Circuit/System Description
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
As part of the vehicle telematics enhanced services, a request may be sent to the remote control door lock receiver (RCDLR) to disable vehicle starting. If a valid message is received by the RCDLR requesting that starting be disabled, the start enable message will not be sent to the engine control module (ECM).