bone stock 06 lbz duramax
- Thread starter Dennon2009
- Start date
Okay. So I left Yuma az. Towards flagstaff az and hit i40 to Kansas today and started out pullin getting around 12 mpg and as I started going through the hills. My engine light came on and I'm only getting 7.5 mpg now.. What could it be, I'm pulling a 32' fifth wheel camper.
When's the last time you changed out your fuel filter ? Are you limits to any type of rpm limits. If you can try to stop some were and get the dtc code for use. This is why I said if we just flash your ECM and tcm once your back here go with a cts insight then you will be able to read the dtc code your self and clear them.