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:

California Proposition 65 WarningPower Door Locks
Select Power Door Locks and the following may display:
Auto Door Unlock
Unlock Door Anti Lock Out
Delayed Door Lock
Auto Door Unlock
This allows selection of which of the doors will automatically unlock when the
vehicle is shifted into P (Park) or the key is removed.
Select All Doors, ...
Plastic Identification and Refinishing Systems
Plastic Identification and Refinishing Systems
Identifying Symbol?€“ Old Symbol in ( )s
Chemical Composition or Plastic Family Name
Typical Area(s) Where Part is Used
Examples of Common / Trade Names
Type of ...
Camshaft Position Actuator Adjuster Installation
Special Tools
EN-6340 Camshaft Adjuster Locking Tool
EN-6628-A Camshaft Locking Tool
EN-45059 Angle Meter
For equivalent regional tools, refer to Special Tools.
Note: Note the arrows.
Turn the camshaft by the hexagon until the groove on the end of the camshafts
is ...