GreaT! oil leak at 2,300 miles

[shane]

i changed the oil at 2k and it was a little wet where everyone has posted issues.... cleaned it off and today i notice a drip on the ground. Yep its oil!

jack up the car and there are some new oil drips around the rear main area!

[shane]

ok i cleaned the whole area with brake clean and wiped it all down.. ill check it again in a week.

[TomPierce]

Unfortunately, this problem has been reported by several members - a dealer visit is probably going to be required.

Quote from Charlie whats-his-name: Its rear main or pan gasket, but many look like rear main and you pull trans and find it dry and then see the oil pan or rear crank seal adapter plate is leaking.

[shane]

yep after i cleaned it all up i went for a 20 mile drive and there is already some drips...

[G8GT721]

mine had it as well, it was at the dealer for 2 or 3 days no big deal

[shane]

well just got off the phone with them.

said they added dye and let it idle for for a little bit and there was no leaks.....

so i had to remind them, i cleaned the whole area off drove it just 20 mins around one night and the area had drips already.

and i brought the car into them with drips off the area and there is for sure a leak.

he said they will mess with it again tommorrow.

i swear so today ended up being a waste

i told them im not just down the street and i work 8-5 so i dont have time to run back and fourth to them and need them problem fixed

[GT-610]

yes,i had this done.you put the dye in,drive for a week.back to the dealer and after 2 days(rental supplied)all done.They said the tranny had to be dropped away and a special sealant applid(not rear main they said)

[shane]

yea when i called he said they put dye in it and are gonna have you drive it for 500 miles... i said 500 isnt needed after being cleaned it leaked after 5-10 miles.. so they are gonna drive it tommorow

TSB says to replace rear main, but the main problem is the Rear plate leaking, thats what the RTV is for




Does not specifically include G8 but may be of use if you have an oil leak

#05-06-01-034E: 5.3L LC9, LS4, L33, LH6, LM4, 5.7L LS1, LS6, 6.0L LS2, L76, 6.2L L92, 7.0L LS7 - Engine Oil Leak at Rear Cover Assembly Area (Engine Block Porosity RTV Repair Procedure) - (Feb 12, 2007)


Subject: 5.3L LC9, LS4, L33, LH6, LM4, 5.7L LS1, LS6, 6.0L LS2, L76, 6.2L L92, 7.0L LS7-- Engine Oil Leak at Rear Cover Assembly Area (Engine Block Porosity RTV Repair Procedure)


Models: 2004-2007 Buick Rainier

2005-2007 Cadillac CTS-V

2007 Cadillac Escalade, Escalade ESV, Escalade EXT

2003-2007 Chevrolet Corvette, TrailBlazer

2004-2006 Chevrolet SSR

2005-2007 Chevrolet Silverado, Silverado SS

2006-2007 Chevrolet Impala SS, Monte Carlo SS, TrailBlazer SS

2007 Chevrolet Avalanche, Suburban, Tahoe

2003-2007 GMC Envoy, Sierra

2004-2005 GMC Envoy XUV

2007 GMC Yukon XL, Yukon Denali, Yukon XL Denali

2004-2006 Pontiac GTO

2005-2007 Pontiac Grand Prix GXP

2005-2007 Saab 9-7X

with 5.3L, 5.7L, 6.0L, 6.2L, 7.0L VORTEC™ GEN III or GEN IV V8 Engine (RPOs LC9, LS4, L33, LH6, LM4, LS1, LS6, LS2, L76, L92, LS7)




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This bulletin is being revised to update warranty information. Please discard Corporate Bulletin Number 05-06-01-034D (Section 06 -- Engine/Propulsion System).


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Condition
Some customers may comment on an engine oil leak.

Cause
Upon initial diagnosis, it may be determined that the leak is coming from the rear cover gasket. This condition may be caused by engine block porosity on the sealing surface. This issue pertains to aluminum block applications only.

Correction
Follow the steps for Oil Leak Diagnosis in SI to determine the source of the leak. If the leak has been diagnosed as coming from the engine rear cover assembly, refer to Engine Rear Cover Replacement in SI and remove the engine rear cover assembly. Inspect for engine block porosity where the engine rear cover mates to the engine block. If porosity is found anywhere on the sealing surface, use the following procedure to apply RTV to repair the engine block porosity. Refer to the illustration below.





Important: Clean any residual oil from the block and cover before applying the sealant in the next step.

Wipe a small amount of RTV, P/N 12378521 (in Canada, use P/N 88901148), onto the surface using a plastic scraper to fill the porosity.
Remove any excess RTV material, especially from inside the high pressure oil passage. Refer to #1 in the above illustration.
The joint may be closed immediately after applying the RTV. Total joint time after the RTV has been applied must be under 20 minutes.
Important: Refer to Engine Rear Cover Replacement in SI and follow the tightening specifications and sequence.

Reinstall the engine rear cover using a new gasket and a new crankshaft rear main seal. Refer to Engine Rear Cover Replacement in SI.
Parts Information
Important: For Saab (U.S.) only, use P/N 12345795, Engine Oil Dye (U.S.), or equivalent.

Part Number
Description
Qty

12574293 Gasket - Crankshaft Rear Oil Seal Housing 1

89060436 Seal, Crankshaft Rear Main 1

12378521 (U.S.) 88901148 (Canada) Sealant 1

12345795 (U.S.) Dye, Engine Oil 1

10953470 (Canada) Dye, Engine Oil 1

[sweetair]

I will be bringing mine in this Tues for a look-see. as well. Mine is dripping from under the tranny bell housings round metal access plate. Is that where yours is leaking from?

[shane]

yep...

there where be drips off the back of the motor and wet all around that area and the inspection hole...