Ignition Lock Cylinder Updated Coding Procedure (99-T-01)

IGNITION LOCK CYLINDER UPDATED CODING PROCEDURE

TECHNICAL SERVICE BULLETIN

SERVICE INFORMATION FOR NEW 1991-1997 FIRST DESIGN KEY (SQUARE HEAD) IGNITION LOCK CYLINDERS

Model(s): 1991-96 Saturn Models

1997 Saturn Interim Models

Group/Seq. No.: Body - 01

Corporation No.: 99-08-52-001

Bulletin No.: 99-T-01

Date: January, 1999

VEHICLES AFFECTED

1991-1996 and 1997 interim Saturns with first design key (square head)

PURPOSE

Due to a design change in the service replacement parts for 1991-1996 and 1997 first design key (square head) ignition lock cylinders, the ignition lock cylinder packages, ignition lock cylinder component parts, and the 1991-1999 Saturn Key Code Manual need to be updated.

All 1991-1997 first design key (square head) service replacement ignition lock cylinders will now have a sidebar and SLX tumblers. The sidebar is not serviced separately. The tumblers, tumbler springs, bezel, ignition pin, and ignition pin spring are all unique to the new design and are used only for service replacement of 1991-1997 first design key (square head) ignition lock cylinders-not for 1998-1999 Saturns.

In addition, the 1991-1999 Saturn Key Code Manual must be updated to reflect the change to a 6-tumbler ignition lock cylinder design. Please make the following column heading changes in the "1991-1997 Saturn Key Code List" section of the 1991 - 1999 Saturn Key Code Manual:

Old heading: CODE 95-97 INT IGN 91-94 IGN DOOR R/CMPT

New heading: CODE MASTER KEY 91-97 INT IGN DOOR R/CMPT

Also, cut two new keys (P/N 21097940) for all customers using the "MASTER KEY" code. Some customers with 1991-1994 vehicles may have the shorter version of the first design key (P/N 21097305) which will rub on the bezel of the 1991-1994 second design ignition lock cylinder. (Reference Technical Bulletin 94-T-50 for key length change) After cutting new keys, scrape off any burrs and perform a functional check of all vehicle lock cylinders with new keys.

The following pages provide the ignition lock cylinder coding procedure. Copies of this bulletin should be made and inserted in the "General Information" section of all 98-99 Body Repair Service Manuals before the "Ignition Lock Cylinder Coding-All" procedure.

PROCEDURES

1. Remove shroud fasteners (5.5 mm hex head) and remove steering column upper shroud panel. See Fig 1 .
2. Insert key into ignition lock cylinder and rotate to ACC position.
3. Depress the square locking button on the top of ignition module assembly and slide lock cylinder assembly from ignition module housing. See Fig 2 .
4. Remove lock cylinder bezel by carefully prying from lock cylinder with thin bladed screwdriver.
5. Insert key into ignition lock cylinder assembly and depress ignition locking pin using a thin bladed screwdriver.
6. Rotate cylinder and remove ignition locking pin. See Fig 3 .
7. Remove cylinder from case.
8. Push tumblers out of lock cylinder using a thin bladed screwdriver. See Fig 4 .
   NOTE: Ignition lock cylinder reads key cut positions 1 through 6.
9. Select the correct tumblers for the desired code by the number stamped on the tumbler. See Fig 5 .
   NOTE: Make sure the tumbler springs are in place before installing tumblers.