# Service bulletin 9100455

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11012379
- Published by NHTSA: 2025\-01\-07
- Manufacturer's number: 9100455
- Manufacturer's date: 2025\-01\-04
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: MUFFLER, TAILPIPE

## NHTSA's summary

EXHAUST \- MUFFLER AND TAILPIPE For Exhaust noise squeak during startup acceleration deceleration please do following: 1. DO NOT remove actuators 2. Verify noise by cycling EEV manually via WiTech 3. Verify noise with test drive \(optional\) 4. If the noise is confirmed, replace the system without removing the actuators.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11012379-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11012379-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Vehicles listed

- 2020 to 2023 CHRYSLER 300
- 2020 to 2023 DODGE CHALLENGER
- 2020 to 2023 DODGE CHARGER

JSON: [/v1/bulletins/11012379](/v1/bulletins/11012379)

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