Technical Service Bulletin SSM 50673 — 2021 FORD F-350 SD
ENGINE AND ENGINE COOLING
Bulletin Details
| TSB ID | SSM 50673 |
| Manufacturer | |
| Vehicle | 2021 FORD F-350 SD |
| Component | ENGINE AND ENGINE COOLING |
| Communication Date |
Bulletin Summary
Some 2020-2022 F-Super Duty vehicles equipped with a 6.7L engine may exhibit a cooling fan with excessive noise or stays on continuously. The Workshop Manual (WSM), Section 303-03 Engine Cooling > Diagnosis and Testing > Cooling Fan Control, pinpoint test (PPT) AH for 2021-2022 and Powertrain Control/Emissions Diagnosis (PC/ED) Manual PPT AH for 2020 have been updated to improve diagnostics and reduce unnecessary cooling fan clutch replacements.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2021 FORD F-350 SD
SSM 51279
ELECTRICAL SYSTEM
SSM 51265
EQUIPMENT
SSM 51147
EXTERIOR LIGHTING
TSB 22-2349
STRUCTURE
SSM 50564
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
SSM 50519
ELECTRICAL SYSTEM
TSB 22-2044
ELECTRICAL SYSTEM
SSM 50434
POWER TRAIN
SSM 50322
ELECTRICAL SYSTEM
SSM 50259
POWER TRAIN:AUTOMATIC TRANSMISSION