Hello, I have a 1998 Chevy Blazer 2D LS, the passenger side seat is broken (I believe) it wont move forwards nor backwards. I would like to know how to fix this, a part of the seat slider is off.. i don't know how or where it belongs, i just know it came off the seat. Any information will help a lot, thanks in advance

 

Pictures are worth a thousand words... literally, when it comes to something like this