Rear main seal…
Thread Starter
Instructor
Joined: Aug 2006
Posts: 159
Likes: 5
From: New jersey
Rear main seal…
I have a 2005 c6 automatic. While I was getting an oil change the guy tells me I have a small rear main leak and it going to up to 4,000. To fix. I know it’s a big job. But I jacked the car you and pulled of that rubber oval plug and my fly wheel is dry even looks like light rust on it. My question is, if the seal was leaking, shouldn’t that flywheel have oil on it?
CF Community Team
Joined: Apr 2016
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From: Pittsburgh
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That is a time-consuming repair for sure, the torque tube needs to be removed to gain access to the seal
Safety Car
Joined: May 2016
Posts: 4,667
Likes: 1,847
From: Erlanger, Kentucky
I have a 2005 c6 automatic. While I was getting an oil change the guy tells me I have a small rear main leak and it going to up to 4,000. To fix. I know it’s a big job. But I jacked the car you and pulled of that rubber oval plug and my fly wheel is dry even looks like light rust on it. My question is, if the seal was leaking, shouldn’t that flywheel have oil on it?
I used to have a 2002 C5 Z06. At 97K miles, I did a clutch change. Rear main seal had a slight seepage but not a leak. I left it alone and never had any problem.
Melting Slicks
Joined: Apr 2019
Posts: 2,505
Likes: 1,166
From: Northern Wisconsin
Instead of the rear crankshaft seal leaking, oil might be leaking from one or more of the side bolts that secure the crankshaft main bearing caps to the skirt in the block. Those bolts are supposed to be sealed with silicone under the bolt head, so if that wasn't done, it would leak. A careful examination should expose the source of the leak.
