Safety Recall NHTSA · 21V233000 Reported April 1, 2021

Vehicle may not stay in lane/fmvss 136

Mack Trucks, Inc. · Electronic Stability Control (esc) · 557 vehicles potentially affected

NHTSA ID
21V233000
Manufacturer Campaign
SC0423
Manufacturer
Mack Trucks, Inc.
Component
Electronic Stability Control (esc)
Vehicles Affected
557
Recall Type
Vehicle
Report Received
April 1, 2021
Completion Rate
77.38

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."

Safety Consequence

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

Corrective Action

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.

What you should do

  1. Look up your VIN at nhtsa.gov/recalls to confirm this recall applies to your vehicle.
  2. Contact an authorized Mack Trucks, Inc. dealer and reference recall ID 21V233000 or campaign SC0423.
  3. Schedule the free repair. By federal law, the manufacturer must remedy the defect at no cost.
View Official NHTSA Notice →
Related

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FAQ: Recall 21V233000

Your rights, the repair process, and what each field on this page means.

What is recall 21V233000?

NHTSA recall 21V233000 was issued by Mack Trucks, Inc. on April 1, 2021. It addresses: Vehicle may not stay in lane/fmvss 136. The recall affects approximately 557 vehicles, with the defect involving the Electronic Stability Control (esc) component.

How do I get this recall repaired?

Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 21V233000 or the manufacturer campaign number SC0423. Under federal law, the repair is completely free regardless of vehicle age or owner history.

Is my vehicle included in this recall?

The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.

How long do I have to get a recall repair done?

There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.

Where does the data on this page come from?

All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.