Safety Recall 23PBJ: 536, 537, 548, and 567 Delayed Trailer Brake Release
Number

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23PBJ / 23V661 / 2023-524

Supplier
Peterbilt

Description
536, 537, 548, and 567 Delayed Trailer Brake Release

Date
12/22/2023

What’s New
Safety Recall
Certain 536, 537, 548, and 567 chassis built with 2.1m Medium Duty End of Frame Trailer Connections and Tractor Protection Valves may not meet the
standard trailer brake release timing requirements by 0.5 seconds. A delay in the trailer brake release may create momentary instability to the trailer and
increase the risk of a crash.

Introduction
536, 537, 548, and 567 chassis built with 2.1m Medium Duty End of Frame Trailer Connections and Tractor Protection Valves may not meet trailer brake
release timing requirement of FMVSS 121. Trailer brake release timing may exceed the standard by 0.5 seconds. A delay in the trailer brake release may

create momentary instability to the trailer and increase the risk of a crash. Truck and trailer brake application timing is not affected, nor is brake
performance affected.

Situation
141 chassis (139 US and 2 Canada) model year 2020-2024 536, 537, 548, and 567 chassis built from 7/31/2019 through 9/8/2023 with 2.1m Medium Duty
End of Frame Trailer Connections and Tractor Protection Valves.

Resolution
Safety Recall:
Service all chassis affected that enter your dealership, even if the customer has no issue with the chassis.
1. Review the attached chassis list for your dealer code and schedule your customer(s) for service if their chassis is on the list.
2. In Service Management, select Campaign 23PBJ to add it to the case. If the unit is released back into service without performing the repair, make
sure to also release the Campaign in Service Management.
3. If you are not using Service Management to start repair orders, review SIR for “Complete” next to the 23PBJ Campaign code prior to performing this
repair.
4. Follow the Repair Procedures linked in the “Procedure” section of this bulletin.

Federal Law
​It is a violation of Federal law for a dealer to sell or lease new vehicles covered by this recall until the defect or noncompliance has been corrected.

Warranty
There is no time or mileage limit for this recall. Peterbilt will pay for parts at dealer net plus applicable mark-up and labor:
Determine the chassis configuration by finding the chassis number of the vehicle you are repairing in the Chassis List attached in “Links” section.
1.2 hours to complete repairs per Configuration 1. Use Recommended Repair 23PBJA.
2 hours to complete repairs per Configuration 2. Use Recommended Repair 23PBJB.
For repair of progressive damage directly related to this Safety Recall, file a separate long form claim. A Recommended Repair for standard labor

must be filed first.
File the claim within 7 days in accordance with the Warranty Policy.
Take-Off Parts Disposition: Destroy take-off parts 30 days after claim is paid.

​​​​PRWS CLAIM CODING
​ ampaign
C
Campaign
​23PBJ
Code:
Type:​

Safety Recall​

Claim
​Truck ​Repair Type: ​Proactive
Category:
Customer
Concern ​151
Code:

​Causal Code: ​30

Corrective
Action
​12
Code:

​ esponsibility
R
​Camp
Code:

​013Failure
010- ​Causal Part:
Location:
016
Supplier
Code:

​N/A

​SRT Code:

​G90-1287-004
Determine the
chassis
configuration by
finding the chassis
number of the
vehicle you are
repairing in the
attached Chassis
List in “Links”
section.
B23-30A 1.2
Hours

Configuration
1
B23 30B 2.0
Hours
Configuration
2

Procedure
Please follow your dealership's safety procedures and precautions to ensure the vehicle can be safely repaired and maintained.
Repair procedures can be found in the link below.
23PBJ Repair Procedure

Parts
Parts are available from PACCAR Parts.
NOTE
​ ir Tube length varies depending on chassis
A
configuration. Please measure the required
length needed to perform repair prior to
beginning repairs.

