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Service bulletin TIB-E-087

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 id10056024
Published by NHTSA2014-08-16
Manufacturer's numberTIB-E-087
Manufacturer's date2014-06-30
NHTSA componentENGINE

NHTSA's summary

KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A MAX GOVERNED CC SPEED, ON SOME TRUCKS, WAS PROGRAMMED INCORRECTLY AND LIMITS MAXIMUM DEFAULT SPEED TO 63 MPH. *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

Engine

Vehicles listed
KENWORTH C5002014
KENWORTH C5502014
KENWORTH K3002014
KENWORTH T1702014
KENWORTH T2702014
KENWORTH T3702014
KENWORTH T4402014
KENWORTH T4702014
KENWORTH T6602014
KENWORTH T6802014
KENWORTH T7002014
KENWORTH T8002014
KENWORTH T8802014
KENWORTH W9002014

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
P0012026-09-29. Service bulletin. "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."
03-087 (E295)2023-03-06. Service bulletin. Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor strategy is developed.
E2962022-08-30. Service bulletin. Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
21KWD2021-07-06. Service bulletin. Information Only – C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast the end of the 2021 calendar year without particulate matter (PM) sensors installed .
E2712021-07-06. Service bulletin. An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
32-0182021-03-10. Service bulletin. Non-Safety Campaign – Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
27-0262021-02-01. Service bulletin. Eaton ultrashift plus excessive engine over-speed lamp on.
43-0632020-01-04. Service bulletin. Emissions Campaign – The Engine Overspeed lamp may illuminate during a smoke opacity test. A software update is available to resolve the issue.
01-0712019-12-04. Service bulletin. Fix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine. An improved suction line has been released that removes stress transferred to the evaporator core.
01-0752019-12-04. Service bulletin. Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.