GM Service Manual Online
For 1990-2009 cars only

The Seat Jerks or Moves with Difficulty when Adjusted Horizontally

Checks

Action

The adjuster shoes and channels are not properly lubricated.

Lubricate the carriages and the seat adjuster slides with a lithium base grease.

The adjuster horizontal actuator gear is too tight to the rack gear.

  1. Inspect the transmission assembly.
  2. Tighten the mounting screws or replace the assembly, if needed.