4.8 LITER. A module in a vehicle used to monitor and control many components of the vehicle's engine management system. From Chassis/VIN 61779. From Chassis/VIN 90878. To Chassis/VIN 61778. To Chassis/VIN 90877. ECC. Engine Control Computer. Engine Control Module (ECM). Engine Control Unit (ECU). General Purpose Embedded Control Unit. Powertrain Control Module.