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 WarningInstrument Panel Center Air Outlet Duct Replacement Dashboard Assembly
Instrument Panel Center Air Outlet Duct ReplacementCalloutComponent NamePreliminary ProcedureRemove the instrument panel lower trim pad retainer. Refer toLower Trim Pad Retainer Replacement.1Center Air Outlet Duct Fastener (Qty:-1)Caution:Refer toFastener Caution.Tighten1.5-Y-(13-lb-in)2Center Air O ...