Oldsmobile 12398552 Front Side Door Lock Cylinder

To remove the lock cylinder, first take off the trim panel and the water deflector, then raise the window and use a screwdriver to slide the lock cylinder retaining clip out of engagement, with installation being the reverse of this process. For the lock assembly, raise the window and remove the trim panel and water deflector. Access the large hole to disengage the remote control to lock connecting rod using a spring clip; on Coupe models, it may be necessary to disengage the inside locking rod from the lock by sliding the plastic retaining sleeves towards each other. Next, remove the three screws securing the lock to the door lock pillar and take the assembly out of the door, noting that on four-door models, the inside locking rod must be removed from the lock after the lock assembly is taken out. Installation follows the reverse order of removal.