tcc solenoid - shifty problem

[dan lephart]

My T Type with 49,000 miles has a hunting back and forth motion between 50-57 mph. I disconnected the tcc solenoid connector at the transmission and the slight bucking went away. Time for a tcc solenoid? I need part number and any advice available. Replace with stock GM? Thanx in advance.

 

[hounddogs!]

Several threads around regarding the 200 solenoid vs the heavier 700 piece. I replaced mine with one from NAPA that was marked for use in both transmissions. Problem is fixed so far, but this is after few miles and little abuse.