Something's leaking...
Thread Starter
Pro
Joined: May 2004
Posts: 685
Likes: 0
From: Escondido CA
Something's leaking...
Alright all... I'm sure there is experience out there.
I have noticed on my garage floor a oil-type leak near the rear end of my '04 mn6 Coupe. It is nearly clear in color, and defninitely some type of lubricant/oil.
Anyone out there experience this same thing and can tell me the cause?
Appreciate any input.
Wolf
I have noticed on my garage floor a oil-type leak near the rear end of my '04 mn6 Coupe. It is nearly clear in color, and defninitely some type of lubricant/oil.
Anyone out there experience this same thing and can tell me the cause?
Appreciate any input.
Wolf
Burning Brakes
Joined: Jul 2004
Posts: 1,119
Likes: 0
From: Spring Branch Texas
Originally Posted by wolfmd
Alright all... I'm sure there is experience out there.
I have noticed on my garage floor a oil-type leak near the rear end of my '04 mn6 Coupe. It is nearly clear in color, and defninitely some type of lubricant/oil.
Anyone out there experience this same thing and can tell me the cause?
Appreciate any input.
Wolf
I have noticed on my garage floor a oil-type leak near the rear end of my '04 mn6 Coupe. It is nearly clear in color, and defninitely some type of lubricant/oil.
Anyone out there experience this same thing and can tell me the cause?
Appreciate any input.
Wolf
Le Mans Master
Joined: Jul 2004
Posts: 5,865
Likes: 6
From: Saraland Alabama
St. Jude Donor '11-'12-'13-'14-'15-'16
It is a very common problem. Before you take it in for repair do some research on here and find the part numbers for the new and improved seals and check with the dealer to make sure they are aware of the current repair parts being used so you can get the job done right the first time. You can probably even get a copy of the TSB which describes the proper procedure to fix this leak. Over the past few years the "fix" has changed and so have the repair parts.
I just had mine fixed a couple of months ago.
I just had mine fixed a couple of months ago.
Race Director
Joined: Oct 2002
Posts: 11,945
Likes: 12
From: Vancouver
2015 C5 of Year Finalist
St. Jude Donor '05-'06-'07-'08-'09-'10
Originally Posted by RCK1999
Rear differential seals!
Being an '04 you should be good to go with your warranty. Keep us posted.
MONARTOR
Joined: Aug 2001
Posts: 250,161
Likes: 146
From: What I know, is dwarfed by what I pretend to know
Cruise-In 5-6-7-8 Veteran
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
Originally Posted by Stock Man
Being an '04 you should be good to go with your warranty. Keep us posted.
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Race Director
Joined: Nov 2003
Posts: 12,346
Likes: 5
From: Mustang OK
Leaking differential side seals is a common problem as others mentioned above. If you can get the Forum search feature to cooperate you should find numerous threads on this topic. Have it fixed under warranty. Good luck! 
I'll definitely be taking that in for warranty service.
Pro
Joined: Nov 2002
Posts: 664
Likes: 0
From: worcester Mass
Originally Posted by FLACHUSNRET
It is a very common problem. Before you take it in for repair do some research on here and find the part numbers for the new and improved seals and check with the dealer to make sure they are aware of the current repair parts being used so you can get the job done right the first time. You can probably even get a copy of the TSB which describes the proper procedure to fix this leak. Over the past few years the "fix" has changed and so have the repair parts.
I just had mine fixed a couple of months ago.
I just had mine fixed a couple of months ago.
Team Owner
Joined: Jun 1999
Posts: 41,793
Likes: 153
From: Houston,Texas USA
I can't believe that the axle seal leak is still a problem on the 04's. I guess GM dosen't improve anything. The same problems that I had with my 99, are still a problem with the 04's.
Race Director
Joined: Nov 2003
Posts: 12,346
Likes: 5
From: Mustang OK
Originally Posted by Tom/99
I can't believe that the axle seal leak is still a problem on the 04's. I guess GM dosen't improve anything. The same problems that I had with my 99, are still a problem with the 04's.
Last edited by GrayC5; Feb 3, 2005 at 02:54 PM.
Team Owner
Joined: Jun 2001
Posts: 55,394
Likes: 1
Rear diff is my first guess but thats normally light reddish in color or the sealant itself causes that color.
Rear diff leaks are common on the C5 and it doesnt matter which year or how new the car. This is because a 2004 C5 rear diff has the same design as earlier years so if earlier years are subject to leaking yours will be subject to leaking as well. I have had 3 leaks since I have owned my 99.
Rear diff leaks are common on the C5 and it doesnt matter which year or how new the car. This is because a 2004 C5 rear diff has the same design as earlier years so if earlier years are subject to leaking yours will be subject to leaking as well. I have had 3 leaks since I have owned my 99.
