2021-2024 Suburban recalled for L87 engine failure, brake warning defect & wheel lock-up. Does your Suburban qualify for a California lemon law buyback?
The Chevrolet Suburban is the longest-running nameplate in automotive history and the vehicle millions of families rely on for the longest road trips, the heaviest towing jobs, and the school run that never seems to end. When you paid full-size SUV money for the Suburban, you were buying confidence — not wondering whether the engine would survive the drive home.
Owners of 2021–2024 Chevrolet Suburban models have reported, and federal regulators have confirmed, a pattern of serious defects in this generation. The most critical is NHTSA recall 25V274: 22,169 Suburban units built with the 6.2L V8 L87 engine between 2021 and 2024 are affected by manufacturing defects in connecting rod and crankshaft components that can cause the engine to fail — completely and without adequate warning — while the vehicle is moving. GM's own investigation identified 28,102 field complaints or incidents potentially related to L87 engine failure, including 14,332 involving allegations of loss of propulsion and 13 alleged crashes. NHTSA is continuing to investigate L87 failures outside the recall's build window.
A separate recall (24V674) covers 65,411 Suburban units for a brake control module software defect that prevents the brake fluid warning light from activating when fluid is leaking — a direct violation of the federal brake safety standard. And a third recall (26V085) covers 2022 model year Suburbans for rear wheel lock-up caused by a transmission control valve that wears prematurely.
If your Suburban has been back to the dealer more than once for any of these problems — or the dealer told you it couldn't find anything wrong — this page explains the documented defects, the symptoms owners report, and what California law says you may be entitled to.
The issues owners report most, ranked by severity — each one verified against a cited NHTSA source.
Engine knocking or sudden shutdown while driving; metal shavings in oil; vehicle loses power at highway speeds; engine seized; check engine light; oil pressure warning
Brake warning light does not illuminate when brake fluid is leaking; brake pedal becomes soft or spongy without warning; loss of braking effectiveness
Sudden increase in steering effort at startup or while driving at low speeds; steering wheel becomes heavy and difficult to turn; power steering warning light may or may not illuminate
Engine stalls without warning while driving or at a traffic light; vehicle loses power; may restart after stopping or fail to restart; sudden loss of propulsion at highway speed
Harsh or unexpected gear shifts; rear wheels lock up momentarily during deceleration or downshifting; loss of vehicle control; service engine light; reduced propulsion message
Rear end feels loose or pulls to one side; clunking or popping from rear suspension; visible rear wheel misalignment; vehicle handling deterioration
A settled Margarian Law case on this exact model, published with the actual settlement math.
Open any defect for the symptoms and why it matters for a California lemon-law claim. Each is tied to a cited NHTSA source.
Engine knocking or sudden shutdown while driving; metal shavings in oil; vehicle loses power at highway speeds; engine seized; check engine light; oil pressure warning
Safety recall with 22,169 Suburban units; 28,102 field complaints across GM platform; 13 alleged crashes. Engine failure while driving is a core lemon-law safety defect. Many owners report VINs excluded from recall despite identical symptoms — a strong basis for individual claims.
Dealer inspection; if failed: engine repair or replacement. Vehicles passing inspection receive higher-viscosity oil, new oil fill cap, oil filter replacement, and owner's manual insert
Brake warning light does not illuminate when brake fluid is leaking; brake pedal becomes soft or spongy without warning; loss of braking effectiveness
FMVSS noncompliance recall affecting 65,411 Suburban units. Brake failure without warning is a primary safety defect. If OTA update was not applied and vehicle subsequently experienced brake degradation, this supports a lemon-law claim.
eBCM software update via over-the-air (OTA) update or dealer reprogramming, at no charge
Sudden increase in steering effort at startup or while driving at low speeds; steering wheel becomes heavy and difficult to turn; power steering warning light may or may not illuminate
Safety recall on full-size SUV where loss of steering assist poses crash risk. If a customer experienced repeated loss of power steering before recall remedy was applied — particularly during parking lot maneuvers or highway entry — this is a qualifying defect.
