Mack Chn Recalls & Complaints by Model Year
NHTSA lists 22 safety recalls and 1 owner complaint across 7 model years of the Mack Chn (2002–2008). The most-complained-about year is 2007.
Pick your Mack Chn model year
| Model year | Recalls | Complaints |
|---|---|---|
| 2008 Mack Chn | 1 | 0 |
| 2007 Mack Chn | 12 | 1 |
| 2006 Mack Chn | 13 | 0 |
| 2005 Mack Chn | 10 | 0 |
| 2004 Mack Chn | 7 | 0 |
| 2003 Mack Chn | 3 | 0 |
| 2002 Mack Chn | 2 | 0 |
What Mack Chn owners complain about
Across all model years, owners have filed 1 complaint with NHTSA. The 2007 model year has the most, with 1.
All Mack Chn recalls (22)
Every NHTSA safety campaign that lists a Mack Chn, most recent first, with the model years each one covers.
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Fifth wheel assembly (trailer hitches)
On certain trucks equipped with a saf holland simplex fifth wheel, the lever arm pivot bolt may have been over tightened. An over tightened pivot bolt can distort the pivot bolt spacer sleeve, which may prevent the fifth wheel latch jaw from closing and latching securely around the trailer king pin.
Remedy: Dealers will replace the pivot bolt and sleeve with a hex head shoulder bolt and washer free of charge. The recall began on january 28, 2008. Owners may contact mack trucks at 1-800-528-6586.
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Fuel system, diesel
On certain trucks equipped with aset AC model engines, the engine as configured with an external exhaust gas recirculation system makes servicing the fuel injection lines difficult when using traditional tools. Therefore, it is possible for fuel leaks to develop when removing and installing the fuel injection lines.
Remedy: Dealers will replace the fuel injection lines free of charge. Note: this recall supersedes a previous campaign conducted in 2006 (please see 06v392). The recall began on september 11, 2007, with subsequent mailings…
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Check valve (service brakes)
On certain trucks equipped with parker single check valves (scv) provided by bendix. The defect exists in the parker scv that connects with the supply port of the sr-7 spring brake modulating valve. After prolonged use of the parker scv, the valve body retainer may become excessively worn and eventually break apart. Pieces of the parker…
Remedy: Mack is working with bendix to replace the parker single check valve. The recall began on january 9, 2008. Owners may contact bendix at 1-440-329-9000 or mack at 1-800-528-6586.
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Parking brake
On certain trucks equipped with bendix sr-7 spring brake modulating valves, the internal rubber check valve may leak causing a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button.
Remedy: Mack is working with bendix to repair these vehicles (please see 07e037). Bendix will install a check valve repair kit for the affected sr-7 spring brake modulating valve free of charge. The recall began on january 10,…
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Fuel system, diesel
Certain trucks were recalled for the installation of sleeves on the fuel injection line as required by safety recall sc0317 (NHTSA recall no. 06v392). There is a possibility that the new sleeves may chafe the fuel injection line.
Remedy: Dealers will remove the protective sleeves on all fuel injection lines free of charge. This recall began on april 19, 2007. Owners may contact mack trucks at 1-800-528-6586.
Model years: 2007
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Axle assembly (power train)
On certain trucks, the axle housings may have been manufactured with steel that was out of specification which could result in a fatigue failure over time.
Remedy: Dealers will inspect and replace the axles free of charge. The recall is expected to begin on or about april 9, 2007. Owners may contact mack trucks at 1-800-528-6586.
Model years: 2007
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Steering
On certain trucks, the nut that retains the steering wheel may not have been installed.
Remedy: Dealers will remove the horn button to confirm that the retaining nut was installed. A retaining nut will be added if the nut is missing. The recall began on february 12, 2007. Owners may contact mack trucks at…
Model years: 2007
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Fuel system, diesel
On certain trucks, a leak in the aset AC fuel injection line may spray fuel on the exhaust gas recirculation pipes that carry hot exhaust gases .
Remedy: Mack has issued a stop work on this campaign under further notice (2-22-2007). The remedy does not adequately address the issue on all vehicles. Mack will re-release the recall in the near future. (please see NHTSA no.…
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Service brakes, air
On certain trucks, the brake cam tubes on the steer and drive axles may not have been greased.
Remedy: Dealers will add grease to the brake cam tubes free of charge. The recall began on september 29, 2006. Owners may contact mack at 1-800-866-1177.
Model years: 2007
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Fuel system, diesel
On certain trucks, the fuel line crossover bracket may prematurely fail and unexpectedly fall to the road. The location and size of the bracket draws a concern to the bracket being picked up and thrown by the drive axle wheels.
