NHTSA Investigation

NHTSA Engineering Analysis: Loss of Motive Power Due to Engine Failure Post Recall… (EA26-005)

Opened August 20, 2026 · General Motors, LLC

✓ Reviewed by Jacob Shayesteh, Esq.·Updated October 2026
EA26-005
NHTSA action
Engineering
Investigation stage
Open
Status
2026
Opened
None
Resulting recall

NHTSA opened an engineering analysis (EA26-005) on August 20, 2026 into loss of motive power due to engine failure post recall remedy in 2021-2026 Cadillac Escalade, 2021-2026 Cadillac Escalade Esv, 2021-2026 Chevrolet Silverado 1500 and 6 more. The investigation is open.

EA26-005 at a glance

NHTSA action numberEA26-005
TypeEngineering Analysis
OpenedAugust 20, 2026
StatusOpen
Vehicles2021-2026 Cadillac Escalade, 2021-2026 Cadillac Escalade Esv, 2021-2026 Chevrolet Silverado 1500, 2021-2024 Chevrolet Suburban, 2025-2026 Chevrolet Suburban 1500, 2021-2026 Chevrolet Tahoe, 2021-2026 GMC Sierra 1500, 2021-2026 GMC Yukon and 1 more
ComponentEngine
ManufacturerGeneral Motors, LLC
Resulting recallNone listed

What is NHTSA investigating in the Cadillac Escalade?

From NHTSA’s investigation summary:

On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001.

This investigation was opened to assess the remedy effectiveness of Recall 25V-274.

ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement.

General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024.

GM cited the root cause as a supplier manufacturing and quality issue.

GM's recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or an engine replacement, based on the results of the remedy inspection procedure.

ODI continues to receive reports of engine failures after the completion of the recall remedy.

To date, ODI has received 499 complaints alleging post-remedy engine failure in vehicles subject to Recall 25V-274, 473 of which involved an oil viscosity change and 26 a complete engine replacement.

Additionally, ODI has received 191 reports of L87 engine failures in engines produced after the production period cited in Recall 25V-274.

GM reported receiving 6,953 complaints of post-remedy engine failure.

ODI is opening this Engineering Analysisto continue investigating complaints of post-remedy engine failure.

ODI is expanding the scope of this Investigation to include engines produced after the production period cited in the recall.

To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

What is an engineering analysis?

Engineering Analysis is the second, deeper stage of a federal defect investigation, opened when a preliminary evaluation finds enough evidence. NHTSA can test vehicles and demand detailed engineering data, and this stage often ends with a recall or a recall request.

Did this investigation lead to a recall?

Not yet. The investigation is still open, and NHTSA has not listed a recall from it. Investigations can take months. If your vehicle already has the problem, document every dealer visit now.

Which vehicles are part of this investigation?

Model yearsMakeModel
2021-2026CadillacEscalade
2021-2026CadillacEscalade Esv
2021-2026ChevroletSilverado 1500
2021-2024ChevroletSuburban
2025-2026ChevroletSuburban 1500
2021-2026ChevroletTahoe
2021-2026GMCSierra 1500
2021-2026GMCYukon
2021-2026GMCYukon XL

What are Cadillac Escalade owners reporting to NHTSA?

NHTSA’s public database lists 8,495 owner complaints filed since 2020 for the vehicles in this investigation (all components). Complaints are unverified owner reports.

What should owners do?

  1. Check your VIN at nhtsa.gov/recalls for any open recall on your vehicle.
  2. If you have the problem NHTSA is investigating, take the vehicle to a dealer now and get a repair order, even if the dealer cannot find anything.
  3. Keep a log of every time the problem happens: date, mileage and what happened. Photos and videos help.
  4. File your own complaint at nhtsa.gov/report-a-safety-problem. Owner complaints are what start and expand investigations.
  5. If the problem keeps coming back, talk to a lemon law attorney.

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Can a recall or defect investigation make my car a lemon in California?

Not by itself. What matters is whether a covered defect keeps coming back or keeps your vehicle at the dealer, and a federal investigation or recall is strong evidence that the problem is real.

Under California’s Song-Beverly Consumer Warranty Act, a manufacturer that cannot fix a warranty defect that substantially impairs a vehicle’s use, value or safety within a reasonable number of attempts may have to repurchase or replace it (Civ. Code 1793.2(d)). Within the first 18 months or 18,000 miles, the law presumes a reasonable number of attempts after two repairs of a defect likely to cause death or serious injury, four repairs of the same defect, or more than 30 days out of service (Civ. Code 1793.22(b)).

An owner who prevails can recover reasonable attorney fees and costs from the manufacturer (Civ. Code 1794(d)). You pay nothing, win or lose. We are paid only if you win, and the manufacturer pays our fees, including in settlements. If a case is lost, our firm covers the costs.

In our cases, a recall repair visit counts as a repair attempt, and it's strongest when the owner complained about the problem before the recall came out. A recall shows the defect is real and that enough owners reported it for the manufacturer to issue a fix.

The biggest mistake I see is waiting too long. The mileage offset starts at your first repair visit for the problem, so the sooner you take it in, the better. If the problem comes and goes, take it in when it happens. You can't go back to that date later.

If you get a recall notice, call a lemon law attorney right away. You may have taken the car in for the same problem before and forgotten, or there may be other recalls related to it.

Jacob Shayesteh, Esq. (SBN 362320), Founder and Managing Attorney. Quotes lightly edited for clarity. Prior results do not guarantee a similar outcome.

Frequently asked questions

Does the recall fixing my car mean I have no case?

Not necessarily. Even if the recall repair fixed it, you may still have a case, and a car that's a year or more old can still qualify.

Do used cars qualify for California lemon law?

We take certified pre-owned, demo and dealer vehicles. Since the California Supreme Court's Rodriguez decision in 2024, ordinary used cars generally do not qualify.

How long does a recall lemon law case take?

Recall-related cases typically resolve in one to three months from your first call. Prior results do not guarantee a similar outcome.

What does a lemon law attorney cost?

You pay nothing, win or lose. We are paid only if you win, and the manufacturer pays our fees, including in settlements. If a case is lost, our firm covers the costs.

Sources

Jacob Shayesteh, Esq., Founder and Managing Attorney of America’s Lemon Lawyer (Wynn Law Group, APC). Licensed by the State Bar of California, No. 362320. His practice focuses on California lemon law under the Song-Beverly Consumer Warranty Act.

State Bar of California license record · Avvo · Martindale-Hubbell · Lawyers.com · LinkedIn · Our attorneys

Attorney advertising. America’s Lemon Lawyer is a trade name of Wynn Law Group, APC. Responsible attorney: Jacob Shayesteh, Esq. (SBN 362320). This page reports public NHTSA data and is general information, not legal advice. Not affiliated with NHTSA or any vehicle manufacturer. Prior results do not guarantee a similar outcome.

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