Found an interesting fix for the tranmission torque converter engage/dis-engage issue that seems to be very common. Many fixes evolve around grounding and EMI (Electro Magnetic Interference) - cleaning ground connections and adding aluminum foil around wire harness at alternator.

I found this interesting information while digging for solutions! I thought I would pass this along.

Suncoast makes excellent high performance torque converters for Diesel trucks. See the attached symptom/solution link (APPS Rewire Ground Instructions)

http://www.suncoastconverters.com/dodge/drewirekit.html