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 WarningLiftgate Emblem/Nameplate Replacement (Hatchback)
Liftgate Emblem/Nameplate Replacement
Callout
Component Name
1
Liftgate Emblem/Nameplate Assembly
Caution: Refer to Exterior Trim Emblem Removal Caution.
Procedure
The part and surface should be 2 ...
Roof Rear Header Panel Replacement (5HB)
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair
Warning.
Disable the SIR system. Refer to SIR Disabling and Enabling.
Disconnect the negative battery cable. Refer to Battery Negative Cable
Disconnection and Connection.
Remove all ...
Ignition Coil Replacement
Special Tools
EN-6009 Remover and Installer Ignition Coil
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Remove the engine wiring harness guide (1) from the
cylinder head.
Disconnect the ignition coil electrical connector (2).
...