This Preliminary Information communication provides information to the technician about vehicles that may have One or more tire pressures display dashes, Service Tire Monitor System Message, Remote Keyless Entry poor range or inoperative or ?No Fob Detected? message or Passive entry system inoperative (if equipped). The technician may find any of the following Diagnostic Trouble Codes set in the Body Control Module associated with the vehicle tire pressure sensors: C0750, C0755, C0760, and/or C0765. Technician will inspect the Remote Control Door Lock Receiver antenna system. Before replacing any parts check three locations for the system being unplugged. The locations were the system could be unplugged are Antenna Amplifier Module disconnected from Antenna at right rear quarter glass, Coax cable disconnected at the Antenna Amplifier Module, and Coax cable disconnected at the Remote Control Door Lock Receiver.