Mack Dm Recalls & Complaints by Model Year

NHTSA lists 37 safety recalls and 1 owner complaint across 31 model years of the Mack Dm (1965–2006). The most-complained-about year is 2006.

Pick your Mack Dm model year

• 1965
• 1966
• 1967
• 1968
• 1969
• 1970
• 1971
• 1972
• 1973
• 1974
• 1975
• 1976
• 1977
• 1978
• 1979
• 1987
• 1988
• 1989
• 1990
• 1991
• 1992
• 1993
• 1998
• 1999
• 2000
• 2001
• 2002
• 2003
• 2004
• 2005
• 2006

What Mack Dm owners complain about

Across all model years, owners have filed 1 complaint with NHTSA. The 2006 model year has the most, with 1.

• Unknown or other1

All Mack Dm recalls (37)

Every NHTSA safety campaign that lists a Mack Dm, most recent first, with the model years each one covers.

1. Axle assembly (power train)

   NHTSA 10V069000 Reported March 3, 2010 15,490 vehicles potentially affected MACK TRUCKS, INC

   Mack trucks is recalling certain model year 2002 through 2004 cl, cv, le, mr, rb, rd, and model year 2003 through 2004 dm heavy trucks manufactured from february 1, 2002 through september 30, 2003, equipped with axle beams manufactured by bharat forge. The axle beam may have transverse shear lines on the bottom of the axle from the…

   Remedy: Mack will notify owners, inspect and replace any affected axle beams free of charge. The safety recall began on march 5, 2010. Owners may contact mack at 1-800-866-1177.

   Model years: 2003, 2004

2. Axle assembly (power train)

   NHTSA 09V240000 Reported June 30, 2009 10,300 vehicles potentially affected MACK TRUCKS, INC

   Mack is recalling 10,300 model year 2004 and 2005 cl, cv, dm, le, and rb and model year 2004 rd heavy trucks manufactured from october 1, 2003 through september 30, 2004, equipped with axle beams manufactured by bharat forge. The axle beam may have transverse shear lines on the bottom of the axle from the trimming process.

   Remedy: Mack will notify owners, inspect and replace any affected axle beams free of charge. The safety recall began on august 14, 2009. Owners may contact mack at 1-800-866-1177.

   Model years: 2004, 2005

3. Idler and attachment (steering)

   NHTSA 05V349000 Reported July 28, 2005 23 vehicles potentially affected MACK TRUCKS, INC

   On certain trucks, the bolt that attaches the pitman arm to the steering gear may not be tightened properly.

   Remedy: Dealers will check the torque on the bolt that attaches the pitman arm to steering gear and tighten the bolt properly. The recall beagn august 18, 2005. Owners contact mack at 1-800-2528-6586.

   Model years: 2006

4. Steering

   NHTSA 05V118000 Reported March 29, 2005 127 vehicles potentially affected MACK TRUCKS, INC

   On certain heavy-duty, class 8 trucks, the lower and upper steering shaft pinch bolts were improperly tightened.

   Remedy: Dealers will inspect the torque at the suspect joints, and correct if necessary free of charge. The recall began on may 5, 2005. Owners may contact mack at 1-610-709-2131.

   Model years: 2004

5. Drum (service brakes)

   NHTSA 04V258000 Reported June 7, 2004 36 vehicles potentially affected MACK TRUCKS, INC

   On certain class 8 chassis built with hendrickson lift axles which contained webb brake drums, the brake drums could experience premature crack of the braking surface resulting in reduction or complete loss of braking on that wheel end or loss of brake drum pieces.

   Remedy: Webb wheel is conducting the owner notification and remedy for this campaign. Webb will notify customers, inspect the brake drums and replace any drums that fail inspection. Owners should contact webb at 1-800-633-3256…

   Model years: 2001, 2002

6. Chamber (service brakes)

   NHTSA 04V118000 Reported March 4, 2004 35 vehicles potentially affected MACK TRUCKS, INC

   Certain trucks fail to comply with the requirements of federal motor vehicle safety standard no. 121, "air brake systems." the front brake chamber on some 18,000 lb. And 20,000 lb front axle assemblies is too small to meet stopping distance requirements.

   Remedy: Dealers will replace the front brake chambers. The recall began april 21, 2004. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a…

   Model years: 2003, 2004

7. Service brakes, air: controls, pedals and linkages

   NHTSA 01V189004 Reported August 1, 2001 8,268 vehicles potentially affected MACK TRUCKS, INCORPORATED

   Vehicle description: heavy duty trucks equipped with certain meritor-wabco brake system two and four port relay valves. The valve may stick open when a high-pressure application is released.

   Remedy: Dealers will replace these valves. Owner notification began november 16, 2001. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a…

   Model years: 2000, 2001

8. Accelerator pedal (vehicle speed control)

   NHTSA 00V230003 Reported October 4, 2000 45,866 vehicles potentially affected MACK TRUCKS, INCORPORATED

   Vehicle description: class 8 trucks equipped with felsted electronic accelerator pedals. The return springs can break on the accelerator pedals that are equipped with stainless steel or electroplated wire return springs.

