TSB's

Noises From Birdland

Some owners of 2013-2014 Cadillac XTS vehicles may complain about a squeak or chirp noise from the rear of the vehicle, noticeable at low speeds with the window open. This is caused by a squeak at the axle-to-seal interface due to lack of lubrication.

Replace the left and right axle seals and lubricate the seal lip area and the inner part of the seal with clean axle lubricant, GM 88900401 or equivalent.

Note that there are two seal designs, which are color-coded. Replace with the same color-code.

P/N.......................SEAL

20986535..............Seal, differential drive, first design, black

22845699..............Seal, differential drive, second design, yellow

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