On August 20, 2026, the National Highway Traffic Safety Administration opened Engineering Analysis EA26005 involving an estimated 997,743 model-year 2021–2026 General Motors trucks and SUVs equipped with the 6.2-liter L87 V8 engine.
The investigation covers certain Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban and Tahoe, and GMC Sierra 1500, Yukon and Yukon XL vehicles. NHTSA is examining loss of propulsion caused by engine failure, including reports involving vehicles that already received the remedy for recall 25V-274 and reports involving L87 engines outside that recall's original production window.
What the record says
NHTSA reported 499 complaints alleging an engine failure after recall work was completed. Of those, 473 followed the oil-viscosity remedy and 26 followed an engine replacement. The agency also reported 191 complaints involving L87 engines outside the earlier recall population. GM reported receiving 6,953 post-remedy complaints.
Important distinction: EA26005 is a federal defect investigation, not a new recall of all 997,743 vehicles. It does not create a new repair appointment or establish that every L87 engine is defective. NHTSA will use the engineering analysis to evaluate the earlier remedy and whether the affected population or corrective action should change.
What dealers and customers should know
What this means for owners: enter the VIN at NHTSA's recall lookup to see whether the existing 25V-274 recall is open. If it is, contact an authorized GM dealer for the free remedy. Keep copies of oil-change receipts, recall paperwork, warning-light photos, diagnostic reports and repair orders. If an engine fails—especially after recall work—report it to both GM and NHTSA so it becomes part of the official record.
What this means for shoppers: confirm that the vehicle actually has the L87 6.2-liter V8 rather than judging by model name alone. Ask a GM dealer to pull the VIN-specific warranty and recall history, obtain maintenance records, and make any purchase decision with the understanding that the federal investigation remains open and could lead to additional action later.
Why it matters
If you own or are shopping for a 2021–2026 GM truck or SUV with the 6.2L L87 V8, check the VIN for recall 25V-274, obtain its service history, keep maintenance records, and document any engine failure with GM and NHTSA. The expanded investigation does not yet provide a new repair.
AI-assisted reporting disclosure
This article was researched and generated with AI-assisted systems using the direct references listed below. Dealership Tech Report applies automated accuracy and risk checks, but recalls, investigations, incentives and market conditions can change. Verify time-sensitive details with the cited primary source before acting.
Recall and investigation coverage applies only to vehicles included by VIN or the official campaign record. Affected populations, remedy timing and instructions can change. Check the exact VIN and current manufacturer or NHTSA guidance before sale, delivery or repair.
Cited references
- NHTSA safety-issue search — investigation EA26005 — Direct reference; development dated Aug. 23, 2026
- Reuters report, August 21, 2026 — Supporting direct reference
- NHTSA VIN recall lookup — Supporting direct reference