​​​​Configuration 1 Parts List
​Quantity

​ PD Part
P
​Description
Number

Source
From​

​1

​ 38G
10210608

FITTING-90
​PACCAR
ELBOW MALE
Parts
NPT​

​1

​ 38G
10230608

F​ ITTINGSTRAIGHT #6 PACCAR
MALE NPT TO Parts
#8 J2494

​s
A
needed
per

​ 2703
08150100

T​ UBING-AIR ​DSP (30
BRAKE GREEN DAYS
1/2 OD 100FT

chassis
(40-55 ft)
​15

OR
LEAD
EQUIVALENT TIME)
T​ IE-CABLE
50LB 15.5"
PACCAR
​CT05317
BLK OR
Parts
EQUIVALENT

​N/A

S​ UPER LUBE
0.4 FL. OZ.
RUBBER
​LOCALLY
LUBRICANT
SOURCED
OR
EQUIVALENT

​1

​N/A

L​ OCTITE 401
​LOCALLY
0.1 FL. OZ. OR
SOURCED
EQUIVALENT

​1

​N/A

E​ LECTRICAL
​LOCALLY
TAPE OR
SOURCED
EQUIVALENT

​1

Configuration 2 Parts List
​Quantity

​ PD Part
P
Description​
Number

Source
From​​

​2

​ 38G
10210608

​1

​ DAPTERA
​ P2335 PIPE STL
A
PLUG SQH

​1

​ 38G
10210808

FITTINGMALE 90DEG ​PACCAR
#8 NPT TO #8 Parts
J2494​

​s
A
needed
per

​ 2703
08130100

T​ UBING​DSP
AIRBRAKE
ORANGE 1/2

F​ ITTING-90
​PACCAR
ELBOW MALE
Parts
NPT
​ ACCAR
P
Parts

chassis
(40-55 ft)

OD 100 FT
OR
EQUIVALENT

​s
A
needed ​3270per
0816chassis 0100
(40-55 ft)

T​ UBINGAIRBRAKE
BLUE 1/2 OD
100 FT OR
EQUIVALENT

​ SP (23
D
DAYS
LEAD
TIME) /
LOCALLY
SOURCED

T​ IE-CABLE
50LB 15.5"
​ T05317
C
BLK OR
EQUIVALENT

​ ACCAR
P
Parts /
LOCALLY
SOURCED

​15

​2

​1

​1

​N/A

S​ UPER LUBE
0.4 FL. OZ.
RUBBER
​LOCALLY
LUBRICANT SOURCED
OR
EQUIVALENT

​N/A

L​ OCTITE 401
​LOCALLY
0.1 FL. OZ. OR
SOURCED
EQUIVALENT

​N/A

E​ LECTRICAL
LOCALLY
TAPE OR
SOURCED
EQUIVALENT

Links
23PBJ Bulletin Chassis list
23PBJ Repair Procedure
23PBJ US Safety Recall Customer Letter
23PBJ CA Safety Recall Customer Letter
Traduction de 23PBJ Canada Customer Letter

Le 20 décembre 2023

IMPORTANT RAPPEL DE SÉCURITÉ

Cet avis concerne votre véhicule. Votre (vos) NIV(s) se trouve(nt) au bas ou au verso de la présente
Objet : Rappel de sécurité 23PBJ : Délai dans l’application des freins de la remorque sur modèles 536/537/548/567
Numéro de rappel de Transport Canada : 2023-524
DATE D’EXPIRATION : AUCUNE
Cher client Peterbilt,
Le présent avis vous est envoyé conformément aux exigences de la Loi sur la sécurité automobile. La présente a pour but de vous informer
que votre véhicule est susceptible d’avoir un défaut qui pourrait porter atteinte à la sécurité humaine.
Peterbilt a constaté qu’une défectuosité reliée à la sécurité des véhicules automobiles est présente dans certains véhicules de modèles 536,
537, 548 et 567 des années 2020 à 2024, fabriqués entre le 31/07/2019 et le 08/09/2023, équipés de branchements de classe moyenne de
2.1m à la traverse de la remorque, de soupapes de protection de la remorque et de flexibles de liaison. Les véhicules concernés ne se
conforment pas aux normes de sécurité des véhicules automobiles canadiens (CMVSS) no. 121, "Systèmes de freins pneumatiques".
Le chronométrage de l’application des freins de la remorque peut être retardé, ce qui pourrait créer une instabilité de la remorque et
augmenter le risque d’accident. Le chronométrage de l’application des freins du camion et de la remorque n’est pas affecté, pas plus que ne
l’est la performance de freinage du camion.
Quel est le problème ?

Le chronométrage de l’application des freins de la remorque peut être retardé.

Que fera votre concessionnaire ?

