Latest Update: As of September 2026, the core Harrison, et al. v. General Motors LLC lifter class action (Case No. 2:21-cv-12927, U.S. District Court for the Eastern District of Michigan) remains pending, with no class certified and no settlement reached for the 2014–2021 AFM/DFM lifter claims. The most recent confirmed development came in late February 2026, when U.S. District Judge Laurie J. Michelson denied plaintiffs’ motion to split the case into separate AFM and DFM actions, keeping the litigation consolidated. The class certification motion, originally slated for late 2025, has slipped into 2026 with no ruling yet reported. Owners should note this is separate from an earlier, already-resolved case covering 2011–2014 Vortec 5.3L engines, which reached a $150 million settlement with checks distributed starting in December 2025.
Last updated: September 2026
The GM engine failure lawsuit is one of the most significant auto defect cases in recent memory, and in 2026 it is still very much active. Hundreds of thousands of GM truck and SUV owners have reported catastrophic engine failures tied to two defective fuel management systems built into some of the most popular vehicles on American roads.
If you own a Chevy Silverado, GMC Sierra, Cadillac Escalade, or similar GM vehicle built in the last decade, you may already be living this problem. Lifter failures, engine seizures, excessive oil consumption, and sudden power loss are the most common complaints.
This guide covers everything you need to know: what caused the defect, which vehicles qualify, how much compensation owners are seeing, and how to take action in 2026.
One number to keep in mind right away: NHTSA has received well over 10,000 complaints tied to GM’s AFM and DFM engine systems. That is not a small problem. That is a national product safety failure.
What Is the GM Engine Failure Lawsuit?
The GM engine failure lawsuit refers to a series of class action and individual product liability lawsuits filed against General Motors over defective engines in its trucks and SUVs. The lawsuits center on GM’s 5.3L and 6.2L V8 engines, which are equipped with fuel-saving technology that causes widespread mechanical failure.
The core allegation is straightforward. GM knew its fuel management systems were defective. It sold vehicles with those systems anyway. Then it left owners to pay for repairs that cost thousands of dollars.
Multiple lawsuits have been consolidated in federal court. The cases name GM as the defendant and allege violations of consumer protection laws, breach of warranty, and fraudulent concealment.
| Key Case Detail | Information |
|---|---|
| Defendant | General Motors LLC |
| Primary Court | U.S. District Court (Multiple Districts) |
| Engine Types Involved | GM 5.3L V8, GM 6.2L V8 |
| Fuel Systems Named | AFM (Active Fuel Management), DFM (Dynamic Fuel Management) |
| Primary Claims | Product liability, breach of warranty, fraud |
| Case Status (2026) | Active, ongoing litigation and settlement negotiations |
The lawsuits argue that GM issued Technical Service Bulletins acknowledging the problems internally but never issued a full recall. That is a pattern courts have found damaging in prior auto defect cases.
What Is the General Motors Engine Defect Lawsuit Based On?
The general motors engine defect lawsuit is built on the claim that GM designed and sold a fundamentally flawed engine system without disclosing the risks to buyers.
GM’s V8 engines use a cylinder deactivation system to improve fuel economy. On paper, that sounds smart. In practice, the design created a mechanical failure chain that has left thousands of owners stranded.
The defect centers on the AFM and DFM systems, which shut down half the engine’s cylinders during light driving loads. The components that control this process, specifically the lifters, solenoids, and valley cover gaskets, wear out far faster than they should.
When a lifter fails, it can send metal shavings through the entire engine. That kind of damage does not just mean a $200 part. It means an engine replacement that can cost anywhere from $8,000 to $15,000.
| Defect Category | What It Means |
|---|---|
| Lifter Failure | Collapsed lifters disrupt valve timing and cause metal-on-metal wear |
| Oil Consumption | Engines burn through oil rapidly, causing low oil pressure |
| Valley Cover Failure | Gasket failure leads to oil leaks and contamination |
| Engine Seizure | Complete engine lock-up requiring full replacement |
| AFM Solenoid Failure | Solenoid malfunction causes check engine lights and rough running |
The lawsuits argue GM had internal data showing these failure rates were abnormally high. Choosing not to fix the design while continuing to sell vehicles is the heart of the fraud claim.
