WARNING: If a service procedure indicates that a module is to be
replaced, a new
production unit MUST be ordered from the GM Parts Catalog or certified
supplier. Using a module that has been reset by a 3rd party company is strictly
prohibited. Not using a new production unit may result in improper
OnStar navigation requires a
specific OnStar service plan.
Press to receive Turn-by-Turn
directions or have them sent to the
vehicle's navigation screen,
if equipped.
Turn-by-Turn Navigation
1. Press to connect to an
Advisor.
2. Request directions to be
downloaded to the vehicle.
3. Follow the