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  • Name
  • Location
    Bettendorf, IA
  • Drives
    2015 GMC Sierra 2500 Duramax

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RangerU's Achievements


Enthusiast (2/11)



  1. I don't think you're going to be able to improve much on MPG. A 6" lift and larger tires add more drag, and the 3.73 gears aren't helping. But to be honest, to change the rear to 3.42, lower the truck closer to factory, and put smaller tires, would cost more than you would save in gas money. I had an 01 1500 with the 6.0, and the gas mileage was decent around 55-60 mph, but really went down over 70.
  2. It depends. Is the truck stock height, leveled, or lifted? I have a 2-1/2" level with 295/55/20 tires, and they were close on the factory wheels. They rubbed on my Kryptonite UCAs so I "HAD" to get new wheels.
  3. To see real HP/TQ gains from a motor, you will need to increase the engine's ability to breath. AKA: Long tube headers and exhaust, heads and cam. Once you have those, changing intake manifolds would be beneficial.
  4. At least it was a simple fix. That could have really sucked. I would be using a different shop as well, that should have been one of the first things they checked.
  5. I used the RP in my previous truck, and it worked great.
  6. So I just called Scoggin Dickey and was told the pre-painted are discontinued. So I would have to order the pieces and have them painted. Anyone have other ideas?
  7. Anyone know where I can get black door molding for my 2015 Sierra 2500 crew cab? I tried to order GM 23233850 but was told the parts are discontinued. This seems bizarre since the part is for trucks up to 2019.
  8. Great dad moment. I had my son, 8, help me flush the power steering fluid. He said he loved it and wants to help next time I work on the truck.
  9. Been here a while, but am introducing myself. I'm a dude, with a 2015 Sierra 2500. I'm in the process of learning about diesel engines, but am very familiar with gas engines. I have a 2001 Camaro SS that I have replaced the motor with a LS2, and completely rebuilt it myself, twice. I like the smell of exhaust, racing, long walks on the beach, and books by the fire.
  10. I think his point is there is very little gain from going from stock manifolds to shorty headers. You gain significantly more power by installing long tube headers.
  11. I have Cooper STT Pros on my 2500, and they performed great in the winter. Overall I am very happy with the tires. I was thought they would be louder on the road, due to how aggressive they are, but are not nearly as loud a mud tires.
  12. I installed Kryptonite on my 2015 2500, couldn't be happier.
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