DirtyMax88
Well-known member
2015 Duramax excessive fuel consumption
Good Morning everyone. We have a '15 GMC 3500 Duramax. I had a full tank when I left the house and started driving to work, I get about halfway here and realize I am down to less then 3/4 of a tank. The truck burned somewhere around 8-10 gallons of fuel in about 20 miles. I stopped/pulled over to look under the hood and under the truck. It doesn't look like it's leaking any where. I flipped the switch on my aux tank and filled the truck back up. Gauge reads full. I get to my office and it's already down to 3/4 of a tank. Again, it doesn't look like it's leaking out anywhere. You can literally watch the gauge move. This seems crazy. Do I have some sort of Regen problem, that it's burning that much fuel in such a short time? Been looking around on other forums/google and cant seem to find my exact problem. Anyone have this problem or have an explanation. Thank you....
Good Morning everyone. We have a '15 GMC 3500 Duramax. I had a full tank when I left the house and started driving to work, I get about halfway here and realize I am down to less then 3/4 of a tank. The truck burned somewhere around 8-10 gallons of fuel in about 20 miles. I stopped/pulled over to look under the hood and under the truck. It doesn't look like it's leaking any where. I flipped the switch on my aux tank and filled the truck back up. Gauge reads full. I get to my office and it's already down to 3/4 of a tank. Again, it doesn't look like it's leaking out anywhere. You can literally watch the gauge move. This seems crazy. Do I have some sort of Regen problem, that it's burning that much fuel in such a short time? Been looking around on other forums/google and cant seem to find my exact problem. Anyone have this problem or have an explanation. Thank you....