Maybe they need a copy of the service manual?

8E - 78 ELECTRONIC CONTROL MODULES - SERVICE INFORMATION ZH
PROGRAMMING THE PCM
The Sentry Key Remote Entry System Secret Key is an ID code that is unique to each Sentry Key Remote Entry
Module. This code is programmed and stored in the Sentry Key Remote Entry Module, the PCM, and the ignition
key transponder chip(s). When replacing the PCM, the DRB IIIT will program the secret key into the new PCM.
Note: If three attempts are made to enter secure access mode using an incorrect PIN, secured access mode
will be locked out for one hour. To exit this lockout mode, turn the ignition switch to the ON/RUN position
for one hour, then enter the correct PIN. (Ensure all accessories are turned off. Also monitor the battery
state and connect a battery charger if necessary).
PROGRAMMING THE SENTRY KEY REMOTE ENTRY MODULE
Note: Be sure to enter the correct country code. If the incorrect country code is programmed into the Sentry
Key Remote Entry Module, it cannot be changed and the Sentry Key Remote Entry Module must be
replaced.
1. Program ignition keys to the Sentry Key Remote Entry Module.
Note: If the PCM and the Sentry Key Remote Entry Module are replaced at the same time, all vehicle ignition
keys will need to be replaced and programmed to the new Sentry Key Remote Entry Module.
PROGRAMMING IGNITION KEYS TO THE SENTRY KEY REMOTE ENTRY MODULE
Note: A maximum of eight keys can be learned to each Sentry Key Remote Entry Module. Once a key is
learned to an Sentry Key Remote Entry Module it (the key) cannot be transferred to another vehicle.
1. Obtain ignition keys to be programmed from the customer (8 keys maximum).
2. Using the DRB IIIT, erase all ignition keys.
3. Program all of the ignition keys.
If ignition key programming is unsuccessful, the DRB IIIT will display a failure message.
REMOVAL
REMOVAL
1. Disconnect the negative battery cable (2).
2. Slide the clips forward to remove the plastic control
module box cover (1).