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Duramax Fifth Generation: 2011-2016 (LML) Discuss the fifth generation (2011-2016) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 02-26-2018, 11:21 PM   #1 (permalink)
diesel dog
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Head gasket leak - common LML problem?

My 2011 has had a slow leak for most of its life, never could find a leak. This last month I had a low coolant light come on a few times , added 1/2 gal. So off to the dealer to get it checked out, it has all the signs of a leaking head gasket, the service rep tells me they are seeing fare number of LML come in with leaks. The antifreeze is pushed out the overflow on the hiway and you never see the leak. The quotes to repair range from 6500 to 8000. $ The truck has 400,000 kilometers on it and still drives like new, do I fix it or dump it?




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02 2500 4x4 extend cab long box,lb7 5 speed ali,hyper tech tuner,Bilstiens, 265/75/16 BFG AT 550,000 klm,s still going strong ( used for work )

04.5 2500 4x4 cc,sb, LLY, 5 speed Ali ,LT, stock,
sold @ 60,000 klm,s

06 2500 4x4 cc,sb,LBZ 6 speed Ali,265/75/16 BFG AT stock Sold 160,000 klm's
08 3500 4 x 4 LMM Sold @ 200,000 KM -
11 3500 4 x 4 crew short box 160,000 KM

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Old 02-26-2018, 11:35 PM   #2 (permalink)
drperry
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Find a shop that isn't overpriced like the dealership, first, and get a quote.

That's way expensive, even for Canadian dollars, lol.

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Old 02-26-2018, 11:41 PM   #3 (permalink)
diesel dog
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Quote:
Originally Posted by drperry View Post
Find a shop that isn't overpriced like the dealership, first, and get a quote.

That's way expensive, even for Canadian dollars, lol.

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The price for 8000.00 was a small shop, includes machining the heads and ARP studs. The GM dealer for just Labour wants 5000. Plus parts and machining. I am looking around for other prices, any one know of good shop in northern Alberta?


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02 2500 4x4 extend cab long box,lb7 5 speed ali,hyper tech tuner,Bilstiens, 265/75/16 BFG AT 550,000 klm,s still going strong ( used for work )

04.5 2500 4x4 cc,sb, LLY, 5 speed Ali ,LT, stock,
sold @ 60,000 klm,s

06 2500 4x4 cc,sb,LBZ 6 speed Ali,265/75/16 BFG AT stock Sold 160,000 klm's
08 3500 4 x 4 LMM Sold @ 200,000 KM -
11 3500 4 x 4 crew short box 160,000 KM

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Old 02-27-2018, 01:32 AM   #4 (permalink)
20dmax03
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Quote:
Originally Posted by diesel dog View Post
The price for 8000.00 was a small shop, includes machining the heads and ARP studs. The GM dealer for just Labour wants 5000. Plus parts and machining. I am looking around for other prices, any one know of good shop in northern Alberta?


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If youíre up for a challenge and have the time tackle it yourself! Guy I work with in sask paid $7500 at the stealer for his. I did my lmm myself for $3000 that was all gaskets, studs, egr delete, bd manifold, lb7 up pipe and machining. I ordered everything but the up pipe out of the states too!


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New Ride - 2008 Chevrolet 2500HD LTZ DMAX - Fass 150, s&b cold air, banks intercooler pipe, efi live w/dsp 5 ppei tuned, transgo jr, egr deleted, dpf deleted, dmax store downpipe, 5" exhaust, pcv rerouted, grade c head gaskets, arp head studs, bd drivers manifold, PPE ported rail fitting, PPE shim kit, dmax store tie rods

TOTALLED -
2003 Chevrolet 2500HD 6.6L Duramax - straight piped with 5 inch stacks, efi live w/ dsp 5 tuned by Idaho Rob , afe stage 2, ppe valve, intake horn mod, new injectors 260K km, air dog 150
wants - bigger spinny thingy, further upgraded transmission, solid front axle
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Old 02-27-2018, 06:31 AM   #5 (permalink)
holmestransfer
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Depends if you want to keep the truck for awhile yet or not. That 8k (Canadian, I assume) number is pretty on point, pretty much what youíd pay shops around here. With full disclosure, you obviously wont get what the trucks worth if you sell it now... and , youíll be spending a chunk more than 8k if you sell it and buy another. If you like the truck, get it fixed, and keep enjoying it. Head studs will take care of any potential head gasket failures down the road.


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Old 02-28-2018, 11:21 PM   #6 (permalink)
diesel dog
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Quote:
Originally Posted by 20dmax03 View Post
If youíre up for a challenge and have the time tackle it yourself! Guy I work with in sask paid $7500 at the stealer for his. I did my lmm myself for $3000 that was all gaskets, studs, egr delete, bd manifold, lb7 up pipe and machining. I ordered everything but the up pipe out of the states too!

