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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > OEM Issues

OEM Issues Original Equipment Repairs and/or Problems

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  #1  
Old 10-01-2010, 04:31 PM
tedseven tedseven is offline
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2002 Olds Bravada
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auto dimming mirrors stay dark

Hi,
I have an 02 Bravada with a problem. The drivers outside mirror and the inside mirror go dark when the ignition is turned on.

I imagine that it is an expensive fix so I would consider simply deactivating the dimming feature if I could locate the correct fuse(s).

Has anyone had this problem?

Thanks
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  #2  
Old 10-02-2010, 11:54 AM
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the roadie the roadie is offline
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They stopped offering that option on the outside mirrors by the time I got my 2004 and the factory shop manual. So I don't know where it gets its power but it's probably shared with other functions. You might get away cheaper just looking for a replacement mirror (that just pops into place) on Ebay.

But the inside mirror fuse is IGN-E, fuse #22 under the hood. But again, if you pull the fuse, you may lose other functions you want to keep. There should be an on-off switch on the mirror for the electrochromic function, isn't there?
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  #3  
Old 10-02-2010, 03:16 PM
mwfaith1971 mwfaith1971 is offline
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Quote:
Originally Posted by the roadie View Post
There should be an on-off switch on the mirror for the electrochromic function, isn't there?
Yes there is. This is straight from the owners manual:
Quote:
Automatic Dimming Feature
When turned on, an electrochromic mirror automatically
dims to the proper level to minimize glare from any
headlamps behind you after dark.
The automatic dimming feature is turned on and off by
pressing the far left button, located on the lower part of
the mirror face, for up to three seconds. A light on the
mirror will be lit when the feature is turned on. It will go
out when the feature is turned off.
Matt
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  #4  
Old 10-02-2010, 07:03 PM
tedseven tedseven is offline
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2002 Olds Bravada
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auto dimming mirror

Thanks for the help. you are right..there is a power on/off button on the left side of the inside mirror that deactivates the dimming feature. Unfortunately, when I restart the car the mirror defaults to "on" and the mirrors go dark again...even in daylight. So, obviously something is wrong.

Ted 02 Bravada
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  #5  
Old 10-02-2010, 07:33 PM
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06 Envoy 06 Envoy is offline
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Unplug the harness behind the mirror. The outside mirror dims with the interior mirror.
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  #6  
Old 10-05-2011, 09:47 AM
Nozzleman Nozzleman is offline
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This is an old thread but this info may help someone.
Yes, the inside rear view mirror controls the dimming for both the inside and outside mirrors. There are two light sensors on the mirror. One faces out the front and tells the mirror whether it is day or night. The other faces the rear and tells it if headlights are shining in. The mirror only dims when it is night time and lights are shining in from the rear.

The most common cause of your problem is when someone hangs something from the mirror and blocks the front sensor. The mirror thinks that it's night time and daylight triggers the other sensor. result, dim mirrors during the day.
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  #7  
Old 10-05-2011, 11:19 AM
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bartonmd bartonmd is offline
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Wow, several replies already, and not a single "once you go dark" joke applied to the mirror?

Mike
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  #8  
Old 10-08-2011, 02:44 PM
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bullguy bullguy is offline
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Quote:
Originally Posted by Nozzleman View Post
This is an old thread but this info may help someone.
Yes, the inside rear view mirror controls the dimming for both the inside and outside mirrors. There are two light sensors on the mirror. One faces out the front and tells the mirror whether it is day or night. The other faces the rear and tells it if headlights are shining in. The mirror only dims when it is night time and lights are shining in from the rear.

The most common cause of your problem is when someone hangs something from the mirror and blocks the front sensor. The mirror thinks that it's night time and daylight triggers the other sensor. result, dim mirrors during the day.
You are absolutly right i had the same problem my car deodrant was blocking back side of the mirror thus activating the night sensor
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  #9  
Old 10-08-2011, 05:10 PM
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CdnGMan CdnGMan is offline
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Quote:
Originally Posted by bartonmd View Post
Wow, several replies already, and not a single "once you go dark" joke applied to the mirror?

Mike
Silly rabbit... it's "once you go black..."
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