Caution
The vehicle does not need an
elaborate break-in. But it will
perform better in the long run if
you follow these guidelines:
Following break-in, engine speed and load can be gradually increased. |
Ignition PositionsDiagnostics
By monitoring and reporting on the
vehicle's key systems, OnStar
Advanced Diagnostics provides a
way to keep up on maintenance.
Capabilities vary by model. See
www.onstar.com for details and
system limitations. Message and
data rates may apply. Advanced
Diagnostics requires an active
OnSt ...