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1-20 of 110 Results
  1. 911 Problems Forum
    Hi all Have a 2016 LML will not start. Drove fine and shut it off and now will not crank. Just hear a click. Some background: Truck is stock with 140000kms. Had a slow crank/start issue for the last little while which I knew was a bad battery. Tired to boost it and still wont crank. Replaced...
  2. 11-16 LML Duramax Powertrain
    Hi guys. My lml has been making this sound for about a year now. It doesn’t do it everytime I drive it, but when it does it’s after the truck is warmed up. Runs and drives perfectly. No one can seem to figure it out was just wondering if anyone has heard this before. Coming from right behind the...
  3. 2011-2016 (Non Powertrain)
    Hi guys. My duramax has been doing this for about a year and no one can figure it out. Runs and drives great. Daily driven, even under full throttle. Does it about half the time. Noise disappears as I drive. Has anyone heard this sound? Sounds like it’s coming from right behind the gmc emblem...
  4. 11-16 LML Duramax Powertrain
    My 2013 2500HD CC, LML was towing 13,000 lb 5th wheel up Towne Pass in Death Valley (10-mile grade @ 7-10% approx) air temp in the '50s, RPM 2500 all gauges normal then 3/4 the way up threw a P2263 code, "turbocharger system performance". No cell service and after idling for 10 min then shutting...
  5. General Discussion
    I have a 2011 lml that I’m needing some advice on. Every time I drive it I get a low coolant light as soon as it reaches operating temp. I had an issue with a stuck open thermostat so I replaced them about 6 months ago and shortly after would get low coolant light every once in a while but now...
  6. 11-16 LML Duramax Powertrain
    Hello, so I have a 2011 LML with CP3, exhaust and intake as well as Fass 165. I originally live to New Hampshire and have since moved to Montana. On the drive out here towing my trailer I stopped to sleep for a few hours in eastern MT and woke up a few hours later. When I got back on the road I...
  7. General Discussion
    I'm new to this site so please bare with me. I bought a 2013 lml going on 2 years ago. Drove fine for several months, now it's wandering literally all over the road. This has been going on for at least a year now. I've checked the front end as well as 2 or 3 shops. Carried it to dealership, they...
  8. General Discussion
    2014 gmc denali LML. So I had a bad ground which was causing the truck to glitch out. Fixed it, and now my 4 wheel drive Knob isn't lit up and won't engage, service 4 wheel drive and traction control light is on. Truck runs and drives great. Any ideas?
  9. Towing & Hauling
    Anyone on here have a full air ride setup on their trucks? Been thinking about doing it for 1. Looks cool as hell 2.would increase towing a good amount Don’t know where to start looking for the right bags I’m planning on doing this my self. I know I’ll probably need and f250 front axle unless...
  10. General Discussion
    My 2011 LML is spraying out coolant from the over flow. Getting a low coolant light on dash. My upper hose feels completely empty. No pressure and cool to touch after driving. Put in new tstats about a week ago. At times my coolant temp will go down to 160 while driving and I lose heat from the...
  11. General Discussion
    Hey guys new here to the forum although I’ve used it 100’s of times. I have a 2016 lml tuned and deleted 5in turbo back with egr blocker plates. I’m running the s&b intake and want to know how much air I need. It comes with a secondary inlet that has the option to block it off in the bottom of...
  12. Introductions
    Hey guys, My name is Mychal and I’m from AB Canada. I’m not new to the diesel/duramax life but I am new to the forum. Currently have a 2009 CCSB 2500 LTZ, and my last truck was a ‘13 f150 and before that an ‘08 6.4 power stroke. Also have a 2001 ford lightning sitting in the garage that I’ve...
  13. General Discussion
    So my lml engine has blowby and I have a good lmm spare engine with no use for it. My question is can I take the heads off my lml and bolt them to the lmm shortblock? I know the injectors are different, so using the lml heads would allow me to keep the lml injectors then I wouldn’t have to deal...
  14. General Discussion
    I’m “almost” at a loss. truck info : 2011 Sierra Denali 2500 edge tuned and dpf deleted. location : MN Snowy and cold Replaced: transmission filters, NSBU switch all the stories short: Hooked up boss v plow. Plowed twice. Second time out, went in to limp mode sporadically. Pulled codes p0700...
  15. 11-16 LML Duramax Powertrain
    Hey there! I work at a shop in Southern Florida and we have a mind boggler, was curious if anyone here has had any similar issues. 2016 LML Silverado 2500 Running rough, choppy, shuts off. Truck was brought in for issues stated above as well as some suspension component's. First issue at hand...
  16. 11-16 LML Performance Parts Discussion
    2015.5 lml, just added a WC fab cp3 conversion, airdog 165, wc fab highflow bundle, and a ryans diesel 64mm turbo with tuning. When on the gas pedal lightly and when the truck builds 5psi it will start to smoke blue from the tailpipe, at 7psi there is no smoke. If i get on the gas and take it up...
  17. 11-16 LML Duramax Powertrain
    Hi everyone, I'm curious to see if anyone has any good tips or tricks to pressurize the fuel system on my lml. It has to have a leak somewhere in the fuel system as it won't hold a prime. I have tried re-sealing the filter original filter head. Replaced the filter head. Switched from oem filters...
  18. EFI Live
    I have a 2012 LML I just purchased a truck used it has a five position under the dash with yellow and black wires running right to the ECU not too sure what tunes are on it or whoever made the tune is there a way I can figure this out
  19. General Discussion
    Trying to find out if anybody can help, i have a 2014 lml duramax that started to misfire and run rough. Replaced injectors but was still recieving an engine code for cylinder 1 misfire. Replaced the injector pigtail harness because i read that sometimes they can go out do to a sharp bend or a...
  20. 11-16 LML Duramax Powertrain
    I have bad coolant leak wich I think is internal. I get lots of white smoke out of exhaust but it occurs only time to time. Add coolant light comes on about every 200 miles. I really dont think its cylinder head related because i get normal pressure in top radiator hose in every situation and...
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