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I bet this will be an easy one for someone to answer. I have a 2000 Yukon. First off I don't have a owners manual, so I have no idea what "CAL" means on my mirror. And the direction is not correct. I assume "CAL" means calibration, but I could be wrong. Then I tried holding the "comp" button down for a few seconds, then the letter "Z" appears and a random number. I then found the number will count up every time I press the "comp" button again up till "15"....:think:


Anyone known how to calibrate this?

Thanks
TJ
 
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