Originally Posted by lazor-cut
Sorry for the delayed response but its in a 2011 GMC 2500 HD
I have the same truck. I reading on the GM Upfitter site something about a diode has to be installed if you install an something that has draws high amps. It said something about the power surge could damage the trucks electronics. I will post the link if I can find it. If this was the case I would thing guys with plows would be having the same problem thou. I was thinking about putting a insert on my truck in the spring so keep us up dated.