GMC Terrain: OnStar Additional Information
- Transferring Service
- Reactivation for Subsequent Owners
- How OnStar Service Works
- Services for People with Disabilities
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 v ...
Transferring Service
Push to request account transfer
eligibility information. The Advisor can assist in canceling or removing account
information. If OnStar receives information that vehicle ownership has changed,
...
See also:
Overinflated tires
WARNING Follow recommended tire inflation pressures. Do not overinflate tires.
Overinflated tires can adversely affect handling and ride comfort, wear unevenly,
increase stopping distance, an ...
Summer tires
Summer tires are high-speed capability
tires best suited for highway driving under
dry conditions.
Summer tires are inadequate for driving
on slippery roads such as on snowcovered
or icy road ...
Average speed
The system calculates the average speed from
the last resetting. Reset using RESET. ...