Les concessionnaires remplaceront les raccords de la soupape de protection du tracteur, de
la soupape de modulation de la remorque, de la soupape de frein au pied ainsi que la durite
qui relie celles-ci.

Que devriez-vous faire ?

Communiquer immédiatement avec votre concessionnaire afin de prendre rendez-vous pour
la réparation.

Peterbilt Motors Company a mis en place ce rappel afin de remédier au problème, sans frais. Veuillez communiquer avec votre
concessionnaire Peterbilt afin de prendre rendez-vous pour ces services. Pour trouver votre concessionnaire Peterbilt veuillez consulter
Dealer Locator sur www.Peterbilt.com ou balayer le code à barres. Au moment de communiquer avec votre concessionnaire Peterbilt, vous
référer au numéro de rappel de sécurité, au numéro de Transport Canada ainsi qu’au(x) NIV(s) listé(s) à la présente. Cette réparation peut
nécessiter jusqu’à 2 heures de main-d’œuvre selon la disponibilité du concessionnaire
Si vous avez déjà fait effectuer cette réparation avant la réception de la présente, vous pourriez être admissible à un remboursement de vos
frais pour avoir remédié sans préavis au problème associé à ce rappel. Des reçus pour les pièces et/ou la main-d’œuvre sont requis afin
d’envisager un remboursement. Communiquez avec votre concessionnaire Peterbilt local pour les détails.
Si vous avez besoin de plus d’information au sujet de ce rappel ou rencontrez des difficultés à prendre rendez-vous pour cette réparation,
veuillez communiquer avec le département de l’expérience client de Peterbilt sur PB.Tech.Pubs.Dept@paccar.com.
Pour de l’information additionnelle au sujet de ce rappel, vous pouvez communiquer avec Transport Canada au 1-800-333-0510.
La loi fédérale nécessite de tout bailleur de véhicules qui reçoit cet avis de rappel d’en faire parvenir une copie à toute personne ayant loué un
véhicule et ce, dans un délai de dix jours. Si ce véhicule ne vous appartient plus, nous apprécierions que vous nous fassiez part du nom du
nouveau propriétaire. Veuillez faire parvenir tout information relative au nouveau propriétaire et son adresse à
PBDiv.Warranty.Docs@paccar.com.
Nous nous excusons pour tout inconvénient causé par cette procédure préventive et vous remercions de votre participation afin d’aider
Peterbilt à offrir les plus hauts niveaux de satisfaction de la clientèle et d’expertise de service.
Nous apprécions votre entreprise ainsi que votre constante fidélité envers Peterbilt et son réseau de concessionnaires. Les produits Peterbilt
se distinguent en étant leader de l’industrie en matière de qualité, performance et fiabilité; et nous vous remercions de faire d’un Peterbilt votre
camion préféré.
Salutations,

Michelle Ponsoby
Directrice de l’expérience client
Peterbilt Motors Company

Select the date.

IMPORTANT SAFETY RECALL

This notice applies to your vehicle. Your VIN(s) can be found on the bottom or back of this page.
Subject:

Safety Recall 23PBJ: 536/537/548/567 Delayed Trailer Brake Release
NHTSA Recall number: 23V-661
EXPIRATION DATE: NONE

Dear Peterbilt Customer,
This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act.
Peterbilt has decided that a defect which relates to motor vehicle safety exists in certain model year 2020-2024 536, 537, 548 and 567
vehicles built from 07/31/2019 through 09/08/2023 that are equipped with 2.1m medium duty end of frame trailer connections, tractor
protection valves and connecting hoses. Affected vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) No. 121, “Air
Brake Systems”.
The timing of the trailer brake release may be delayed which can create instability to the trailer and increase the risk of a crash. Truck and
Trailer brake application timing is not affected, nor is truck brake performance affected.
What is the problem?

The timing of the trailer brake release may be delayed.

What will your dealer do?

Dealers will replace the fittings on the tractor protection valve, trailer modulator valve, foot
valve and the hose between them.

What should you do?

Contact your dealer immediately to schedule an appointment.

