A GM Silverado driver faced a harrowing breakdown in subzero winter conditions, the 6.2L V8 engine failing just miles from home—months after receiving the manufacturer’s recall repair. This incident highlights deepening concerns over nearly 600,000 GM vehicles, where post-recall engine failures continue to strand owners nationwide.
Stakes Escalate
The National Highway Traffic Safety Administration (NHTSA) launched Recall Query RQ26001 on January 16, 2026, targeting 597,630 GM vehicles for potential loss of motive power due to engine failure after the recall remedy. This probe stems from 36 Vehicle Owner Questionnaires (VOQs) reporting breakdowns following oil changes or engine replacements. No crashes have occurred, but the failures raise serious safety issues, prompting scrutiny of models from 2021 to 2024, including Silverado, Tahoe, and Escalade.
Engine Origins
GM introduced the L87 6.2L V8 in 2019 for high-performance trucks and SUVs. By April 2025, over 28,000 complaints revealed sediment buildup and crankshaft wear linked to manufacturing flaws at GM plants. Recall 25V-274 followed, affecting 597,571 U.S. vehicles and 721,000 globally, with remedies including higher-viscosity oil and full engine replacements.
Persistent Failures
Complaints persisted despite the fixes. NHTSA noted ongoing issues in remedied vehicles, leading to a class-action lawsuit filed in May 2025 alleging inadequate remedies. By October 2025, the investigation expanded amid reports of stranded drivers. Owners describe engines stalling suddenly, even after dealer services, fueling frustration and service backlogs at dealerships.
Regulatory Scrutiny
NHTSA’s investigation examines the remedy’s effectiveness, including oil upgrades, replacements, part quality, and pre-implementation testing. GM must submit detailed data on inspection protocols and procedures. Experts point to longstanding crankshaft metallurgy defects since 2019, questioning if oil changes or swaps fully resolve root causes.
Broader Implications
This case unfolds as the auto sector transitions to electric powertrains, spotlighting challenges in gasoline engine reliability. Globally, the 721,000-vehicle recall signals manufacturing oversight gaps. A May 2025 class-action suit proceeds in U.S. courts, seeking compensation for damages. Outcomes could mandate expanded remedies, additional recalls, or stricter post-recall monitoring, influencing GM’s reputation, sales, and regulatory compliance worldwide. GM continues supporting affected owners while defending its fixes. The probe’s results will shape how automakers validate remedies, ensuring they prevent rather than prolong defects.
Sources:
“ODI Resume: Recall Query RQ26-001 (Loss of Motive Power Due to Engine Failure Post Recall Remedy).” National Highway Traffic Safety Administration, 16 Jan 2026.
“NHTSA Opens Probe Into About 600,000 GM Vehicles Over Engine Failure Issue.” Reuters / Insurance Journal, 19 Jan 2026.
“GM Recalls Nearly 600K SUVs, Pickups Over Engine Failures.” Automotive Dive / WardsAuto, early May 2025.
“GM Recalling 721,000 Vehicles Over Engine Issue.” Reuters, 29 Apr 2025.