Mack Trucks Recall for Anthem and Pioneer Models

Source: NHTSA · United States

Mack Trucks, Inc. is recalling certain 2025-2027 Pioneer and 2026-2027 Anthem vehicles due to potential short circuits in rear brake modulators that could lead to loss of anti-lock brakes and electronic stability control.

What this NHTSA vehicle recall tells you, and what most readers miss

This notice was issued by NHTSA on May 4, 2026 and geographically references United States. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken — "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to — Vehicle Recalls — determines the regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NHTSA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action — a single localized NHTSA vehicle recall is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (recall, product-safety, cpsc, trucks) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

What Happened

Mack Trucks, Inc. is recalling certain vehicles because the rear brake modulators may have unprotected electrical connectors that can short circuit, resulting in a loss of the anti-lock brake system (ABS) and electronic stability control (ESC).

Which Products Are Affected

The affected products include 2025-2027 Pioneer (4) and 2026-2027 Anthem (4) vehicles. A total of 11,685 units are potentially affected. The NHTSA Campaign Number is 26V261000. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning April 30, 2026.

What You Should Do

Consumers should have dealers inspect the rear brake modulator electrical connectors, install a protective cover, and replace the rear brake modulators if necessary, all free of charge. Owner notification letters are expected to be mailed on June 22, 2026. Owners may contact Mack's customer service at 1-800-866-1177, and Mack's number for this recall is SC0494.

Why This Matters

A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury, highlighting potential safety concerns for vehicle operators.

Source

This recall information is from the National Highway Traffic Safety Administration (NHTSA). More details can be found at NHTSA.gov using the campaign number 26V261000.

Original source: NHTSA Official Notice ↗

Related Vehicle Recalls

All Vehicle Recalls →

Frequently Asked Questions

Common questions about this NHTSA vehicle recall.

What is this NHTSA vehicle recall about?
Mack Trucks, Inc. is recalling certain 2025-2027 Pioneer and 2026-2027 Anthem vehicles due to potential short circuits in rear brake modulators that could lead to loss of anti-lock brakes and electronic stability control.
Which agency issued this alert?
This alert was issued by NHTSA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects United States. Check with NHTSA for the most current geographic scope.
Where can I find more Vehicle Recalls updates?
Browse the full Vehicle Recalls feed on Areazine at areazine.com/recalls/vehicles/ for the latest updates from NHTSA and other agencies.