Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System.
If a diagnostics check is needed between e-mails, push 
, and an Advisor can run a check.
See also:
Playing from a USB
A USB mass storage device or Microsoft Transfer Protocal (MTP) device can be
connected to the USB port.
The USB port is in the center console.
The USB icon displays when the USB device is connecte ...
Reprogramming Universal Home Remote Buttons
Any of the three buttons can be reprogrammed by repeating the instructions. ...
License Plate Lamp
To replace one of these bulbs:
1. Open the liftgate partway. See Liftgate on page 2‑9.
Passenger Side Shown, Driver Side Similar
2. Push the left end of the lamp assembly toward the right.
...