Mack Anthem (An), Mack Anthem An (4), Mack Granite (Gr), Mack Pinnacle (Pi/Pn), Mack Pioneer Pr (4), model years 2026 to 2027. Filed by Mack Trucks, Inc. and reported to NHTSA on 28 May 2026. 644 vehicles potentially affected.
What the notice says Mack Trucks, Inc. (Mack) is recalling certain 2026 Anthem (AN), 2026-2027 Pioneer PR (4), Pinnacle (PI/PN), Granite (GR), and 2027 Anthem AN (4) vehicles. The wheel lug nuts may loosen and allow the wheel to detach.
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Mack's own number for this recall: SC0495. That is the number on the owner letter and on the dealer paperwork. 26V351 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 26V351 cover?
- Mack Anthem (An), Mack Anthem An (4), Mack Granite (GR), Mack Pinnacle (Pi/PN), Mack Pioneer PR (4), model years 2026-2027.
- What is wrong with them?
- Mack Trucks, Inc. (Mack) is recalling certain 2026 Anthem (AN), 2026-2027 Pioneer PR (4), Pinnacle (PI/PN), Granite (GR), and 2027 Anthem AN (4) vehicles. The wheel lug nuts may loosen and allow the wheel to detach.
- What can happen if it is not put right?
- Wheel detachment can cause a loss of vehicle control or create a road hazard, increasing the risk of a crash or injury.
- Is there a fix yet?
- Yes, and it is free. Owners are advised not to drive their vehicles until the repair has been performed. Dealers will inspect the wheel and hub mating surfaces, remove any masking material, and replace any worn components if necessary, free of charge. Owner notification letters were mailed June 22, 2026.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Mack calls this recall SC0495, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “Wheel detachment can cause a loss of vehicle control or create a road hazard, increasing the risk of a crash or injury.”
affected
in the notice
caught
| Campaign | 26V351 |
|---|---|
| Filed by | Mack Trucks, Inc. |
| System at fault | Wheels:Lugs/Nuts/Bolts/Studs |
| Reported to NHTSA | 28 May 2026 |
| Model years | 2026-2027 |
| Vehicles named | MACK ANTHEM (AN), MACK ANTHEM AN (4), MACK GRANITE (GR), MACK PINNACLE (PI/PN), MACK PIONEER PR (4) |
This is not an ordinary campaign.
- Owners are told not to drive the vehicle at all. NHTSA applies this to a small minority of campaigns. 28 of the 1,399 we currently hold.
What the notice says today
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2026 Anthem (AN), 2026-2027 Pioneer PR (4), Pinnacle (PI/PN), Granite (GR), and 2027 Anthem AN (4) vehicles. The wheel lug nuts may loosen and allow the wheel to detach.
The consequence
Wheel detachment can cause a loss of vehicle control or create a road hazard, increasing the risk of a crash or injury.
The remedy
Owners are advised not to drive their vehicles until the repair has been performed. Dealers will inspect the wheel and hub mating surfaces, remove any masking material, and replace any worn components if necessary, free of charge. Owner notification letters were mailed June 22, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0495. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on May 31, 2026.
What it said before
Nothing has changed while we have been watching. We last read the wording of this campaign on 17 September 2026, and it matched the copy we already held.
That copy hashes to 06d36e965e4f41975598709265a1555f…, so if it is ever edited the change is provable rather than a matter of memory.
This is one of 191 notices in the record whose component field names wheels. Across that group the median wait before owners were written to was 30 days.
Last checked . No change has been recorded in the wording.
The same recall in other countries
This campaign carries a manufacturer code that also appears in another country’s register, which means the same defect was recalled there too.
- Canada: Transport Canada recall 2026265, recorded 29 May 2026 (within a week of the American filing)
Matched on SC0495, the manufacturer’s own number for this campaign, which is the only field the registers share. Exact match, nothing paired on brand and date. The two dates are adjacent instruments rather than the same one, so a difference of a day or two means nothing.
How often the two countries file on the same day · The European alerts
The models named here, across their whole recall history
- Mack Anthem (An) recalls: 23 US campaigns
- Mack Anthem An (4) recalls: 5 US campaigns
- Mack Granite (GR) recalls: 26 US campaigns
- Mack Pinnacle (Pi/PN) recalls: 14 US campaigns
- Mack Pioneer PR (4) recalls: 13 US campaigns
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 26V351, wording as read on 17 September 2026. https://carsmultiverse.com/recall/26v351/
The copy quoted above hashes to 06d36e965e4f41975598709265a1555f…. If the notice is reworded later, that fingerprint will not match, which is how a reader checks that the quotation was of the version we say it was.
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Mack notices we hold
- 26V515: 2027 Anthem AN (4) and Pioneer PR (4)
- 26V509: 2025 TerraPro trucks
- 26V261: 2025-2027 Pioneer (4) and 2026-2027 Anthem (4)
- 26V207: 2025-2027 Pioneer (4) and 2027 Anthem (4) trailers
- 26V139: 2022-2027 TerraPro trucks
- 26E055: Grote replacement marker lights with part number 78513681
- 25V867: 2010-2016 Granite (GU) trucks
- 25V803: 2026 Anthem (4) and 2025-2026 Pioneer
All 113 Mack campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 26V351 on 23 August 2026, they were:
- Defect summary
e3732e8c - Consequence
52e2b432 - Remedy
a99653d8
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 26V351 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Mack Pinnacle (Pi/PN), in all seven, is kept on that vehicle's own page, with the newest in each.
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Owners of these cars
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