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 WarningWindshield Washer Pump Seal Replacement
Removal Procedure
Open the hood.
Remove the windshield washer pump. Refer to Windshield Washer Pump
Replacement
Using a small flat-bladed tool, remove the washer pump terminal seal (1)
from the washer solvent container (2).
Installation Procedure
Position the washer pump ...
Front Side Door Window Adjustment
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface
section.
Warning: Refer to Express Window Down Warning in the Preface section.
Preliminary Procedure
Remove the front side door trim. Refer to Front Side Door Trim
Replacement.
Remove the water deflector. Refe ...
Service
This vehicle may have the new environmentally friendly refrigerant, R1234yf.
This refrigerant has a significantly reduced global warming impact on the environment,
compared to the traditional automotive refrigerant, R-134a. All vehicles have a
label underhood that identifies the refrigerant us ...