Power Seat Adjuster Mechanical Diagnosis
WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
The seat adjuster is not a serviceable item. If it is necessary to replace any component of the adjuster, replace the adjuster assembly. Refer to SEAT ADJUSTER MECHANISM REPLACEMENT - POWER .