Anyone having any issues with 2016 or any lml leaking oil? Noticed few spots on driveway and looked underneath to find oil leak. Residue as far up as the starter on pass side and all across bottom of bellhousing. Don't know if leaky pan or rear main possibly? Just traded 03 with 250k with not a single leak for new one that already leaks oil with only 7500. Any simular issues?
We are sorry to hear about your 2016 Duramax oil leak concern. Please send us a private message if you have any questions. We’re more than happy to provide an extra layer of assistance.
We are sorry to hear about your 2016 Duramax oil leak concern. Please send us a private message if you have any questions. We?re more than happy to provide an extra layer of assistance.
If they have to separate the tranny from the motor is there any extended warranty GM will give me? As a off road diesel mech, I know stuff never works right after its been torn apart. Pretty disappointed that I spent 63k on a brand new truck that I make a living with and can't even go to work because I have nothing to pull with now.
Just took it to the dealership. When showing them notice it is leaking so bad now that oil has slung all the way to the rear-end. B.S. for a brand new truck.
Yip, looks like the usual oil leak to me. I had the same issue on my 2011. There are many threads on this same topic.
It looks like to me they don't want to hold up production to allow the sealant to properly cure. If it leaks then it become a dealer issue. They probably figure the few that would possibly leak isn't worth holding up production and costing money. That's my opinion.
Maybe we should rag on GM about their piss poor pan design that leaves oil in the pan when it is changed too. If an aftermarket company can develop a flat bottom pan then why the hell can't they do it right. Jerk off engineers!
Same place on my 16. Took mine in and dealer had the gall to tell me it was not leaking. I went home thoroughly cleaned the area and it was damp a few days later. I have 3800 miles on it as of right now. I first noticed mine at 3100 miles when I was changing the oil for the first time. I think it is the oil galley plug leaking and not the actual oil pan joining. I don't expect my dealer to anything about it. I will give them one more shot then I am calling GM about it.
I just went through a oil leaking Toyota Tundra for the past 6 months and the whole top of the engine was taken apart to fix it. After that it had many other issues start to happen. Toyota has seen my last dollar due to the way it was all handled or shall I say mishandled.
When Toyota completely disassembled my Tundras 5.7 engine it went back together pretty good as I could tell. Took the guys 11 days to complete. Toyota put me in another tundra rental. Only problem was a week after I got it back the AC compressor blew up requiring another 2 days. Then 3 weeks after that the truck started leaking oil out of drilled stud hole on the upper oil pan. They stopped that with a $3 tube of loctite on the threaded stud. I was not a happy camper by now. I spent hours on the phone with Toyota reps all the way up the like to the top in California.
Toyota extended the trucks warranty with the platinum level zero deductible 8 years 100k miles. Only problem was the trucks flex fueling issue resurfaced and it wouldn't crank very good after sitting a while. I took it back several times for this and Toyota never could get it to do it. They even goes a tech guy in from California and of course they said it cranked fine. My last correspondence with Toyota was the day before I bought the Gmc. They basically blew me off and all but accused me of lying about the cranking issue. The Toyota is gone and after 16 years of buying them and never having a problem that last truck was a piece of junk and they knew it.
I honestly think every manufacturer has issues its how they handle it is what makes the difference. Toyota failed me miserably.
We can certainly understand your feelings of frustration and sincerely apologize for any inconvenience caused to you by this matter. Please send us a private message with your VIN, full contact info and preferred dealership and we'd be happy to explore all available options on your behalf.
Got the truck back from dealer today. Said factory didn't put hardly any gasket sealer on the oil pan. 63k truck and they can't spare a couple extra squarts of RTV. But they did a jam up job on the repair. Looks like they really cared...check out the RTV smeared all over the pan. Looks great for resale value.
I just went and took a look under my 2015 2500HD and found the same leak. It is not near as bad as the pictures in this thread, but none the less it is still seeping from between the engine block and the bell housing right by the starter. just enough oil to make a wet looking spot on the seam and pool small amount on the top of the lower oil pan. Not to impressed. Going into the dealer on Tuesday and seeing what they say.
Mine had the same thing and I fixed it at 15k or so. My dealer was very proactive in handling it, advised leaving the truck overnight so the new seal would properly cure before refilling. Ended up being a free oil change for me, they added the new filter too without complaint.
My son noticed that we were leaving a few drops in his driveway. I crawled under my 2015 2500 HD Denali and saw the same thing others have seen. Oil leaking around the bolts on the oil pan...I checked the tightness on a couple I could get to easily and I could tighten them at least a 1/2 turn...so bolts are not that tight. I wiped some of the oil up and will check it in a couple of days and take it to the dealer when we get back home in a couple of weeks.....ugh!!
