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Service bulletin 14-033

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 id10244493
Published by NHTSA2023-11-10
Manufacturer's number14-033
Manufacturer's date2023-10-18
NHTSA componentSTRUCTURE

NHTSA's summary

14-033: T680/T880/W990 Crossmember Fastener Torque Certain chassis may have under-torqued crossmember fasteners. Frame crossmember gusset fasteners must be re-torqued to prevent damage from frame vibration and movement.

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

Body and frame

Vehicles listed
KENWORTH T6802023
KENWORTH T8802023
KENWORTH W9902023

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

Recalls for the same vehicles and component
22V5820002022-08-04. STRUCTURE: UNDERRIDE; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
02-2062026-10-01. Service bulletin. Certain T680 Next Gen short hood chassis may be missing a bolt in the forward fairing.
04-0242024-06-04. Service bulletin. Campaign Certain T680 Next Gen fairings may have a loose or missing bushing that allows the rear partial fairing to rattle during operation. Parts and procedures are available to replace the pin on the fairing (both sides) with a bolt/spacer combination to reduce fairing rattle.
04-0222023-10-03. Service bulletin. Replacement fuel bezels are available for T680 Next Gen fairings. New bezels have updated attachments to prevent the bezel from becoming loose.
02-1742023-09-01. Service bulletin. Certain W990 hood-mounted engine air intake covers could loosen and rattle or separate from vehicle. New air intake covers are available with improved retention. Installation of new covers requires hood modification. Procedures are available for replacement of hood-mounted engine air intake covers.
02-1842023-09-01. Service bulletin. Certain W990 chassis may have hood hardware that could loosen. Additionally, some chassis may have hood rests that are too rigid causing excessive noise. Hood attaching hardware and hood rests will be replaced as necessary.