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 WarningBattery Disconnect Warning
Warning: Unless directed otherwise, the ignition and start switch
must be in the OFF or LOCK position, and all electrical loads must be
OFF before servicing any electrical component. Disconnect the negative battery
cable to prevent an electrical spark should a tool or
equipment come in contact ...
Front Side Door Weatherstrip Replacement - Door Side
Front Side Door Check Bolt
Caution: Refer to Fastener Caution in the Preface section.
Tighten
25 N·m (19 lb ft)
Front Side Door Weatherstrip - Door Side
Procedure
Unclip weatherstrip 1. from front side door.
When removing protective liners from adhesive tape, be careful no ...
Installation Procedure
Align the rear compartment floor panel.
Drill 4 mm (3/16 in) for rivets along the edges of the rear compartment
floor were you cant apply a resistance spot welder.
Clean and prepare the attaching surfaces for
spot welding and riveting.
Apply structural adhesive to all a ...