   Remedy: Replacement accelerator pedals equipped with return springs manufactured of music wire with one additional coil on each spring and with an organic coating, eliminating electroplating will be installed.

   Model years: 1999, 2000

9. Antilock (service brakes)

   NHTSA 00V232009 Reported September 13, 2000 651 vehicles potentially affected MACK TRUCKS, INCORPORATED

   Vehicle description: heavy duty trucks built with bendix air ABS with an ec-17 1030r electronic control unit (ECU), there have been reports of unwanted ABS activation at low speeds caused by 1) chafed ABS wheel speed sensor wires on rotating parts or 2) a damaged component at the wheel end that generates a certain type of erratic sensor…

   Remedy: Dealers will replace the ABS ECU.

   Model years: 1998, 1999, 2000

10. Wheel bearing (suspension)

    NHTSA 99V014001 Reported January 22, 1999 8,025 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Vehicle description: class 8 heavy duty truck chassis equipped with mack 16,000 lb., 18,000 lb., or 20,000 lb. Heavy duty steering axles. The inner wheel bearing cone for the steering axle wheel hub assembly does not properly fit onto the mack steering axle spindle assembly. Improper fit of the bearing to the spindle increases the…

    Remedy: Dealers will remove the left and right hub/drum assemblies from the steering axles and replace the inner wheel bearing cones and cups.

    Model years: 1998

11. Vehicle speed control

    NHTSA 94V032000 Reported February 15, 1994 39,777 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Fuel injection system reconfiguration to comply with engine emission standards cause higher engine vibration levels which lead to early wear and complete failure of the secondary throttle return mechanism.

    Remedy: A new production secondary throttle return system configuration will be installed.

    Model years: 1987, 1988, 1989, 1990, 1991, 1992

12. Trailer hitches

    NHTSA 93V024000 Reported February 16, 1993 4,924 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process.

    Remedy: Replace the carrier yoke bolts.

    Model years: 1992, 1993

13. Linkages (visibility)

    NHTSA 90V051000 Reported March 16, 1990 2,350 vehicles potentially affected MACK TRUCKS, INCORPORATED

    A tolerance mismatch in the crank assembly of the bosch windshield wiper motor could cause instantaneous separation of the crank from the linkage assembly in the left hand control arm assembly; this would make the system inoperable.

    Remedy: Replace left hand control arm linkage assembly.

    Model years: 1989

14. Engine (engine and engine cooling)

    NHTSA 79V133000 Reported May 31, 1979 23,000 vehicles potentially affected MACK TRUCKS, INCORPORATED

    In the event of turbocharger compressor wheel failure, one or more of the four capscrews that hold the turbocharger together may be struck by parts of the compressor wheel, resulting in the capscrews being damaged. If these capscrews are damaged to the point that they allow the compressor back plate to dislocate from the turbocharger…

    Remedy: Dealer will install a shield for the heads of the four capscrews, along with stronger sae 8 grade 8 capscrews, if necessary, at no cost to owner.

    Model years: 1977, 1978, 1979

15. Steering wheel/handle bar (steering)

    NHTSA 79V134000 Reported May 30, 1979 64,150 vehicles potentially affected MACK TRUCKS, INCORPORATED

    In the involved trucks it is possible the adjustable steering column rear mounting bracket could fail, allowing steering wheel assembly to fall down onto the operator"s lap.

    Remedy: Dealer will install an additional bracket in this area to prevent the steering wheel from dislocating in the event of a bracket failure.

    Model years: 1974, 1975, 1976, 1977, 1978

16. Steering wheel/handle bar (steering)

    NHTSA 79V082000 Reported April 3, 1979 12,000 vehicles potentially affected MACK TRUCKS, INCORPORATED

    An improper pinch bolt and nut may have been used in the clamping of the steering shaft to the steering gear input shaft. Due to clamping force loads applied at the bolt, the nut could yield, resulting in looseness of the input shaft yoke. Should this condition go unnoticed, spline wear could cause shaft separation.

    Remedy: Vehicles will be inspected and, if necessary, the correct fasteners will be installed at no charge to owner.

    Model years: 1977, 1978

17. Multiple axle (suspension)

    NHTSA 79V017000 Reported January 12, 1979 4,000 vehicles potentially affected MACK TRUCKS, INCORPORATED

    A casting deficiency exists in the lower section of the caps resulting in a reduction in the thickness of the material. Failure of a cap can allow the end of the rear spring to detach from the axle housing.

    Remedy: Dealer will inspect and, if necessary, replace any of the spring insulator caps found to be defective. This will be done at no cost to owner.

    Model years: 1977, 1978

18. Interconnecting assembly(wiring) (service brakes)

    NHTSA 78V210000 Reported October 3, 1978 19,370 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Delays of up to about 2 seconds may exist in the brake application times to the brakes on the bogie axles in the presence of certain types of wheel speed sensor signal discontinuities or distortions that may occur as a result of sensor wire failure. This constitutes a non-compliance to federal motor vehicle safety standard no. 121, "air…

    Remedy: Dealer will install new wheel speed sensors that incorporate improved wiring and the present bogie anti-wheel lock system will be changed to an axle-to-axle system for improved reliability.

