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 WarningRear Side Door Adjustment
Rear Side Door
Caution: Refer to Fastener Caution in the Preface section.
Procedure
Loosen the rear door hinge bolt (Qty: 4) to adjust the rear door.
Adjust the rear door in order to obtain an even gap between the rear
door and the roof, the quarter outer panel, the
rocker pan ...
Rear Bumper Fascia Replacement
Preliminary Procedure
Remove the tail lamps. Refer to Tail Lamp Replacement.
Rear Bumper Fascia Retainer (Qty: 2)
Rear Wheelhouse Liner Bolt (Qty: 6)
Caution: Refer to Fastener Caution in the Preface section.
Tighten
2.5 N·m (23 lb in)
Rear Bumper Fascia
Procedure
Pull th ...
Front Bumper Fascia Guide Replacement
Preliminary Procedure
Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement.
Front Bumper Fascia Guide Rivet (Qty: 2)
Headlamp Bolt
Caution: Refer to Fastener Caution in the Preface section.
Tighten
2.5 N·m (23 lb in)
Front Bumper Fascia Guide
Front Bumper ...