Warning: The vehicles described in this manual are equipped with a Supplemental Restraint System (SRS), also known as an air bag system. Before carrying out work in the area where the elements of this system are located, it is necessary to disconnect its power supply, since accidental deployment of the airbags can result in serious injury (see chapter 12).
1. Disconnect the negative battery cable. Loosen the wheel nuts, raise the vehicle and install vertical supports. Remove the front wheel.
2. Remove the radiator grille as described in subsection 9.
3. Unscrew the mounting nuts and remove the footrest.
4. Remove the threshold trim and the frame trim (see illustrations).
13.4a. To remove the door sill trim, grasp it by the rear end, lift it up and pull it forward
13.4b. Remove the rear sill trim pin, then detach the clips
Note: On Trailblazer EXT and Envoy XL vehicles, only the front airbox fascia needs to be removed.
5. Pry up and remove the plastic rivets, unscrew the bolt and remove the wheel arch trim (see illustration).
13.5. Unscrew the bolt and remove the pins that secure the wheel arch trim
6. Performing the procedure from under the car, unscrew the mounting bolt located in the front wheel arch, the bolt located in the lower left corner, and also the bolt securing the wing to the door frame (see illustrations).
13.6a. After removing the wheel arch lining, unscrew the bolt located at the front...
13.6b.... the bolt that is in the lower left corner...
13.6s....and also the bolt that secures the wing to the door frame
7. Remove the upper wing mounting bolts (see illustrations).
13.7a. Unscrew the bolts securing the wing to the front body panel...
13.7b....and also the bolts located along the upper edge of the wing (marked with arrows; one of the bolts is not shown)
8. Detach the wing. To avoid damage to adjacent body parts when removing the wing, it is recommended to involve an assistant.
9. Installation is carried out in the reverse order of removal. Tighten all nuts, bolts and screws securely.
[The article was reprinted from the website: «ChevyMan»]