See also:

Conditions in Which Remote Start Will Not Work
The remote vehicle start feature will not operate if any of the following occur: - The ignition is in any position other than LOCK/OFF. - A keyless access transmitter is inside the vehicle. ...

Remote Control
To use the remote control, aim it at the transmitter window at either seatback console and press the button. Direct sunlight or very bright light could affect the ability of the RSE transmitter ...

Fluids
Proper fluid levels and approved fluids protect the vehicle’s systems and components. See Recommended Fluids and Lubricants for GM approved fluids. - Engine oil and windshield washer fluid ...