C 1500 Truck 2WD V6-4.3L VIN W (2001)
Ignition Control Module: Description and Operation
There is only one mode of operation in this ignition system. The PCM sends timing signals to the IC module. The IC module will then amplify and send
a signal to the ignition coil which will produce high voltage secondary energy. This high tension voltage will then be distributed through the coil high
tension wire, distributor rotor, cap, and plug wires. Since the distributor has no influence on the base timing, adjusting the distributor will not change it.
However, the distributor on V8 applications can be adjusted to eliminate the chance of crossfire at the distributor wire terminals. Distributor terminal
crossfire may cause poor performance. The V6 engine applications do not use an adjustable distributor.