Itís above my pay grade for sure, 20 years ago I may have gave it a go. I also donít have the proper equipment. Itís to bad they make these trucks so hard to work on.

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Quote:
Originally Posted by holmestransfer View Post
Depends if you want to keep the truck for awhile yet or not. That 8k (Canadian, I assume) number is pretty on point, pretty much what youíd pay shops around here. With full disclosure, you obviously wont get what the trucks worth if you sell it now... and , youíll be spending a chunk more than 8k if you sell it and buy another. If you like the truck, get it fixed, and keep enjoying it. Head studs will take care of any potential head gasket failures down the road.





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I do like the truck other than crappy paint, head gasket leak and emissions problems that required a delete. This truck exceeded my expectations in towing, fuel mileage and reliability . With that said I donít think I would buy another new diesel with emissions and cost of fuel, so I am going to repair it.


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02 2500 4x4 extend cab long box,lb7 5 speed ali,hyper tech tuner,Bilstiens, 265/75/16 BFG AT 550,000 klm,s still going strong ( used for work )

04.5 2500 4x4 cc,sb, LLY, 5 speed Ali ,LT, stock,
sold @ 60,000 klm,s

06 2500 4x4 cc,sb,LBZ 6 speed Ali,265/75/16 BFG AT stock Sold 160,000 klm's
08 3500 4 x 4 LMM Sold @ 200,000 KM -
11 3500 4 x 4 crew short box 160,000 KM

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Old 02-28-2018, 11:33 PM   #7 (permalink)
20dmax03
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Quote:
Originally Posted by diesel dog View Post
I do like the truck other than crappy paint, head gasket leak and emissions problems that required a delete. This truck exceeded my expectations in towing, fuel mileage and reliability . With that said I donít think I would buy another new diesel with emissions and cost of fuel, so I am going to repair it.


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I understand I was nervous about doing it too! No special tools needed all common hand tools. Torque wrench and feeler gauges is about as special as it gets!


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New Ride - 2008 Chevrolet 2500HD LTZ DMAX - Fass 150, s&b cold air, banks intercooler pipe, efi live w/dsp 5 ppei tuned, transgo jr, egr deleted, dpf deleted, dmax store downpipe, 5" exhaust, pcv rerouted, grade c head gaskets, arp head studs, bd drivers manifold, PPE ported rail fitting, PPE shim kit, dmax store tie rods

TOTALLED -
2003 Chevrolet 2500HD 6.6L Duramax - straight piped with 5 inch stacks, efi live w/ dsp 5 tuned by Idaho Rob , afe stage 2, ppe valve, intake horn mod, new injectors 260K km, air dog 150
wants - bigger spinny thingy, further upgraded transmission, solid front axle
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Old 02-28-2018, 11:53 PM   #8 (permalink)
diesel dog
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Quote:
Originally Posted by 20dmax03 View Post
I understand I was nervous about doing it too! No special tools needed all common hand tools. Torque wrench and feeler gauges is about as special as it gets!


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Did you lift the body? Or pull the engine?


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__________________
02 2500 4x4 extend cab long box,lb7 5 speed ali,hyper tech tuner,Bilstiens, 265/75/16 BFG AT 550,000 klm,s still going strong ( used for work )

04.5 2500 4x4 cc,sb, LLY, 5 speed Ali ,LT, stock,
sold @ 60,000 klm,s

06 2500 4x4 cc,sb,LBZ 6 speed Ali,265/75/16 BFG AT stock Sold 160,000 klm's
08 3500 4 x 4 LMM Sold @ 200,000 KM -
11 3500 4 x 4 crew short box 160,000 KM

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Old 02-28-2018, 11:56 PM   #9 (permalink)
20dmax03
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Join Date: Feb 2010
Location: Watson, Sk, Canada
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Neither. Put the hood up in the service position took the grill rad all that stuff out and went at er. Buddy of mine went over the fenders. Neither way is very comfortable but less work.


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New Ride - 2008 Chevrolet 2500HD LTZ DMAX - Fass 150, s&b cold air, banks intercooler pipe, efi live w/dsp 5 ppei tuned, transgo jr, egr deleted, dpf deleted, dmax store downpipe, 5" exhaust, pcv rerouted, grade c head gaskets, arp head studs, bd drivers manifold, PPE ported rail fitting, PPE shim kit, dmax store tie rods

TOTALLED -
2003 Chevrolet 2500HD 6.6L Duramax - straight piped with 5 inch stacks, efi live w/ dsp 5 tuned by Idaho Rob , afe stage 2, ppe valve, intake horn mod, new injectors 260K km, air dog 150
wants - bigger spinny thingy, further upgraded transmission, solid front axle
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Old 03-01-2018, 08:17 PM   #10 (permalink)
dangerfield69
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If you can't remove the cab, jack up & pull inner fenders, easier than going over the fenders.

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