If The System Needs Service; Database Coverage Explanations - Hummer 2004 H2 User Manual

Problems with Route Guidance
Inappropriate route guidance may occur under any of
the following conditions:
•
You have not turned onto the road indicated by the
system.
•
Route guidance is not available for the next right or
left turn.
•
The route is not changed during automatic rerouting.
•
Plural names of places are displayed.
•
You are driving at high speeds, which may cause
the automatic rerouting to operate slower.
•
The route prohibits the entry of a vehicle due to a
regulation by time or season or any other regulation
which may be given.
•
A route cannot be found.
•
A road is new, was recently changed or is not listed
on the DVD. The route to the destination may not
be shown. See "Ordering Map DVDs" later in
this section.
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If the System Needs Service

If you are still experiencing difficulty with your Navigation
System after reading this information, see your dealer
for assistance.
Ordering Map DVDs
The map DVD in your vehicle is the most up-to-date
information available when your vehicle was purchased.
The map DVD is updated once a year, provided that
the map information has changed. To order a new DVD,
contact your dealer.

Database Coverage Explanations

Coverage areas vary with respect to the level of map
detail available for any given area. Some areas will
feature greater levels of detail than others. If this
happens, it does not mean there is a problem with the
system. As the map DVD is updated, more detail
may become available for areas which previously had
limited detail. See "Ordering Map DVDs" earlier in
this section.