2021–2026 GM 6.2L L87 Engine Failures: California Lemon Law

If your 2021–2026 Chevrolet Silverado 1500, Tahoe or Suburban, GMC Sierra 1500, Yukon or Yukon XL, or Cadillac Escalade or Escalade ESV has a 6.2-liter L87 V8 that failed—or failed after the 2025 recall repair—you may have California lemon law rights, including a possible repurchase or replacement. NHTSA opened Engineering Analysis EA26005 on August 20, 2026, covering 997,743 vehicles following reports of post-recall engine failures. Even one serious loss-of-power event may warrant an early case review, though it does not automatically establish a lemon law claim.

What NHTSA is investigating

On August 20, 2026, the National Highway Traffic Safety Administration’s Office of Defects Investigation upgraded its review of GM’s L87 engines from a Recall Query (RQ26001, opened January 16, 2026) to a full Engineering Analysis, EA26005. The population is 997,743 vehicles, model years 2021 through 2026 — about 400,000 more than the original recall covered.

The agency is assessing whether the original recall remedy adequately addresses engine failures. By the time EA26005 opened, NHTSA had logged 499 complaints alleging engine failure after recall work—473 after the oil-viscosity remedy and 26 after a full engine replacement. GM reported 6,953 post-remedy complaints to NHTSA. Another 191 reports involved engines built after May 31, 2024, outside the original recall production window, which is why the investigation extends through model year 2026. These are reported complaints, not established findings, and the two complaint totals should not be added together as distinct failures.

An Engineering Analysis examines a possible safety problem and may lead to further recall action. It is not a new recall or a finding that every vehicle investigated is defective. Owners can check their vehicle's status through NHTSA's recall and investigation search.

If your L87 engine seized, lost power, or failed after recall work, request a California lemon law case review now. You do not need to await another breakdown or a new recall to ask whether your documented experience merits an evaluation.

The original recall (NHTSA 25V-274)

In April 2025, GM recalled roughly 597,600 U.S. vehicles (597,571 per GM's NHTSA Part 573 report) with L87 engines built between March 1, 2021, and May 31, 2024: certain 2021–2024 Silverado 1500, Tahoe, Suburban, Sierra 1500, Yukon, Yukon XL, Escalade, and Escalade ESV models. GM traced the failures to two supplier-level manufacturing problems—rod-bearing contamination and crankshafts that were out of specification or incorrectly finished. Either can cause the engine to seize and the vehicle to lose motive power, increasing crash risk. Warning signs may include knocking, a check-engine light, hesitation, or reduced propulsion.

The remedy had two tracks. Dealers inspected each engine. Engines that failed inspection were repaired or replaced. Engines that passed received an oil and filter change to higher-viscosity 0W-40 oil (up from the original 0W-20 specification), a new oil fill cap, and an owner's-manual insert. GM also issued special coverage (program N252494003) for qualifying L87 engine failures of 10 years or 150,000 miles from the original in-service date, whichever comes first, regardless of ownership. Coverage is subject to the bulletin's eligibility requirements; it is not a blanket warranty for every engine complaint.

Why a failed recall fix matters under California’s lemon law

California's lemon law, the Song-Beverly Consumer Warranty Act (Civil Code § 1790 et seq.), focuses on whether an applicable warranty covers a defect that substantially impairs a vehicle's use, value, or safety—and whether the manufacturer, through authorized dealers, failed to repair it after a reasonable number of opportunities. A visit's label—“recall,” “special coverage,” or “warranty”—does not by itself determine whether it counts.

Three provisions do the work:

1. Civil Code § 1793.2(d)(2). If the manufacturer cannot conform the vehicle to its applicable warranty after a reasonable number of attempts, it must promptly replace the vehicle or refund the price paid (less an applicable mileage offset), plus eligible taxes, license and registration fees, and incidental damages such as towing and rental costs. Paid finance charges can be part of restitution under Mitchell v. Blue Bird Body Co. (2000) 80 Cal.App.4th 32.
2. Civil Code § 1793.22(b) — the “Tanner” presumption. Within the first 18 months after delivery or 18,000 miles, whichever occurs first, the law may presume a reasonable number of repair attempts if (a) a defect likely to cause death or serious bodily injury was presented for repair two or more times, (b) the same substantially impairing defect was presented four or more times, or (c) the vehicle was out of service for covered repairs more than 30 cumulative days. Applicable direct-notice requirements also matter. These thresholds concern a statutory presumption, not when you may seek a case review.
3. Civil Code § 1793.2(b). Warranty repairs generally must be completed within 30 days unless the buyer agrees otherwise in writing or delays beyond the manufacturer's control extend the period. If your truck sat at the dealer for five or six weeks awaiting an L87 long-block, document the delay; it may support a warranty-law violation and inform your lemon law analysis, but does not automatically entitle you to a buyback.

Under California's standard jury instruction (CACI 3202), presenting the vehicle to an authorized repair facility for a defect can count as an opportunity even if no work is performed. A recall inspection, oil-change remedy, or return for knocking, a check-engine light, or a seized engine may matter if the records connect the visit to the defect at issue. California law generally requires reasonable repair opportunities, but a serious first failure is reason to obtain advice promptly—not to wait for another dangerous event.

Does GM’s extended engine coverage change the lawsuit deadline?

GM's 10-year/150,000-mile special coverage provides a possible route to qualifying engine repairs, but does not automatically extend the time to sue. Whether that particular coverage qualifies as an “applicable express warranty” for the filing deadline under Code of Civil Procedure § 871.21 is a legal question that depends on the circumstances. Owners should not assume they can wait 10 years to explore lemon law relief.

