Recently purchased a 2001 trooper. Has 180k on it. Drove it for a day and the transmission seemed fine. Now all i have got for gears is reverse and L. D2, d3, do nothing and D works til it shifts out of 1st gear. Then they all just hi rev and rig goes nowhere. I can manually shift it into L and limp it home. Any advice on whats going on with it? Range sensor? Solenoids? Bands?

 

Could be a solenoid or the range switch.
Check to see if any CEL codes have been set.
Bad solenoid will set a code, but I don't think the range switch will.
A flakey range switch may make the gear lights on the dash flash erratically.
Also make sure the battery is good. A slightly weak battery will seriously effect the trans ECM.

 

It's the shift solenoid 1-2 3-4 mine did this but shifting from 3rd to 4th I changed both shift solenoids works just fine

 

Transmission issues sounds ti me kike it just needs the tranny fikter and fluid changed and the oroper amount of fluid put back into it