Computer Command Control: Description
The Computer Command Control (CCC) system is used on all California Chevrolet S10 and GMC S15 trucks equipped with the 2.8L V6 engine.
CCC is an electronically-controlled exhaust emission system that monitors several engine/vehicle functions and controls various operations, including the transmission torque converter clutch. The CCC system aids in the control of exhaust emissions while maintaining good fuel economy and driveability.
The Electronic Control Module (ECM) is the "brain" of the CCC system. The ECM controls engine systems to maintain good vehicle performance under all normal driving conditions.
The CCC system is primarily an emission control system. The primary objective of the system is to maintain an air/fuel ratio of 14.7:1. With this ratio maintained, catalytic converter can effectively control nitrogen oxides (NOx), hydrocarbons (HC) and carbon monoxide (CO).
Not all terminals are used in all applications.