What Is the GM AFM Lifter Failure Lawsuit?
The GM AFM lifter failure lawsuit is the most documented subset of the broader GM engine defect litigation. AFM stands for Active Fuel Management, and it is GM’s original cylinder deactivation system used across millions of trucks and SUVs sold from 2007 through 2021.
The lifters are the mechanical components that control when each cylinder fires. In AFM mode, the system uses hydraulic lifters that can collapse to deactivate specific cylinders. These collapsed lifters are the problem.
They fail. Frequently. Sometimes as early as 50,000 miles.
When a lifter collapses at the wrong time or fails to extend, the pushrod bends, the rocker arm breaks, and metal debris spreads through the engine oil. What starts as a single failed lifter can cascade into a full engine failure within hours of driving.
| AFM Lifter Failure Timeline | Detail |
|---|---|
| First failures reported | As early as 2010 (model year 2009 vehicles) |
| Peak complaint volume | 2018 to 2022 |
| Average failure mileage | 60,000 to 100,000 miles |
| Typical repair cost | $3,500 to $12,000+ |
| GM TSBs issued | Multiple, but no recall ever issued |
GM issued Technical Service Bulletins directing dealers to replace failed lifters. But a TSB is not a recall. Owners had to discover the problem themselves and pay for it out of pocket. That is exactly why the lawsuits exist.
What Is the Active Fuel Management Defect Lawsuit?
The active fuel management defect lawsuit targets the system-level decision GM made to prioritize fuel economy ratings over mechanical reliability.
AFM technology reduces a V8 engine to running on four cylinders during highway cruising. The intent was to meet federal fuel economy standards without downsizing the engine. Think of it like a car trying to be both a sports car and a hybrid at the same time. That kind of compromise tends to create problems.
The lawsuit argues that GM:
- Knew the AFM system caused accelerated wear on lifters and related components
- Failed to disclose this risk to buyers at the point of sale
- Continued selling AFM-equipped vehicles long after internal reports flagged the defect
- Refused to issue a recall despite thousands of NHTSA complaints
The plaintiffs’ position is that had buyers known about the failure risk, they either would not have purchased these vehicles or would have demanded a significant price reduction.
Courts in several states have allowed these claims to move forward. That signals judges believe the underlying fraud argument has enough merit to proceed to discovery and potential trial.
Key Takeaway: GM’s Active Fuel Management system is at the center of the most legally significant defect claims. The lawsuit argues GM concealed known failures to protect its fuel economy numbers.
What Is the GM DFM Engine Problems Lawsuit?
The GM DFM engine problems lawsuit is the newer wave of litigation targeting GM’s Dynamic Fuel Management system, which replaced AFM in 2019 and later model year trucks and SUVs.
DFM is a more aggressive version of the same concept. While AFM deactivates four of eight cylinders, DFM can operate in up to 17 different cylinder combinations. More flexibility in theory. More failure points in practice.
Owners of 2019-and-newer GM trucks equipped with the 5.3L and 6.2L DFM engines are now reporting the same symptoms as AFM owners: collapsed lifters, oil consumption, rough idle, and engine failure.
| DFM vs. AFM Comparison | AFM System | DFM System |
|---|---|---|
| Years in production | 2007 to 2021 | 2019 to present |
| Cylinder deactivation modes | 1 (4-cylinder mode) | Up to 17 combinations |
| Engine sizes affected | 5.3L, 6.2L | 5.3L, 6.2L |
| Failure symptoms | Lifter failure, oil loss, engine knock | Same, plus additional solenoid failures |
| Litigation stage (2026) | Active, some settlements | Early-to-mid stage litigation |
The DFM lawsuits are several years behind the AFM cases in terms of legal progress, but they are gaining momentum fast. Owners of 2019 to 2024 GM trucks should pay attention because this litigation could result in significant settlements in the next two to three years.
