# Service bulletin 44\-036

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: 10206087
- Published by NHTSA: 2022\-01\-06
- Manufacturer's number: 44\-036
- Manufacturer's date: 2021\-12\-16
- NHTSA component: FUEL SYSTEM, GASOLINE

## NHTSA's summary

Information Only: An improved procedure has been developed for servicing the fuel filter on model 348 chassis equipped with a PX\-9 and 11 5/8” frame rails.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206087-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206087-9999.pdf)

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

## Components

Fuel system

## Vehicles listed

- 2013 to 2021 PETERBILT 348

## Recalls for the same vehicles and component

- [2021323](/recalls/tc/2021323.md), 2021-05-26: Fuel System
- [21V391000](/recalls/nhtsa/21V391000.md), 2021-05-26: FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL
- [2014339](/recalls/tc/2014339.md), 2014-08-07: Fuel System
- [14V486000](/recalls/nhtsa/14V486000.md), 2014-08-07: FUEL SYSTEM, DIESEL

## Other bulletins for the same vehicles and component

- [CE036](/bulletins/11032291.md), 2026-05-06, Warranty extension: FUEL/PROPULSION SYSTEM. KW \& PB DEF Quality Sensor part number Q21\-6127\-001 for PACCAR PX\-7 and Cummins X15 engines has been added to this warranty policy.
- [43\-071](/bulletins/10201965.md), 2021-10-05, Service bulletin: FUEL SYSTEM, DIESEL. Fix\-As\-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid \(DEF\) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue operation with a failed DEF sensor by disabling the DEF sensor diagnostics.
- [21\-PBD](/bulletins/10198809.md), 2021-07-06, Service bulletin: FUEL SYSTEM, GASOLINE. Safety Recall – Cummins Fuel Rail Leak – NHTSA ID: 21V391 / TC: 2021\-323, Cummins Recall: C2423. Cummins PX9 and ISX12 fuel rails may leak around a sealing washer, potentially resulting in fuel leaks. Undetected prolonged diesel fuel spray in the presence of an ignition source may increase the risk of fire.

JSON: [/v1/bulletins/10206087](/v1/bulletins/10206087)

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