2010 GMC Sierra 3500 HD Ignition Lock Cylinder

You should remove the steering column shroud, install an Allen wrench into the hole on top of the ignition lock cylinder case and then slide the ignition lock cylinder out of the ignition lock cylinder case.

You should install the ignition lock cylinder case, the 3 ignition lock cylinder case screws, the park lock cable into the lock cylinder housing, the ignition/start switch, and the inflatable restraint steering wheel module coil.

You should remove the inflatable restraint steering wheel module coil, the ignition/start switch, the 3 ignition lock cylinder case screws and the ignition lock cylinder case.

You should install the key into the ignition lock cylinder, install the key into the ignition lock cylinder and then enable the supplemental inflatable restraint (SIR) system.