    Model years: 1977, 1978

19. Arm (steering)

    NHTSA 78V172000 Reported August 8, 1978 13,800 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The existing cross steering arms may have insufficient fatigue life in the neck area. This is near the boss for the cross steering tube ball joint connection. Failure of either of the cross steering levers could lead to loss of steering control of the right front wheel.

    Remedy: The dealer will inspect and, if necessary, install cross steering arms of improved design and greater strength.

    Model years: 1974, 1975, 1976, 1977, 1978

20. Service brakes, air: control unit/module

    NHTSA 78V068000 Reported April 4, 1978 9,700 vehicles potentially affected MACK TRUCKS, INCORPORATED

    An axle "no brake" condition could result from an eaton controller internal electrical malfunction. This condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles. As a result, the anti-wheel lock warning lamp is not activated.

    Remedy: The dealer will inspect and, if necessary, replace the anti-wheel lock controller without charge to owner.

    Model years: 1974, 1975, 1976

21. Gasoline (engine and engine cooling)

    NHTSA 78V032000 Reported February 9, 1978 459 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The synflex-type oil pressure signal line may have been routed too close to the exhaust manifold. Excessive heat may cause the line to rupture, and oil leakage may occur.

    Remedy: The dealer will reroute the oil pressure signal line to eliminate potential fire hazard, without charge to owner.

    Model years: 1976, 1977

22. Hanger/bracket (suspension)

    NHTSA 77V205000 Reported November 21, 1977 7,400 vehicles potentially affected MACK TRUCKS, INCORPORATED

    A deficiency exists in the welds securing the rear spring insulator bracket to the axle housing. This is due to improper positioning of the weld, in relationship to the bracket and axle housing. Failure of the welds would cause separation of the spring insulator bracket and the axle housing, resulting in improper alignment of the…

    Remedy: Dealer will reweld the insulator spring bracket at no cost to owner.

    Model years: 1977

23. Fan (engine and engine cooling)

    NHTSA 77V173000 Reported October 12, 1977 48,000 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The flex blade fans on the involved vehicles may develop cracks in the laminated stiffener as a result of fatigue during operation. If such a condition exists and the cracks go undetected, continued operation could cause pieces of the stiffener to break off.

    Remedy: Dealer will replace the original fan with a steel fixed blade fan, free of charge.

    Model years: 1972, 1973, 1974, 1975, 1976, 1977

24. Anchorage (seat belts)

    NHTSA 77V174000 Reported October 12, 1977 6,591 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The involved vehicles do not conform to federal motor vehicle safety standard no. 209, "seatbelt assemblies". Although the seatbelts in question performed marginally with respect to the 5000 lb. Load requirement, additional testing confirmed that the anchor could fail, allowing either the anchor to slip over the hold-down nut or the…

    Remedy: Dealer will inspect and, if necessary, replace seat belt assemblies without charge to owner.

    Model years: 1977

25. Wheels

    NHTSA 77V096000 Reported June 17, 1977 825 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The front wheel rim clamp studs, installed on the involved vehicles, may not have been manufactured correctly, causing a brittle condition in the thread root area. The studs could eventually crack and break when wheel nuts are tightened to specifications.

    Remedy: The dealer will replace all suspect front wheel studs, without charge to owner.

    Model years: 1977

26. Interconnecting assembly(wiring) (service brakes)

    NHTSA 75V190000 Reported October 31, 1975 3,400 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1974, 1975

27. Hoses, lines/piping, and fittings (service brakes)

    NHTSA 75V192000 Reported October 31, 1975 1,200 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1974, 1975

28. Multiple axle (suspension)

    NHTSA 75V118000 Reported June 23, 1975 414 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1967, 1968, 1969, 1970, 1971, 1972, 1973

29. Switch (exterior lighting)

    NHTSA 74V227000 Reported November 21, 1974 1,023 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1973, 1974

30. Connection (steering)

    NHTSA 74V120000 Reported August 5, 1974 1,776 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1965, 1966, 1967

31. Banjo housing (power train)

    NHTSA 74V032000 Reported February 25, 1974 9,019 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1971, 1972

32. Service brakes, air

    NHTSA 73V102000 Reported May 4, 1973 2,481 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1971, 1972, 1973

33. Fuel injection system (fuel system)

    NHTSA 72V127000 Reported May 22, 1972 1,410 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1970, 1971

34. Linkages (steering)

    NHTSA 72V041000 Reported February 14, 1972 538 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1970, 1971

35. Hubcap/cover (wheels)

    NHTSA 71V226000 Reported December 9, 1971 238 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1970, 1971

36. Electrical heating element (visibility)

    NHTSA 69V109000 Reported August 13, 1969 87 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1969

37. Brake lights (exterior lighting)

    NHTSA 69V088000 Reported June 27, 1969 4,212 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1968, 1969

Other Mack models

• Mack28 complaints
• Anthem (an)12 complaints
• Granite (gr)9 complaints
• CXU6127 complaints
• Ch6 complaints
• Gu6 complaints
• CH6005 complaints
• Cxu5 complaints

Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.