Good morning rreynolds51,
I apologize for the leaking concern you are experiencing in your Denali, but am happy to see that you plan on visiting your dealer soon. I realize you are currently away from home, but please feel free to private message me if you need any assistance when you return home or if you need me to locate a dealership nearby.
Julianne M.
GM Customer Care
Well an update to my oil leak. I have not been able to get a dealer to even look at mine. Selling dealer is a bunch of bozo's won't go back there. Took it to a Chevrolet Dealership that GM recommended and they didn't even take the time to look at it told me to come back later when they were less busy. Needless to say I didn't go back. Contacted another GMC dealer further across town and I have a scheduled appointment date of Sept 6th to leave the truck and leave in a loaner then go from there. The leak has not got any worse. It is located in the same spot and drips a drop on garage floor every now and then. Truck has 11,600+ miles on it now.
Really disappointed in the dealer response to this to date. It is almost like as soon as they discover it is a diesel they want to run from it.
Just dropped mine off for the same thing dealer told me it was a warped oil pan. They ordered a new pan and have had my truck for 3 days now. We shall see what happens..
I am sad to report that GM is still shipping Duramax engines with leaks in the rear of the engine. Rear Of Engine Oil Leak ? 2015 Chevrolet & GMC 6.6L Duramax Diesel | gm.oemdtc.com
After purchasing a new 2007 classic and driving it for almost 10 years, I purchased a new 2016 LTZ. At 600 miles I noticed oil spots on my driveway, so I crawl under the truck to find drops of oil at the engine/bellhousing union. omG! I figured there would be some info about it on this forum so I came to take a look, and sure enough I see this has been going on for a few years HmmMMmm. Are you kidding me? This should be a major embarrassment for GM (it is for me) to be sending out vehicles like this. I can't amagine even trying to sell a used vehicle in this condition.
So now my new LTZ is sitting at the dealer waiting to have the whole drivetrain R&R'd to replace 3 little plugs that GM has known are potential leakers for several years?? What a bunch of crap!
I guess this has turned into a rant, sorry, I get a little upset when I think about it:frown2:. Where can I send a note to GM, they need to listen to a good rant!! lol
I had oil leak on my 2015 LML. Dealer replace lower and upper pan gasket. Replaced the gally plugs and main seal. Took multiple visits to dealer to get repaired. Two months after repair, leak came back. I dont want to have them fix it again, because last time they fixed it they broke the oil cooler (ended up with oil in coolant) and damaged some of the transmission lines. Transmission doesnt shift like it use to. I use my exhaust brake when pulling 12.3 trailer and suspect leak may be caused by use of the exhaust brake - of course Im only guessing. Dealer not motivated to find root cause.
Update: Mine was finally put in the local GMC dealership Sept. 6th. They kept it all day, went ahead and changed the oil and filter and added the leak detection dye to it and we are going from there later on Sept. 26th. They did see the large amount of oil at the bell housing area under the starter side. They want to be sure of where it is coming from so that is the reason for adding the dye. I did not argue with their method as I need to use the truck to tow the weekend of the 24th anyway.
They put me in a nice 2016 GMC Z-71 loaner for the day and probably will be back in it when they reinspect the truck on the 26th. I honestly do not think my leak is the oil pan because from where i have been under there looking it is completely dry along the pan. He said if is wasn't the pan then it will have to have the transmission dropped to inspect behind the bell housing at rear main seal and galley plug locations. Sucks since my truck only has 13k miles on it and was first noticed leaking there at 3k miles. Basically first time I changed the oil is when I noticed the oil build up at bottom of bell housing.
Nice loaner for the day, very easy to park and drive in the city unlike my HD. Now if they could just clean up the spilt coffee in them before loaning them out. Cannot believe people would be so nasty in a $55k vehicle.
My 2016 Duramax 2500HD Sport Edition has been leaking since 2400 miles. Has been back nine times in 11K miles since new for all kinds of issues i have never had with a vehicle before. One of the reasons today is the Oil Leak on my nice new concrete driveway. Air bag recall and other stuff they are still trying to fix. Will give update on oil leak when i get informed by GM. New truck should not leak! They said drain plug and oil filter were good.
Update: Dealer said upper oil pan is leaking. I asked if rear main had any sign's of leakage and he said tech was going to do "dye pac test" Cant start on repairs for 2-3 day's dealer stated. How long is this job?
My 16 just rolled over 1k miles. Guess I'll keep my eyes peeled. Oil leaks ruin my day but haven't seen anything yet. Already tired of the DPF regens though...
Sub'd.
My truck has a little something leaking but it doesn't seem like oil. It's very sticky and is right where everyone else's is leaking. I read on a Cummins forum that they use an assembly lube when putting the tranny and engine together and the lube weeps out eventually. I wonder if some of us are having the same issue?
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