OFFICIAL CAMPAIGN FILE

NHTSA campaign 21V233000

NHTSA campaign 21V233000 covers 22 published year-and-model reports from 1 makes in this index and lists 557 potentially affected units campaign-wide. VIN eligibility must be checked separately.

Report received April 1, 2021 · Snapshot September 21, 2026

01 / DEFECT RECORD

What NHTSA campaign 21V233000 says

NHTSA campaign 21V233000 identifies ELECTRONIC STABILITY CONTROL (ESC) and states that A vehicle that drifts out of its lane increases the risk of a crash.

Defect 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.".

Consequence summary

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

02 / CORRECTIVE ACTION

Remedy for NHTSA campaign 21V233000

For NHTSA campaign 21V233000, the filed corrective action says: 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.

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.

Owner notification: April 21, 2021
Filing manufacturer: Mack Trucks, Inc.
Component groups: ELECTRONIC STABILITY CONTROL (ESC)

03 / PUBLISHED VEHICLES

Vehicles listed under NHTSA campaign 21V233000

RecallRoad links 22 year-and-model reports associated with NHTSA campaign 21V233000; the list reflects published source rows, not individual VIN coverage.