Question about Cadillac Escalade

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2003 escalade with on star and temperature guage in rearview mirror. all lights and onstar works fine. temperature and compass went out while driving down the road. Can't determine which fuse to look at. miss my temperature guage. rolling down the window is old fashioned.

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  • aworner Aug 13, 2011

    tried fuse. it was ok!
    what I really need is a diagram with pinouts to check voltages at the mirror. I have had the mirror connector off but don'y know what pis to check.

  • aworner Aug 13, 2011

    tried fuse. it was ok! what I really need is a diagram with pinouts to check voltages at the mirror. I have had the mirror connector off but don'y know what pins to check. thanks

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No diagram that I have lists a specific fuse for the display, but there is one tagged INFO. look st the fuses. In the lower right corner there are four fuses in a square pattern. Of those four, the INFO fuse is the upper left one, a 15 amp fuse. That seems to be the most likely one for your problem, if it is a fuse problem and not a failure due to a burned out display or a broken wire.

Posted on Aug 11, 2011

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Posted on Jan 02, 2017

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The interior rear view mirror has temperature and compass displays, but only work for a short time at start- up.I have tried unplugging the harness on the back of the mirror and cleaning contacts. It`s...


Temperature Display
The inside rearview mirror supplies a 5 volt signal circuit and low reference circuit to the ambient air temperature sensor. The inside rearview mirror monitors and records the voltage on the signal circuit of the ambient air temperature sensor. The inside rearview mirror uses this recorded voltage to display the temperature on the temperature display portion of the compass/temperature display. The temperature display will show "ICE" when the ignition is first turned on and the current temperature is 3°C (37°F) or below. The display will toggle between "ICE" and the actual outside temperature for approximately 4 minutes.
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Hiya...ALL factory-installed rearview mirrors are installed with different wires due to options.
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However, the wires are located inside the front headliner which requires removing the sunvisor (and possible removal of interior plastic trim part at the left/right ends of the windshield) prior to pull the headliner down, and a small metal philips or torx screw is used to secure the rearview mirror onto the bracket glued to the windshield.

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