Use cautionVehicle recall · NHTSA · Published October 13, 2023
Mack 2024 Anthem Vehicles: ESC Software Error May Cause Crash Risk
Mack recalls certain 2024 Anthem trucks with a software error that may cause electronic stability control to fail, increasing crash risk. Owners will receive free software updates by December 3, 2023.
“Mack 2024 Anthem Vehicles: ESC Software Error May Cause Crash Risk.” GovInfoNow, updated August 19, 2026. https://govinfonow.com/recall/81822-mack-2024-anthem-vehicles-esc-software-error-may-cause-crash. Based on NHTSA recall #23V691000 (https://www.nhtsa.gov/recalls?nhtsaId=23V691000).
Mack Trucks, Inc. recalled certain 2024 Anthem and Pinnacle vehicles because a software error may render the electronic stability control inoperative, increasing crash risk. The National Highway Traffic Safety Administration announced the recall on October 13, 2023. Dealers will reprogram the control unit software free of charge.
How to tell if you have it
Mack Anthem (AN), 2024
Mack Pinnacle (PI), 2024
What to do
Dealers will reprogram the control unit software, free of charge. Owner notification letters are expected to be mailed December 3, 2023. Owners may contact Mack's customer service at 1-800-866-1177.
The hazard
Driving with an inoperative electronic stability control system can increase the risk of a crash. The hazard stems from a software programming error that may cause the electronic stability control (ESC) to be inoperative.
Context
GovInfoNow's records show Mack Trucks, Inc. has 74 other recalls on record since July 9, 2010. Recent similar recalls include a September 28, 2026 brake software issue for Pioneer PR and Anthem AN trucks and an August 6, 2026 loose steering gearbox risk for the TerraPro model. Other recent recalls of similar products include a September 18, 2026 electrical system recall for the REV Fleetwood Palisade (2026) and an April 9, 2026 electronic stability control software update for the 2026 Jeep Cherokee.
How to tell if you have this one
Check for 2024 Anthem trucks with the model code AN. The recall applies to vehicles sold in the U.S. starting from December 2023.
Brand
Mack
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Mack Customer Service
Call 1-800-866-1177 to confirm your vehicle is affected and schedule the software update.
Receive Free Software Update
Dealers will reprogram the control unit software for free by December 3, 2023.
December 3, 2023
Official remedy
What NHTSA says to do
Dealers will reprogram the control unit software, free of charge. Owner notification letters are expected to be mailed December 3, 2023. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0450.
How this recall unfolded
Recall timeline
1NHTSA received the defect report
2Owner letters expected (expected, per the notice)
Dates from the agency record only; steps without a date are left out.
Take action
Contact Mack
We’ve drafted a message you can send Mack to request your refund or repair — edit it as you like.
Subject: Recall 23V691000 — Mack 2024 Anthem Vehicles: ESC Software Error May Cause Crash Risk
Hello,
I own a Mack 2024 Anthem Vehicles: ESC Software Error May Cause Crash Risk that is covered by recall 23V691000 from Mack.
The official recall notice states: Dealers will reprogram the control unit software, free of charge. Owner notification letters are expected to be mailed December 3, 2023. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0450.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 19, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.