Complaint Complaints of oil leaking from rear differential oil pan area

Bulletin number

LI35.31-P-079847

Component

Power train

Summary

Complaint Complaints of oil leaking from rear differential oil pan area. Cause In the groove where the pan seal is placed, there may be imperfections (porosity) in the casting causing fluid to leak past the seal. The supplier states this only affects rear differentials with 2023 production date. The production date can be found stamped on the housing cover (see attachment). Remedy 1. Follow the attached instructions to inspect the rear differential cover for porosity. 2. Repair the vehicle with the applicable repair kit for the chassis. - The new oil pans that come with the repair kit should be produced in 2024 and not have this issue. When submitting the claim, please reference this LI document and if porosity was found.

Owners of these vehicles have filed 43 complaints in the transmission category.