[Jaguarjon]

posted in wrong place first time, i had the trans rebuilt in my 2007 3500 6.7 with 68RFE now i can hear engine reving up before shifts and fuel mileage is bad ,want go into 6 until 60, could he have put in a gas burner 68RFE

 

[CritSkeert]

posted in wrong place first time, i had the trans rebuilt in my 2007 3500 6.7 with 68RFE now i can hear engine reving up before shifts and fuel mileage is bad ,want go into 6 until 60, could he have put in a gas burner 68RFE

sounds like you got trans tuning on your truck. my truck doesnt shift until 60 to 6th gear with trans tuning

 

[Jaguarjon]

sounds like you got trans tuning on your truck. my truck doesnt shift until 60 to 6th gear with trans tuning

no haven't did anything to it for 280 k but pulled a boat in overdrive , that's what killed it