GM Service Manual Online
For 1990-2009 cars only

Power Seat Adjuster Vertical Chuck or Looseness for Chevrolet Astro - 2WD 2000

There is Vertical Chuck or Looseness When the Seat is Adjusted

Problem

Action

There is excessive clearance at the vertical gearnut tension spring.

Grind down the top of the gearnut shoulder nut 0.40-1.19 mm (1/64-3/64 in).