Trailer running lights question
I have a 2012 Silverado crew cab with the HD towing package and cooler and the 3.42 gears, I had connected my fathers trailer after re-wiring it for him, and every light worked except for the running lights when the headlamps were on.
However when I connected the trailer to my sisters truck which is an older model like a 2002 ext cab, it worked just fine.
Question here is, do I have to have a special type of hitch connected so the truck knows that it's about to tow in order to engage the running lights for the trailer connection in the rear or do I need to take it to the dealer so they can have a look to see if it was even installed correctly from the factory?
Please respond asap, I haven't pulled a trailer yet and this was supposed to be the first time...so I have never messed with the truck for towing until now.