Update EPS module software via OTA or dealer, at no charge
Engine stalls without warning while driving or at a traffic light; vehicle loses power; may restart after stopping or fail to restart; sudden loss of propulsion at highway speed
Stalling at highway speeds is a core safety defect. One NHTSA complainant noted the dealer 'stocks the part' due to frequency. 14,939 total units affected. Repeat stalling events before remedy applied support a lemon-law claim.
Dealer replaces the fuel pump power control module at no charge
Harsh or unexpected gear shifts; rear wheels lock up momentarily during deceleration or downshifting; loss of vehicle control; service engine light; reduced propulsion message
Rear wheel lock-up while driving is a catastrophic safety event. Two separate recall campaigns (26V085 for 2022 gas, 24V797 for 2021 diesel) confirm repeated manufacturing quality failure. If a customer experienced lock-up or entered limp mode multiple times before remedy, strong lemon-law basis.
Install updated Transmission Control Module (TCM) software that monitors valve wear and limits transmission to 5th gear ~10,000 miles before lock-up risk, illuminating service engine light and reduced propulsion message
Rear end feels loose or pulls to one side; clunking or popping from rear suspension; visible rear wheel misalignment; vehicle handling deterioration
Fractured suspension bolt can cause sudden wheel misalignment and loss of vehicle control. Affects 2023 MY Suburban and other GM full-size SUVs. If customer had rear-end handling complaints dismissed before recall, supports a lemon-law nonconformity history.
Dealer replaces both rear suspension outer control arm bolts (pre-shipped part #11603317) at no charge
Radio screen goes black or blank; infotainment system randomly reboots while driving; audio cuts out; system unresponsive; OTA update hangs showing 'Download Paused'; battery drain from failed OTA update
GM acknowledged via multiple TSBs that it is 'working on software improvements' and advised dealers not to replace hardware — directing customers to wait. Persistent infotainment failure affecting navigation, backup camera, and ADAS display after multiple repair attempts supports a lemon-law functional nonconformity claim.
Radio software update (dealer or OTA); SDGM reprogramming for battery-drain variant; GM issued Customer Satisfaction Program N222371310 and multiple TSBs (PIT6393 series, 22-NA-096) directing software updates and educating dealers not to replace hardware
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Transmission control valve susceptible to excess wear causing gradual pressure loss; may cause harsh shifting and momentary rear wheel lock-up during downshift from 8th gear.
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The connecting rod and/or crankshaft engine components in vehicles equipped with the 6.2L V8 (RPO L87) may have manufacturing defects (sediment contamination on oil galleries; out-of-spec crankshaft dimensions) that lead to engine bearing damage, engine damage, and engine failure.
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Same transmission control valve wear mechanism as 26V085 but affecting 2021 MY diesel-equipped Suburban (Duramax LM2 3.0L); included for completeness.
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Software/calibration mismatch in the eBCM causes the system to fail to detect and notify the driver of a brake fluid leak before the level becomes critically low, violating FMVSS No. 135.
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Supplier-supplied rear suspension outer control arm bolts may not have been properly heat-treated, weakening them and causing potential fracture with use.
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Supplier manufacturing defect in the fuel pump power control module can cause the fuel pump to fail or operate intermittently, interrupting fuel flow to the engine.
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A software defect in the EPS module may cause loss of power steering assist at startup or while driving.
Every item below comes from this vehicle's documented defects. The more you recognize, the more a free case review is worth your time.
California's Song-Beverly Consumer Warranty Act — the lemon law — applies to new vehicles purchased or leased in California that have a defect covered by the manufacturer's express warranty which cannot be fixed in a reasonable number of repair attempts.
You may be entitled to a full replacement vehicle or a complete buyback — including purchase price, taxes, registration fees, and finance charges, minus a mileage offset for use before the defect first appeared — if any of the following applies:
These are general guidelines, not guarantees. The specific facts of your repair history matter. This is not legal advice. Speaking with a California lemon law attorney — typically at no cost for an initial consultation, and at no out-of-pocket cost if you have a valid claim, because the manufacturer pays attorney fees if you win — is the right next step.
