For 1990-2009 cars

1. Operate the seat to a full-up position and approximately to a 3/4 full-forward position.
2. Loosen the horizontal actuator screws (1).
3. Apply outward pressure on the horizontal actuator using a large screwdriver. Simultaneously, energize the horizontal switch in order to move the seat forward and backward slightly. This helps tighten the horizontal actuator pinion gear teeth and eliminate any movement between the gear teeth.
4. Tighten the actuator attaching screws (1) while maintaining an outward pressure against the horizontal actuator.