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Questions about the Duramax LMM

Discussion in 'Chevy Trucks' started by PlowMan03, Nov 7, 2012.

  1. PlowMan03

    PlowMan03 Senior Member
    from Maine
    Messages: 472

    I have a friend that is looking at an 08 Chevy ec/sb duramax lmm. He asked me if I knew what they got for fuel mileage stock. I know there are a few guys on here that might have the answer to this question. He will be working the truck such as hauling a trailor, he said it doesn't have the plow prep package and asked if it was possible to put a plow on it. Is there anything else he should watch for if he buys this truck? I did do some searching but didn't come up with a good enough answer for him so I figured I would post this here.
     
  2. SullivanSeptic

    SullivanSeptic PlowSite Veteran
    Messages: 3,422

    Fuel mileage will vary depending on the load he is hauling. I have a tuner and exhaust so mine is a bit better. 13-16 city and 17-19 highway. I have larger tires tho too. As far as a plow, yeah he can put one on. I have the same truck as him and I had a Western 8'6" MVP on it. Now I have a wideout. It handles it just fine. No need to do anything to it except crank the Tbars a bit.
     
  3. PlowMan03

    PlowMan03 Senior Member
    from Maine
    Messages: 472

    Thanks Sullivan. He said it has 245s on it now and he said he wants to put 265s on if he buys it. What size are you running if you don't mind me asking, also what do you have for exhaust and tuner?
     
  4. SullivanSeptic

    SullivanSeptic PlowSite Veteran
    Messages: 3,422

    I run two different tire and wheel combos. I have stock 16 wheels with 265's for winter. Then in summer I run 17" H2 rims with 285/70/17 Bfg mud terrains.

    For a tuner I have an Edge Evo Race edition and a 4" MBRP turbo back stainless exhaust.
     
  5. PlowMan03

    PlowMan03 Senior Member
    from Maine
    Messages: 472

    Nice. Thanks for the info Sullivan. Sorry for all the questions as well.
     
  6. SullivanSeptic

    SullivanSeptic PlowSite Veteran
    Messages: 3,422

    Hey, no problem. That's what sites like these are for.
     
  7. PlowMan03

    PlowMan03 Senior Member
    from Maine
    Messages: 472

    Ain't that the truth. All you guys here are great to deal with.
     
  8. plowguy43

    plowguy43 PlowSite Fanatic
    Messages: 5,269

    umm Pics Please !!! :)
     
  9. SullivanSeptic

    SullivanSeptic PlowSite Veteran
    Messages: 3,422

    Ive posted them all over this site. I'll get some more with my wideout and new salt dogg shpe2000 vbox.
     
  10. SullivanSeptic

    SullivanSeptic PlowSite Veteran
    Messages: 3,422

    What u want pics of? Hopefully not the exhaust. Its filthy from a badly leaking transfer case spitting fluid on it for the last year. But at least my truck has a nice undercoating on it now. Lol
     
  11. plowguy43

    plowguy43 PlowSite Fanatic
    Messages: 5,269

    Mine has the same issue but is an older dodge.

    Id like to see it in summer trim if possible, love those late model GMs
     
  12. SullivanSeptic

    SullivanSeptic PlowSite Veteran
    Messages: 3,422

    First one is a while ago. I still had decals, mouldings and badges. They are all off now. Second is from about a month ago. In true summer mode.

    Duramax Summer.jpg

    618.jpg
     
  13. 09Daxman

    09Daxman Senior Member
    Messages: 253

    I have a 09 on stock 17s and towing my 24 ft enclosed trailer with my 87 rx7 in it going about 75ish I got 13.2 mpg. Empty going to Chicago i got 20.3 going there And coming back to mn I got 20.7. I have EFI live with a dsp5 tuned by nick At duramaxtuner dot com with a black mbrp turbo back exhaust. Pretty soon I'm going to be doing an egr delete, converter, And a trans tune. For the plow, well today I just hung a 8 foot fisher HD on it. Doesn't even drop an inch at full lift, all I have done to it is a rough country level lift on stock 265/70/17.
     
  14. PlowMan03

    PlowMan03 Senior Member
    from Maine
    Messages: 472

    Sounds like if he buys the truck he should do an exhaust system and a tuner or would he be better to keep it as is.
     
  15. plowguy43

    plowguy43 PlowSite Fanatic
    Messages: 5,269

    Awesome looking truck Sullivan! The center caps completely change those hummer rims.

    Plowman03- any diesel needs the EGR system removed to be reliable and get better mileage. The Diesel engine was never designed to reburn soot.
     
  16. SullivanSeptic

    SullivanSeptic PlowSite Veteran
    Messages: 3,422

    Thanks. I work the crap out of it. This truck has paid for itself two times over already. And only 108,000 miles on it.
     
  17. PlowMan03

    PlowMan03 Senior Member
    from Maine
    Messages: 472

    Thanks, when I talk to him I will let him know what he can do to get better mileage out of that truck.
     
  18. lawn king

    lawn king PlowSite.com Addict
    Messages: 1,070

    My 08 3500 just turned 100,000. Its stock, i get 15 around town, 19 highway!