Who Qualifies for the GM Engine Failure Lawsuit?
You may qualify for the GM engine failure lawsuit if you own or previously owned a GM vehicle with a defective AFM or DFM engine system that experienced failure, required costly repairs, or suffered documented engine damage.
Eligibility is not limited to current owners. If you sold a vehicle at a loss because of an undisclosed engine defect, you may still have a valid claim.
The basic qualifying criteria include:
- You own or owned a GM vehicle with a 5.3L or 6.2L V8 engine
- Your vehicle’s model year falls within the covered range (varies by specific lawsuit)
- Your vehicle was equipped with AFM or DFM technology
- You experienced symptoms or paid for repairs related to the defect
| Eligibility Factor | Details |
|---|---|
| Vehicle brands covered | Chevrolet, GMC, Cadillac, Buick |
| Engine types | 5.3L EcoTec3 V8, 6.2L EcoTec3 V8 |
| Model years (AFM cases) | 2007 to 2021 (varies by lawsuit) |
| Model years (DFM cases) | 2019 to 2024 |
| Residency requirement | U.S. residents, varies by specific case |
| Repair receipts needed | Helpful but not always required |
Claimants who paid out of pocket for repairs have the strongest cases. Documentation, including repair receipts, dealer visit records, and NHTSA complaint filings, significantly strengthens your claim.
What Is the Chevy Engine Failure Class Action?
The Chevy engine failure class action refers specifically to lawsuits naming Chevrolet vehicles as the primary affected products. Silverado trucks and Suburban and Tahoe SUVs make up the largest portion of Chevy-specific complaints.
Chevy’s Silverado 1500 is one of the best-selling trucks in the United States. GM installed the AFM and DFM systems in nearly every V8 Silverado sold for over a decade. That means millions of potential class members.
The class action consolidates individual claims into one legal action. This benefits consumers because it forces GM to respond to the allegations at scale rather than quietly settling one complaint at a time.
Common Chevy vehicles named in the lawsuit include:
- Chevrolet Silverado 1500 (2007 to 2024)
- Chevrolet Suburban (2007 to 2024)
- Chevrolet Tahoe (2007 to 2024)
- Chevrolet Colorado (limited AFM models)
Key Takeaway: The Chevy Silverado 1500 accounts for the largest single pool of potential claimants in the GM engine failure litigation, making this the largest consumer auto defect class action currently active in 2026.
What Is the GMC Truck Engine Lawsuit?
The GMC truck engine lawsuit runs parallel to the Chevy class action and involves the same underlying engine defects. GMC is a division of General Motors, and its trucks use the same 5.3L and 6.2L V8 platforms.
GMC Sierra and Yukon owners have filed thousands of NHTSA complaints and joined the class action lawsuits in large numbers. The experiences are nearly identical to Chevy owners: sudden lifter failure, excessive oil burning, and engine damage that appeared well before any reasonable end-of-life mileage.
GMC vehicles most commonly named in the lawsuit:
- GMC Sierra 1500 (2007 to 2024)
- GMC Yukon (2007 to 2024)
- GMC Yukon XL (2007 to 2024)
- GMC Denali trim levels (particularly 6.2L equipped)
| GMC Vehicle | Engine Affected | Complaint Volume (NHTSA) |
|---|---|---|
| Sierra 1500 | 5.3L, 6.2L V8 | Very high |
| Yukon | 5.3L V8 | High |
| Yukon XL | 5.3L V8 | High |
| Sierra Denali | 6.2L V8 | Moderate to high |
Denali-trim buyers are particularly frustrated. These vehicles sell for $60,000 to $80,000 or more. Experiencing complete engine failure at 80,000 miles on a premium truck is not what anyone expects.
What Is the Cadillac Engine Failure Lawsuit?
The Cadillac engine failure lawsuit targets GM’s luxury division, where the same defective engines were installed in high-end SUVs sold at premium prices.
