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 WarningTyre and Wheel Removal and Installation
Removal Procedure
Raise and suitably support the vehicle. Refer to Lifting and Jacking the
Vehicle.
Remove the wheel center cap.
Mark the relationship of the wheel (2) to the hub.
Remove the wheel nuts (1).
Warning: If penetrating oil gets on the vertical surfaces between the ...
Seat Heating and Cooling
Specifications
Heated/Cooled Seat Schematics
Front Seat Heater Control Module Replacement
Preliminary Procedure
Driver or passenger seat replacement. Refer to Driver or Passenger Seat
Replacement.
Front Seat Heater Control Module Bolt (Qty: 2)
Caution: Refer to Fastener Cauti ...
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR Disabling and Enabling.
Disconnect the negative battery cable. Refer ...