To remove a GM ignition lock cylinder, use basic hand-tools to loosen the center console trim, unplug the radio and access the unit. The lock cylinder needs to be removed in order to access the electronic ignition switch, which is located behind the unit.
The mechanical GM lock cylinders rarely fail on these vehicles, but the electrical ignition switches located behind the units tend to malfunction. The lock cylinder needs to be removed in order to gain access to the chip-set. The following instructions explain how to remove the lock cylinder from a GM vehicle.
- Unplug the battery Unplugging the battery is an extra safety measure taken to avoid any possible shocks when disconnecting electrical accessories from the vehicle.
- Remove the center console trim and unplug the radio The trim is held in place by mounting screws and clips located around the radio. Once the trim is off, unbolt the radio. Then slide the radio out from the bracket and unplug it from the cabin harness. Doing so will allow enough room to gain access to the lock cylinder.
- Release and remove the lock cylinder Press down on the tabs holding the lock cylinder in place and release them. With the lock cylinder now free, safely slide it out.