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Service bulletin 34-085

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 id10172036
Published by NHTSA2020-03-04
Manufacturer's number34-085
Manufacturer's date2020-02-28
NHTSA componentVEHICLE SPEED CONTROL; ELECTRICAL SYSTEM

NHTSA's summary

Information Only: Vehicles may have the connector seal on the wheel speed sensor incorrectly installed, which may lead to sensor corrosion.

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

Electrical system, Throttle and cruise control

Vehicles listed
PETERBILT 2012005
PETERBILT 2102008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 2202015, 2016, 2017, 2018
PETERBILT 3202004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3252008
PETERBILT 3252010, 2011
PETERBILT 3252014, 2015, 2016, 2017, 2018
PETERBILT 3302004, 2005
PETERBILT 3302007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3352005, 2006, 2007, 2008, 2009, 2010, 2011
PETERBILT 3362008
PETERBILT 3372008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3402006, 2007, 2008, 2009, 2010, 2011
PETERBILT 3482008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3572004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
PETERBILT 3622004, 2005
PETERBILT 3652004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3672004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3722004
PETERBILT 3782004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
PETERBILT 3792004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
PETERBILT 379K2007, 2008 (the catalog's model; the bulletin names a series or trim of it)
PETERBILT 3822006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
PETERBILT 3842007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3852004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
PETERBILT 3862004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3872004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
PETERBILT 3882004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 3892004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 389G2016 (the catalog's model; the bulletin names a series or trim of it)
PETERBILT 389K2008, 2009 (the catalog's model; the bulletin names a series or trim of it)
PETERBILT 389K2014 (the catalog's model; the bulletin names a series or trim of it)
PETERBILT 3982008
PETERBILT 5202004 to 2016
PETERBILT 5202017, 2018
PETERBILT 5672006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 5792006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT 5872006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
PETERBILT MODEL 2202008 to 2014

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

Recalls for the same vehicles and component
21V00N0002021-12-29. ELECTRICAL SYSTEM:WIRING
20200902020-03-05. Electrical
20V1300002020-03-04. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
20191992019-04-24. Electrical
19V2820002019-04-09. ENGINE; ELECTRICAL SYSTEM
18V0920002018-02-02. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
20173742017-07-27. Electrical
17V4710002017-07-25. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; EXTERIOR LIGHTING
16V4260002016-06-10. ELECTRICAL SYSTEM:IGNITION:MODULE
15V5970002015-09-24. ELECTRICAL SYSTEM:IGNITION:MODULE; ENGINE AND ENGINE COOLING:ENGINE

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
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E3262026-05-06. Emissions. EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
E3242025-09-03. Service campaign. "Campaign New and improved software is now required for chassis equipped with an Engine Model Year 2016 PACCAR MX-13 engine to maintain DEF sensor performance and ensure compliance with emissions standards.
51-0162024-06-05. Service bulletin. Information Only Dealers/body builders installing lift gates onto Peterbilt Model 220EV BEV chassis must use 24-volt lift gate systems 12-volt lift gate systems are not compatible with vehicle electrical systems. Installation of a 12V lift gate on the 24V system could result in the following: * Accelerated wear on the 12V batteries. * Excessive current load on 12V system wiring. * Lights may dim when lift gate is in operation. * Lift gate may operate more slowly..
28-0012023-10-03. Service bulletin. For all Peterbilt chassis equipped with an air shifted PTO. Oil from the air shift cover of the PTO may leak into the air line, causing the EOA solenoid to become inoperative.
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.
21PBN2022-12-05. Service bulletin. 21PBN – LNG/CNG Methane Detecti on System Will Not Warn Operator if System Loses Power – NHTSA ID:21V00N, TC: 2021-793
34-0932022-12-05. Service bulletin. 34-093 Model 389 78-inch Sleeper 12V Power Port Supplier Change
23-0052022-11-04. Service bulletin. Clutch pedal linkage lubrication service interval information is missing from the Service manual for Model 365, 367, and 389 chassis.