Retrieve My Number
1. Push 
. System responds:
“OnStar ready.” 2. Say “My Number.” System responds: “Your OnStar Hands-Free Calling number is.”
See also:
Roadside Assistance Program (U.S. and Canada)
For U.S.-purchased vehicles, call 1-888-881-3302; (Text Telephone (TTY): 1-888-889-2438).
For Canadian-purchased vehicles, call 1-800-268-6800.
Service is available 24 hours a day, 365 days a year.
...
Cleaning the Mirror
Do not spray glass cleaner directly on the mirror. Use a soft towel dampened
with water. ...
Maintenance when Trailer Towing
The vehicle needs service more often when pulling a trailer. See Maintenance Schedule on page 11‑3. Things that are especially important in trailer operation are automatic transmission fluid, en ...