2001 GMC C3 User Comment / Complaint

Auto dimming mirror ( on a 2001 gmc sierra c-3 pickup is malfunctioning) took to dealership on aug 21 to have mirror and a/c worked on. auto dimming feature is malfunctioning and at night causes you to see 3 images when there is only one actual. for city driving especially, this causes a safety problem, can't tell what lane other vehicles are in behind you. during the daylight hours, a purple haze outline is around all mirror images and depending on angle looked at, sometimes duplicate images. daylight hours are not really a safety problem, but night time driving is a major safety issue in my opinion. dealer said they could not work on and stated doc. # 1841960 from gm stating that this is normal on auto dimming mirrors and that no repairs were to be made on said condition. my driver side mirror is only one with malfunction. called the customer assistance #'s with gm and even offered to purchase new mirror at my cost. ca said they would check with their field rep's and call me back in 48 hours. as of now, 9 days, later, have called twice more and still have no callback or further information.