Had the trans rebuilt @ 110K miles. HD TC and shift kit installed. First day back on the road it went into "second gear start" mode. Back to shop where they put a resistor on/in somewhere. Solved the problem.
After a couple of weeks it suddenly developed a new issue. This was noted at startup one morning. It now shifts way too early especially on the 2-3 shift. At light throttle settings, especially if you lift a little(like easing away from a light in traffic) the 1-2 and 2-3 shifts are virtually one event, BA-Boom! Third gear! It is also very reluctant to kick down into 2nd.
The TC lockup and 3-4 upshift and 4-3 kickdown are normal.
I've had it back to the shop again and they "tweaked a bracket" and told me to try it. No change except that it seems even more reluctant to kick down to 2nd.
I really feel this is a solenoid/sensor/something failure but this is really out of my field. Help!
2000 2500 w/superchips tuner/K&N.

GrampZ

 

You need to talk to Tim Holt. He is the best tranny guy around.
http://oldmanworking.spaces.live.com/

Or look him up on www.dieselram.com

 

bump any ideas? Solenoid? sensor? Help!

 

Whose HD TC?
General rule of thumb is not to just do an after market, 'tight' TC w/o also doing a valve body. Factory TC should, of course, work well.

My tranny has never willingly downshifted to second. It will go into 1st (from third) if I get below 12 mph. Any downshift below 20 mph, from adding throttle, usually goes to first, than quickly to second.

RJ