Mack Mru, Mack Terrapro (Mru), model years 2009 to 2012. Filed by Mack Trucks, Inc and reported to NHTSA on 20 July 2011. 2,294 vehicles potentially affected.
What the notice says Mack trucks is recalling certain model year 2009-2012 mru heavy trucks manufactured from november 26, 2008, through april 26, 2011. the bolts used to mount the steering gear were not tightened to specification. the bolts can loosen which over time may cause the steering gear to disconnect from its mounting bracket.
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: SC0356. That is the number on the owner letter and on the dealer paperwork. 11V374 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 11V374 cover?
- Mack Mru, Mack Terrapro (Mru), model years 2009-2012.
- What is wrong with them?
- MACK TRUCKS IS RECALLING CERTAIN MODEL YEAR 2009-2012 MRU HEAVY TRUCKS MANUFACTURED FROM NOVEMBER 26, 2008, THROUGH APRIL 26, 2011. THE BOLTS USED TO MOUNT THE STEERING GEAR WERE NOT TIGHTENED TO SPECIFICATION.
- What can happen if it is not put right?
- A COMPLETE LOSS OF STEERING MAY OCCUR INCREASING THE RISK OF A VEHICLE CRASH.
- Is there a fix yet?
- Yes, and it is free. DEALERS WILL REPLACE THE BOLTS, WHICH WILL BE TIGHTENED TO THE CORRECT SPECIFICATION. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON SEPTEMBER 19, 2011. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-866-1177.
- 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 SC0356, 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: “A COMPLETE LOSS OF STEERING MAY OCCUR INCREASING THE RISK OF A VEHICLE CRASH.”
affected
in the notice
caught
| Campaign | 11V374 |
|---|---|
| Filed by | MACK TRUCKS, INC |
| System at fault | Steering:Gear Box:Shaft Sector |
| Reported to NHTSA | 20 July 2011 |
| Model years | 2009-2012 |
| Vehicles named | MACK MRU, MACK TERRAPRO (MRU) |
What the notice says today
The consequence
A COMPLETE LOSS OF STEERING MAY OCCUR INCREASING THE RISK OF A VEHICLE CRASH.
The remedy
DEALERS WILL REPLACE THE BOLTS, WHICH WILL BE TIGHTENED TO THE CORRECT SPECIFICATION. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON SEPTEMBER 19, 2011. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-866-1177.
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 745 notices in the record whose component field names steering. Across that group the median wait before owners were written to was 39 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 11V374, wording as read on 17 September 2026. https://carsmultiverse.com/recall/11v374/
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
- 21V476: 2020-2021 Granite
- 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
- 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 11V374 on 17 September 2026, they were:
- Defect summary
d8c2aa35 - Consequence
d6f20d51 - Remedy
93bd0778
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 11V374 · 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 Terrapro (Mru), in all seven, is kept on that vehicle's own page, with the newest in each.
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