Reactivation for Subsequent Owners
Push
and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle.
The Advisor will update vehicle records and will explain the OnStar service offers and options available.
See also:
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can
be obtained from your dealer.
...
Instrument Cluster
English Light Duty Premium Shown. Metric, Uplevel, Base and Heavy Duty
Similar.
For vehicles with a DURAMAX® Diesel engine, see the DURAMAX® Diesel Supplement for more information.
For vehicle ...
Grade Braking (6-Speed Automatic Transmission)
The Grade Braking shift modes can be activated by pressing the button on the end of the shift control lever.
While in Range Selection Mode, Grade Braking is deactivated allowing the driver to select ...