Cadillac Escalade owners have been among the most vocal in the litigation. The Escalade is one of the most expensive mass-market SUVs in America. A new Escalade starts at around $80,000 and can push well past $100,000 in premium trims. Engine failure on a vehicle at that price point creates enormous financial and legal pressure.
The AFM and DFM systems are present in the Escalade’s 6.2L V8 engine. The failure patterns are identical to those seen in Chevy and GMC trucks.
Cadillac-specific vehicles involved:
- Cadillac Escalade (2007 to 2024)
- Cadillac Escalade ESV (2007 to 2024)
- Cadillac CT6 (selected 6.2L models)
The higher purchase price of Cadillac vehicles actually works in plaintiffs’ favor during settlement negotiations. Diminished value claims are stronger when the base vehicle cost more, and repair bills as a percentage of vehicle value are more extreme.
Key Takeaway: Cadillac Escalade owners have some of the strongest individual claims in the GM engine failure litigation due to high vehicle costs and documented failures on premium-priced products.
What Is the GM Engine Failure Settlement Amount?
The GM engine failure settlement amount varies based on the specific lawsuit, the claimant’s documented damages, and whether the case resolves through class action settlement or individual negotiation.
No single master settlement has been finalized for all GM engine defect claims as of early 2026. However, individual cases and smaller group settlements have produced results that give us useful benchmarks.
Here is what compensation typically looks like across different claim categories:
| Claim Type | Estimated Compensation Range |
|---|---|
| Repair reimbursement (partial) | $1,500 to $6,000 |
| Full engine replacement reimbursement | $6,000 to $15,000 |
| Diminished vehicle value | $2,000 to $8,000 |
| Vehicle buyback (lemon law adjacent) | Market value minus use |
| Out-of-pocket incidentals (rentals, towing) | $200 to $1,500 |
| Class action cash payment (if settled) | $500 to $3,000 estimated |
These ranges are based on comparable auto defect settlements and reported outcomes in related GM litigation. Actual payouts depend heavily on documentation quality.
Claimants with repair receipts from dealerships, independent mechanics, and documented NHTSA complaints consistently receive higher compensation than those without paper trails.
How Much Is the GM Class Action Lawsuit Payout Per Person?
The GM class action lawsuit payout per person is expected to fall in the range of $500 to $5,000 for most standard class members if a class action settlement is reached in 2026.
That range moves significantly higher for owners who experienced full engine failure and paid for replacement out of pocket. Those claimants often pursue individual or sub-class tracks rather than the standard class action payout.
Think of it this way: a class action settlement is like splitting a restaurant check equally among everyone at the table. Some people ate more than others. That is why lawyers push for tiered settlement structures that reward claimants with greater documented harm.
Factors that affect your individual payout:
- Whether you paid for repairs or engine replacement personally
- Whether your vehicle was still under warranty when the failure occurred
- Whether GM or a dealer previously denied your warranty claim
- How many miles were on the vehicle when the failure happened
- Whether you experienced repeat failures on the same system
| Claimant Tier | Estimated Individual Payout |
|---|---|
| Tier 1: Engine replacement paid out-of-pocket | $6,000 to $15,000 |
| Tier 2: Major repair costs (lifters, valley cover) | $2,000 to $6,000 |
| Tier 3: Minor repairs and oil consumption costs | $500 to $2,000 |
| Tier 4: No repairs but owned affected vehicle | $100 to $500 |
These are projections based on ongoing litigation patterns. Final court approval is required before any class settlement payments are distributed.
What Does the GM Engine Replacement Cost Lawsuit Cover?
The GM engine replacement cost lawsuit specifically targets cases where owners paid for complete engine replacements as a direct result of the AFM or DFM system defects.
A full engine replacement on a GM 5.3L or 6.2L truck engine is not cheap. At a dealer, the bill typically runs between $8,000 and $15,000. Independent shops may charge $5,000 to $9,000. Either way, it is a devastating financial hit for most families.
