GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 2040554  Size: SH
  1. Remove the diagnostic plug to instrument panel (I/P) insulator panel retaining screws (2).
  2. Remove the diagnostic plug (1) from the I/P insulator panel (3).

  3. Object Number: 2156144  Size: SH
  4. Grasp the I/P insulator panel (2) and carefully pull downward to disengage the retaining clips.
  5. Where fitted, disconnect the courtesy lamp socket assembly (1) from the I/P insulator panel (2) by turning the socket counterclockwise.
  6. Remove the I/P insulator panel (2).

Installation Procedure


    Object Number: 2156144  Size: SH
  1. Where fitted, connect the courtesy lamp socket assembly (1) to the I/P insulator panel (2).
  2. Important: Listen for an audible click to confirm correct fitment of the retainers.

  3. Install the I/P insulator panel (2) to the I/P.

  4. Object Number: 2040554  Size: SH
  5. Install the diagnostic plug (1) to the I/P insulator panel (3).
  6. Notice: Refer to Fastener Notice in the Preface section.

  7. Install the diagnostic plug to I/P insulator panel retaining screws (2).
  8. Tighten
    Tighten the screws to 2  N·m (18 lb in).