GMC Sonoma Problem Report
GMC Sonoma Transmission Leak From Output Shaft Seal
A fluid leak may develop from the transmission output shaft seal. This leak may cause the transmission mount to become oil soaked and require replacement of the mount along with the leak repair.
Leaking transmission fluid from the top of the trany topmount soak with fluid - Visitor
leaking outout shaft seal. - Visitor
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This engine may leak oil from the valve cover gasket.