- 302
- 389
- 63
- Location
- Geographical Center of Virginia
Hello all,
I have a M1025A2 HMMWV that has had an issue with the transmission light since I received it. The problem is that the transmission light is illuminated after the vehicle is turned off. This leaves the TCM on and eventually kills the batteries. Once the vehicle is turned on, the transmission light goes out, and the transmission shifts as designed.
What can cause this? I was told in the past that it was an issue with my glow plug box, but I have replaced it with another glow plug box that I know works and I still have the issue. The glow plugs cycle properly as designed. Someone sent me a link to a US Army 4L80e troubleshooting TM but I can not find it any more.
I have a M1025A2 HMMWV that has had an issue with the transmission light since I received it. The problem is that the transmission light is illuminated after the vehicle is turned off. This leaves the TCM on and eventually kills the batteries. Once the vehicle is turned on, the transmission light goes out, and the transmission shifts as designed.
What can cause this? I was told in the past that it was an issue with my glow plug box, but I have replaced it with another glow plug box that I know works and I still have the issue. The glow plugs cycle properly as designed. Someone sent me a link to a US Army 4L80e troubleshooting TM but I can not find it any more.