Yukon XL 2500 4WD V8-6.0L VIN N (2006)
Once the dye has started to appear, disassemble and inspect for small cuts in the torque converter hub-to-oil pump seal assembly (243). The cuts may be
caused by small burrs on the torque converter hub, oil pump drive slots. The burrs can be seen or felt with your finger and if found, the burrs should be
removed with a file. Also replace the oil pump seal assembly. Refer to the above illustration (1).Do not replace the torque converter for this concern.
The torque converter hub-to-oil pump seal assembly leak caused by these cuts is typically very small, causing only a few drops of fluid loss.
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