Review on MUCO Extendable 2014 2017 Silverado HD Manual by Matthew Owens

Bought these mirrors because Revain said they fit my 2500HD Denali Edition Diesel. They were delivered quickly and look good. Watched YouTube video on installation, both installed in about 2 hours. tested movable windows with a switch together with lighting. but they will NOT fold onto a Denali truck. Then the truck drove down the road for about 30 minutes and checked the engine light - ambient air temperature sensor P0073 was the code. Did a quick search and someone had the same problem changing mirrors for towing. Now I don't know what to do. They work, BUT with effort.