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Service bulletin A002

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 id10169698
Published by NHTSA2020-01-04
Manufacturer's numberA002
Manufacturer's date2019-12-19
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE; EQUIPMENT

NHTSA's summary

Non-Safety Campaign - Chassis may experience vibration and knocking noise due to excessive wear of the rear side gear pinion teeth.

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, Equipment and accessories

Vehicles listed
KENWORTH T6802019
KENWORTH T8802019

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

Recalls for the same vehicles and component
20205512020-11-12. Structure

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
51-0132022-03-04. Service bulletin. Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primary antenna may experience this degradation
02-1602021-03-10. Service bulletin. Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
51-0082021-02-01. Service bulletin. T680 predictive cruise control(PCC) incompatibility with cummins engine.
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.
26-0352021-01-06. Service bulletin. Non-safety campaign: Vehicles equipped with an Eaton Endurant 12 speed transmission may experience transmission service lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Resolution is to update the transmission software and calibrations.
T0102021-01-06. Service bulletin. Non-Safety Campaign – Vehicles with PACCAR transmissions may experience transmission service lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Transmission software and shift calibration updates are available to resolve
37-0012020-09-03. Service bulletin. Fix-As-Fail – The Master Switch Module (MSM) may lose dash switch memory and functionality when the battery disconnect switch is cycled. An improved MSM is available to resolve the issue.
43-0662020-04-07. Service bulletin. DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank part number M86-6221-003**(TANK-DEF MEDIUM ASSY) and M86-6222-003**(TANK-DEF LARGE, ASSY). Resolution is to resolve the vibration on the tank cover by adding bottom tank washers.
32-0162020-04-03. Service bulletin. Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
52-0022020-01-04. Service bulletin. Fix-As-Fail - DEA5XX radio may be locked in the ON position or stuck in hi volume. A software update is available to resolve this issue.