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03-23-2009, 04:38 PM
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Hummer Veteran
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Join Date: Feb 2008
Location: North Carolina
Posts: 144
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FRONT DIFF. LEAK HELP!!!
I have a 06 H3 with 35's leveled and 75000 miles. Changed the oil in it yesterday and noticed a bunch of oil on the front diff cover. Called Independence Hummer in Charlotte and they said they couldn't do anything without a 95 dollar diagnostic charge. I asked what goes in the front diff and the lady said she didn't know (cant figure out why they cant get intelligent people to answer the phones in a shop). I'm thinking Id' just pull the cover and check it out for myself, hopefully its just a blown seal. Problem is I don't know what goes back in there gear oil, 90W, synthetic etc... Anyone know? Anyone else have this happen yet???
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06 H3, Boulder Grey (somtimes/mostly just mud, color of mud varies), Leveling Kit, 35" Toyo Open Country M/T's, Westin chrome nerf bar, chrome brush guard, Chrome kit, chrome roof bars, navigation, XM,
brush gaurd lights. Want: 4" or 6" lift, rock rails to replace the steps, roof rack w/lights, want a rack above the spare on rear door, custom seat covers...should be done then but I doubt it 
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03-23-2009, 05:45 PM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: FRONT DIFF. LEAK HELP!!!
75w90 full synthetic gear lube
Wipe all the fluid off with a clean rag, then spray all oil surfaces with Brake Parts Cleaner and it will dry up all the oil. Drive it around the block and stop and check to see where the source of the leak is - as there should be fresh fluid at the leak. Should be easy to spot now that it is all cleaned up
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H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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03-23-2009, 10:29 PM
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Hummer Guru
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Join Date: Jul 2006
Location: Stouts Creek
Posts: 4,192
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Re: FRONT DIFF. LEAK HELP!!!
Your about due for a change. When you id the problem have it serviced with the new seal...
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"For God so loved the world he gave his only son that whoever believe in him would not perish but have everlasting life. "
(John 3:16)
2006 H3 Slate Blue,Header,Jacked,CAI,Toyo35's,HHO.
Priors...
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71 Vette
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03-24-2009, 01:21 PM
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Hummer Veteran
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Join Date: Feb 2008
Location: North Carolina
Posts: 144
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Re: FRONT DIFF. LEAK HELP!!!
any problem using RTV silicone or definitely need a new seal???
__________________
06 H3, Boulder Grey (somtimes/mostly just mud, color of mud varies), Leveling Kit, 35" Toyo Open Country M/T's, Westin chrome nerf bar, chrome brush guard, Chrome kit, chrome roof bars, navigation, XM,
brush gaurd lights. Want: 4" or 6" lift, rock rails to replace the steps, roof rack w/lights, want a rack above the spare on rear door, custom seat covers...should be done then but I doubt it
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03-25-2009, 12:04 PM
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Hummer Guru
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Join Date: Jul 2006
Location: Stouts Creek
Posts: 4,192
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Re: FRONT DIFF. LEAK HELP!!!
Its normal to have some seepage. Any pics?
For the diagnostic charge you could probably have it nearly done at a local shop.
If you service it yourself...
Add some fluid to top it off in mean time. Wipe it down to observe problem.
Then reseach how to solve it and get it done.
Good Luck
__________________
"For God so loved the world he gave his only son that whoever believe in him would not perish but have everlasting life. "
(John 3:16)
2006 H3 Slate Blue,Header,Jacked,CAI,Toyo35's,HHO.
Priors...
Explorer
Commander
71 Vette
You Name it!
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03-25-2009, 04:29 PM
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Hummer Veteran
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Join Date: Feb 2008
Location: North Carolina
Posts: 144
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Re: FRONT DIFF. LEAK HELP!!!
no this wasn't normal seepage. The whole front drive unit was completely covered. I cleaned it up yesterday evening with brake cleaner and drove around the parking lot for a while and did not see anymore. I think tonight Ill add some 75W90 and drive around see what happens
__________________
06 H3, Boulder Grey (somtimes/mostly just mud, color of mud varies), Leveling Kit, 35" Toyo Open Country M/T's, Westin chrome nerf bar, chrome brush guard, Chrome kit, chrome roof bars, navigation, XM,
brush gaurd lights. Want: 4" or 6" lift, rock rails to replace the steps, roof rack w/lights, want a rack above the spare on rear door, custom seat covers...should be done then but I doubt it
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