Looking at a 2015 Sierra 2500 Denali. It has the large side mirrors with the chrome caps, orange front facing lenses, the small clear lights that shine rearwards, power mirrors but not power folding.
The only time I can get the orange front facing lights to do anything is when I lock or unlock the doors.....they flash and will time out in the 30 seconds that is set in the DIC. I can not get the clear lights to light up at all when in reverse???...Dealer told me it has to be dark out. I parked in my dark garage and still nothing.
When should the orange front markers illuminate? What is the function for them.
Am I doing something wrong to get the clear backup ones to light up.....
Maybe there is an issue with them that needs fixed.