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Key Programming - Additional Key With One Programmed Key

SPECIAL TOOL

G03878958
Worldwide Diagnostic System (WDS), Vehicle Communication Module (VCM) with appropriate adapters, or equivalent diagnostic tool
NOTE: This procedure is used when a customer needs to have an additional key programmed into the vehicle without erasing stored key codes, but does not have 2 programmed keys available. This procedure is also useful when attempting to determine if an ignition key is defective, as a new key can be installed without erasing keys or without having 2 programmed keys available.
NOTE: Before programming, the new key must have the correct mechanical cut for the ignition lock.
NOTE: If 8 keys are already programmed, this procedure does not allow any further ignition keys to be programmed without erasing all stored key codes first. The number of keys programmed into the system can be determined using the PID NUMKEYS.
  1. Turn the ignition switch from the OFF position to the RUN position using the new, unprogrammed ignition key.
  2. Enter diagnostic tool and enter the powertrain control module (PCM). Follow Security Access to obtain security access. For additional information, refer to SECURITY ACCESS - PROCEDURE .
  3. From the diagnostic tool menu Select: IGNITION KEY CODE PROGRAM.
  4. Turn the ignition switch to the OFF position and disconnect the diagnostic tool.
  5. Attempt to start the engine with the new ignition key. The vehicle engine should start and run normally.