The lawsuit argues that these costs should never have fallen on consumers. GM designed the defective system. GM sold it. GM’s TSBs acknowledged the problem existed. The financial burden should sit with GM, not with truck owners.
What the lawsuit seeks to recover:
- Full cost of engine replacement if paid after warranty expiration
- Partial cost of engine replacement covered under extended warranty
- Dealer labor charges related to defect diagnosis
- Secondary costs: rental cars, towing, hotel stays during extended repairs
- Resale value losses from documented engine failure history
Key Takeaway: Owners who paid for full engine replacements out-of-pocket have the strongest individual claims in the GM engine failure lawsuit, with potential recovery in the range of $8,000 to $15,000 or more.
What Does the GM Lifter Failure Compensation Cover?
GM lifter failure compensation is available for owners whose engines suffered collapsed or failed lifters, whether or not the damage progressed to full engine failure.
Lifter replacement on a GM 5.3L or 6.2L engine is a labor-intensive repair. The valley cover must be removed, the lifters pulled, the pushrods inspected, and the entire system reassembled. At a dealership, that job typically costs $2,500 to $5,000 in parts and labor.
Some owners had lifter replacements done under warranty. But warranty coverage does not automatically exclude them from the lawsuit. If GM knew the replacement lifters were also likely to fail, and many did, that creates a second round of damages.
Compensation categories for lifter failure claims:
- Original lifter replacement cost (if paid out-of-pocket)
- Repeat lifter replacement costs (second or third failure on same vehicle)
- Rental car and towing costs during repair
- Diminished resale value from service records showing repeated lifter failure
| Repair Type | Average Cost | Covered in Lawsuit? |
|---|---|---|
| Single lifter set replacement | $2,500 to $5,000 | Yes |
| Repeat lifter replacement | $2,500 to $5,000 per occurrence | Yes |
| Full engine replacement | $8,000 to $15,000 | Yes |
| Towing and rental costs | $200 to $1,000 | Yes |
| Diagnosis fees | $150 to $400 | Yes |
Repeat failure is particularly powerful evidence. If GM’s fix failed twice on the same vehicle, that tells the court that the company’s solution was inadequate.
What Is the GM Truck Engine Oil Consumption Lawsuit?
The GM truck engine oil consumption lawsuit addresses a related but distinct problem: GM trucks burning through engine oil at an abnormal rate, sometimes without visible leaks or warning lights.
This is not just a nuisance issue. Severe oil consumption leads to low oil pressure, which causes metal-on-metal engine wear. If a driver does not check oil between changes, which most people do not expect to need to do, the engine can suffer significant damage before anyone realizes something is wrong.
GM’s own TSBs acknowledged excessive oil consumption as a known issue in certain AFM-equipped engines. Some TSBs directed dealers to perform oil consumption tests before approving warranty repairs. Owners report dealers used these tests as a stall tactic to avoid approvals.
The oil consumption lawsuit adds a consumer fraud angle: GM allegedly knew this was happening and did not disclose it at the point of sale.
| Oil Consumption Claim Detail | Information |
|---|---|
| Normal oil consumption rate | Less than 1 quart per 3,000 miles |
| Reported GM AFM/DFM rate | 1 quart per 1,000 to 1,500 miles (some reports) |
| GM TSB acknowledging issue | Yes, multiple TSBs on record |
| Warranty coverage stance | GM required consumption testing, often denied coverage |
| Resulting engine damage | Oil starvation leading to bearing and lifter failure |
If your GM truck burns oil at an unusual rate, that alone may be enough to join the lawsuit even if you have not yet experienced full engine failure.
Key Takeaway: Excessive oil consumption is both a standalone claim and a precursor to catastrophic engine failure in GM’s AFM and DFM-equipped trucks. Owners experiencing this symptom should document it immediately.
How to File a GM Engine Failure Claim
Filing a GM engine failure claim in 2026 involves several steps. The process is not as complicated as it sounds, but the documentation you gather upfront directly affects how much you may recover.
