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:

California Proposition 65 WarningDrivetrain and Front Suspension Frame Replacement
Special Tools
EN-45059 Angle Meter
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Support the radiator and condenser from above using the upper brackets
on each side.
Raise the vehicle on a hoist. Refer to Lifting and Jacking the Vehicle.
Re ...
Heater Outlet Hose Replacement (LUV)
Heater Outlet Hose Replacement
Callout
Component Name
Preliminary Procedures
Drain the engine coolant. Refer to Cooling System Draining and Filling.
Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacemen ...
Exhaust Manifold with Catalytic Converter Replacement (LUW)
Exhaust Manifold with Catalytic Converter Replacement
Callout
Component Name
Warning: Refer to Protective Goggles and Glove Warning.
Warning: Refer to Exhaust Service Warning.
Preliminary Procedure
...