NHTSA campaign 26V261000 · Mack campaign SC0494
Mack Recall 26V-261: Rear Brake Modulators May Short Circuit
NHTSA recall 26V261000 (Mack campaign SC0494) was reported by Mack Trucks, Inc. on April 23, 2026, with 2,772 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mack PIONEER PR (4) and Mack ANTHEM AN (4) for model years 2025–2027. Owners were notified on June 8, 2026, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 26V261000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 26V261000 (also written 26V-261 or 26V261)
- Filed by
- Mack Trucks, Inc.
- Mack campaign number
- SC0494
- Report received
- Potentially affected
- 2,772 vehicles (per NHTSA)
- Component
- Service Brakes, Air — Antilock — Control Unit/Module
- Owners notified
Repair completion: 59.99% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 26V261000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Mack
Mack ANTHEM AN (4)
Mack PIONEER PR (4)
NHTSA's recall notice
As NHTSA's recall record states it for campaign 26V261000.
Defect description
Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-2027 Anthem (4) vehicles. The rear brake modulators may have unprotected electrical connectors that can short circuit and lead to a loss of the anti-lock brake system (ABS) and electronic stability control (ESC).
Safety consequence
A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
Manufacturer remedy
Dealers will inspect the rear brake modulator electrical connectors, install a protective cover, and replace the rear brake modulators, as necessary, free of charge. Owner notification letters were mailed June 8, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0494. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning April 30, 2026.
Sources
Official NHTSA notice for recall 26V261000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.