Door Locks: Description and Operation

The Saturn lock service parts are packaged in a small box and are disassembled. The door lock cylinder, trunk lock cylinder and ignition lock cylinder service units are all available this way. The lock cylinder service units have all the parts necessary to build up a lock cylinder except the tumblers and the tumbler springs. The lock service kit, normally found in the Saturn parts department, has the tumblers and springs necessary to build up the lock cylinder service unit to the customer's original key code. The ignition module is also serviced as a disassembled unit. It consists of the module housing, clamp and two shear bolts.

The lock service kit also contains other components of the door, trunk and ignition lock system such as E-ring retainers, pawls, lock cylinder caps, shutters, and springs, rod retainers, ignition module shear bolts, trunk lock cylinder return springs, trunk lock gaskets and trunk lock service caps. This kit is provided so that the dealership will have the components necessary, at all times, to service the Saturn lock system and maintain its one key integrity for the Saturn customer.