Q: How to replace the Seat Motor on Buick LeSabre?
A: Disabling the SIR system is the first step to replace any seat adjuster motor. First disconnect the seat from the vehicle while removing the seat cushion to reach the seat adjuster motors. Determine if the replacement motor should be installed on the rear vertical adjuster motor , front vertical adjuster motor or horizontal adjuster motor . Disconnect the electrical connector then detach the seat adjuster drive cables from their respective places. Detach the factory motor inserts which hold the motor in position to the bracket. Position the seat motor plate on a dry surface with facing upwards while employing a 3/16 inch drilling tool for removing the factory motor inserts positioned at the seat plate's bottom face. Place the new seat adjuster motor (1, 2, 3) onto the motor plate before fastening it by putting the motor insert into the grommet of the new motor. Use a bolt to fix the motor onto its corresponding motor plate. Fasten it until it reaches 4 N.m (36 lb in) torque. The next procedure involves reattaching the electrical connector followed by installing drive cables to the seat adjuster then placing back both the seat cushion and seat into the auto. The final stage includes enabling the SIR system with an option to perform memory seat calibration if needed.