Forum Discussion

ceaser_22000's avatar
ceaser_22000
Explorer
Apr 01, 2016

2005 6.6 duramax check engine

I have a 2005 GMC Duramax 6.6 while recently coming home through Virginia and West Virginia on North 77 my check engine light came on after about 3 or 4 good mountain passes. Stop for the evening the next morning the engine light came off pulling through the Flatlands no check engine light I don't have a obd reader any ideas I was pulling a 40 foot fifth wheel approximately 13000 pounds.