"2006 Buick Lucerne: GPS Screen Problems"

2006 Buick Lucerne Red Front View

I have a 2006 Buick Lucerne the screen goes black on the radio GPS system. Now when the screen comes back on, it is much darker than before and in the background you can see the letters FM and or AM which never appeared before the trouble started. Has anyone else had this type of problem?

Answer: I believe there is a bulletin on that issue from GM. They have to update the radio with the current NAV disc.
Subject: Navigation Radio Intermittent Blank/Black Screen, Map Disc Read Errors, Features Not Accessible While Driving, Navigation Radio Resets Upon Start up (Update Navigation Radio Software)

Models: 2006-2008 Buick Lucerne

2008 Buick Enclave

2007-2008 Cadillac Escalade Models

2007-2008 Chevrolet Equinox

2007-2008 GMC Acadia

2007-2008 Pontiac Torrent

2007-2008 Saturn OUTLOOK, VUE

All Equipped with Navigation Radio (RPOs U3R, UZR, U3U, UVB)
Attention: This bulletin applies to vehicles sold in the U.S. and Canada only.

This bulletin is being revised to remove the NAV Disc Center Website information. Please discard Corporate Bulletin Number 08-08-44-013D (Section 08 — Body and Accessories).
Note: If the vehicle has a 2008 MY radio and the software version is 100M or higher (e.g. 100N) for the SuperNav navigation system (Escalades) or 100F or higher (e.g. 100G) for the BlackTie navigation systems (Lucerne, Enclave, Equinox, Acadia, Torrent, Outlook, and VUE), the improvements/corrections offered via update disc 20774148 are already installed and this update is not required. The screen will display the following message “The disc installed is not a MAP DVD”.

THIS IS NOT AN ERROR MESSAGE.

Condition
Customers may comment on any of the following conditions:

• The Navigation Radio display intermittently goes blank or turns black/off after switching video sources. This most commonly occurs when the shift lever is transitioned from PARK to REVERSE to DRIVE (or vice versa). Other possibilities include switching to DVD movie or Rear AUX (if equipped).

• The Navigation Radio screen may intermittently freeze, lock up or display “MAP DVD Read Error” messages.

• Some features may not be accessible while driving. This includes scrolling lists, address book and navigation related entries (i.e. entering a destination).

• The Navigation Radio, upon startup, will continue to display the vehicle logo repeatedly. This condition occurs when the vehicle language has been changed, using the Driver Information Center (DIC), in the previous ignition cycle.

Cause
These conditions may be caused by software anomalies.

Correction
Do This
Don’t Do This

Update the Navigation Radio software.
Do not replace the Navigation Radio.

Technicians are to update the Navigation Radio software using a software update disc, P/N 20774148.