A lawsuit has been brought against General Motors (GM) for alleged problems with its 6.2L V8 L87 engine, which is used in a number of the company’s popular models. The suit alleges that these engines have defective parts that could cause them to fail unexpectedly and dangerously, and the failures often result in expensive repairs for the customers.
Allegations of Engine Defects:
In April 2025, a class action lawsuit was filed against the L87 engine because of its connected rod bearings. It is claimed by plaintiffs that these bearings may unexpectedly fail, and the result could be the engine seizing or the rod piercing the engine block. Such events surprise people, causing power to be lost right away and raising concerns about accidents. The lawsuit claims that the fault is because the wrist pin and circlip, important parts needed for the engine, were installed improperly or were not present. If these parts break, the wrist-pin can shift, which may result in engine damage.
Affected Vehicles:
Between 2019 and 2024, the L87 engine was installed in different GM models.
- Chevrolet Silverado 1500
- Chevrolet Tahoe
- Chevrolet Suburban
- GMC Sierra 1500
- GMC Yukon
- GMC Yukon XL
- Cadillac Escalade
- Cadillac Escalade ESV
Some users have found their vehicles’ engines to be seized, with metal parts found inside the oil and experiencing loss of power without warning.
GM’s Response and NHTSA Investigation:
Currently, no official recall for the L87 engine has been made by GM. Nevertheless, the NHTSA carried out an initial inquiry in January 2025 involving nearly 877,000 cars using this engine. The goal of the investigation is to determine how severe the engine failures reported are. GM is aware of the problem and is currently trying to find answers, one of which is replacing engines. Some owners fitted with new engines have stated that their vehicles perform worse and consume more fuel, leading to new events in court.
Legal Implications and Consumer Rights:
The lawsuit claims that GM held information about engine issues but did not share it with owners. The plaintiffs state that GM’s actions break consumer protection laws and have resulted in financial losses for vehicle owners. Allegations of consumer deception are also central to the Tesla Odometer Lawsuit, where inflated mileage readings reportedly shortened warranties and imposed unexpected repair costs on owners. If you are having problems with your L87 engine, it is important to save details of all your communication and repair work with the dealership. They can contact lawyers to check what state lemon laws allow and to participate in the class action lawsuit filed.
Conclusion
Allegations involving the L87 engine at GM focus on concerns about how safe GM vehicles are and how much the manufacturer takes responsibility for their issues. Those whose ships are affected should be informed about new developments and learn about their right to recover from any damage.
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Read related cases in our Consumer & Product Lawsuits section.
