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.

  1. Remove the left sound insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel Gauges, and Console.
  2. Disconnect the 3 electrical connectors.

  3. Object Number: 289628  Size: SH
  4. Remove the following components from the bracket (4):
  5. • The brake transmission shift interlock (BTSI) switch assembly (1)
    • The stoplamp switch assembly (2)

Installation Procedure


    Object Number: 289628  Size: SH
  1. Install the following components through the bracket (4):
  2. • The BTSI switch assembly (1)
    • The stoplamp switch assembly (2)
  3. Connect the 3 electrical connectors.
  4. Adjust the switch. Refer to Brake Release Switch Adjustment .
  5. Install the left sound insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel Gauges, and Console.