2018-2022 Mack Anthem (AN), Granite (GR/GU), & Pinnacle (CHU/CXU/PI) SC0423 Vehicle May Not Stay In Lane

April 1, 2021 NHTSA CAMPAIGN NUMBER: 21V233000

Vehicle May Not Stay In Lane/FMVSS 136

A vehicle that drifts out of its lane increases the risk of a crash.

 

NHTSA Campaign Number: 21V233

Manufacturer Mack Trucks, Inc.

Components ELECTRONIC STABILITY CONTROL

Potential Number of Units Affected 566

 

Summary

Mack Trucks, Inc. (Mack) is recalling certain 2018-2022 Anthem (AN), Granite (GR/GU), and Pinnacle (CHU/CXU/PI) vehicles equipped with “camelback” rear suspension and electronic stability control. The vehicles may not stay in their lane at certain speeds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 136, “Electronic Stability Control Systems on Heavy Vehicles.”

 

Remedy

Mack will notify owners, and dealers will reprogram the vehicle control units, free of charge. The recall began on April 21, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack’s number for this recall is SC0423.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

 

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NON-COMPLIANCE RECALL

Date	Number	Release
04.2021	SC0423	01

 

Non-Compliance Electronic Stability Control

AN, CHU, CXU, GR, GU, PI

 

RECALL INFORMATION

(April, 2021)

Mack has determined that certain model year 2018-2022 vehicles manufactured with “Camelback” rear suspension and electronic stability control do not meet the requirements of FMVSS136 testing.

Mack Trucks has not received any complaints or reports of vehicle crashes because of this noncompliance.

To ensure that these vehicles comply with the FMVSS136, Mack Trucks will require updated software be programmed into the MID 136 (anti-lock brake control module).

 

VEHICLES AFFECTED

Certain Mack North America vehicles manufactured between August 16, 2017 and January 21, 2021.

 

VEHICLE QUANTITY

There are 557 vehicles affected by this recall (557 U.S., 0 Canada).

 

Repair Instructions

1. Using Premium Tech Tool (PTT) operation 5931-07-03-20, configure ESP control unit to latest software.

a. The latest VCP software will need to be downloaded from Trucks Dealer Portal before configuration can take place. The latest file can be accessed via the information tab → Service → Software Download → Bendix VCP.

2. Re-Calibrate brake demand pressure sensors.

a. To perform a calibration procedure of the Brake Demand Sensor(s), ensure that the air system is fully charged. Apply ignition power and wait 30 seconds. Perform a full application of the service brake and hold for 5 seconds. Release the service brake.

 

Label & Certificate Instructions

NOTE 

A campaign completion label (part number 85152363) needs to be installed on truck if not previously installed. To signify the campaign has been completed, use a permanent marker (Such as a Sharpe ®) to write the recall number, completion date (MM/DD/YYY) and dealer code on the label. The label is to be applied to the inside of the passenger door as shown in the illustrations below.

 

Label Placement- Conventional Chassis Configuration

 

REIMBURSEMENT 

This repair is covered by an authorized Non-Compliance recall. Reimbursement is obtained through the normal claim handling process.
	UCHP Reimbursement
Claim Type (used only when uploading from the Dealer Business System)	40
Recall Status
Vehicle repaired per instructions	1-Modified per instructions
Labor Codes
Primary Labor Code:       5931-08-03-20 ESP Control Unit, Configuration  Additional work:       5931-07-03-05 Brake Demand Sensor, Calibration (ABS)	0.4   0.4
Causal Part	3092072
Authorization Number	C6624

 

Note: Dealers are to perform Non-Compliance Recall on all subject vehicles at no charge to the vehicle owner regardless of mileage, age of vehicle or ownership (original purchaser or subsequent purchasers). Whenever vehicles are subject to a Non-Compliance Recall are brought to your dealership for service, or taken into your dealership vehicle inventory, it is strongly recommended that every effort be made to perform the recall correction before the vehicle is sold or released to the owner.

 

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IMPORTANT SAFETY RECALL SC0423

NHTSA RECALL # 21V-233

 

DEAR MACK TRUCK OWNER:

 

This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.

 

Mack Trucks, Inc. has decided that a defect which relates to motor vehicle safety may exist in a certain 2018-2022 Anthem (AN), Granite (GR/GU), and Pinnacle (CHU/CXU/PI) vehicles equipped with “camelback” rear suspension and electronic stability control.

 

SAFETY DEFECT:

The vehicles may not stay in their lane at certain speeds.  As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 136, “Electronic Stability Control Systems on Heavy Vehicles.”

