[70rs]

I have a 2000 Silverado 4x4 with a 4l60e trans. Now instead of being a 4 speed auto with reverse, it's more like a powerglide with no reverse. It lost second gear and overdrive, plus reverse died too.

Any suggestions on which trans to replace it with (for a upgrade) . Or what mods can be done to this current one to up grade it during a rebuild?.