What is the ICM Module?
The GM ICM Module is an upgraded version of the HEI Module. This version features a weather pack connector for its connections that would normally be exposed on the HEI.
The ICM has a smaller footprint and can be found sold with a coil pack and heat sink as package that is economically priced.
Why use an ICM Module instead of HEI?
The ICM offers a cleaner installation and decreased risk of incorrectly wiring it. The HEI module has connections that can be used interchangeably and can easily be connected incorrectly.
Wiring Diagrams
