See also:

Units
Select to display English or metric units of measure. Press the set/reset button to select when units is displayed. ...

Compass Variance (Zone) Procedure
1. Do not set the compass zone when the vehicle is moving. On an automatic transmission vehicle, only set it when the vehicle is in P (Park). On a manual transmission vehicle, only set it w ...

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 ...