Transmission.
Very roomy and comfortable to drive. However the electric transmission, will worry you all the time.
Very undependable. i see why GM is going bankrupt. Serves them right as owning a Montana drove me to Bankruptcy.
I agee with you about the MONTANA. Mine is an electrical nightmare. Never again!!!
I agree re: electronic issues, I was debating whether to trade or spend $2000 on a new tranny, but my mind is made up now!!
Also, does anyone else have a "ghost" that locks & unlocks the doors at random??? We have read the codes in the manual over & over trying to change the lock sequence, but no matter what setting, the "ghost" still locks & unlocks it at will.!!!