Just had reprogramming delete done to D13 for (off road)per say .Since done truck has good power and mpg.Problem is truck does not want to shift and engage into gears at stop or rolling.Also idling erratic.Also shivers hard when using engine brake. Showing faults of PTO and Parking brake.I was told by one programer that ecm,bcm&abs modules all need to be re-programmed.My tuner only did ecm.And now I'm experiencing these issues.Also seems to be making louder engine noise at overhead.Is over head adjustment required when doing this?
Any one with any knowledge of this or what needs corrected? Pablo......Anyone??