Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
Automatic EPB Release
The EPB will automatically release if the vehicle is running, placed into gear,
and an attempt is made to drive away. Avoid rapid acceleration when the EPB is applied,
to preserve parking brake li ...
Total Weight on Your Vehicle's Tires
Be sure the vehicle's tires are inflated to the upper limit for cold tires. These
numbers can be found on the Tire and Loading Information label. See Vehicle Load
Limits . Make sure not to go ...
Three-Way Calling
Three-way calling must be supported on the cell phone and enabled by the wireless
service carrier.
1. While on a call, press .
2. Say “Three-way call.”
3. Use the dial or call command to dial ...