Mike Stuart

Hi. Can't find an answer to my small but vexing problem. 2018 High Country 3500 Duramax. Each time I turn on the key the power mirrors self adjust off where I had them to an unuseable setting, requiring me to reset the outside mirrors every time I drive the truck. I have tried all the instructions in the manual for personalisation etc but the mirrors won't stop their crazy behavior. Is there a way to make them stay put? Thanks.