GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Restraints 🢒 SIR 🢒 Shift Indicator Adjustment
  1. Position the lever in the neutral (N) gate notch.

    2. Object Number: 280840 Size: LH
  2. Move the automatic transmission control indicator adjuster (5) on the left side of the steering column (4).

    3. The flag of the position indicator will fill both of the dots above the N.

  3. Move the shift lever through all of the positions.
  4. Move the lever back to the N position in order to inspect the adjustment.
  5. Verify that the flag fills each of the graphic windows.

    6. The flag will not show two gear positions simultaneously.