GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1877641  Size: SH
  1. Open and support the hood.
  2. Remove both wiper arm assemblies. Refer to Windshield Wiper Arm Replacement .
  3. Disengage the hood rear corner seal assembly from the fender flange.
  4. Important: The passenger side air inlet grille panel must be removed first then the driver side can be removed.

  5. Release and remove the 5 retainers (1) securing the air inlet grille panel to the upper plenum.

  6. Object Number: 1877642  Size: SH
  7. Lift the inside edge of the air inlet grille panel (2) and swing the panel inward, releasing the tabs from the lower windshield edge.
  8. Disconnect the windshield washer hose from the washer nozzle (1).
  9. Disconnect the washer hose from the bottom side of the air inlet grille panel.
  10. Remove the passenger side air inlet grille panel from the vehicle.

  11. Object Number: 1877643  Size: SH
  12. Release the 3 retainers (1) from the driver side of the vehicle.

  13. Object Number: 1877645  Size: SH
  14. Lift the inside edge of the air inlet grille panel over the 2 wiper transmission pivot shafts and disconnect the washer hose from the washer nozzle.
  15. Disconnect the windshield washer hose (1) from the bottom side of the air inlet grille panel.
  16. Remove the driver side air inlet grille panel (2) from the vehicle.
  17. Ensure the air inlet grille panel side seals are secure to the grille panel.

Installation Procedure


    Object Number: 1877645  Size: SH
  1. Position the driver side air inlet grille panel (2) to the plenum area.
  2. Secure the windshield washer hose to the bottom side of the air inlet grille panel.
  3. Install the driver side air inlet grille panel (2) to the vehicle.
  4. Position the panel behind the hood hinge and over the wiper transmission pivot shafts.
  5. Connect the windshield washer hose (1) to the windshield washer nozzle.

  6. Object Number: 1877643  Size: SH
  7. Align the holes in the air inlet grille to the holes in the plenum.
  8. Install the retainers (1), push the centers of the retainers inward to secure.

  9. Object Number: 1877642  Size: SH
  10. Position the passenger side air inlet grille panel (2) to the plenum area.
  11. Secure the windshield washer hose to the plenum and to the washer nozzle (1).
  12. Position the panel around the hood hinge and ensure the tabs on the backside of the panel are located under the bottom edge of the windshield.

  13. Object Number: 1877641  Size: SH
  14. Align the holes in the air inlet grille panel to the holes in the upper plenum.
  15. Install the 5 retainers.
  16. Push the center of the retainers inward to secure.
  17. Apply the hood rear corner seal assembly to the air inlet panel, apply adhesive if needed to secure.
  18. Secure the 9 retaining clips inside the sealing strip to the air inlet grille panel.