Snowy
Well-known member
Just got a call back from the dealer, the truck just needed new PCM/TCM calibrations and it resolved both my no boost issue and occasional harsh 6-5 downshift with no hard parts changed. $450 well spent with the dealer as it turns out.
Way better news than one of my Cummins ISL9 trucks needing new injectors to the tune of $9650 from Cummins for just the injectors themselves.
Way better news than one of my Cummins ISL9 trucks needing new injectors to the tune of $9650 from Cummins for just the injectors themselves.


It’s on the “fix it later” list.