Some 2018-2019 Toyota Tundra trucks may exhibit a rear brake squeal/squeak noise during braking, typically heard at low speeds.

Confirm that the noise is coming from the rear and not the front. Confirm the presence of a plastic seal as shown in the illustration. 

Once the plastic seal has been confirmed to be present, create a TAS case and include photos of the plastic seal, caliper bracket, fit kit and rotor. Do not remove the plastic seal from its position.