See also:

Trailer Towing (CTS-V and Coupe)
The vehicle is neither designed nor intended to tow a trailer. ...

Adding Washer Fluid
The vehicle has a low washer fluid message on the DIC that comes on when the washer fluid is low. The message is displayed for 15 seconds at the start of each ignition cycle. When the WASHER FLUID ...

Temperature – A, B, C
The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions ...