# Service bulletin 43\-078

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: 10235708
- Published by NHTSA: 2023\-05\-05
- Manufacturer's number: 43\-078
- Manufacturer's date: 2023\-04\-04
- NHTSA component: STRUCTURE

## NHTSA's summary

All Model 389X chassis with 7” exhaust pipes need silicone sealant applied

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10235708-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10235708-9999.pdf)

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

## Components

Body and frame

## Vehicles listed

- 2022 to 2023 PETERBILT 389

## Other bulletins for the same vehicles and component

- [02\-169](/bulletins/10214856.md), 2022-07-01, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE. Info Only \- Chassis equipped with a flush mounted battery box between the frame rails, and containing 3 batteries, may experience battery movement on the side where the single battery resides. This bulletin contains a procedure to fabricate a bracket to hold this battery in place.
- [02\-168](/bulletins/10201956.md), 2021-10-05, Service bulletin: STRUCTURE. Information Only \- Rear axle Quarter Fenders with less than two inches of clearance between the top of the quarter fender and the bottom of the trailer/equipment are susceptible to damage. The lack of clearance could result in cracked/broken quarter fenders or complete separation if undetected or un\-remedied.

JSON: [/v1/bulletins/10235708](/v1/bulletins/10235708)

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