Computer Command Control: Description

NOTE: This article will refer to various models by body style. "T" bodies - Chevette and T1000; "X" bodies - Citation, Omega, Phoenix and Skylark; "A" bodies - Century, Celebrity, Ciera and 6000; "F" bodies - Camaro and Firebird; "J" bodies - Cavalier, Cimarron, Firenza, J2000 and Skyhawk.

The Computer Command Control (CCC) system is an electronically controlled system that monitors up to 15 engine/vehicle functions to control engine operation and lower exhaust emissions while maintaining good fuel economy and driveability. The Electronic Control Module (ECM) is the "brain" of the CCC system. The ECM can control as many as 9 engine-related systems to constantly adjust engine operation to maintain good vehicle performance under all normal driving conditions.

The CCC system is primarily an emission control system. Primary objective of CCC system is to maintain an ideal air/fuel ratio of 14.7:1 under all operating conditions. When an ideal ratio is maintained, the catalytic converter can effectively control nitrogen oxides (NOx), hydrocarbons (HC) and carbon monoxide (CO).