Mack Trucks Recall Fifth Wheel Bolts on 2008-2011 Models
Mack Trucks is recalling 808 heavy trucks due to fifth wheel bolts that may not be torqued to specification, risking trailer separation.
What this means for you
Our assessment, not the agency’s: severity 4/5 (Severe).
The hazard poses a serious risk of illness, injury, or structural failure. Stop using the product immediately and contact the manufacturer for a refund or repair.
Our severity reasoning: The recall involves a structural vehicle defect (fifth wheel bolts) that could result in trailer separation and a crash, meeting the criteria for a Severe rating.
Plain-English summary
Mack Trucks, Inc. is recalling certain model year 2008-2011 CHU and CXU heavy trucks manufactured from January 2008 through July 2010. The recall covers 808 vehicles, including specific Pinnacle models from 2011.
The defect involves potential interference with the bolts used to secure the fifth wheel to the frame. This interference can prevent the bolts from being torqued to the required specification. If the bolts fail, the fifth wheel could come loose, causing the trailer to separate from the tractor and increasing the risk of a crash.
Dealers will inspect and replace the bolts as required free of charge. The safety recall began on May 30, 2011. Owners may contact Mack Trucks at 1-800-866-1177 or the NHTSA Vehicle Safety Hotline at 1-888-327-4236.
The recalled product
- Product
- MACK CXU, CHU, PINNACLE (CHU), PINNACLE (CXU)
- Brand
- MACK
- Manufacturer
- MACK TRUCKS, INC
- Category
- Vehicle — Heavy Truck
- Affected units
- 808
Is your product affected?
Check your packaging against the codes below. If any of them match, the product is part of this recall.
Model numbers (4)
- CXU
- CHU
- PINNACLE (CHU)
- PINNACLE (CXU)
Distribution
Distributed nationwide across the United States.
Related recalls
Same brand · MACK
- High
- Severe
- SevereMack Recalls 2025 TerraPro Trucks Due to Steering Gearbox Fastener Issue
NHTSA · 2026-08-06
- HighMack Recalls 2027 Anthem and Pioneer Trucks for Marker Light Defect
NHTSA · 2026-08-06
- SevereMack Trucks Recalls 644 Vehicles Due to Wheel Lug Nut Loosening Risk
NHTSA · 2026-05-28
Same manufacturer · MACK TRUCKS, INC
See all →- HighMack Recalls Grote Replacement Marker Lights for Visibility Failure
NHTSA · 2026-08-12
- SevereMack Trucks Recalls 2025-2027 Pioneer and Anthem Models for Brake Defect
NHTSA · 2026-04-23
Same hazard · structural defect
See all →- SevereSubaru Recalls 2026 Forester and Crosstrek for Ball Joint Defect
NHTSA · 2026-10-19
- SevereVolvo Recalls EX30 and EX30CC Vehicles for Head Restraint Defect
NHTSA · 2026-10-09
- Severe
- Severe
- SevereDecathlon Recalls Van Rysel GRVL AF Bicycles Due to Crash Hazard
CPSC · 2026-10-08
Similar recalls
- SevereMack Pinnacle Trucks Recalled for Fifth Wheel Coupling Defect
NHTSA · 2011-09-01
- SevereMack Pinnacle Trucks Recalled for Fifth Wheel Locking Mechanism Defect
NHTSA · 2015-10-13
- SevereMack Pinnacle Trucks Recall Fifth Wheel Latch Defect
NHTSA · 2015-03-11
- SevereMack Trucks Recall 2010-2011 Models for Clutch Pedal Shaft Weld Defect
NHTSA · 2011-07-21
- HighMack Trucks Recalls 2015 Models Due to Seat Belt Bolt Torque Defect
NHTSA · 2014-09-11
- SevereMack Trucks Recalls 2013-2014 Models Due to Axle Nut Defect
NHTSA · 2013-10-17