Yet another class action lawsuit has been filed against General Motors over alleged oil consumption issues with the Generation IV 5.3L Vortec V8 engine that was offered in a variety of its full-size truck and SUV models.
This latest lawsuit, which is one in a number of class action proceedings filed against GM over the exact same issue, was filed in U.S. District Court for the Eastern District of Missouri. As Car Complaints reports, plaintiffs in this class action suit claim that affected Vortec V8 engines have faulty piston rings that fail to keep oil in the crankcase. This can lead to low oil levels, which can cause unacceptable heat and friction levels in the engine and potentially damage the engine internals. The oil leakage can also foul the spark plugs, causing the engine to misfire and/or shut down completely.
Just as in previous lawsuits over the alleged Vortec V8 oil consumption issues, this filing also claims the engine’s oil pressure relief valve sprays oil directly at the piston skirts, which can overload the rings and allow oil to sneak past into the combustion chamber, where it is then burned off.
Additionally, plaintiffs claim that the vehicle’s built-in oil level monitoring system can mislead the driver, as it does not indicate when the engine oil level has reached a critically low point. While the vehicle will produce a warning on the dash and an accompanying illuminated oil canister icon to warn the driver, these warnings are apparently not adequate enough to properly inform the driver of the current oil level.
This class-action lawsuit involves original owners or lessees of the following vehicles located in the state of Missouri:
- 2010-2014 GMC Sierra
- 2010-2014 GMC Yukon
- 2010-2014 GMC Yukon XL
- 2010-2014 Chevrolet Avalanche
- 2010-2014 Chevrolet Silverado
- 2010-2014 Chevrolet Suburban
- 2010-2014 Chevrolet Tahoe
Numerous other class-action lawsuits have been filed against GM over this issue in the United States, including in Ohio and Washington. A judge tossed out the Ohio suit last November after it was found that GM did not breach the terms of its warranty with the issue due to this being an inherent design defect and not a flaw related to manufacturing or materials.
GM Authority will provide an update on this latest Missouri oil burn lawsuit against GM when more information becomes available.