need a liil help

i have a 2000 tahoe lt 5.3,the front seat go back and front like its off its tracks.but
its not is there any way to tighten them down so they stay still and only  move wen i adjust the seat. now also dose anyone one have any seats for sale for the same kind of truck.
 
 
 
thanks

Check for loose nutts on the bottom and also a loose nutt behind the wheel :)  Now go away

quote:

ORIGINAL: AZSCTACO

Check for loose nutts on the bottom and also a loose nutt behind the wheel :)  Now go away