Here's what drives cars of the '80sâ the Electronic Computer Module(ECM).Typical GM unit has an analog board to run sensors, digital board for"thinking" and memory. Removable PROM(at left)calibrates ...
(iSeeCars) – There are a lot of mechanical and electrical parts that work together to help your car run smoothly. The electronic control module (ECM) or powertrain control module (PCM) is the main ...