Symptoms - Navigation Systems. Buick Lucerne 2007

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2007 🢒 Lucerne 🢒 General Information 🢒 Vibration Diagnosis and Correction 🢒 Symptoms - Navigation Systems

Important: The following steps must be completed before using the symptom tables.

•	Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of the following are true:

-	There are no DTCs set.

-	The control modules can communicate via the serial data link.

•	Review Navigation System Description and Operation in order to familiarize yourself with the system functions.

•	Inspect for aftermarket devices which could affect the operation of the navigation system components. Refer to Checking Aftermarket Accessories .

•	Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

•	No Global Positioning System (GPS) Reception

•	Navigation System - Poor or Inoperative TV Reception .

•	Navigation System - Voice Recognition Inoperative

•	Navigation System - Voice Guidance Inoperative or Degraded Quality

•	For radio/audio related symptoms, refer to Symptoms - Entertainment .