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Service bulletin TIB-34-049

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 id10052556
Published by NHTSA2013-08-15
Manufacturer's numberTIB-34-049
Manufacturer's date2013-06-18
NHTSA componentELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOFTWARE NEEDS TO BE UPDATED (P30-1011-108), DUE TO RECALLED REMOVAL AND DISABLING OF 13KWB, TO FIX PRE TRIP LIGHT INSPECTION FUNCTION ISSUE AND REINSTALL SWITCH. MODELS 2013 T680, T880. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Software, Wiring and fuses

Vehicles listed
KENWORTH T6802013
KENWORTH T8802013

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

Recalls for the same vehicles and component
17V4710002017-07-25. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; EXTERIOR LIGHTING
13V0270002013-01-25. ELECTRICAL SYSTEM:SOFTWARE; SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM

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
26-0372021-01-06. Service bulletin. Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
03-0712020-01-04. Service bulletin. Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures.
32-0102018-05-21. Service bulletin. Information only - Customer installed inverters may be wired incorrectly.
E0652013-04-15. Service bulletin. MX RC5-RC14 SOFTWARE UPDATE CAMPAIGN. SOFTWARE UPDATES ARE SAID TO BENEFIT THE ENGINES IN RC5 AND RC14 KENWORTH ENGINES. PACCAR/KENWORTH. *KB
TIB-34-0432012-09-29. Service bulletin. KENWORTH: CERTAIN TRUCKS HAVE ISSUES WITH DOOR MODULE WAKE UP, MIRROR JITTERINESS AND HEAD AND PARK LAMPS SWITCH POSITIONS TIED TOGETHER. MODEL 2012 T680. *PE