GM Service Manual Online
For 1990-2009 cars only
  1. Position the shift lever in PARK.

  2. Object Number: 1857997  Size: SH
  3. Release the shift control cable adjustment lock cover retaining tab (1) on the bottom side.

  4. Object Number: 1858001  Size: SH
  5. Slide the shift control cable adjustment lock cover (2) forward exposing the adjustment lock.
  6. Carefully squeeze the adjustment lock tabs (1) inward to disengage the adjustment lock.

  7. Object Number: 1858002  Size: SH
  8. Lift the shift control cable adjustment lock (3).
  9. The shift control cable (1) and cable end (2) are free to slide to proper adjustment. Ensure the shift lever and transmission are both in the PARK position.

  10. Object Number: 1858004  Size: SH
  11. Depress the shift control cable adjustment lock (1) to lock the adjustment.

  12. Object Number: 1858006  Size: SH
  13. Slide the shift control cable adjustment lock cover (1) over the adjustment lock.
  14. Inspect the operation of the starting system with the shift lever in each position. The engine should only crank when the lever is in the PARK or NEUTRAL position.