04:46 20-01-2026

NHTSA probes GM L87 6.2L V8 engine failures and recall effectiveness

NHTSA investigates nearly 600,000 GM vehicles for L87 6.2L V8 engine failures. Learn about the safety risks, owner complaints, and potential recall implications.

A new technical scandal is brewing in the American market: the National Highway Traffic Safety Administration (NHTSA) has opened an investigation into nearly 600,000 General Motors vehicles due to recurring failures of the L87 6.2-liter V8 engine.

Grounds for the Inquiry and Owner Complaints

The regulator has received 36 official complaints from owners reporting engine damage or complete failure. What's particularly critical is that many of these vehicles were already covered by a major recall last year intended to fix the issue. The complaints suggest GM's proposed solution may have been ineffective.

That previous recall covered 721,000 vehicles worldwide, including nearly 600,000 in the United States. Now, the regulator is checking whether dealer service centers addressed the root cause or if the defect is more deeply rooted in the engine's design.

What NHTSA is Investigating

The investigation focuses on vehicles equipped with the gasoline L87 6.2L V8 engine that have shown damage to internal engine components or sudden failure during operation. This kind of malfunction carries a potential safety risk, especially if power loss occurs at high speeds.

Questions are also being raised about the quality of repairs from the earlier recall. Some owners report that dealers refused to acknowledge subsequent failures as warranty issues, attributing them instead to "normal wear and tear."

Implications of the Investigation for GM and the Market

For General Motors, this new NHTSA probe is a sensitive blow following several major recalls in recent years. The outcome could lead to a mandatory expansion of the repair program, new technical directives, or another recall of numerous vehicles.

If regulators confirm the defect was not properly fixed, the manufacturer will need to conduct a deeper analysis and ensure comprehensive technical modifications are implemented.