Chevy and GMC Duramax Diesel Forum banner

1 - 4 of 4 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter #1
Have a new 2019 GMC with 1600 miles with the engine light on. The code is P01D1 which is for Cylinder #4 Injection Timing Performance -- Over Retarded.

Anyone experience this before. I found this article which suggest they do not really know what causes it and to reset the code and see if it happens again. https://gm-techlink.com/?p=10238
 

·
Registered
Joined
·
3 Posts
Discussion Starter #2
In case someone else experienced this. First trip in a software update was done, code cleared but came back within 60 miles. Second time in the injector in cylinder four was replaced.
 
1 - 4 of 4 Posts
Top