Rear Axle Pinion Seal May Leak on Cadillac STS

Problem overview

The rear axle pinion seal may leak causing fluid loss and possible internal rear end damage. Replacing the faulty seal will commonly correct this concern.

12 people reported this problem

Cadillac STS vehicles with this problem

5 model years affected

Average mileage: 74,001 miles

(21,000 - 144,000)

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Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Rear Axle Pinion Seal May Leak on Cadillac STS

Problem overview

Cadillac STS vehicles with this problem

Need a diagnosis? Trust our Cadillac experts.

Search for another problem

Ask our experts about your Cadillac.