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I have a 2002 Monte Carlo LS
The drivers seat goes up and down but not back and forth. I can hear and feel the motor and a cable spinning but nothing happens. Any suggestions?
Please

 

The horizontal drive cable is broken or disengaged from the connector.

Test by removing the nut that holds the drive motor for access to the cable connector on the door side of the seat and squeeze the oblong connector to disconnect the cable. Operate the switch to see of the cable spins. You might have to remove the seat to replace the cable.

http://www.ebay.com/itm/GM-OEM-Seats...hWSbfT&vxp=mtr

Please let us know what you find.