Transmission Not Go Into Gear problems of the 2006 Kia Motor Spectra

Upon entering the highway, the transmission seemed to lag. I could not go over 50 mph. And oncoming traffic including an 18 wheeler seemed to almost stop or I would have been killed! this problem has developed over the last year where the car gets stuck in 3rd gear and acceleration is poor or the transmission does not change gears. If it sits for a while it has an engine light on and still acts up for a while then finally goes back to working correctly. The problem today was the first life threatening incident and therefore I believe it is a recall! this problem has been reported for 5 model years affected: 2005, 2006, 2007, 2008, more! this is life threatening and needs to be a recall as it has been found as a software update but others on line say there is a soldering problem in the transmission. This should not be something the public should be spending money on when it is a failure due to manufacture or a software glitch or both!.