Rarely does it happen, but the plug for the DIC has come loosened or just fell off. You have to remove the instrument panel(IP). Take it apart to check. Most times the problem is a bad solder joint.
SOURCE: DIC doesn't work
Are you talking about the one in the roof console, near the windshield?
With the key OFF:
Depress and hold the MODE and the ENGLISH/METRIC buttons.
With these two buttons still depressed, turn the ignition switch to the RUN position.
When you do this all display segments will light for 2 seconds then off for 2 seconds, then it should show "PS" then turn off. After this, then unit may show E1, E2, E3 or E4. If E and a number (E1) didn't come up, then there are no errors in the System.
Turn the van off, then....to set the compass, find your location on the map picture. The number you fall under is your zone number.
Turn the ignition ON.
Cycle the driver information center (DIC) to the Compass/Temperature mode.
Press both the E/M and the MODE buttons for approximately 5 seconds.
The last entered variance zone number will be displayed.
Press the E/M button until the proper variance number (See picture) is showing.
Press the MODE button in order to set the new variance zone and resume normal operation.
Note: The features are controlled by outside data. The only feature that is self contained in the unit is the compass, and if it is not working correctly, then the unit is malfunctioning and I would suggest replacing it with a new one.
Perform these steps on more time. If it still does not work right, then the unit will need to be replaced.
Turn the ignition ON.
Cycle the driver information center (DIC) to the Compass/Temperature mode.
Press both the E/M and the MODE buttons for at least 10 seconds until the calibration symbol appears.
Release both buttons once the calibration symbol appears.
Complete 3 360° turns in an area free from large metal objects.
But I would wait before replacing it. Drive it around normal for a day first. If it nothing happens then, then replace it. The compass will not always calibrate right away.
Good luck and hope this helps.
SOURCE: 2007 chevy silverado slow filling gas tank
vent tube must be blocked off, check the tube first, thanks robert b.
SOURCE: 2007 silverado. dic display does
the display is faulty ready to burn out soon since its weak now
SOURCE: 2007 chevy silverado running lights for trailer
Sounds to be in your pig tail. Might take some electronic spry cleaner , WD/40 work sometimes. Should just be in the connection. good luck
SOURCE: 2007 Chevy Tahoe...The DIC Didplay
{: ) If you are referring to the IPC message screens going blank, and the gages and warning indicators seem to be working normally, the problem is not the fuse but an IPC internal circuit fault.. So better be ready for a new one. A replacement IPC will be that of later model versions. It will be programmed to your vehicle, and the mileage record will be reset to zero.
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