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Rear seal on tranny leaking

Re: Rear seal on tranny leaking

Postby ASTE25 » Aug 01 2013, 1:38am

The seal could be worn and it could cause it to leak if not in regular use.
Jordan
2013 Blue Granite Metalic Silverado 2500HD Z71 4X4 extended cab regular bed
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Related Topics  quick rear tranny seal question/ transfercase   04' Transfer case seal keeps leaking NEED HELP!   Pinion seal leaking at 3000 miles   2009 Silverado front driver axle seal leaking   Tranny Lines Leaking   Door seal, rust leaking down door jam   rear main seal   94 Silverado Rear Main Seal   Trans Rear Output Shaft Seal   Rear main seal bad, at 25,000 miles   rear end leaking oil again   Rear Slider Window Leaking   Oil pan and rear main seal gasket replacement   Fluid leaking from rear driveshaft joint 
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Re: Rear seal on tranny leaking

Postby BASSDO [OP] » Aug 01 2013, 1:46am

Alright well I will check it out.
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Re: Rear seal on tranny leaking

Postby BASSDO [OP] » Aug 01 2013, 4:27pm

Ok I can not find anyone that can tell me what seal I need. Autozone has three and they do not know which one. I can't take the old one out and take it in and get the right one because Autozone doesn't have any and they have to order it. This needs to be done in one day being I drive the truck every day.

This one says under notes "shift selector null"
image1.png


This one says under notes "extension housing null"
image2.png


This one says under notes "extension housing seal transmission model 4L80-E, except booted" (I am thinking it is this one) This one also comes booted, but mine currently is not booted.
image3.png


For any one who has changed it can you tell me which seal is the correct one?
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Re: Rear seal on tranny leaking

Postby BASSDO [OP] » Aug 01 2013, 6:33pm

Ok nevermind on those pictures. I have a 4spd automatic. Is that the 4L80-E tranny or is that the 5spd? the output shaft seal is the extension housing one right? There are 3 others, one for shift selector, torque converter, and one for 4L80-E.
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Re: Rear seal on tranny leaking

Postby ASTE25 » Aug 01 2013, 7:26pm

This should be what you need. You do not have to use the bushing that comes with it if yours is ok.

http://shop.advanceautoparts.com/webapp ... ssion+seal
Jordan
2013 Blue Granite Metalic Silverado 2500HD Z71 4X4 extended cab regular bed
6.6L Duramax/Allison 6 speed
Line-X premium over the rail (black)
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Re: Rear seal on tranny leaking

Postby BASSDO [OP] » Aug 01 2013, 7:30pm

Thank you. That is exactly what I needed to know. Will be replacing it Saturday while the driveshaft is out.
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Re: Rear seal on tranny leaking

Postby ASTE25 » Aug 01 2013, 7:42pm

It's not a bad job. Just be careful not to damage the area in the extension housing where the seal presses in or it will leak.
Jordan
2013 Blue Granite Metalic Silverado 2500HD Z71 4X4 extended cab regular bed
6.6L Duramax/Allison 6 speed
Line-X premium over the rail (black)
User avatar
ASTE25
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
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Re: Rear seal on tranny leaking

Postby BASSDO [OP] » Aug 02 2013, 1:22am

Need help! Replacing carrier bearing and can not get rear half of driveshaft to slide off front half.. is there a trick I am missing?
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Re: Rear seal on tranny leaking

Postby ASTE25 » Aug 02 2013, 5:37am

You will probably have to take it to a machine shop and have it pressed apart.
Jordan
2013 Blue Granite Metalic Silverado 2500HD Z71 4X4 extended cab regular bed
6.6L Duramax/Allison 6 speed
Line-X premium over the rail (black)
User avatar
ASTE25
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 10799
Topics: 19
Images: 21
Blogs: 0
Joined: Jan 03 2011, 6:37am
Years of membership: 3 years of membership3 years of membership3 years of membership
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Year: 2013
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Extra Info: 2500HD Z-71
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Re: Rear seal on tranny leaking

Postby BASSDO [OP] » Aug 02 2013, 1:22pm

Damn really? Well I couldn't get the rear seal for the tranny. Takes 2 to 3 days to order it so I guess I will just get that and take the truck in and have them replace both.
Original Poster
BASSDO
Firing on 8 cylinders [L1]
Firing on 8 cylinders [L1]
Posts: 97
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Joined: May 29 2013, 8:53pm
Location: Arizona
Year: 2005
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Extra Info: 2500 HD 6.0L
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