GM Service Manual Online
For 1990-2009 cars only
  1. Set the parking brake.
  2. Block the wheels.
  3. Remove the instrument panel steering column opening filler in order to access the shift indicator cable adjuster. Refer to Steering Column Opening Filler Replacement in Instrument Panel Gauges and Console.
  4. Place the shifter in Neutral.

  5. Object Number: 190616  Size: SH
  6. Move the adjuster in order to completely fill in the N window with the orange flag.

  7. Object Number: 190618  Size: SH
  8. This figure represents unacceptable orange flag placement.

  9. Object Number: 190617  Size: SH
  10. This figure represents acceptable orange flag placement.
  11. Verify the adjustment by moving the shift lever up and down slightly while in the Neutral detent.
  12. Allow the shift lever to rest in its relaxed Neutral position.
  13. Repeat the adjustment if necessary.
  14. The orange flag indicates proper gear location in every gear when the shifter is shifted through the entire transmission gear detent range.
  15. Return the shifter to Park.
  16. Install the instrument panel steering column opening filler. Refer to Steering Column Opening Filler Replacement in Instrument Panel Gauges and Console.
  17. Unblock the wheels.
  18. Release the parking brake.