CONTROL GP-COMMUNICATION 4857947 - Caterpillar

The "Truck Manufacturer Parameter" has not been programmed. The parameter must be programmed for the manufacturer of the chassis in order to configure the correct options and ranges for the engine.Note: The "Truck Manufacturer Parameter" must be programmed before the "Customer Parameters" are programmed.System Response: The code is active, but the code is not logged. The check engine lamp will be on when the code is active. The Engine Control Module (ECM) will select the GM parameter as the default until the appropriate parameter is programmed.Possible Performance Effect:The following items will not work correctly:
Speedometer
Tachometer
Engine monitoring lampsTroubleshooting:Determine the type of chassis.Test Step 1. Perform the following diagnostic procedure: "ECM Memory - Test"Results:
OK - STOP