carringb wrote:
Bewared that there is an open TSB for the transmission programming. The torque converter clutch slips at heavy throttle when operated at max GCWR, so the programming leaves the torque converter unlocked more. This saves the clutch, but at the expense of more heat. This was causing overheating issues for the motorhome guys, but Hayden came out with a better fan clutch that kicks on sooner.
That sounds like a bandaid solution to a improper design!
Is there not a way to increase the line pressure? On my old Dodge 47RE, a Trans-go shift kit increased the pressure high enough so that the stock V10 can't slip the converter clutch at any throttle opening.
The 6L90 is a tougher transmission, and the 6.0 is a weaker engine (torque wise), can't see there being any trouble. If they can run a de-tuned Duramax on this unit, how can a stock 6.0 slip the clutch?
