Cutting Keys

Fig 1: Identifying Key Cutting Depths

Courtesy of GENERAL MOTORS CORP.

You can obtain the key code from the 4-digit number on the key tag that accompanies the original master and valet keys. The 4-digit key code cross references to the cut and tumbler sequence. The keys have 10 key cut positions (1) and 4 key cut depths (2). Key cut positions are numbered 1-10, counting from the head of the key to the tip. The key cut depths are 1 through 4, cut depth number 1 is the deepest cut. The key transponder (3) in the master and valet key must be programmed to the vehicle. Refer to appropriate service procedure for programing the keys to the vehicle.

1. Cut a blank key to the proper depth and sequence of each of the tumbler positions.
2. Inspect the mechanical operation of the key in the lock cylinders, in the doors, the ignition switch, the rear compartment lid and any storage compartments:

   With each side of the key pointing up inside the lock, inspect the operation of the lock in both directions.

   • Turn the key both directions in each lock cylinder.
   • Turn the key with each side of the key pointing upward in each lock cylinder.
3. If replacing a master or valet key, program the key transponder to the vehicle.