Hey guys, first time posting here. I bought a 2016 Chevy Duramax the other day. While looking at the truck I noticed an HDMI Cable and what appears to be a 12v power supply almost like a laptop charger coming from the fuse panel. Is this for a tuner? If so, what is the best way to figure out...
I have a 2009 LMM with 135k on it. Its been deleted and tuned with H&S Mini maxx. Its been deleted since November of 2018. The EGR cooler is off. Ive been having issues with losing coolant since May.
I've had it taken to a shop twice and they pressured it up and couldn't find a leak. I had...