circuit through a tamper resistor to the security sensor low reference circuit bypassing the security resistor. If the ignition switch is forced to rotate without the correct key, or if the ignition lock cylinder is removed by force, the Passlock?"¢ sensor will be damaged and will not operate.
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Disconnect the negative battery cable with a socket or box wrench. Pull the airbag fuse from the driver's side fuse panel using the fuse removal tool found on the panel. Disable the theft-lock system on the radio.
Remove the instrument cluster by removing the bezel screws with a screwdriver and prying the bezel off with a prying tool or flathead screwdriver.
Remove the two screws holding the ignition switch in place with a screwdriver.
Push the ignition switch about one inch toward the front of the vehicle so that it will clear the mounting bracket. Lift the switch up and out from behind the instrument panel.
Disconnect the electrical connectors from the ignition switch. Put the key in the ignition and turn it the Run position.
Press the spring-loaded pin on the side of the ignition switch with a small screwdriver. Pull the lock cylinder out by the key.
Place the ignition key in the new ignition cylinder and push the cylinder into place in the ignition housing. Turn the key to the off position and remove it.
Connect the electrical wires to the back of the ignition switch.
Put the switch assembly in position in the cluster and install and tighten the two screws with a screwdriver.
Install the instrument cluster bezel and attach the two screws with a screwdriver.
Replace the airbag fuse in the driver's side fuse panel. Connect the negative battery cable with a wrench. Enter the code for the Theft-lock system into the radio.
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