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 WarningBody Panel Paint Protector Replacement (VGC)
The paint protective film and vehicle surface temperature should be 13?€“32?°C
(55?€“90?°F) for best results.
Automatic car washes should be avoided for at least 24?€‰hours after the
paint protective film application.
Wipe the vehicle surface with isopropyl alcohol or fl ...
Hydraulic Brake System Bleeding (Manual)
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid Effects on Paint and Electrical Components
Caution.
Caution: Only use products that comply with GM specifications and
check manufacturer information respectively. We recommend the use of GM genuine
...
Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and
Connection
Removal Procedure
Note: Perform the following procedure when removing the retaining
rings and cooler lines from the quick connect fittings located on the
radiator and/or the transmission.
Pull the plastic cap back from the quick connect fitting
and dow ...