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 WarningSafety Locks
The rear door safety locks prevent passengers from opening the rear doors from
inside the vehicle.
Manual Safety Locks
If equipped, the safety lock is located on the inside edge of the rear doors.
To use the safety lock:
1. Insert the key into the safety lock slot and turn it so the slot is ...
Front Side Door Lock Cylinder Coding (Free Wheeling)
Special Tools
BO-49753 Assembly Tool
The door lock cylinder uses 8 of the 8?€‰cut positions. The tumbler positions
are staggered from side to side, 4 on one side and 4 on the other, are not self-retaining,
and are not snap in.
Note: All lock cylinders for side milled keys ha ...
Engine Replacement
Special Tools
EN-48244 Engine Assembly Remove/Install Pallet Supporter
Removal Procedure
Remove the battery and battery tray. Refer to Battery Tray Replacement.
Relieve the fuel system pressure. Refer to Fuel Pressure Relief.
Recover the refrigerant. Refer to Refrigera ...