“Could not duplicate” doesn't mean the defect isn't real. Here's exactly what to do to protect a potential California lemon-law claim.
Document the moment it happens. Photos, video, and screenshots of any warning lights — with the date and the mileage.
Get a repair order every visit — even “found nothing.” That paperwork is the foundation of a claim.
Check your VIN at nhtsa.gov/recalls. Note any recall that has no available remedy yet.
Track your out-of-service days. California law counts the cumulative days your vehicle spends in the shop.
Keep loaner & rental records. Alternate-transport paperwork during long repairs matters.
Save everything in one place. Symptoms, dates, repair orders, and every repeat visit — the intermittent ones especially.
Dealers mark repair orders 'no trouble found' or 'unable to duplicate' more often than you might expect — particularly for intermittent problems like engine knocking that comes and goes, or an infotainment screen that reboots but always seems fine when the tech looks at it. That notation is not the end of the road. Under California law, it still counts as a repair attempt. Here is how to build the strongest possible record:
1. Write it down before every visit. Create a short written description of the problem — exact date, time, speed, road conditions, which lights came on (or failed to come on), and how long the symptom lasted. Hand it to the service advisor and ask them to include it verbatim on the repair order.
2. Insist the repair order reflects your complaint accurately. The repair order is the legal record of the visit. If it says 'no defect found' but does not describe what you reported, ask for a correction before you sign.
3. Ask about specific open recalls by campaign number. For an L87 engine concern on a 2021–2024 Suburban, ask about 25V274. For brake warning issues on a 2023–2024 Suburban, ask about 24V674. For transmission harshness on a 2022 Suburban, ask about 26V085. Get the recall inspection result documented — not just a note that 'recall was applied.'
4. Save every repair order and every loaner agreement. California's lemon law counts days out of service (including days in a loaner) toward the 30-day cumulative threshold that can trigger a buyback right independent of the number of repair attempts.
5. Return every time a symptom recurs. If the engine knock comes back after the recall inspection and oil-change remedy, that is a new repair attempt. If the infotainment screen goes black again after a software update, that is another repair attempt. Each visit to the dealer adds to your documented history.
6. Do not accept a verbal answer. If the dealer says 'we checked it and it's fine,' ask for that in writing on the repair order. A verbal 'everything's okay' disappears; a written repair order does not.
The 2021–2024 Chevrolet Suburban's defect profile is dominated by a single, serious issue: an engine that can fail catastrophically without sufficient warning while carrying a full family at highway speed. The L87 recall (25V274) did not emerge quickly — GM received 28,102 related complaints before the recall was finally issued, and NHTSA's follow-on investigation suggests the problem may be broader than the recall's build window covers. 22,169 Suburban units are confirmed affected, but NHTSA investigation EA25007 into vehicles outside that window remains open.
Compounding this is a brake system recall that affected 65,411 Suburban units for failing to warn drivers of fluid loss — a direct federal safety standard noncompliance. And the transmission valve wear that can lock up the rear wheels is covered by two separate recall campaigns, which tells you the root cause was not isolated.
For a vehicle that costs what a Suburban costs, this is not an acceptable record. If your Suburban is still not right after multiple dealer visits, California's lemon law exists precisely for situations like yours.
— The Margarian Law team
If your 2021–2024 Chevrolet Suburban has been to the dealer more than once for an engine failure, brake system concern, transmission fault, steering problem, or persistent software issue — and your Suburban still is not right — you may have a lemon law claim under California's Song-Beverly Act. The manufacturer is responsible for repairing a defect within a reasonable number of attempts, and if they cannot, you have the right to a replacement or buyback. Contact Margarian Law for a free case evaluation to find out whether your Suburban qualifies.
Yes. NHTSA safety recall 25V274 covers 2021–2024 Chevrolet Suburban models equipped with the 6.2L V8 L87 engine. Manufacturing defects in the connecting rod and crankshaft components — including sediment contamination in oil galleries and out-of-specification crankshaft dimensions — can cause engine bearing damage, engine failure, and sudden loss of propulsion while driving. 22,169 Suburban units are included in this recall. The remedy is a dealer engine inspection; vehicles that fail inspection receive engine repair or full replacement at no charge. Owner notification began June 2025. Additionally, NHTSA opened a follow-on investigation (EA25007) into L87 engine failures on vehicles outside the recall's build window. If you own a 2021–2024 Suburban with the 6.2L engine, check your VIN at nhtsa.gov or contact your Chevrolet dealer.
