Question about 2003 GMC Yukon Denali

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Hello there there is anyone that can tell me why there is a OC letters in my rear mirror any answers? thanks

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It means that you have an "open circuit" and you have to change the sensor or that the wiring between the sensor and the mirror is damaged. Most commonly is the sensor that should be located under the hood by the latch.

Posted on Jan 31, 2010

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1 Answer

Why is the letter c in the rear view mirror?


It means that the connector from the vehicle's computer system has come unplugged or is not making good connection. Check the connection at the back of the mirror.

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Temperature Sensor on Mirror is broken and reads OC.


Hello, my name is Be. You are correct, you most likely have a bad temperature sensor. The OC being displayed stands for "open circuit". You will need to replace the sensor, it's located at the front of your truck, under the hood, in front of the radiator, towards the top, usually on the driver's side. It really is a little hard to see because it doesn't look like much more than an ordinary bolt with two wires going to it. I think the new part is under $30.00 and it's easy to replace.

Jun 09, 2010 | 2001 Chevrolet Silverado 2500HD

1 Answer

Why does my rear view mirror read OC


Open Circuit, check the wiring/connector from the mirror. If the connector is ok, you may have a bad outside temperature sensor, good luck.

Jan 15, 2010 | 2005 Chevrolet Silverado 2500HD 2WD

1 Answer

Rear view mirror reads OC in the degree's location, what does it mean?


Try setting you display to the English mode and see if the OC goes away

Jan 15, 2010 | 2005 Chevrolet Silverado 2500HD 2WD

1 Answer

I have 2002 Yukpn Denali XL. There is a OC code that appears in the rear view. What is the cause of this and how can I fix it?


The "OC" indicates your compass is "Out of Calibration". Below is the proceedure to recalibrate your compass.

Compass Calibration
The compass may need calibration if:
 After five seconds, the display does not show a
compass heading (N for North, for example), there
may be a strong magnetic field interfering with the
compass. Such interference may be caused by a
magnetic antenna mount, magnetic note pad holder
or a similar magnetic item.
 The compass does not display the correct heading
and the compass zone variance is set correctly.
In order to calibrate, the letters CAL must be displayed
in the mirror compass windows. If CAL is not
displayed, push in the COMP button for approximately
eight seconds or until the letters CAL are displayed.
The compass can be calibrated in one of two ways:
 Drive the vehicle in circles at 5 mph (8 km/h) or less
until the display reads a direction, or
 drive the vehicle on your everyday routine and after
several turns the compass will become calibrated and
will display a direction.

Good luck.

Oct 23, 2009 | 2003 GMC Yukon XL

3 Answers

Dimming mirror temp is OC


OC means out of calibration,,, go to a big parking lot and drive in circles,this lets the compass relearn its position,if this doesnt work,,take it to the dealer there may be something else wrong

Oct 11, 2009 | 2002 Saturn VUE

1 Answer

I have a 2002 Chevy Tahoe Z71. In the rear view


first always check your fuses then if you have a autozone take it there and they can tell you what the code is and if you want to try it yourself they will give you instructions and print outs of where and how to do your job

Jul 20, 2009 | 2003 Mitsubishi Outlander

1 Answer

The temperature display on the rear view mirror shows OC


The temperature display on the rear view mirror my 2002 Trailblazer LT is either way incorrect - like obviously too high or too low - but mostly just shows "OC" all the time. Is this an expensive fix? Is this an easy fix that I could do myself? What do I need to replace and how

Jun 30, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

OC code in rear view mirror temp field


you could always try unplugging the battery for about ten minutes to see if that resets it. make sure you have the code for the stereo first if it requires one.

Mar 08, 2009 | 2003 Mitsubishi Outlander

1 Answer

2000 Pontiac Grand Prix Passenger Side rear view mirror


As the owner of a 2001 Grand Prix GTP I can tell you that the mirror you speak of is not terribly difficult to replace, but you need the tools to remove the inside panels in the front corner of the window to get to it. Once you get that off there should be three bolts/nuts that hold the mirror on and if you have power mirrors then of course you'll have an electrical connector in there as well.

I dont have any instructions wrote up but there is a Grand Prix car club forum you can check that may have some information on how to replace it in more detail. You can go to grandprixforums.net, sign up and post up your problem and Im sure someone there will probably have specific instructions.

Dec 31, 2008 | 2000 Pontiac Grand Prix

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