WenmarOpen by Wenmar Pro

Service bulletin 43-066

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 id10173583
Published by NHTSA2020-04-07
Manufacturer's number43-066
Manufacturer's date2020-03-27
NHTSA componentSTRUCTURE

NHTSA's summary

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.

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 C5002015 to 2019
KENWORTH C5402015 to 2016
KENWORTH C5502015 to 2016
KENWORTH K1702016
KENWORTH K2702015 to 2018
KENWORTH K3002015, 2016
KENWORTH K3702015 to 2018
KENWORTH T1702015 to 2019
KENWORTH T2702015 to 2019
KENWORTH T3702015 to 2019
KENWORTH T4002015
KENWORTH T4402015 to 2019
KENWORTH T4702015 to 2017
KENWORTH T6002017 to 2019
KENWORTH T6602015 to 2019
KENWORTH T6802015, 2016, 2017, 2018, 2019
KENWORTH T8002015 to 2019
KENWORTH T8802015, 2016, 2017, 2018, 2019
KENWORTH W9002015 to 2019
KENWORTH W9902019
PACCAR C5402015 to 2016
PACCAR MX-112015 to 2017
PACCAR MX-132015 to 2017
PETERBILT 2102015, 2016, 2017, 2018
PETERBILT 2202015, 2016, 2017, 2018
PETERBILT 3202015, 2016, 2017, 2018, 2019
PETERBILT 3252015, 2016, 2017, 2018, 2019
PETERBILT 3302015, 2016, 2017, 2018, 2019
PETERBILT 3372015, 2016, 2017, 2018, 2019
PETERBILT 3482015, 2016, 2017, 2018, 2019
PETERBILT 3572015, 2016
PETERBILT 3652015, 2016, 2017, 2018, 2019
PETERBILT 3672015, 2016, 2017, 2018, 2019
PETERBILT 3782015, 2016
PETERBILT 3792015, 2016
PETERBILT 3822015, 2016
PETERBILT 3842015, 2016, 2017, 2018, 2019
PETERBILT 3852015, 2016
PETERBILT 3862015, 2016, 2017, 2018, 2019
PETERBILT 3872015, 2016
PETERBILT 3882015, 2016, 2017, 2018, 2019
PETERBILT 3892015, 2016, 2017, 2018, 2019
PETERBILT 389G2016 (the catalog's model; the bulletin names a series or trim of it)
PETERBILT 5202015 to 2016
PETERBILT 5202017, 2018, 2019
PETERBILT 5672015, 2016, 2017, 2018, 2019
PETERBILT 5792015, 2016, 2017, 2018, 2019
PETERBILT 5872015, 2016, 2017, 2018, 2019

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
20164822016-10-03. Structure
16V6330002016-08-31. STRUCTURE:BODY

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
02-2012026-05-20. Service bulletin. This recently published bulletin has been updated to include inspection procedures to assess if a hood is repairable.
02-2012026-05-06. Service bulletin. Model 567 Hood Strut Support Structure -A new procedure is now available to install hood structure reinforcements on Model 567 and 567 BEV chassis, improving performance and durability.
02-1782023-05-05. Service bulletin. Fix As Fail – Certain 579, and New Model 579 chassis that were manufactured with a Bendix forward looking camera system may experience bracket failure causing the bracket and camera to fall from the windshield.
32-0192023-03-01. Service bulletin. Fix As Fail – Chassis that were manufactured with certain battery cable routing brackets may experience rubbing or chafing of the battery cables.
04-0192022-05-05. Service bulletin. A roof fairing reinforcement kit increases structural support for one-piece 579 roof fairings that are experiencing fatigue from external forces such as reverse towing.
02-1612021-05-05. Service bulletin. Non-Safety Campaign- Chassis Fairings become loose and rattle.
51-0092021-02-01. Service bulletin. Predictive Cruise control (PCC) incomplete assembly and programming.
02-1362021-01-25. Service bulletin. Sleeper roof panels separating.
02-1582020-09-03. Service bulletin. Fix as Fail: Peterbilt has determined that certain model 348, 365, 367, 382, 384, 386, 388, 389, 567, 579, and 587 trucks, built between 4/13/2010 and 3/16/2020 and equipped with a flush mounted battery box, utilized rubber washers that could rub through and cause the aluminum box mounting tabs to rub directly on the steel frame brackets. This could result in cracked battery box mounting angles. Resolution is to add the reinforcement bracket(s) to affected vehicles.
14-0262020-08-05. Service bulletin. Fix as Fail: Peterbilt has designed an improved Secondary Chassis Module (SCM) bracket which is available for Models 567/579 built between January 01, 2018 and February 20, 2020. SCM brackets impacted by torsional stress may separate from the back of cab crossmember.