GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1640435  Size: SH
  1. Remove the sound insulator. Refer to Instrument Panel Insulator Replacement .
  2. Ensure that the cruise control release switch retainer is fully seated in the bracket.
  3. Remove the cruise release switch from the switch retainer. Rotate the switch counter clockwise to release the switch.
  4. Pull back lightly on the brake pedal to ensure the system is fully released.
  5. While lightly holding the pedal, install and adjust the cruise release switch:
  6. 5.1. Insert the cruise release switch into the retainer.
    5.2. Ensure the switch plunger is fully depressed against the switch contact rubber bumper without deflecting the bracket or the switch contact arm on the pedal.
    5.3. Rotate the switch clockwise to secure the switch in the retainer.

    Object Number: 738588  Size: SH
  7. Release the brake pedal and inspect the switch barrel to switch contact rubber clearance (1).
  8. Specification
    Clearance should not exceed 1.2 mm (0.047 ).

  9. Ensure that the following contacts open at 25.4 mm (1 in) or less of pedal travel:
  10. • The cruise release switch.
    • The stop lamp and torque converter clutch (TCC) switch.
  11. Ensure the switches open simultaneously or before the onset of braking.
  12. The brake pedal may travel up to 25.4 mm (1 in) before the cruise control system disengages.
  13. Install the sound insulator. Refer to Instrument Panel Insulator Replacement .