Start here. Collect everything you have:
- Vehicle identification number (VIN)
- Repair receipts from dealers and independent shops
- Dealer service records and work orders
- NHTSA complaint confirmation number (if you filed one)
- Photos or videos of warning lights, oil levels, or damage
- Correspondence with GM customer service
Once your documentation is organized, you have two main routes:
Route 1: Join an Existing Class Action
If a class action has been certified and a settlement fund established, class counsel will typically set up a claims website and notification process. You submit your claim form, provide supporting documents, and await a payout decision.
Route 2: File an Individual or Mass Tort Claim
For owners with large out-of-pocket losses, working with a personal injury or product liability attorney may yield significantly higher recovery than a standard class action payout.
| Filing Route | Best For | Typical Timeline |
|---|---|---|
| Class action claim form | Minor to moderate losses | 6 to 24 months after settlement approval |
| Individual product liability | Engine replacement, major loss | 1 to 3 years |
| State lemon law claim | Vehicles with repeated failures under warranty | 3 to 12 months |
| GM arbitration | Warranty disputes under $10,000 | 60 to 120 days |
Most attorneys handling GM engine failure cases work on a contingency basis, meaning you pay nothing upfront. Their fee comes out of your recovery.
What Is the GM Engine Failure Lawsuit Deadline?
The GM engine failure lawsuit deadline varies by specific case, jurisdiction, and whether you are pursuing a class action claim or an individual lawsuit.
Missing a deadline can eliminate your right to compensation entirely. This is not an area to take lightly.
Statutes of limitations for product liability claims typically run two to four years from the date of the injury or discovery of the defect, depending on the state. For engine failures discovered in 2022 or 2023, deadlines in many states are approaching or already past for some claimants.
The “discovery rule” may extend your deadline. Under this doctrine, the clock starts not when the defect occurred, but when you reasonably discovered it. If GM concealed the defect, courts may toll the statute of limitations further.
| Jurisdiction Type | Typical Statute of Limitations |
|---|---|
| Product liability (most states) | 2 to 4 years from discovery |
| Breach of warranty | 4 years from date of sale (Uniform Commercial Code) |
| Fraud claims | 2 to 6 years depending on state |
| Class action opt-in deadline | Set by court order after certification |
If a class action settlement is announced, there will be a specific claims filing deadline, often 60 to 180 days after the settlement announcement. Missing that window means you receive nothing from the settlement fund.
The bottom line: if you think you have a claim, 2026 is the year to act. Do not wait.
What Is the GM Engine Failure 2026 Update?
As of 2026, the GM engine failure lawsuit is in a dynamic phase. Multiple federal cases are moving through discovery, and settlement negotiations are underway in several jurisdictions.
Here is where things stand:
The AFM-related lawsuits involving 2007 to 2021 model year vehicles are the most advanced. Some of these cases have cleared class certification, which is a major legal milestone. A certified class means the court agrees the claims are similar enough across thousands of owners to be handled collectively.
The DFM-related lawsuits for 2019 and newer vehicles are at an earlier stage. Discovery is ongoing, and plaintiffs’ attorneys are gathering internal GM documents that may show when the company first knew about DFM failures.
| Litigation Stage | AFM Cases | DFM Cases |
|---|---|---|
| NHTSA investigation | Completed | Ongoing |
| Class action filed | Yes | Yes |
| Class certification | Achieved in some districts | Pending |
| Settlement negotiations | Active | Early stage |
| Estimated resolution | 2026 to 2027 | 2027 to 2028 |
GM has not issued a formal recall for either the AFM or DFM defect as of early 2026. Advocacy groups and plaintiffs’ attorneys continue to push NHTSA to escalate its investigation into a mandatory recall order.
A recall would significantly change the legal picture. It would create a public record of GM’s acknowledgment and potentially drive millions more eligible owners into the claims process.
What Is General Motors Product Liability in the Engine Lawsuit?
General motors product liability in the engine lawsuit refers to GM’s legal responsibility as a manufacturer for the defective design and sale of vehicles that caused financial harm to consumers.