Peterbilt Motors Company has initiated this recall to remedy the issue with no charge to you. Please contact your Peterbilt dealer to
schedule an appointment for these services. To find your Peterbilt dealer, please visit the Dealer Locator at www.Peterbilt.com or scan the
QR code. When contacting your Peterbilt dealer, reference the Safety Recall number and the NHTSA number. This repair may take up to 2
hours of labor depending on dealer scheduling.
If you had this repair performed before receiving this letter, you may be eligible to receive reimbursement for the cost of obtaining a prenotification remedy of the problem associated with this recall. Receipts for parts and/or labor are required for consideration of
reimbursement. Contact your local Peterbilt dealership for details.
If you require further information about this recall or experience any difficulty in making arrangements for this repair, please contact the
Peterbilt Customer Experience Department at PB.Tech.Pubs.Dept@paccar.com.
If you conclude that Peterbilt has not enabled you to remedy this defect in a reasonable time and without charge, you may submit a
complaint to: Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590, or call
the toll free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov.
Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten
days. If you no longer own this vehicle, we would appreciate your advising us of the new owner. Please send all known ownership and
address changes to PBDiv.Warranty.Docs@paccar.com.
We apologize for any inconvenience this preventive procedure may cause and thank you for your participation in helping Peterbilt provide
the highest levels of customer satisfaction and service expertise. We value your business and appreciate your ongoing loyalty to Peterbilt
and its dealer network. Industry-leading quality, performance and reliability are hallmarks of Peterbilt products, and we thank you for
making Peterbilt your truck of choice.
Sincerely,

Michelle Ponsonby
Director of Customer Experience
Peterbilt Motors Company

Select the date.

IMPORTANT SAFETY RECALL

This notice applies to your vehicle. Your VIN(s) can be found on the bottom or back of this page.
Subject:

Safety Recall 23PBJ: 536/537/548/567 Delayed Trailer Brake Release
Transport Canada Recall:2023-524
EXPIRATION DATE: NONE

Dear Peterbilt Customer,
This notice is sent to you in accordance with the requirements of the Motor Vehicle Safety Act. This is to inform you that your vehicle may
contain a defect that could affect the safety of a person.
Peterbilt has decided that a defect which relates to motor vehicle safety may exist in certain model year 2020-2024 536, 537, 548, and 567
vehicles built from 07/31/2019 through 09/08/2023 that are equipped with 2.1m medium duty end of frame trailer connections, tractor
protection valves and connecting hoses. Affected vehicles fail to conform to Canada Motor Vehicle Safety Standard (CMVSS) No. 121, “Air
Brake Systems”.
The timing of the trailer brake release may be delayed which can create instability to the trailer and increase the risk of a crash. Truck and
Trailer brake application timing is not affected, nor is truck brake performance affected.
What is the problem?

The timing of the trailer brake release may be delayed.

What will your dealer do?

Dealers will replace the fittings on the tractor protection valve, trailer modulator valve, foot
valve and the hose between them.

What should you do?

Contact your dealer immediately to schedule an appointment for repair.

Peterbilt Motors Company has initiated this recall to remedy the issue with no charge to you. Please contact your Peterbilt dealer to
schedule an appointment for these services. To find your Peterbilt dealer, please visit the Dealer Locator at www.Peterbilt.com or scan the
QR code. When contacting your Peterbilt dealer, reference the Safety Recall number, Transport Canada number, and VIN(s) listed in this
letter. This repair may take up to 2 hours of labor depending on dealer scheduling.
If you had this repair performed before receiving this letter, you may be eligible to receive reimbursement for the cost of obtaining a prenotification remedy of the problem associated with this recall. Receipts for parts and/or labor are required for consideration of
reimbursement. Contact your local Peterbilt dealership for details.
If you require further information about this recall or experience any difficulty in making arrangements for this repair, please contact the
Peterbilt Customer Experience Department at PB.Tech.Pubs.Dept@paccar.com.
For additional information about the recall, you can contact Transport Canada at 1-800-333-0510.
Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten
days. If you no longer own this vehicle, we would appreciate your advising us of the new owner. Please send all known ownership and
address changes to PBDiv.Warranty.Docs@paccar.com.
We apologize for any inconvenience this preventive procedure may cause and thank you for your participation in helping Peterbilt provide
the highest levels of customer satisfaction and service expertise.
We value your business and appreciate your ongoing loyalty to Peterbilt and its dealer network. Industry-leading quality, performance and
reliability are hallmarks of Peterbilt products, and we thank you for making Peterbilt your truck of choice.
Sincerely,

Michelle Ponsonby
Director of Customer Experience
Peterbilt Motors Company