1. Remove the front mudguards, see. "Removal and installation wheel arch liners and mudguards").
2. In the right wheel arch, squeeze the clamps and disconnect the outside temperature sensor wiring harness connector.
3. In the left and right wheel arches, unscrew one screw securing the bumper to the front fenders.
4. Turn out the two side...
5. ... and one central screw securing the front engine mudguard to the bumper.
6. Remove the four bolts securing the front bumper to the radiator frame.
NOTE: This is the location of the bolts that secure the front bumper to the radiator frame.
7. Pull out the cores of the six pins that secure the front bumper to the radiator frame...
NOTE: This is how the pins that secure the front bumper to the radiator frame are located.
8. ...and remove the pistons.
9. Remove the edges of the bumper from the holders on the front fenders...
10. ...and remove the bumper.
11. If necessary, remove the upper and lower radiator grilles from the front bumper by pressing the latches on the inside of the bumper.
12. Install the front bumper in the reverse order of removal.
(The material was created based on information from the website ChevyMan.ru)