Possible causes:
- FICP sensor is damaged or malfunctioning
- Wiring to the FICP sensor is damaged or loose
- FICM is damaged or malfunctioning
P1244 - Fuel Injector Control Pressure (FICP) Sensor Circuit Intermittent/Erratic
Possible causes:
- FICP sensor is damaged or malfunctioning
- Wiring to the FICP sensor is damaged or loose
- FICM is damaged or malfunctioning
Here are some additional resources that may be helpful:
- [Duramax Diesel Forum](https://www.duramaxforum.com)
- [GM-Trucks.com](https://www.gm-trucks.com)
- [TheDieselPage.com](https://www.thedieselpage.com)