I'm going to try the shutter lube, but what I would love to do is disable the TC lockup feature altogether. In the morning when the truck is cold the lock up feature is disabled until the tranny reaches temperature which is about 4 miles. At 55 mph the engine is at about 1800 RPM. At this RPM the engine has no trouble going up hill. Then when it reaches temperature it locks the converter and drops the RPM to 1500. Then the slightest ant hill drops it down in drive. They were not smart enough to program it to unlock the converter first and then secondly down shift like Chevy does. But from what I understand if you unplug the solenoid that locks the tc the computer goes nuts and boosts the line pressure making it shift hard. Is there anyway to trick it into thinking it's always cold? RB