2010 Mack CXU612 Other or unknown Problems
- Complaints
- 6about this part
- Share
- 100%of 6 total for the year
- Median mileage
- 63,450miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the other or unknown of the 2010 Mack CXU612, 100% of the 6 complaints for this model year. Where a mileage was given, the median is 63,450 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The 5th wheel mount bolts on my company's 2010 and 2009 Mack trucks are stretching and becoming loose. I saw unit 10101 on sunday, 20 march 2011 on our yard ready to hook up. I had finished my shift and was walking past the unit when I reached out and turned the bolt by hand.”
NHTSA complaint #10392537, filed 2011-03, 150,000 miles“Mack has been selling over the road trucks with substandard bolts holding the 5th wheel to the frame. As a mechanic with abf, I am seeing trucks every day with 5th wheels that are loose. On 22 september 2010, I worked on unit #10222 at the little rock shop. This truck had only 4376 miles on it and I could turn the 5th wheel bolts with one hand using a 10 inch combination wrench. I tried to torque the bolts to specs, but they only stretched. I replaced the bolts with aftermarket bolts which tightened normally.”
NHTSA complaint #10358965, filed 2010-10, 4,376 miles“I am a mechanic for a large trucking firm. I have been complaining about the 5th wheel bolts on our 2008, 2009, and 2010 Mack trucks for two years now. The company has yet to implement a program to correct this matter, instead choosing to threaten me with disciplinary action for pointing out loose bolts on our road tractors. Today (03/15/2011) I passed a 2010 tractor on the ready line. It was unit #10289 with only 76327 miles on it. The 5th wheel plate had been shifting on the frame and all of the fastening bolts were rusty. The two bolts that I checked turned easily by hand - rattling loose. …”
NHTSA complaint #10390328, filed 2011-03, 76,327 milesRelated service bulletins
- 10213625May 17, 2022Mack - PTO Pump Speed Calculator
- 10213642May 16, 2022No Start Condition After Over The Air Programing - VECU5 No Start "Safe State"
- 10209854Mar 31, 2022Service Literature Published and Released in March, 2022
- 10208550Feb 21, 2022System Date And Time, Information; Diagnostic Tool ( J-Pro, Premium Tech Tool ( PTT ) ) Displays Incorrect Timestamp For Diagnostic Trouble Code ( DTC ) / Fault Code Occurrences…
- 10208543Feb 10, 2022Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
- 10206158Dec 21, 2021Mack Chassis - FSB 563-008 Plugs, Pressure Protection Manifold - New Brass Plugs For Noregon Pressure Protection Manifold (PPM)
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 6 | 100% |
Other parts of the 2010 Mack CXU612
← All problems reported for the 2010 Mack CXU612
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology