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| Drivetrain Discussion on gearing, CV joints, driveshafts, axles, brakes, etc. |
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12-06-2012, 03:24 PM
| eBay Motors #1 (permalink) |
| Junior Member Join Date: Mar 2011 Location: so cal
Posts: 78
| LMM Front Diff leaking, Seal Kit? need to reseal my entire front diff, is there anything special I should know about removing it or is there any special seal kit/gaskets I will need beforehand, or is it all just siliconed together. Any help would be great thanks.
__________________ 08 LMM 2500HD C/C 4wd Short Bed Diamond Eye 4" straight pipe turbo back Edge CTS Race EGR Blocked PCV Reroute Debadged HID/LED all around |
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12-07-2012, 05:14 AM
| eBay Motors #2 (permalink) |
| DF Sponsors    Join Date: Mar 2009 Location: Kathleen, GA
Posts: 9,578
| Should just be RTV'd on there. Make sure its not just a fill or drain plug loose.
__________________ Willie AMSOIL Premier Direct Jobber 06 LLY CCSB EFI Live |
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12-07-2012, 10:22 PM
| eBay Motors #3 (permalink) |
| Junior Member Join Date: Mar 2011 Location: so cal
Posts: 78
| Anyone with any experience pulling one of these apart? Would like to hear something better than a should be, anyone? Definitely leaking at pumpkin half and then some, long story...
__________________ 08 LMM 2500HD C/C 4wd Short Bed Diamond Eye 4" straight pipe turbo back Edge CTS Race EGR Blocked PCV Reroute Debadged HID/LED all around |
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12-07-2012, 10:48 PM
| eBay Motors #4 (permalink) |
| Insert cool slogan here   Join Date: Sep 2008 Location: North Pole AK
Posts: 4,044
 | Is it leaking where the diff splits or at the seals?
__________________ 2010 GMC Sierra CC SB 4X4 6" lift and 315's 2008 GMC Sierra Crew Cab 4X4 (wifes) stock now... Zone lift going on and 305's |
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12-07-2012, 11:26 PM
| eBay Motors #5 (permalink) |
| Junior Member Join Date: Mar 2011 Location: so cal
Posts: 78
| Its leaking at two pumkin halves, right down the center and also at the shaft where the electronics hook into the pumpkin
__________________ 08 LMM 2500HD C/C 4wd Short Bed Diamond Eye 4" straight pipe turbo back Edge CTS Race EGR Blocked PCV Reroute Debadged HID/LED all around |
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12-07-2012, 11:35 PM
| eBay Motors #6 (permalink) |
| Insert cool slogan here Join Date: Sep 2008 Location: North Pole AK
Posts: 4,044
| Good luck. My 08 lmm would leak every time it got cold. Took it to the dealer 5-6 times and it wasn't until 2011 when I blew the dif and the dealer replaced it did it quit leaking.
__________________ 2010 GMC Sierra CC SB 4X4 6" lift and 315's 2008 GMC Sierra Crew Cab 4X4 (wifes) stock now... Zone lift going on and 305's |
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12-07-2012, 11:57 PM
| eBay Motors #7 (permalink) |
| Duramax Lifetime Supporter   Join Date: Jul 2010 Location: bellingham,wa
Posts: 95
| Sub'd for any info. Mines doing the same.
__________________ 07.5 GMC LMM CCSB 6"lift, H&Sblack maxx,dpf delete and straightpiped, pcv reroute, egr blocked, fprv shim kit, bilstein 5100's and rear bags, custom traction bars, 35" nittos, 20x10's. SOLD-lb7 ECSB lifted w/efi live |
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12-07-2012, 11:58 PM
| eBay Motors #8 (permalink) |
| Junior Member Join Date: Mar 2011 Location: so cal
Posts: 78
| Why i want to take care of it right the first time, wierd that it would leak when it got cold though, mines the other way around. The oil gets thinner in the summer and leaks out quicker than in the winter when its thicker.
__________________ 08 LMM 2500HD C/C 4wd Short Bed Diamond Eye 4" straight pipe turbo back Edge CTS Race EGR Blocked PCV Reroute Debadged HID/LED all around |
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12-08-2012, 12:02 AM
| eBay Motors #9 (permalink) |
| Junior Member Join Date: Mar 2011 Location: so cal
Posts: 78
| First time hearing about it leaking randomly though, long story short, drove very far distance in 4wd, oops, blew oil out the breather tube and cooked all seals, hence now leaking in a few spots so i need a complete resealing. Still hope someone has had one of these diffs apart here?
__________________ 08 LMM 2500HD C/C 4wd Short Bed Diamond Eye 4" straight pipe turbo back Edge CTS Race EGR Blocked PCV Reroute Debadged HID/LED all around |
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12-08-2012, 05:24 AM
| eBay Motors #10 (permalink) | |
| DuramaxForum Enthusiast Join Date: Sep 2010 Location: Maritimes, Canada
Posts: 3,784
| Quote:
Yes, they are just siliconed together and the key to having it be successful is twofold. First make sure the surfaces are completely free of any oil or other debris (brake cleaner, then dry well). Second make sure the breather tube has no obstructions and flows freely. I would also suggest replacing the axle seals while you're in there since they will be easy to access at that point. I would use an aerosol silicone sealer called 'the right stuff' (Permatex Ultra Black and Ultra Gray are also good alternatives) as it does a great job sealing. Keep in mind a little goes a long way and to always make sure the silicone gets applied towards the inside of the bolt holes.
__________________ 2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater Last edited by MTL_Dmax; 12-08-2012 at 05:36 AM. | |
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