Mack Granite (Gu), model years 2020 to 2021. Filed by Mack Trucks, Inc. and reported to NHTSA on 25 June 2021. 8 vehicles potentially affected.
What the notice says Mack Trucks, Inc. (Mack Trucks) is recalling certain 2020-2021 Granite vehicles equipped with certain SL2065 steerable lift axles. The lower rear pivot cap screws may not be long enough to sufficiently engage the locking feature of the corresponding nuts.
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: SC0426. That is the number on the owner letter and on the dealer paperwork. 21V476 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 21V476 cover?
- Mack Granite (Gu), model years 2020-2021.
- What is wrong with them?
- Mack Trucks, Inc. (Mack Trucks) is recalling certain 2020-2021 Granite vehicles equipped with certain SL2065 steerable lift axles. The lower rear pivot cap screws may not be long enough to sufficiently engage the locking feature of the corresponding nuts.
- What can happen if it is not put right?
- The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury.
- Is there a fix yet?
- Yes, and it is free. Mack Trucks will inspect the suspension system and replace the lower rear pivot cap screws, as necessary, free of charge. Owner notification letters were mailed on July 30, 2021. Owners may contact Mack Trucks' customer service at 1-800-866-1177. Mack Trucks' number for this recall is SC0426.
- 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 SC0426, 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: “The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury.”
affected
in the notice
caught
| Campaign | 21V476 |
|---|---|
| Filed by | Mack Trucks, Inc. |
| System at fault | Suspension:Multiple Axle |
| Reported to NHTSA | 25 June 2021 |
| Model years | 2020-2021 |
| Vehicles named | MACK GRANITE (GU) |
What the notice says today
The consequence
The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury.
The remedy
Mack Trucks will inspect the suspension system and replace the lower rear pivot cap screws, as necessary, free of charge. Owner notification letters were mailed on July 30, 2021. Owners may contact Mack Trucks' customer service at 1-800-866-1177. Mack Trucks' number for this recall is SC0426.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 732 notices in the record whose component field names suspension. Across that group the median wait before owners were written to was 33 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 21V476, wording as read on 16 September 2026. https://carsmultiverse.com/recall/21v476/
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
- 13V493: model year 2014 CXU and GU model
- 13V492: model year 2013-2014 CHU, CXU, GU, LEU, and MRU
- 13V195: model year 2013-2014 CHU, CXU, GU, MRU, and LEU trucks manufactured July 16, 2012, through march 18, 2013 and equipped with drum brakes
- 13V153: model year 2011-2013 CXU trucks manufactured November 23, 2010, through March 19, 2012
- 12V017: MODEL YEAR 2002-2005 MR AND LE HEAVY TRUCKS, MANUFACTURED FROM FEBRUARY 1, 2002, THROUGH DECEMBER 22, 2004
- 11V461: MODEL YEAR 2011-2012 CXU TRUCKS MANUFACTURED FROM MAY 1, 2010, THROUGH JANUARY 31, 2011
- 11V374: MODEL YEAR 2009-2012 MRU HEAVY TRUCKS MANUFACTURED FROM NOVEMBER 26, 2008, THROUGH APRIL 26, 2011
- 11V295: MODEL YEAR 2012, CHU, CXU, GU, MRU, LEU, AND TD TRUCKS EQUIPPED WITH A MERITOR DRIVELINE
All 14 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 21V476 on 23 August 2026, they were:
- Defect summary
c4057bae - Consequence
d911d411 - Remedy
13b9d736
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 21V476 · 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 Granite (Gu), in all seven, is kept on that vehicle's own page, with the newest in each.
Put this notice on your site
A small badge that links here and names the register's reference. It costs one line of HTML and needs no key.
The badge is free to use. It links to this page and nowhere else, and it never shows advertising.
Owners of these cars
No register publishes what happens after the letter. Owners do: tell us, in two taps.
Anonymous: no account, no cookie, nothing you type is stored beyond these choices. Figures appear once 3 owners have answered, and are published with the record under CC BY 4.0.