The latest in a series of lawsuits comes just months after GM recalled nearly 600,000 vehicles in the US
July 10, 2025 at 18:47
- Lawsuit argues GM’s V8 recall doesn’t address the true cause of engine failure.
- Plaintiffs claim GM hid dangerous engine defect and misled customers for years.
- Impacted models include the Silverado 1500, Suburban, Tahoe, and GMC Sierra.
Concerns over General Motors’ V8 engines continue to mount as the automaker faces yet another class action lawsuit, adding to a growing list of legal troubles linked to its powertrains. This most recent complaint, filed last month in Michigan federal court, claims that hundreds of thousands of GM vehicles are equipped with a potentially dangerous engine defect. It’s the latest in a series of lawsuits targeting the same issue.
Read: An Oil Change Won’t Fix GM’s V8 Issues, New Lawsuit Says
According to the filing, the bearings in GM’s 6.2-liter L87 V8 engines are allegedly prone to premature failure, which can lead to serious engine breakdowns, including while the vehicle is in motion. The plaintiff, Brian Markus, argues that GM violated both state and federal consumer protection laws and deliberately concealed the defect from customers for years.
Federal Investigation and Large-Scale Recall
Earlier this year, the National Highway Traffic Safety Administration launched a preliminary investigation into almost 900,000 GM vehicles equipped with the L87 V8 engine. This resulted in a recall of 597,630 trucks and SUVs in late April, including popular models like the Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL.
Much like a separate class action filed in response to this recall, the Michigan lawsuit claims GM’s response has been insufficient and fails to resolve the underlying mechanical issue.
What Is GM Doing About It?
GM’s recall requires dealers to inspect and replace impacted V8 engines as necessary. For those units that pass an inspection, dealerships have been asked to refill the V8 with 0W-40 oil, change the oil filter, and fit a new oil cap. According to Markus, this does nothing to reduce the likelihood of an engine failure.
The lawsuit alleges that GM has known about the defect for years, yet continued to market its vehicles as safe and reliable. It also states that the company’s actions have caused a considerable loss of money and property for vehicle owners and that many would not have purchased the cars or paid considerably less for them had they known about the defect.
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