Remedy: Dealers will replace the brackets free of charge. The recall began on august 20, 2006. Owners may contact mack trucks at 1-800-528-6586.
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Service brakes, air
On certain trucks equipped with a legris air manifold, the brass push-to-connect cartridge may unexpectedly separate from the plastic housing.
Remedy: Dealers will replace the air manifold free of charge. The recall began on september 27, 2006. Owners may contact mack trucks at 1-800-528-6586.
Model years: 2007
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Air (parking brake)
On certain trucks equipped with sr-7 bendix brake valves, the check valve inside the valve cavity may not properly set, causing internal air leakage. If the check valve does not properly seat, the resulting leakage can cause a delay in the application of the spring brakes to park the vehicle after operator pulls the dash valve button.
Remedy: Dealers will inspect the valves and replace it free of charge. The recall began on august 14, 2006. Owners may contact mack trucks at 1-800-528-6586.
Model years: 2007
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Axle assembly (power train)
On certain trucks equipped with arvinmeritor series 145 and 160 rear drive axles. Some of the spindles were overheated during the heat treat process which could result in a fracture of the spindle.
Remedy: Dealers will inspect the spindle for suspect heat codes and replace the axle if necessary. The recall began on november 15, 2005. Owners may contact mack trucks at 1-336-393-2233.
Model years: 2006
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Service brakes, air
On certain vehicles. The brake cam tubes on the drive axle may not have been greased.
Remedy: Dealers will remove the brake camshaft to inspect for corrosion. The brake camshaft will be replaced as required free of charge. The recall began on january 18, 2006. Owners may contact mack at 1-336-393-2233.
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Service brakes, air
On certain vehicles, the brake cam tubes on the steer axle may not have been greased.
Remedy: Dealers will remove the brake camshaft to inspect for corrosion. The brake camshaft will be replaced as required free of charge. The recall began on february 27, 2006. Owners may contact mack at 1-336-393-2233.
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Service brakes, air
On certain vehicles, the brake cam tubes on the steer and drive axles may not have been greased.
Remedy: Dealers will remove the brake camshaft to inspect for corrosion. The brake camshaft will be replaced as required free of charge. The recall began on february 27, 2006. Owners may contact mack at 1-336-393-2233.
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Service brakes, air
On certain vehicles, the brake cam tubes on the steer and drive axles may not have been greased.
Remedy: Dealers will add grease to the brake cam tubes free of charge. The recall began on october 24, 2005. Owners may contact mack at 1-336-393-2233.
Model years: 2006
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Axle assembly (power train)
On certain heavy duty class 8 trucks equipped with fxl axles, there is a potential that the draglink may contact the brake slack adjuster during full wheel cut and articulation of the chassis.
Remedy: Dealers will replace the brake assemblies on the front axle. The recall began on august 19, 2005. Owners may contact mack trucks at 610-709-2131.
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Wheels
On certain heavy duty class 8 trucks equipped with accuride aluminum wheels, the wheels were not properly pre-stressed. This allows cracks to develop over time.
Remedy: Dealers will replace the wheels free of charge. The recall began on june 17, 2005. Owners may contact mack trucks at 610-709-2131.
Model years: 2006
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Axle assembly (power train)
On certain trucks equipped with the fxl axle and meritor 16.5 x 5 brakes with dust shields, there may be interference between the dust shield mounting bolt and the knuckle on the front axle. As a result of the interference, the bolt joint between the wheel end and the knuckle may not meet the torque requirements.
Remedy: Dealers will remove the hub and brake assembly to install a new dust shield free of charge. The recall began on august 17, 2005. Owners may contact mack trucks 610-709-2131.
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Chamber (service brakes)
On certain heavy duty class 8 trucks equipped with air suspension proprietary axles and adjustable lengh torque rods, an interference between the adjustable torque rod and the brake chamber on the left side of the chassis may exist. The spring brake chamber clamp ring could possibly be distorted over time resulting in loss of air, which…
Remedy: Dealers will repair and replace the adjustable torque rod, with a fixed length torque rod, inspect and repair the brake chamber free of charge. The recall began on may 3, 2005. Owners may contact mack trucks at…
Model years: 2004
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Hoses, lines/piping, and fittings (fuel system)
On certain heavy duty class 8 diesel trucks equipped with aset AC engines, the location of the fuel inlet hose may result in overheating or abrasion of the hose, which may lead to a premature failure.
Remedy: Dealers will repair and replace the fuel inlet hose free of charge. The recall began on february 14, 2005. Due to some quality and supply issues with parts to support this safety recall, owners may have been informed…
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.