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 WarningInstallation Procedure
Create 5 x 18 mm (4/16 x 11/16 in) slots for MIG-brazing along the edges
of the tail lamp pocket as noted f rom the
original panel.
Note:
Clean and prepare the attaching surfaces for brazing.
Position the tail lamp pocket on the vehicle.
Verify the fit of the ta ...
Shock Absorber Disposal
Warning: Use the proper eye protection when drilling to prevent
metal chips from causing physical injury.
Clamp the strut in a vise horizontally with the rod ( 1) completely
extended.
Drill a hole in the strut at the center of the end cap (3) using a 5 mm
(3/16 in) drill bit. Gas o ...
Front Bumper Impact Bar Replacement
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR Disabling and Enabling.
Disconnect the negative battery ...