WenmarOpen by Wenmar Pro

Service bulletin M-451-001

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10219059
Published by NHTSA2022-09-01
Manufacturer's numberM-451-001
Manufacturer's date2022-08-06
NHTSA componentSTRUCTURE; SUSPENSION:FRONT; POWER TRAIN:DRIVELINE

NHTSA's summary

2007 Document reformatted to be published as a TSB in Impact. Updated Crossmember for improved clearance.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Body and frame, Suspension, Transmission and driveline

Vehicles listed
MACK CHN2002, 2003, 2004, 2005, 2006, 2007, 2008
MACK CHU
MACK CHU2006 to 2018
MACK CXN2002 to 2008
MACK CXP2006 to 2008
MACK CXU
MACK CXU2006 to 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
07V1230002007-03-21. POWER TRAIN:AXLE ASSEMBLY
05V4540002005-10-04. POWER TRAIN:AXLE ASSEMBLY
05V3130002005-07-07. POWER TRAIN:AXLE ASSEMBLY
05V1110002005-03-24. POWER TRAIN:AXLE ASSEMBLY

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
CBR 2573-1 2026042026-05-05. Service bulletin. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR 2362-3 2026042026-05-04. Service bulletin. CBR - Mack Carrier Nut Adhesive Change.
CBR-202 2024022024-03-05. Service bulletin. CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
M-465-001 2023112023-12-05. Service bulletin. TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.98 ratios. The new HD through shaft is an upgrade over the current standard shaft and can now be used as a replacement part instead of the standard shaft. The new HD shaft has a new design to increase strength, longevity and life over the standard shaft.
M728-005A 2023082023-09-06. Service bulletin. TSB: Barksdale Leveling Valve, Leak Test
KC-474-Ver52023-06-05. Service bulletin. CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
M-711-0022022-09-01. Service bulletin. 2008 Document reformated to be published as a TSB in Impact. Frame reinforcement plate.
M-711-0012022-09-01. Service bulletin. 2008 Document reformatted to be published as a TSB in Impact. Rear Suspension Repair.
KC-21122022-07-05. Service bulletin. Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-4052022-07-05. Service bulletin. Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For Filing A Claim For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation - US07 And N.