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 WarningDoor Locks
To lock or unlock the vehicle from outside, use the Remote Keyless Entry (RKE)
transmitter or the key.
From inside the vehicle, use the power door lock switch.
Power Door Locks
: Press to unlock the doors.
: Press to lock the doors.
Safety Locks
The rear door safety locks prevent passenge ...
Refrigerant Recovery and Recharging
Special Tools
GE-45037 A/C Oil Injector
For equivalent regional tools, refer to Special Tools.
Refrigerant Recovery and Recharging
Warning: To prevent personal injury, avoid breathing A/C Refrigerant
and lubricant vapor or mist. Work in a well ventilated area. To
remove refrigerant from the A ...
Battery Disconnect Warning
Warning: Unless directed otherwise, the ignition and start switch
must be in the OFF or LOCK position, and all electrical loads must be
OFF before servicing any electrical component. Disconnect the negative battery
cable to prevent an electrical spark should a tool or
equipment come in contact ...