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Service bulletin TSB 23-2426

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10248367
Published by NHTSA2024-01-05
Manufacturer's numberTSB 23-2426
Manufacturer's date2023-12-20
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Some 2023 F-Super Duty chassis cab vehicles equipped with a 6.7L engine may exhibit an engine coolant temperature gauge reading at the high end of the normal range while towing in high ambient temperatures with no diagnostic trouble codes (DTC) stored in the powertrain control module (PCM) or warning messages present in the instrument panel cluster (IPC). This may be due to the software in the IPC.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
FORD F-250 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-450 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-550 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-600 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-650 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-750 SD2023 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
TSB 26-23752026-08-19. Service bulletin. This article supersedes TSB 26-2050 to increase the labor operation allowance of labor operations A and B. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Poor shift quality Illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2704 and P0771 stored in the PCM/TCM. This may be due to a calibration in the TCM and/or wear between the input shaft and the E clutch hub causing the input shaft O-rings to become damaged resulting in an open E clutch circuit. Additional model information: 6.7L Diesel Engine 2022-2024 F-550 or F-600 F-Super Duty vehicles built on or before 15-May-2024 with over 5,000 miles (8,000km)
TSB 26-22562026-06-22. Service bulletin. This article supersedes TSB 25-2572 to update the Parts List to correct the part number LC3Z-6006-L to LC3Z-6781-A, remove the flex plate bolts AL3Z-6379-BA from the parts list as these bolts are in kit LC3Z-6781-A, update the claim quantity of the part number W709771-S440 to 9 pieces (F-650/F750-Engine Replacement), W706447-S437 and W715068-S437 to 4 pieces, W712861-S439 to 8 pieces(F-Super Duty Pickup And Chassis Cab-Engine Replacement) / 8 pieces (F-53 Motorhome/F-59 Stripped Chassis Cab/F-650,F750 Engine Replacement) / W714286-S442 to 4 pieces (F-Super Duty Pickup And Chassis Cab-Camshaft and Tappet Repair / F-Super Duty Pickup And Chassis Cab-Engine Replacement), include LC3Z-6020-A for the Engine replacement lists, include 1 fuel injector seal kit to the Camshaft and Tappet repair lists, include 4 pieces of W520114-S440 to the E Series-Camshaft and Tappet Repair list, and update the engine oil part numbers XO-5W30-Q1SP and CXO-5W30-LSP6. Some of the vehicles listed in the Model statement above may exhibit an upper engine ticking or tapping noise at idle. Customers may also report experiencing ro
SSM 547382026-04-14. Service bulletin. Some 2023-2025 Escape 1.5L/F-Super Duty/Transit vehicles may exhibit a lack of cooling from the heating, ventilation, and air conditioning (HVAC) system, which may be accompanied by abnormal rattling, grinding and/or squealing noises from the engine compartment. This may be due to damage to the air conditioning (A/C) compressor internal components and/or clutch assembly. Confirm ambient air temperature is above approximately 0°C (32.0°F). On the HVAC controls, set the temperature to full cold (not MAX A/C), select PANEL, set the fan speed to the highest setting and select the A/C button (indicator on). If the A/C compressor clutch engages and the A/C compressor is noisy, and/or the belt is slipping on the A/C compressor pulley or the A/C compressor is seized, install a new A/C compressor as indicated in Section 412-00 of the Workshop Manual (WSM). For claiming, use causal part 19703 and labor operation MT19700SSM up to 0.3 hours to check for a damaged compressor. If the compressor requires replacement, claim labor operations 19700A and 19700A4. Also claim available Service Labor Time Standards (SLTS) op
SSM 546782026-04-06. Service bulletin. Some 2021-2026 F-150 vehicles equipped with a 5.0L/5.2L engine, 2021-2025 F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis vehicles equipped with a 6.8L/7.3L engine and 2021-2025 E-Series/F-650/F-750 vehicles equipped with a 7.3L engine may exhibit a rattle/scraping noise upon startup that may remain after the engine is running. Workshop Manual (WSM),
SSM 545842026-02-17. Service bulletin. Some 2023-2026 F-Super Duty vehicles that require replacement of the heating ventilation and air conditioning (HVAC) module may have previously experienced a PMI that will not complete during installation. This may be due to a concern with the PMI application within the Ford Diagnosis and Repair System (FDRS) scan tool. To correct this condition, navigate to the FDRS application HVAC Programmable Module Installation (PMI). Click on the download button (if not already downloaded) or the refresh button on the right side of the application (if the application is already downloaded). Hover your mouse over the application name and verify the application version reads G2327867-5.0 or higher. Once the application is confirmed to be updated, run the HVAC PMI application.
TSB 25-25722025-12-01. Service bulletin. This article supersedes TSB 25-2322 to update the Service Procedure, Labor Operations and Parts List. Some of the vehicles listed in the Model statement above may exhibit an upper engine ticking or tapping noise at idle. Customers may also report experiencing rough engine performance, engine misfire, or a malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0301-P0308 in the powertrain control module (PCM). This may be due to camshaft and/or valve tappet having excess wear within the engine assembly.
SSM 543632025-11-13. Service bulletin. Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped with a 2.7L/3.5L (non hybrid)/6.8L/7.3L engine and 2021-2026 E-Series may exhibit a rattle/scraping noise from the bellhousing area on start-up. Workshop Manual (WSM), Section 303-00 Engine System - General Information > Diagnosis and Testing and 303-06 > Starting System has been updated to address this condition. Additionally, WSM, Section 303-01 > Removal and Installation > Engine to Transmission Spacer Plate has been added to address this condition. Refer to the revised WSM sections for normal diagnosis.
SSM 542692025-10-08. Service bulletin. Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped with a 2.7L,3.5L EcoBoost (non-hybrid), 3.5L Cyclone, 6.8L or 7.3L engine, may exhibit a rattle/scraping noise from the bellhousing area on start-up. Workshop Manual (WSM), Section 303-00 Engine System - General Information > Diagnosis and Testing and 303-06 > Starting System has been updated. Additionally, WSM, Section 303-01 > Removal and Installation > Engine to Transmission Spacer Plate has been added to address this condition. Refer to the revised WSM sections for normal diagnosis.
24L032025-09-03. Other. Certain 2020-2023 Model Year Multiple Vehicle Line Trucks Equipped with Diesel Engines - Particulate Matter (PM) Sensor Reimbursement
TSB 25-23412025-07-30. Service bulletin. Some of the vehicles listed in the Model statement above may exhibit a roaring fan noise from under the hood at highway speeds with either a hot or cold engine. This may be due to a condition where the engine cooling fan clutch remains fully engaged when not commanded.