WARNING: This page is about a different car, the 2011 Chevrolet Cruze. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Hydraulic Valve Lash Adjuster Arms
Courtesy of GENERAL MOTORS CORP.
NOTE:
Mind the installation position of the hydraulic valve lash adjuster arms.
Remove the 16 hydraulic valve lash adjuster arms (1).