I have a 1999 Ford F350 with 7.3 w/turbo. I'm trying to find the location of the glow plug module control. I have the following code come up when the service light came on. The code number is 1396 Glow Plug Monitor Fault Bank N0.2. Can someone please help me with this. I have replaced the Glow Plug relay.but the code still comes up

 

You did not replace the glow plug relay, you replaced the Intake air heater relay...

The GPCM is mounted right next to the relay you just replaced. Its about 3"x2" and mounted on the passanger valve cover. Two plugs go into it.

Sounds like you have a short somewhere on it or in the valve cover wiring.