I Bought this car used, and I have had problems with all the mirrors... The Rear view mirror dims for night driving when I start up, The outside mirrors tilt down for curb view when backing up... Tried stowing the settings for Driver 1 and 2, (also tried disconnecting the Battery terminal and re-stowing driver preferences). Only the mirrors won't stay programmed, the seat and everything else is OK. Is there a fuse or possible bad component involved with this memory stowage?
That is some vehicle coming with diming rear view mirror n also side view mirror. pls check your vehicle specification.
SOURCE: 03 yukon driver side mirror, rearview going day to night any time
you either have a loose connection to or a failing daylight sensor, get it replaced
Unfortunately, you have come across a common problem on these vehicle when the battery power is interrupted. One of your Temperature Control Actuators (or its associated door) has failed. Attached is a diagram of the HVAC unit and the location of the actuators 9With part numbers). Some of these actuators are difficult to get to without disassembling the dash. The Driver's side actuator can be accessed from under the dash.
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The 2002 GMC manual calls this mirror an "Electrochromic Day/Night Rearview Mirror", The manual only shows how to turn it Off and On
But the manual doesn't explain why the dimming feature comes on at startup (even in bright sunshine) and has to be turned off every time...
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