WiscoZ71

Hello all, I never really found out what was going on with the truck. It never seemed down on power, or felt like it had ever stumbled under load. I chalk it up to a bad batch (or two) of gasoline I picked up during my travels, but I'm not totally sure.

It's always gotten decent fuel mileage unloaded. Hell, I was able to make it from where I live in Wisconsin down to Louisville, KY on a single tank of fuel... all while hitting stop and go traffic in Chicago and Indianapolis. I try to use quality gasoline when I fill up (Top Tier)... maybe got a bad tank of gas sometime in the past.

3 of the plugs came out of the driver's side bank (CYL 1,3,5) and the last came out of the passenger side bank (CYL 6). I don't run the truck particularly hard. It's a tow pig in the summer time for my boat, but that's only a couple times a month... and it's only about 5,000 pounds fully loaded so I'd hardly say the truck is being worked hard. I forgot to mention in my original post that the truck is completely stock, minus a muffler change. I have a buddy who is a tech for a local GM dealer, I may have him take a look at things sometime soon.

The 6.0's don't get great mileage as it is, add in the 35's, lift, weight, and camper shell it's bound to go down... way down I would imagine. 8 mpg sounds about right to me considering the mods. If you know someone or somewhere to do a custom tune you might be able to gain some of that back along with a little extra power.

These are the OE Delco 41-110 plugs that were in the truck since new, and as far as I know they are Iridium plugs. I was just a little shocked to see something like that with low miles.

Hey guys. Out of curiosity the other day, I replaced the plugs on my 2015 6.0. It seemed like the truck would slightly misfire on a cold start for a few seconds and then clear up, hence my curiosity. Truck has 47,300 miles on it at the moment. I found that 4 out of the 8 plugs i pulled had the electrodes burned off. Any reasons you can think of why this would happen? I live in Wisconsin and it does sit outside in the winter time without a block heater, so the only thing i can think of is excessive idle time. Thanks for the help!

Hey guys. 2015 4x4 6.0 with about 29k miles. I've noticed that when I take my foot off the accelerator there is a slight clunk coming from what sounds like the transmission. Usually happens about 40 mph and under. I've gone to the dealer I bought the truck from, and they've basically washed their hands of it. I took a tech along for a ride, as well as a service advisor and both heard the noise, and have told me "they wouldn't know where to start with diagnosis". On an sort of unrelated note... when do factory warranties begin? I was under the impression that they begin on the date of purchase. This service advisor tried telling me that my factory warranty was expired. I bought the truck in September of 2016. Any input from you guys would be appreciated, I feel like I'm wasting my time at this point trying to chase it down.

There are a couple soundclips I found on YouTube of someone who had one installed on a 2014 2500 single cab. Has videos of both inside and outside the cab. Can't seem to find them right now.

Here's my truck! I've had it almost a year now. I couldn't be happier! Only mod so far is changing the trash can muffler out for an Aero Turbine 3535XL. Plenty more things I want to do though!

I swapped out the stock trash can with an Aero Turbine 3535XL muffler. I kept all the stock piping, even the tail section. It's a resonated muffler so I have zero drone on the freeway around 70-75. Probably one of the best sounding exhausts I've heard on a 6.0.