Transmision Won't Change Gears

The other day I was driving my 97 Camaro Z-28 I was going about 60mph when I accelerated the engine reved but it did not speed up. I thought nothing much about it, then the other day the tranny would not switch gears from 2 to 3. If I press the pedal all the way down it will speed up but immediately slow back down to second. It has great power on 1 and 2 gear. Thoughts?

no idea unless u somehow fucked ur 3rd gearplates up. Can u shift it manually into 3rd?

2-3 clutch pacs are burned. Time for a rebuild, ur tranny is slipping.