I have a '96 Trooper, auto trans that is slow to shift when cold. Once it warms up it shifts like a charm. This is my first winter with the Trooper and once the temp dips below 40 or so, it needs to warm up before it shifts smoothly and timely. I'm in MI so it's seen some below zero temps.
I had the trans flushed and filter changed last fall.
Thx for any insight.