Powertrain Control Module (Pcm)/Vehicle Control Module (VCM)

Vehicles equipped with 6.0L engines utilize a PCM. Vehicles equipped with 4.3L, 5.0L, 5.7L and 7.4L engines utilize a VCM.

The PCM/VCM controls TCC, pressure control solenoid (hydraulic pressure), and shift solenoid valves 1-2 and 2-3. In addition, PCM/VCM controls ignition, fuel and emission devices related to engine.

The PCM/VCM receives electronic signals from sensors and switches. These signals help PCM/VCM determine when to operate various relays and solenoids related to engine and transmission components. On "C" and "K" series equipped with 5.7L and 7.4L engines, VCM is located in engine compartment, near master cylinder. On "C" and "K" series equipped with 6.0L engine, PCM is located at left front of engine compartment. On "G" series, VCM is located in engine compartment on wheelwell. On "P" series, VCM is located on radiator support.