Shifter=broken

I have a '98 Tahoe, and last night the damn shifter broke. It's still attached but you aren't shifting from gears, it moves freely. At the moment I can still drive it, but I have to have someone I really trust but their foot on the brake, while I climb underneath to manually shift it in to drive. Anyone every hear of this or have any idea what happend?

Check the shift cabel for broke or unplugged on either end.
MT

put ur ebrake on and shift, and maybe a large rock/brick in front of the tire in case youre still worried, thats how i do it, but i guess im kind of ghetto haha