I am looking at doing the exact same thing with a 2016 Sierra 2500HD.
whenever I get close to finding the correct part number for the positive cable, the plug that energizes the relay is NOT the same:(.
I have included pictures of the plug from my vehicle for reference.
does ANYONE have a 2016 with this option factory installed? if so, can you please share the last 8 digits of your VIN so I can track down the correct factory harness.
OR
share the partnumber (the ones listed here and the ones I have been able to find do not match the plug in my vehicle.
Unfortunately, 3 dealers have been of little help:(
Thank in advance
d
