For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition
65 WarningCamshaft Cover Removal - Right Side Valvetrain Camshaft
Remove the ignition coil bolts.Remove the ignition coils.Remove the right camshaft cover bolts.Remove and discard the camshaft cover grommets and camshaftcover bolts if they are serviced with the grommet.Remove the right camshaft cover from the right cylinderhead. ...