Yes, and it is a documented safety defect. If your 2021–2024 Suburban is equipped with the 6.2L V8 L87 engine, sudden loss of propulsion at highway speed is one of the core symptoms of recall 25V274. GM's own investigation identified 28,102 field complaints potentially related to L87 engine failure — including 14,332 specifically involving loss of propulsion and 13 alleged crashes — before the recall was issued. Have your vehicle towed to a Chevrolet dealer and specifically request the 25V274 recall inspection. Keep a copy of the repair order. If the dealer says it cannot find a problem, that visit still counts as a documented repair attempt under California's lemon law. If the problem recurs, or if the repair does not hold, contact a lemon law attorney to evaluate whether your Suburban qualifies for a buyback or replacement.
Whether any specific Suburban qualifies as a lemon depends on its individual repair history, not just its model year. What is documented for the 2022 and 2023 Suburban generation: the 2022 model year is covered by recall 26V085 for rear wheel lock-up caused by a worn transmission control valve (7,616 units), and the 2023 model year is covered by recall 24V674 for eBCM brake warning failure (65,411 Suburban units). Both model years are also within the L87 engine recall window if equipped with the 6.2L V8. If your 2022 or 2023 Suburban has needed the same repair more than once, or has been out of service for 30 or more cumulative days, it may qualify under California's Song-Beverly Act. A free consultation with a lemon law attorney is the best way to find out.
Yes. If you drive a 2022 Chevrolet Suburban with the gas-powered 10-speed automatic transmission built between May 10 and July 19, 2022, your vehicle may be covered by NHTSA recall 26V085. A transmission control valve that is susceptible to excess wear can cause gradual pressure loss, which may trigger momentary rear wheel lock-up during a downshift from eighth gear. 7,616 Suburban units are included. If you drive a 2021 Suburban with the diesel engine, companion recall 24V797 covers the same valve defect in 2,525 Suburban units. The remedy for both is a TCM software update that monitors valve wear and limits the transmission to fifth gear when lock-up risk is approaching. That gear-limiting behavior may be noticeable in normal driving. If you experienced rear wheel lock-up before the recall was performed, or the transmission symptom has returned, consult a California lemon law attorney.
If your Chevrolet Suburban has had two or more dealer visits for a safety defect — like engine failure, brake warning failure, or rear wheel lock-up — or four or more visits for any single defect without a lasting fix, or has accumulated 30 or more days out of service for warranty repairs, you may have a lemon law claim under California's Song-Beverly Consumer Warranty Act. Start by gathering all your repair orders: every service record from every dealer visit, in order. Make sure each repair order clearly states your complaint. Then contact a California lemon law attorney for a free evaluation. Under Song-Beverly, if your claim is valid, GM pays your attorney's fees — you do not pay out of pocket. The sooner you act, the better: lemon law claims in California generally must be filed within four years of when you knew or should have known the vehicle could not be fixed.
GM has acknowledged this problem through multiple technical service bulletins. TSB PIT6393 (revised through at least revision J as of mid-2026) and TSB 22-NA-096 address blank or black screens, random reboots, audio loss, and failed OTA updates on the Google Built-In IOK infotainment platform used in 2022–2025 Chevrolet Suburban. The bulletins direct dealers first to perform a software update, and notably instruct dealers not to replace the radio hardware — instead telling them to inform customers that GM is 'developing software improvements.' That guidance has now been revised more than nine times, which signals the underlying defect has not been resolved. If your Suburban's infotainment system has been serviced more than once for the same blank-screen or reboot symptom without a lasting fix, this pattern of failed repairs may support a California lemon law claim, because persistent failures affecting the backup camera and navigation system can impair the vehicle's safe use and value.
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