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2005 Yukon Xl With A 5.3 Liter V8 Engine (l59) Oil Leak
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Question
yukonxl2005
I have a 2005 Yukon XL with a 5.3 Liter V8 engine (L59), at about 5,000 miles the engine developed a small oil leak at the engine rear main seal, see attached photo. The dealer replaced the rear main seal and the valve cover gaskets.
However, the leak has continued for the last year and a half (25,000 miles). The leak is small enough so no oil is found on the floor but as shown in the pictures, the oil covers the bottom of the cast aluminum oil pan. The area is cleaned but always returns as shown in picture, I have confirmed the leak is not coming from any part of the valve covers or the oil drain plug.
I found information about Bulletin #05-06-01-34E (Engine Oil Leak at Rear Cover Assembly Area), however this bulletin only applies to the 2007 Yukon XL. Is there a similar bulletin for the 2005 Yukon XL? What is leaking?
Yukon_XL_Pic1.pdf
Yukon_XL_Pic1.pdf
Yukon_XL_Pic1.pdf
Yukon_XL_Pic1.pdf
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