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Mack recall 10V404 (SC0345): Model Year 2008 Through 2011 Gu and Mru Model

A brake disc and caliper on a car
Illustrative photo, not the recalled vehicle. Photo: Toby Hall / Unsplash

Mack Gu, Mack Mru, Mack Terrapro (Mru), model years 2008 to 2011. Filed by Mack Trucks, Inc and reported to NHTSA on 7 September 2010. 369 vehicles potentially affected.

What the notice says Mack is recalling certain model year 2008 through 2011 gu and mru model vehicles manufactured with a front tow glad hand option. the actuation and release timing of the vehicles exceeds the limit which fails to conform to the requirements of federal motor vehicle safety standard no. 121, "air brake systems."

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.

CarsMultiverse/Recalls

Mack's own number for this recall: SC0345. That is the number on the owner letter and on the dealer paperwork. 10V404 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 10V404 cover?
Mack Gu, Mack Mru, Mack Terrapro (Mru), model years 2008-2011.
What is wrong with them?
MACK IS RECALLING CERTAIN MODEL YEAR 2008 THROUGH 2011 GU AND MRU MODEL VEHICLES MANUFACTURED WITH A FRONT TOW GLAD HAND OPTION. THE ACTUATION AND RELEASE TIMING OF THE VEHICLES EXCEEDS THE LIMIT WHICH FAILS TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO.
What can happen if it is not put right?
IF THE BRAKES DO NOT PERFORM AS THEY SHOULD, A VEHICLE CRASH COULD OCCUR.
Is there a fix yet?
Yes, and it is free. MACK WILL NOTIFY OWNERS AND REPAIR THE VEHICLE FREE OF CHARGE. THE SAFETY RECALL BEGAN ON FEBRUARY 1, 2011. OWNERS MAY CONTACT MACK AT 1-877-800-4945.
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 SC0345, 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: “IF THE BRAKES DO NOT PERFORM AS THEY SHOULD, A VEHICLE CRASH COULD OCCUR.”

369vehicles potentially
affected
3models named
in the notice
0rewrites we have
caught
reported 7 September 2010owners told 1 February 2011today
The defect reached the regulator on 7 September 2010. Owners were written to 147 days later, on 1 February 2011. The median across the 14,869 American recalls that carry both dates is 41 days, and nine in ten owners are written to within 107. This campaign is in the slowest tenth of the register.
Campaign10V404
Filed byMACK TRUCKS, INC
System at faultService Brakes, Air
Reported to NHTSA7 September 2010
Model years2008-2011
Vehicles namedMACK GU, MACK MRU, MACK TERRAPRO (MRU)

What the notice says today

The consequence

IF THE BRAKES DO NOT PERFORM AS THEY SHOULD, A VEHICLE CRASH COULD OCCUR.

The remedy

MACK WILL NOTIFY OWNERS AND REPAIR THE VEHICLE FREE OF CHARGE. THE SAFETY RECALL BEGAN ON FEBRUARY 1, 2011. OWNERS MAY CONTACT MACK AT 1-877-800-4945.

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 353 notices in the record whose component field names service brakes, air. Across that group the median wait before owners were written to was 43 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 10V404, wording as read on 17 September 2026. https://carsmultiverse.com/recall/10v404/

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

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 10V404 on 17 September 2026, they were:

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 10V404 · 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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NHTSA 10V404, Mack Gu and 2 more, every version kept at CarsMultiverse

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