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 WarningCompass
The vehicle may have a compass display in the Driver Information Center (DIC).
The compass receives its heading and other information from the Global Positioning
System (GPS) antenna, StabiliTrak, and vehicle speed information.
Avoid covering the GPS antenna, located on the roof, for long perio ...
Instrument Panel and Console Trim
Specifications
Instrument Panel Insulator Seal Replacement
Preliminary Procedure
Remove the instrument panel assembly. Refer to Instrument Panel Assembly
Replacement.
Instrument Panel Insulator Seal
Steering Column Upper Trim Cover Replacement
Preliminary Procedure
Remo ...
Windshield Washer Pump Replacement
Removal Procedure
Remove the front wheelhouse liner. Refer to Front Wheelhouse Liner
Replacement.
Disconnect the washer pump electrical connector (1).
Disconnect the washer pump hose (2) from the washer pump (3).
Using a small flat-bladed tool, remove the washer pump from the washer ...