 

SAFETY RISK:

There is an increased risk of a vehicle related crash at certain speeds.

 

PRECAUTIONS YOU CAN TAKE:

There are no precautions you can take other than having your vehicle repaired  by a Mack Parts and Service Center.

 

TIME REQUIRED FOR THE REPAIR:

The time required to repair your vehicle is approximately 1 hour.

 

WHAT YOU SHOULD DO:

You should contact the nearest Mack Parts and Service Center and make an appointment. Mack dealers will reprogram the vehicle control units at no charge to you.

You can locate the closest Mack Parts and Service Center by going on line to https://www.macktrucks.com/ and selecting “Dealer & Service Locations” or by calling our toll-free number: 1-800-866-1177.

 

NOTICE REGARDING LEASED VEHICLES:

If you are a Lessor of vehicles subject to this Notice, you have an obligation under Federal Law to provide a copy of this Notice to all Lessees within 10 days of your receipt of this Notice.  Further, you must maintain a record, which identifies the Lessee(s) to whom you send a copy of this letter, the date you send this letter, and the Vehicle Identification Number(s) of the vehicle(s) that you have leased to that lessee.  For purposes of this Notice, the term Lessor means: a person or entity that is the owner, as reflected on the vehicle’s title, of any five or more leased vehicles (as defined in CFR Section 577.4), as of the date of notification by the manufacturer of the existence of a safety-related defect or non-compliance with a Federal Motor Vehicle Safety Standard in one or more of the leased motor vehicles.

 

OWNER RECALL RESPONSE CARD:

The enclosed “Notice of Vehicle Recall” identifies your vehicle.  If you no longer own the vehicle, please help us update our records by completing the “Vehicle Disposition Record” portion of the enclosed postage-free Notice of Mandatory Safety Campaign card and mailing it back to us.

 

ASSISTANCE/COMPLAINTS:

If your vehicle has not been repaired within a reasonable time after delivering it to a Mack Parts and Service Center, please contact:

Mack Trucks, Inc.
Regulatory Affairs Department,
P.O. Box 26115
Greensboro, NC 27402-6115
vtna.regulatoryaffairs@volvo.com

You may also submit complaints to the Administrator of the National Highway Traffic Safety Administration (1200 New Jersey Avenue, S.E., Washington DC 20590 or call the toll-free Auto Safety Hot Line at 1-888327-4236 (TTY: 1-800-424-9153), or go to https://www.safercar.gov if you believe that Mack has failed to remedy the defect without charge, or has failed to remedy the vehicle within 60 days of the owners first tender to obtain repair following the earliest time that parts are available.

 

PRE NOTIFICATION REMEDIES:

If you have previously paid for repairs as a result of this issue, you may be entitled to recovery of those expenses.

Submit copies of all documentation supporting your claim according to the rules specified in the “General Plan for Reimbursement of Prenotification Remedies” provided in this mailing.

 

We regret any inconvenience this may cause to your operation, but hope you will appreciate our sincere efforts to demonstrate Mack’s commitment to provide our customers with the best possible product.

 

MACK TRUCKS, INC.

 

SC0423_OWNER_LTR

April 2021

 

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MACK TRUCKS

RECALL ALERT

Subject:	Safety Recall SC0423, Non-Compliance Electronic Stability Control
Recall Number:	SRA-M423
Date:	April 16, 2021
Applicable Markets:	☒U.S. ☐Canada

 

Description

Mack Trucks, Inc. (Mack) is recalling certain 2018-2022 Anthem (AN), Granite (GR/GU), and Pinnacle (CHU/CXU/PI) vehicles equipped with “camelback” rear suspension and electronic stability control. The vehicles may not stay in their lane at certain speeds.  As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 136, “Electronic Stability Control

Systems on Heavy Vehicles.”  As a result, there is an increased risk of a vehicle related crash at those speeds.

The vehicles will be repaired by reprogramming the anti-lock brake control module.

 

Model and Model Years Affected

• Certain Mack 2018 – 2022 Anthem, Granite and Pinnacle vehicles.

 

Vehicle Quantities

• 557, All US.

 

Dealer Responsibilities

• The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act requires dealers to ensure that all new and used vehicles are free of safety defects and comply with all relevant safety standards at the time of delivery to the consumer.
• Dealers should make their personnel aware of the safety recall. In the event that a dealer has a vehicle included in the safety recall in their inventory to be sold, the condition must be corrected before releasing it to a customer.

 

Notification Release Schedule

• Vehicle list will be posted on the Trucks Dealer Portal on April 16, 2021
• Owner notification letters will be released on or before April 21, 2021

 

Contact

If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com.

