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 WarningSpecial Tools (MIT Tool Instructions)
Bluetooth Pairing for Vehicles with
Radio RPO: UF7
Either reset the pin code on the radio to 0000, or go under Device Info on
the radio and see what the pin code is (to enter it later on the MIT).
Turn the BT discoverable ON in the radio Bluetooth
settings.
Press Pair De ...
P-Metric Sized Tires Description
245/50r16953typeloadindep-passengerttemporarylt-lighttruckspeedsymbolsectionwidth(millimeters)235245275construction(sectionwidth)ddagonal(bas)40sectionwidthsectionheight
Replacement tires should be of the same tire performance criteria (TPC) specification
number. This will ensure the same size, ...
Water Inlet Replacement (LUW)
Removal Procedure
Drain the engine coolant system. Refer to Cooling System Draining and
Filling.
Disconnect the engine coolant temperature sensor connector (1).
Remove the radiator outlet hose connector clip (2) and the radiator
outlet hose ...