WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Open the hood.
Fig 1: View Of Hood Side Bumper
Courtesy of GENERAL MOTORS CORP.
Remove the hood side bumper (1) from the fender by sliding the bumper rearward.