 

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30 Affected Products

Vehicles

MAKE	MODEL	YEAR
MACK	ANTHEM (AN)	2018-2022
MACK	GRANITE (GR)	2018-2022
MACK	GRANITE (GU)	2018-2022
MACK	PINNACLE (CHU)	2018-2022
MACK	PINNACLE (CXU)	2018-2022
MACK	PINNACLE (PI)	2018-2022

 

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11 Associated Documents

Recall Quarterly Report #1, 2021-2

RCLQRT-21V233-1850.PDF 211.134KB

 

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Recall 573 Report- Amendment 2

RCLRPT-21V233-3974.PDF 214.044KB

 

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Remedy Instructions and TSB

RCRIT-21V233-1658.pdf 289.581KB

 

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Manufacturer Notices(to Dealers,etc)

RCMN-21V233-6590.pdf 120.77KB

 

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ISSUED Owner Notification Letter(Part 577)

RCONL-21V233-2460.pdf 135.228KB

 

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Recall 573 Report- Amendment 3

RCLRPT-21V233-6942.PDF 214.026KB

 

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Recall 573 Report – Amendment 1

RCLRPT-21V233-8063.PDF 214.044KB

 

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Noncompliance Notice 573 Report

RCLRPT-21V233-2097.PDF 213.956KB

 

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Recall Acknowledgement

RCAK-21V233-6582.pdf 652.238KB

 

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Recall Quarterly Report #3, 2021-4

RCLQRT-21V233-0789.PDF 211.322KB

 

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Recall Quarterly Report #2, 2021-3

RCLQRT-21V233-8832.PDF 211.233KB

 

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Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V233&docType=RCL

 

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Heavy Duty Truck Reprogramming

Description:

Designed for flexibility, the USB-Link 3 Wired Edition connects to your PC, tablet, or smartphone with a USB cable, allowing techs to directly connect to a device when working in the field or during signal interruptions.

Built to support the latest protocols (CAN FD, DoIP) and compatible with a wide range of OEM diagnostics software, the USB-Link 3 is our most advanced VCI to date, with the performance and technology you can rely on well into the future.

 

The USB-Link™ 3 comes with the following:

• Latching USB Cable (PN 404032)

• 9-Pin Deutsch Adapter, 1 Meter (PN 493128)

• J1962 Adapter (16-Pin OBD II, 1 Meter (PN 491113)

The USB-Link™ 3: Wireless is also available (PN 121052).

 

Specifications
Vehicle Network Protocol Support
CAN FD / J1939 FD / ISO15765 FD - 250K, 500K, 1M b/s with auto baud detection
Single wire CAN (SWCAN)
ISO 11898-3 Fault Tolerant CAN (FTCAN)
Diagnostics Over Internet Protocol (DoIP)
J1708
J1850 VPW (Class 2)
ISO PWM (SCP)
ISO 9141 / KWP2000 (ISO 14230) K/L line
ALDL 9600 and 8192 baud
ATEC 160 baud

Windows® Vehicle Communication API
Windows® Vehicle Communication API
RP1210 a/b/c
J2534 (2004 draft)
J2534-1 partial implementation (commercial vehicle focused)

Operating System Compatibility
iOS
Android™
Windows® 10, 11

Interfaces to Computing Platforms
USB 2.0 (vehicle-to-PC connectivity)
Bluetooth® 2.1 + EDR
Wi-Fi (dual band)

Compatible Software
Detroit Diesel Diagnostic Link
CAT Electronic Technician (On-Highway only)
Cummins Insite
International - ServiceMAXX Fleet Pro
Hino eXplorer
Volvo PTT
VCAD Elite Mack/Volvo
V-MAC Service Tools
Allison DOC® For PC-Service Tool - Protocols Supported: J1939, J1708/J1587, and J1850
Allison DOC® For Fleets (1000/2000) - Protocols Supported: J1939, J1850
Allison DOC® For Fleets (3000/4000) - Protocols Supported: J1939, J1708/J1587
Eaton ServiceRanger
Bendix ACom
WABCO Toolbox
Freightliner ServiceLink
International ABS
International DLB
International Intune
International IPC v2.02
PACCAR DAVIE4

 

121052

121054

 

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Daimler Truck

DiagnosticLink Order Site:

DiagnosticLink Direct Link:

https://diagnosticlink.nexiq.com/DTNA/Default.aspx

 

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Last update on 2026-05-23 / Affiliate links / Images from Amazon Product Advertising API

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