NAV/Radio Going Blank!
10-19-2011, 11:27 AM
#1
Burning Brakes
Thread Starter
NAV/Radio Going Blank!
I have a 2008 coupe with factory NAV/radio. Car has 59,000 miles on it. Took it to the dealer about a month ago with the problem of the screen going blank and all controls "frozen". Only way to get the radio to shut off/change channels/volume was to shut the car off and re-start. Found out there was a TSB out about this in which new software needed to be installed. Dealer did it (Charged $100.00 for 5minutes of work). Same problem is occurring. Dealer now says" Radio has internal fault". Need to replace-$1800
Need some opinions please- Should this be replaced at no cost to me?
If not, I would think there are better (and less costly) options out there. Also, if I cannot get GM to help out, I also installed the remote 6 CD changer in the back. I would need a system that would work with that.
Thanks in advance
Need some opinions please- Should this be replaced at no cost to me?If not, I would think there are better (and less costly) options out there. Also, if I cannot get GM to help out, I also installed the remote 6 CD changer in the back. I would need a system that would work with that.
Thanks in advance
10-19-2011, 01:57 PM
#2
Burning Brakes
Thread Starter
Anyway, on the repair slip I got back it says:
58819 Radio Internal Fault
I don't know if that is the code.
10-19-2011, 02:14 PM
#3
Burning Brakes
Thread Starter
I don't recognize that code.
But if you have this, you are screwed:
DTC B2474
Diagnostic Instructions
• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC B2474 07: Navigation Display Head Backlighting Performance
Circuit Description
The internal backlighting of the navigation display screen located in the navigation radio.
Conditions for Running the DTC
• Radio ON.
• Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
• The navigation radio tests the navigation display backlighting every 1 second.
• The radio determines there is a malfunction or overheat condition in the navigation display backlighting.
Action Taken When the DTC Sets
Navigation backlighting may be too bright, dim or blank.
Conditions for Clearing the DTC
• The condition responsible for setting the DTC no longer exists.
• A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Diagnostic Aids
Occasionally it is possible to overheat the navigation display backlighting due to excessive ambient heat inside the vehicle. In this instance it may be necessary to allow time for the display to cool.
Reference Information
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Navigation System Description and Operation
Electrical Information Reference
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
1. Ignition OFF, allow the navigation display to cool if the ambient temperature inside the vehicle is excessive and the radio is hot to the touch. Verify the navigation display is cool and the DTC has cleared and gone to history.
2. Ignition ON, with a scan tool, clear all DTCs and operate the audio/navigation system within the Conditions for Running the DTC. Verify the DTC does not reset.
⇒ If the DTC resets, replace the radio.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for Radio replacement, setup, and programming
But if you have this, you are screwed:
DTC B2474
Diagnostic Instructions
• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC B2474 07: Navigation Display Head Backlighting Performance
Circuit Description
The internal backlighting of the navigation display screen located in the navigation radio.
Conditions for Running the DTC
• Radio ON.
• Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
• The navigation radio tests the navigation display backlighting every 1 second.
• The radio determines there is a malfunction or overheat condition in the navigation display backlighting.
Action Taken When the DTC Sets
Navigation backlighting may be too bright, dim or blank.
Conditions for Clearing the DTC
• The condition responsible for setting the DTC no longer exists.
• A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Diagnostic Aids
Occasionally it is possible to overheat the navigation display backlighting due to excessive ambient heat inside the vehicle. In this instance it may be necessary to allow time for the display to cool.
Reference Information
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Navigation System Description and Operation
Electrical Information Reference
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
1. Ignition OFF, allow the navigation display to cool if the ambient temperature inside the vehicle is excessive and the radio is hot to the touch. Verify the navigation display is cool and the DTC has cleared and gone to history.
2. Ignition ON, with a scan tool, clear all DTCs and operate the audio/navigation system within the Conditions for Running the DTC. Verify the DTC does not reset.
⇒ If the DTC resets, replace the radio.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for Radio replacement, setup, and programming
