Hi all, I am bringing this back up. I am a relatively new member on here but had been following the site for a while. I am a long time GM guy so this is a great site.
I just purchased a 2017 Sierra Denali. It had steps but I quickly realized they had been retrofitted. When I got it it did not have the inside switch, following this post I traced the wiring back and determined somebody (probably from here) had followed these steps and had the power wire plus the other two correctly in place at the front. The steps came out when the door opened and retracted when closed but they would not go back the the rear setting. I purchased the inside switch hoping that would solve my issue. With the switch I can push it down and extend, push again and they will go all the way back. I can hold it down to turn it off and on but still not "kick" button tri mode on either side. I have tried turning them on and off and cycling them to no avail.
I believe I have confirmed the button is hooked up but sure cant get it to work. Any ideas?
Thanks
Dave