NHTSA Expands GM V8 Probe to 997,743 Vehicles After 499 Post-Recall Failures
Updated
Updated · Motor1 · Aug 21
NHTSA Expands GM V8 Probe to 997,743 Vehicles After 499 Post-Recall Failures
3 articles · Updated · Motor1 · Aug 21
Summary
997,743 GM vehicles are now covered by an expanded NHTSA engineering analysis of 6.2-liter L87 V8 failures, widening scrutiny beyond last year’s recall.
499 complaints said recalled vehicles still suffered engine failures after GM’s remedy, including 473 that received higher-viscosity oil and 26 that got replacement engines.
191 additional failure reports involved L87 engines built after May 2024, extending the probe to newer production outside the original recall period.
GM had recalled nearly 600,000 vehicles last year after a January 2025 NHTSA inquiry, and the automaker has since logged 6,953 post-remedy complaints.
Across earlier investigations, GM received 28,102 field complaints tied to the engine; more than half alleged loss of motive power, raising crash risk.