Hello friends,
Had kind of a unfortunate day with the 2006 Duramax today (8000 miles) . Wondering what you guys think might of happened, that caused my problems. This is how the day went:
Started Dmax this morning, ran fine. Went to local fuel station (where I have always purchased fuel) and filled up w/ diesel. It was about 1/2 tank low. Drove approx 30 miles and "engine light" illuminated on dash and truck went into limp mode. Max RPM allowed was 2000 RPM. Called OnStar and they couldnt diagnose error code. They recommended to shut truck off for 5 minutes and see what happens. Did that, and truck went out of limp mode (ran fine), but engine light still illuminated. I also notice excess black smoke pouring out of exhaust even during slight accleration on interstate, but power and accerlation were fine. Got to town and truck idled very rough. I could feel the motor missing/shaking with a obvious miss while idling (very violent). When truck would come off idle during accleration, I could hear the injectors ticking. Sounded really bad. Shut truck off for approx 6 hours. Started truck back up, ran fine and sounded fine. No "check engine light" illuminated. Got back on interstate to head home and all was going well. Got the exit ramp and slowed down for stop sign. Truck began shaking again during idle and was very rough. Truck then died and that was it. Will not fire at all. Check fuel filter (which has about 2000 miles on it) and it was full and primed. So, I had to have the truck towed 45 miles to the closest dealer. Any ideas?? Thanks in advance for any input!!!