2001 duramax p0089 & p0093
2001 chevrolet duramax
Bone stock truck
codes p0089 & p0093
i have a 2001 duramax that keeps throwing these two codes. I can make it throw the codes on the same uphill climb i make to work everyday. If i try and hammer it up the hill it will fall into limp mode. After falling into limp mode the truck will not want to go over 65mph, and is very sluggish. The codes will clear themselves with a couple start cycles of the truck and it will run fine for a while or until i put it under load going up hill. Any input would be great.
Last edited by shortbus1987; 03-22-2015 at 07:07 PM.