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Issue: On certain trucks equipped with a gas engine, the brake vacuum pump may fail. This can cause a hard brake pedal and an increase in brake pedal effort that is required to stop the truck. If the brake vacuum pump fails, the low vacuum light will…

Issue: On certain trucks equipped with a gas engine, the exhaust pipe studs and nuts may not have been properly tightened. As a result, the exhaust pipe connection could loosen over time and create an exhaust leak in the engine compartment. Safety…

Issue: On certain trucks, the rear shackle bolts for the front leaf springs may not be properly tightened. As a result, the bolts could loosen and detach from the truck. Safety Risk: Parts that detach from the truck could create a road hazard for…

Issue: Certain trucks may have been built with rear leaf spring assemblies that could break. If a leaf spring breaks, a piece of the broken spring could detach from the truck while driving. Safety Risk: A leaf spring that detaches from the truck…

Issue: On certain trucks, the engine rocker arms may have been manufactured incorrectly. This could result in premature wear and could cause engine noise. A rocker arm could also break, which may result in a sudden engine stall. Note: If an operator…

On certain vehicles, steel brake pad shims may corrode and swell upon exposure to road de-icing chemicals and/or road salt. This could result in extended brake pedal travel when applying the brakes, potentially affecting stopping distances and increasing…

On certain vehicles outfitted with the optional accessory cold weather PCV heater kit, the pipe heater wiring may chafe on a metal clamp. This could result in the PCV pipe heater wiring to interact with the clamp, which could lead to an electrical short…

On certain vehicles, the fuel return hose could deteriorate when subjected to various chemicals and lubricants, such as those used when cleaning the vehicle or used in certain rear body applications. If the fuel return hose were to deteriorate, it could…

On certain vehicles, the lower engine timing chain bolt may have been insufficiently tightened during assembly and could loosen, resulting in an engine oil leak. Continued operation in this condition could cause engine damage resulting in a loss of…

On certain vehicles, the transmission oil cooler hose may have been manufactured incorrectly and may burst, causing an automatic transmission fluid (ATF) leak. As a result, the transmission could become inoperative, which could increase the risk of a…

On certain vehicles, debris may have contaminated the transmission fluid at time of assembly. This could result in abnormal noise when shifting, flaring between gears, inability to shift and/or engine stalling. These issues could increase the risk of a…

On certain vehicles, the transmission oil cooler hoses may leak due to the use of hose clamps with insufficient tightening force. This could result in a loss of motive power, increasing the risk of a crash causing injury and/or property damage.…

On certain trucks, one or more fuel pipes may crack due to an improper pipe manufacturing process. In addition, the fuel pipe flare nuts may have been insufficiently tightened. Repeated normal high fuel injection pressure application may crack the pipe…

On certain vehicles, the parking brake cable lock nut may have been improperly tightened during vehicle assembly and could loosen over time, allowing the parking brake lever stroke length to increase gradually. If left unchecked, the parking brake stroke…

On certain vehicles, the fuel filter head may have been manufactured incorrectly. This could allow a fuel tube to disconnect from the filter head, which would cause a leak. Fuel leakage, in the presence of an ignition source, could result in a fire…