Duramax Lifetime Supporter
Join Date: Nov 2019
Location: South Georgia
99985 miles when the codes first came up. It has been 3000 miles since I've added any def and it still says ok. Maybe I should top it off to see if it is using any.
Most of the trucks life has been on the highway. But this summer I was hauling logs out of the woods. It idled a bit to keep the ac on while I loaded the trailer. Maybe that is how this issue started. I am just now reading that idling is not a good idea.
2014 silverado crew cab 2500 w/t