# Service bulletins for the 2023 Peterbilt 367

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.

38 bulletins from NHTSA, as of 2026-10-19.

- [42\-070](/bulletins/11038569.md), 2026-10-17, Service bulletin: UNKNOWN OR OTHER. Due to supplier constraints, an authorized aftermarket surge tank has been made available.
- [P001](/bulletins/11037541.md), 2026-09-29, Service bulletin: ENGINE. "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
- [24KWL/PBL](/bulletins/11036291.md), 2026-08-20, Service bulletin: FORWARD COLLISION AVOIDANCE: WARNINGS. The verbiage in the Introduction section has been updated.
- [43\-088](/bulletins/11036289.md), 2026-08-20, Service bulletin: ENGINE. The procedure has been updated to include additional steps for verifying the software level on the vehicle electronic control unit \(VECU2\) and digital display \(DD\). Steps have also been added to the PACCAR Common Rail Injection 2 \(PCI2\) software verification.
- [43\-088](/bulletins/11035202.md), 2026-07-23, Service bulletin: ENGINE. This optional software update is now available for chassis equipped with EMY 2021B\-2023 PACCAR MX\-11 and MX\-13 engines. This update provides customers with additional time to service their trucks before a DEF\-related derate occurs. The software is being offered to customers in alignment with recently updated regulatory agency guidance.
- [E318](/bulletins/11035147.md), 2026-07-22, Service bulletin: ENGINE. The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage. The Warranty section has also been updated to include Peterbilt specific SRT codes for filing cross\-division repairs.
- [43\-088](/bulletins/11035108.md), 2026-07-21, Service bulletin: ENGINE. "The software is not yet available. The bulletin will be updated when more information is available."
- [43\-088](/bulletins/11034394.md), 2026-07-02, Service bulletin: ENGINE. "An optional software update will be available on 07/06/2026 for chassis equipped with EMY 2021B\-2023PACCAR MX\-11 and MX\-13 engines. This update provides customers with additional time to service theirtrucks before a DEF\-related derate occurs. The software is being offered to customers in alignment withrecently updated regulatory agency guidance."
- [43\-080](/bulletins/11033918.md), 2026-06-17, Service bulletin: ELECTRICAL SYSTEM. "KW: A new recommended repair has been added to verify the software level and close the campaign in SIR.The repair procedure has been updated with additional note boxes for clear instructions. PB: The repair procedure has been updated with additional note boxes for clear instructions."
- [E335](/bulletins/11033356.md), 2026-06-03, Service bulletin: ENGINE. Warranty section has been updated to include hood length definitions and filing instructions for progressive damage.
- [43\-087](/bulletins/11033349.md), 2026-06-03, Service bulletin: UNKNOWN OR OTHER. \(KW\) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation.
- [43\-087](/bulletins/11032297.md), 2026-05-06, Emissions: ENGINE. EMY21\-25 GHG Label Replacement \(KW\) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation. \(PB\) Certain Model 367 / 389 / 567 / 579 / 589 have updated GHG labels available for order and installation.
- [43\-087](/bulletins/11032295.md), 2026-05-06, Service bulletin: UNKNOWN OR OTHER. \(KW\) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation. \(PB\) Certain Model 367 / 389 / 567 / 579 / 589 have updated GHG labels available for order and installation.
- [45\-070](/bulletins/11032293.md), 2026-05-06, Service bulletin: ENGINE. The attached procedures document has been updated with more detail and explanations. This is not a stand\-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.
- [E335](/bulletins/11032289.md), 2026-05-06, Emissions: ENGINE. E335 Warranty wording update Apr 2026
- [E338](/bulletins/11032288.md), 2026-05-06, Service campaign: ENGINE. Certain EPA21 PACCAR MX engines are equipped with PHINIA fuel injectors that do not meet PHINIA’s manufacturing specifications.
- [22KWE/PBE](/bulletins/11030916.md), 2026-04-07, Service bulletin: STEERING. Sheppard Recall Order Process Update \- The Parts section has been updated with revised steps for opening a TCS365 Order Support – Order Inquiry case.
- [24PBE\_KWE](/bulletins/11029738.md), 2026-03-05, Service bulletin: ELECTRICAL SYSTEM. The Parts section has been updated to clarify that freight charges for safety recall orders should not be passed on to the end customer.
- [CE031](/bulletins/11029640.md), 2026-03-05, Warranty extension: ENGINE. Fuel Injection Pump part number 2344776PEX for MX\-13 engines has been added to this warranty policy.
- [45\-070](/bulletins/11028314.md), 2026-02-05, Service bulletin: ENGINE. Procedure pictures updated for clarity. When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand\-alone process but must be used alongside Cummins troubleshooting steps. Cummins Quickserve will reference this bulletin for fault codes 555 or 556.
- [24PBE](/bulletins/11026415.md), 2025-12-05, Service campaign: ELECTRICAL SYSTEM; POWER TRAIN. The right\-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right\-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “\!” next to DNR/DNRP indicator, “\-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
- [CE033](/bulletins/11021404.md), 2025-08-05, Warranty extension: ENGINE. 32 fuel injector part numbers \(16 for MX\-11 and 16 for MX\-13\) have been added to this warranty policy.
- [E318](/bulletins/11020043.md), 2025-07-02, Service bulletin: ENGINE; FUEL/PROPULSION SYSTEM. Newly designed fuel injectors are available for EPA2021 compliant PACCAR MX\-series engines to optimize engine performance. Injectors must be replaced as a full set \(6 injectors\) and associated software must be updated at the same time.
- [43\-080 PB](/bulletins/11016473.md), 2025-04-04, Service campaign: ELECTRICAL SYSTEM. As of 03/25/2025, this campaign has resumed. Software updates are now available to complete this campaign.
- [E327](/bulletins/11014768.md), 2025-03-04, Emissions: ELECTRICAL SYSTEM; ENGINE. "Vehicles equipped with PACCAR MX engines with Engine Software Version NA202 or NA206 may display a dash STOP lamp incorrectly. PCI\-2 software on these chassis must be reverted from NA202 to NA201 \(Pack 2 injectors\) or from NA206 to NA191 \(Pack 1 injectors\) to prevent incorrect STOP lamp display.

More: [the next page](/v1/vehicles/2023_peterbilt_367/bulletins?cursor=2025-03-04_11014768) (JSON)

JSON: [/v1/vehicles/2023_peterbilt_367/bulletins](/v1/vehicles/2023_peterbilt_367/bulletins)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%202023%20Peterbilt%20367&page=https%3A%2F%2Fopen.wenmarpro.com%2Fmakes%2Fpeterbilt%2F367%2F2023%2Fbulletins&vehicle=2023%20Peterbilt%20367)