the passenger side seat will recline back and forth but it will not move back nor forth.

i doubt its electrical because the the reclining switch works fine, so wouldnt it be on the same circuit?

any ideas on a fix?

 

It's you're switch, I had the same problem mine would'nt recline back and forth. But it would go back and forth. Dealer replaced mine under warranty.

 

there is a tsb about this where you have to replace the motor assembly and screw assembly. it has been discussed before, just search