Seller notes

6L80 - 6L90 Transmission Lube Damfits Rear/Output Planetary fits 2006-up (1) Lube Dam Plate Replacement The output planetary assembly in GM 6L80 and 6L90 transmissions has a lube dam, or cover, that directs lube oil flow to the planetary lube feed passages. Over time, the lube dam allows gunk and sludge buildup, which chokes off lubrication. This commonly happens after overhaul, resulting in comebacks due to failed planetary assemblies. To clean out the lube passages, the lube dam must be remove...

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