2004 Pacifica "Service Immobiliser" shows on the dashboard

Hello, I don't know the availability of good service in Gambia, but you will need to seek one out. The immobilizer can be programmed out of the powertrain control module if you mail it out to a service that does this, but otherwise your only real options are to truck it to a repair shop or replace every component related to the immobilizer, including the engine control module, body control module, ignition, key, etc...