GM opted in to California’s new lemon law procedures

General Motors is on the California Department of Consumer Affairs list of opted-in manufacturers under the 2025 procedures in Code of Civil Procedure §§ 871.20–871.30 (the AB 1755 / SB 26 framework). For covered GM claims, that means:

• Pre-suit notice is generally required to pursue civil penalties. Under CCP § 871.24, give GM written notice at least 30 days before filing a civil-penalty action. The notice must include your name, accurate VIN, a brief summary of the problems and repair history, and a repurchase or replacement demand. Send it to the designated email address on GM's website or by certified or registered mail, return receipt requested, to the address specified in the owner's manual or warranty booklet. Minor deviations do not automatically disqualify a consumer.
• GM has 30 days after receiving the notice to offer a compliant repurchase or replacement and 60 days from receipt to complete it. Timely compliance can eliminate civil penalties under this procedure. A consumer can seek a buyback without this special notice, but then cannot pursue civil penalties in that action (CCP § 871.24(h)), and vehicle-possession rules still apply.
• Keep the vehicle when sending notice and for at least 30 days after GM receives it. If GM makes a qualifying offer, the law generally requires possession for the full 60 days. The conditions for a later sale and preservation of penalties are specific; get advice before trading in the vehicle.
• The lawsuit clock is shorter for covered claims. Under CCP § 871.21, suit generally must be filed within one year after the applicable express warranty expires and no later than six years after original delivery, subject to statutory tolling for qualifying repair downtime, compliant pre-suit notice (up to 60 days), and other specified periods.

Notice details matter: a letter to the dealer or an email to a general customer-service address may not satisfy § 871.24. The Department of Consumer Affairs explains the newer procedures. An Free case review can help identify the applicable notice, deadline, and next steps; it does not replace required notices or necessary repairs.

What you should do now

1. Put safety first. If the engine loses power, knocks severely, or appears likely to seize, stop driving when safe and arrange an authorized inspection or tow. Do not keep driving just to document another failure.
2. Pull every repair order. You want the recall inspection RO, the oil-change RO, and every visit for engine noise, ticking, knock, oil pressure, check-engine lights, or loss of power. Dealers don’t always print the recall work on a customer copy — ask for it.
3. Write down dates in and out. Record both drop-off and pickup dates when calculating repair downtime, plus the mileage and reported symptoms for each visit. Keep towing and rental receipts.
4. Preserve direct notice to GM when required. For the two- and four-attempt Tanner-presumption paths, the manufacturer's properly disclosed warranty instructions may require direct written notice. Follow applicable notice instructions, but you can request legal review at the same time rather than waiting for another repair.
5. Don't accept a goodwill payment or trade-in offer without advice. Signing a release may affect your Song-Beverly rights.
6. Watch the calendar. Check your original warranty, any special coverage, and the original delivery date. Do not assume that GM's extended engine-repair program extends the lawsuit deadline.

What a repurchase looks like

A Song-Beverly repurchase can return eligible amounts actually paid—down payment and monthly payments, applicable finance charges, sales tax, license and registration fees, and incidental costs such as towing and rentals—and address the loan payoff. For opted-in manufacturers, CCP § 871.27 also addresses dealer-supplied options, service contracts, extended warranties, and GAP, while certain third-party products and prior negative equity may be offset. Learn more about California lemon law buybacks. The manufacturer may deduct a mileage offset: the purchase price multiplied by the miles driven before the first qualifying repair attempt for the engine defect, divided by 120,000 (Civil Code § 1793.2(d)(2)(C)). On a hypothetical $75,000 Sierra Denali with 9,000 miles at that visit, the offset would be $5,625. See the mileage-offset explanation. If a violation was willful, a court may award a civil penalty of up to twice actual damages (§ 1794(c)), subject to applicable notice rules. A prevailing consumer may recover reasonable attorney's fees and costs (§ 1794(d)).

Frequently asked questions

Is EA26005 a new recall for the GM 6.2L L87 engine? No. NHTSA opened Engineering Analysis EA26005 on August 20, 2026. It investigates reports of engine failures after the 2025 recall; it is not itself another recall. Check NHTSA for current VIN-specific recall information.

My engine was replaced under the recall and the new one failed. Could I have a lemon law claim? Potentially. A replacement engine that fails can be significant evidence of a problem that was not corrected. NHTSA recorded 26 complaints of post-replacement engine failures by August 2026. Eligibility depends on the applicable warranty, repair history, and other circumstances.

I only got the oil change, not a new engine. Does that count as a repair attempt? It may. CACI 3202 recognizes a repair opportunity even when the dealer performs no work. Whether a recall visit counts for a particular defect depends on the documented purpose of the visit and the claimed nonconformity.

My truck is a 2025 or 2026. Does the recall cover it? The April 2025 recall did not cover those model years. EA26005 includes vehicles through 2026, and NHTSA reported 191 failures in engines built after the original recall window. A newer L87 owner with engine problems may still have warranty or California lemon law rights even without a recall.

How long do I have to sue GM in California? For claims governed by CCP § 871.21, generally one year after the applicable express warranty expires, and no later than six years after original delivery, subject to statutory tolling. Special coverage does not automatically change those deadlines; obtain a case-specific assessment promptly.

Does California lemon law allow attorney's fees? A prevailing consumer may recover reasonable attorney's fees and costs under Civil Code § 1794(d). The firm's engagement terms and the availability of any fee recovery should be discussed during a case review; an outcome is not guaranteed.

Get a California GM L87 engine failure case review

If your Silverado, Sierra, Tahoe, Suburban, Yukon, or Escalade has an L87 engine problem, request a case review or call (888) 536-6628. We can review your repair orders, warranty status, potential remedies, and statutory notice requirements. You do not need to wait for another dangerous breakdown before seeking an evaluation.

This article is general information, not legal advice. The NHTSA complaint figures above are from the opening of EA26005 in August 2026 and may change.