2022 Truck of the Year
- Jan 3, 2019
- Reaction score
- Tonopah, AZ
The ICM can cause drive ability issues too. The Ignition Coil and Ignition Control Module work hand in hand AND one can cause failure to the other. Again, as everyone says, only buy quality electronic parts. Yes they're expensive but, you get what you pay forThe ignition modules are absolutely prone to fail with heat. But my experience has always been that they either work great or not at all. I’ve never had a drivability issue related to an ignition module other than a complete no-run condition.
A GM Original Equipment Coil (GM PN19418995) and ICM (ACDelco D1984A) are still available, you just have to hunt for them I will always change both at the same time!