Oldsmobile Ciera Transmission Not Shifting

I Have A 1996 Oldsmobile Cutlass Ciera With A 3.1sfi Motor, I Am Haveing A Problem At Speeds Between 35-40. It Seems Like It Will Not Shift...

Hi I Have A 1993 Oldsmobile Cutlass Ciera When I Get Going It Doesnt Down Shift I Get To 35 Mph And Its Not Shifting Also It Was Shifting...

Changed Fluid And Filter At 100,000 Miles. When Going Uphill, Trans Won't Downshift Into 2nd Gear. At 10 To 20 Mph, Trans Will Downshift...

Transmission Up-shifts Fine, But When Slowing Down To A Complete Stop, I Rev It Up And It's Like It's In Neutral. I Shift To Another...

When Driving At Low Speeds Up To 40 Trans Downshifts Fine. When Driving On Highway At 50 Or Above And Then Taking An Off Ramp And Stopping...