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 WarningTaillamps, Turn Signal, Stoplamps, and Back-Up Lamps
Sedan Taillamp Shown, Hatchback Taillamp Similar
Back-up Lamp
Turn Signal Lamp
Stop Lamp/Taillamp
Sidemarker Lamp
To replace one of these bulbs:
Open the trunk.
Remove the two screws, which secure the taillamp assembly.
Remove the taillamp assembly by pulling it straight ...
Front Side Door Outer Panel Replacement
Removal Procedure
Note: According to different corrosion warranties, only the regional
mandatory joining methods are allowed.
Disable the SIR System. Refer to SIR Disabling and Enabling.
Disconnect the negative battery cable. Refer to Battery Negative Cable
Disconn ...
Front Floor Console Cover Replacement (Manual Transmission)
Removal Procedure
Use a flat bladed plastic trim tool in order to release
the retainers securing the console cover (1) to the console assembly.
Reach under the console cover assembly (1) and release
the retainer tabs securing the transmission s ...