I keep tripping a p0650 error indicator lamp (MIL) control circuit error, and a p0381 glow plug indicator circuit error. Does anyone know what might be causing this?
Hmmm. Every time I clear mine, they come back in a few days. The check engine light goes on and off by itself. When it is off, the tach jumps around, the blinkers don't work, and the a/c compressor doesn't work. Then the check engine light comes on and everthing starts working right. Weird chit.I had the same codes so I cleared them and they haven't come back yet never really found the answer.
Hey did you ever figure out what was causing the problem and how to get it to quit? My buddy is having the same problem with his 03 duramax. The tach is jumping and the P0650 code is showing but no problems with the blinkers and ac compessor. Please get back with me asap.:help:help:helpHave you ever found the solution to those codes. Mine came back the other day and is doing the same crap again.
We just had it fixed under GM recall about 8,000 miles ago. Will GM fix it the second:help:help:help time at no cost?Pretty sure the 381 code was answered for you & the 650 code is most likely your instrument cluster is going bad. Fix for this is putting in the new upgraded stepper motors.
Some say it is a DIY but for some it may be hard, I believe there is a write up here on how to fix this.
Sounds like the same fix for me. Took it to the dealer again and they said there was a loose connection in the fuse box so they tightened it up and hasn't done it since.It wasn't the glow plug, it was the glow plug light in the instrument cluster. I thougth I had updated this. Turns out what the real problem was, was the ECM fuse under the hood was getting a bad connection. My mechanic buddy tightened up the prongs the fuse slides in and I haven't had it do it since.