Gentex K21 Auto-Dimming Rear View Mirror w/Compass and Temp

(2008 Chevy Silverado | Change Vehicle)

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Gentex Auto Dimming Mirro w/Compass and Temperature
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Features

  • The Gentex K21 Auto-Dimming Rear View Mirror reduces eyestrain and driver fatigue
  • High-tech sensors and advanced circuitry recognizes and eliminates dangerous rear-approaching light
  • The K21 Auto-Dimming Rear View Mirror is equipped with a self-calibrating digital compass
  • Integrated remote exterior thermometer digitally reports outside temps and ice warnings
  • The K21 Auto-Dimming Rear View Mirror comes complete with detailed installation instructions and all mounting hardware
  • Installation of the mirror's electronic components requires some hard wiring (see Installation Guide tab for details)
  • Available with the optional Gentex Wire Cover for the most professional-looking installation that conceals loose wires (not necessary for all vehicles—see note below)
  • Your Gentex K21 Auto-dimming Rear View Mirror is backed by a 3-year / 36,000 mile warranty

Description

Headlight glare and your rear view mirror make a dangerous combination. Eliminate this volatile mixture with the Gentex K21 Auto-Dimming Rear View Mirror.

The K21 Auto-Dimming Rear View Mirror detects dangerous rear-approaching light and eliminates it with "intelligent" circuitry. What's more, less glare means less eyestrain and driver fatigue.

As if that weren't enough, the K21 Auto-Dimming Rear View Mirror comes with a self-calibrating digital display compass. The mirror even has an exterior thermometer that displays temps and ice warnings.

The windshield-mounted mirror comes complete with detailed installation instructions and all necessary hardware - perfect for the experienced do-it-yourselfer or professional installer with some wiring required. And, the Auto-Dimming Rear View Mirror comes with 3-year / 36, 000 mile warranty. See what a difference the K21 Auto-Dimming Rear View Mirror can make.

Notes

  • Installation of the mirror's electronic components requires some hard wiring (see Installation Guide tab for details)
  • The Gentex Wire Cover is highly recommended if there is 3" or more space between your mirror and the headliner. It conceals otherwise loose and visible wires running to the mirror. Select this part under "optional accessories" above.

Average Customer Rating

  (162)
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Excellent Product

Posted on 11/04/2009 by Michael G R. - 2002 Chevy Silverado (Chesapeake,VA)

Appearance
Ease of Installation
Price/Value
Quality

"I love my new mirror. My truck didn't come with this option, but I wanted it. I found it here at Auto Anything for a fair price, installation was about an hour, and it looks great."

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About Michael G R.
Vehicle
2002 Chevy Silverado
I use my vehicle for
commuting and work
 
Great mirror

Posted on 05/11/2007 by Mike B. - 2002 Chevy Silverado (Reno,NV)

"Love the mirror. I installed it on an 02 Chevy Silverado. It looks and functions great. Installation was fairly easy. Tools need were nothing out of the ordinary except a #15 torx bit small enough to fit into the plastic sun visor mounting brackets. Also, at least on the Chevy, the mirror takes a #15 torx. The mirror was a snap to remove and replace. My only minor complaint is the directions. This mirror can be used in many different vehicles, so the directions were somewhat generic."

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About Mike B.
Vehicle
2002 Chevy Silverado
I use my vehicle for
towing, camping, yard work
 
Gift - Receiver of gift loves!

Posted on 01/11/2007 by Stacy S. - 2000 Chevy Silverado (Anchorage,AK)

1 of 1 people found the following review helpful.

"I bought this for my Dad, he just installed it recently. He said it was super easy to install and everything works on it perfect. A lot of the other compass mirrors you have to recalibrate every time you restart the vehicle, but this one stays calibrated wonderfully! Auto Dimming works great, and the temperture shows in C and F, which a lot of the other aftermarket products did not do. I would recommend this product 100%"

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About Stacy S.
Vehicle
2000 Chevy Silverado
I use my vehicle for
Work and Play
 
Works like a Charm?

Posted on 12/27/2006 by Peter W. - 2009 Chevy Silverado (Millinocket ,ME )

"This works great here in Northern Maine.Allows me to be aware of Black Ice on Road blinking when the temp goes below freezing,showing Ice on Mirror Window.This is second Mirror I bought."

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About Peter W.
Vehicle
2009 Chevy Silverado
I use my vehicle for
All activities
 
Works Great !

Posted on 06/27/2006 by Brandon H. - 2002 Chevy Silverado (Wichita Falls,TX)

"The compass is a convenience and the temp is very accurate. It even adds a little class to my 02 silverado. Instructions were easily followed and expectations surpassed. It really works great!"

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About Brandon H.
Vehicle
2002 Chevy Silverado
I use my vehicle for
numerous commuting and travel activities.
 
We like it!

Posted on 12/28/2009 by Michael C. - 2006 Toyota Highlander (Dundee,OR)

Appearance
Ease of Installation
Price/Value
Quality

"I am really happy with this mirror. We replaced our Grand Cherokee with this Highlander, and the one thing we missed that Jeep had was a built-in compass/thermometer. This mirror was fairly easy to install (2 hours, taking my time), and was comparable to a stereo installation, I'd say. One time-saver was that the mirror fit right on to the Toyota's factory mirror bracket, so I didn't have to glue on a new one. I was glad that all the connectors and zip-ties were provided, and the instructions were very clear. It works really well too. The first night I tried it out, the temp went down to 31 degrees. As I started the car, it showed the word "ICE" as a warning and then returned to the temp. My wife thought the dimming was a bit too dark at night, but having it dim automatically is nice."

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About Michael C.
Vehicle
2006 Toyota Highlander
I use my vehicle for
Commuting, travel, family activities.
 
Delivered as promised

Posted on 10/19/2009 by Lowell S. - 2004 Toyota Highlander (Lebanon,OR)

5 of 5 people found the following review helpful.

Appearance
Ease of Installation
Price/Value
Quality

"The new mirror worked great and I was able to use existing wiring for the power lead, and only had to run the temperature probe wire. Our new car did not have the outside temperature option like our old car. My wife and I did not think we would miss it, but it turned out the temperature feature was our most missed feature. The temperature reading is very accurate and my wife is now a a happy woman."

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About Lowell S.
Vehicle
2004 Toyota Highlander
I use my vehicle for
commuting and family activities
 
great feature

Posted on 09/09/2009 by Ruth M. - 2008 Ford F-250 (Palatine,IL)

4 of 5 people found the following review helpful.

Appearance
Ease of Installation
Price/Value
Quality

"It's a great feature to have in your vehicle. The unit should come with the optional wire cover. It really should be part of the unit. I would appreciate one at no cost."

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About Ruth M.
Vehicle
2008 Ford F-250
I use my vehicle for
Work and pleasure
 
Awesome mirror

Posted on 07/31/2009 by Donald L. (Denver,CO)

5 of 5 people found the following review helpful.

Appearance
Ease of Installation
Price/Value
Quality

"I purchased this mirror for my 2006 Tocoma and I am really happy with it. The installation was easy and the mirror works perfectly. I would recommend this mirror to anyone."

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About Donald L.
 
Greaat product

Posted on 05/07/2009 by Scott M. - 1991 Ford Explorer (Boring,OR)

4 of 4 people found the following review helpful.

Appearance
Ease of Installation
Price/Value
Quality

"very easy to install, I put one in my Escape first, and had to have one in the Explorer also."

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About Scott M.
Vehicle
1991 Ford Explorer
I use my vehicle for
commuting, hunting, travel, etc.