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lmm duramax

  1. 07.5-10 LMM Duramax Powertrain
    What to see if anyone can help. Transmission fluid is grey. Still has some red in it. I'm having problems with torque converter I can see and verified with scanner when it gets warm torque converter stops working. Doesn't lock up Also Temps seems hot. When towing I see 210/230 normally Is that...
  2. 911 Problems Forum
    Overheating while towing. Should say doesn't over heat with no weight. I could be wrong but seems like engine over heats then transmission with it. Full synthetic oil and transmission change 10k miles ago. Temps are 250 degrees Now how this started was by big o tire and mechanic shop. I brought...
  3. 2007.5 + (GMT 900) Non Powertrain New Body Style
    I’m selling my LB7 and buying an LMM I’m just curious if there is anything I should know about before I buy one! Also would a FASS 165 be okay with just a straight pipe, efi live, and intake for the time being? Later down when I’d be doing an egr delete, bigger turbo etc just my thoughts I’m not...
  4. 07.5-10 LMM Duramax Powertrain
    Long story short. Truck has gobs of power unloaded and during take off. But when towing once she shifts up and gets past 2k she runs out of gas. Like she's starving for fuel. I have pedal pegged to floor and only at 2k rpms. Also smells rich buy sounds like it's running lean hear pinging like...
  5. 911 Problems Forum
    I went out to start the truck today and no start no crank power locks no longer works remote start doesn’t work dash lights come on but security light stays on after all other go off and says service 4wd service trailer brake system service air bag just service everything both batteries are in...
  6. General Discussion
    So I’ve got efi live for my 09 lmm and I want to use it. It’s got a delete tune so I can rid my dpf. I’d like to complete delete my egr with a new up pipe and intake tube. My question is can I run with the egr unplugged until I can afford to get the egr delete stuff I mentioned prior and not...
  7. 2007.5 + (GMT 900) Non Powertrain New Body Style
    Like the post says I’m new to diesel pickups, got my CDL 2 years ago and started driving semis, got bitten by the bug and now I’m looking to get my first diesel for daily driving/light towing purposes, and a little fun now and then. I’ve been looking at a 2010 LMM Duramax w/ 164k miles, stock as...
  8. General Discussion
    New truck to me. Every 400 miles I go through the regen process but the white smoke is only visible when I'm stopped in traffic and seems to be coming from under the passenger floor area somewhere (presumably from the dpf). This only occurs when I'm in regen, other than that no smoke ever from...
  9. 07.5-10 LMM Duramax Powertrain
    A couple weeks ago I went to take off in my 2009 lmm and realized I had no forward gears and it shifted very hard into reverse so I thought it was a tcm sure enough after getting a new one it shifts smoothly into reverse and backs up fine but still has no forward gears when I put it into drive...
  10. Aftermarket Mods.
    So I’m new to the diesel mechanics I’m no Mechanic myself but as far as bolt up parts go I’m pretty confident I don’t want a race truck just Some more power and for it to souls good I have a stock 09 lmm that just hit 100k truck is very sound and well maintained when it comes to power with our...
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