GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Notice: Proper stoplamp switch adjustment is essential. Improper stoplamp switch adjustment could cause brake drag and excessive brake lining wear.


    Object Number: 161421  Size: SH
  1. Remove the left insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gauges and Console.
  2. Twist the upper switch (5) counterclockwise and remove.
  3. Disconnect the upper switch electrical connector.

Installation Procedure


    Object Number: 161421  Size: SH

    Important: When installing the brake pedal switches it is very important that the brake pedal remain in the full up or at rest position or damage to the brake system and/or switch incorrect adjustment may occur.

  1. Connect the upper switch (5) electrical connector.
  2. Install the upper switch (5) into the upper retainer. Face the switch connector to the 6 o'clock position.
  3. Important: The release switch assembly and the stoplamp switch assembly cannot be adjusted until after the brake booster pushrod is assembled to brake pedal assembly. Incorrect adjustment could cause the cruise control system to not work properly.

  4. Adjust the switch. Refer to Cruise Release Switch Adjustment .
  5. Install the left insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gauges and Console.