Product liability law holds manufacturers accountable when a product is defective in design, defective in manufacturing, or sold without adequate warning. The GM engine lawsuits rely primarily on design defect and failure to warn theories.
The design defect argument says the AFM and DFM systems were inherently flawed. No matter how carefully they were assembled, they would still fail at unacceptable rates.
The failure to warn argument says GM should have told buyers about the known failure risk at the point of sale, and did not.
| Product Liability Theory | How It Applies to GM |
|---|---|
| Design defect | AFM/DFM architecture causes premature lifter and component failure |
| Manufacturing defect | Less central, but raised in isolated cases |
| Failure to warn | GM did not disclose known failure rates to buyers |
| Fraudulent concealment | GM allegedly hid internal data about defect severity |
| Breach of express warranty | Written warranty coverage denied for known defects |
| Breach of implied warranty | Vehicles were not fit for ordinary use |
Each of these theories can support independent legal claims. The strongest plaintiffs typically have evidence supporting more than one theory at once.
Key Takeaway: GM faces product liability on multiple legal fronts simultaneously, including design defect, failure to warn, and fraudulent concealment. This multi-theory approach gives plaintiffs significant legal leverage in 2026 negotiations.
Frequently Asked Questions
What is the GM engine failure lawsuit about in 2026?
The GM engine failure lawsuit is about defective AFM and DFM fuel management systems built into GM’s 5.3L and 6.2L V8 engines that cause catastrophic mechanical failures.
Owners of Chevy, GMC, Cadillac, and Buick vehicles have sued GM for repair costs, engine replacements, and diminished vehicle value.
In 2026, the litigation is active across multiple federal courts, with AFM cases closer to settlement and DFM cases in earlier stages of discovery.
Which GM vehicles qualify for the engine failure lawsuit?
GM vehicles with 5.3L or 6.2L V8 engines equipped with AFM or DFM technology may qualify, covering model years 2007 through 2024.
Qualifying brands include Chevrolet Silverado and Suburban, GMC Sierra and Yukon, and Cadillac Escalade.
Owners who experienced lifter failure, excessive oil consumption, or engine replacement on these vehicles have the strongest claims.
How much money can I get from the GM engine failure settlement?
Most class action claimants could receive between $500 and $3,000 from a standard settlement, while owners who paid for full engine replacements may recover $6,000 to $15,000 or more.
The amount depends on documented repair costs, whether the failure occurred under warranty, and which lawsuit track you participate in.
Owners with complete repair records and dealer service documentation consistently receive higher payouts.
What is the deadline to file a GM engine failure lawsuit claim?
The deadline varies by state and claim type, but product liability statutes of limitations typically run two to four years from the date the defect was discovered.
For many owners who experienced failures in 2022 or 2023, deadlines are approaching in 2026, making this year critical for filing.
If a class action settlement is announced, a separate court-ordered claims deadline will be set, usually 60 to 180 days after the announcement.
What is the difference between the AFM and DFM engine defects in GM trucks?
AFM (Active Fuel Management) is GM’s original cylinder deactivation system, used from 2007 to 2021, and it deactivates four of eight cylinders during light-load driving.
DFM (Dynamic Fuel Management) replaced AFM in 2019 and newer trucks, and it operates in up to 17 different cylinder combinations, creating more failure points.
Both systems cause the same core problems: collapsed lifters, oil consumption, and eventual engine failure, but DFM cases are newer and still in earlier stages of litigation.
What Comes Next for GM Engine Failure Claimants
The most important thing to understand right now is this: the window to act is closing for some claimants and wide open for others. Where you fall depends on your vehicle’s model year and when your failure occurred.
Gather your documentation today. VIN, repair receipts, dealer records, any NHTSA complaint you filed. These materials are the foundation of your claim regardless of which legal route you take.
If your losses were significant, particularly a full engine replacement paid out-of-pocket, talk to a product liability attorney this year. The DFM litigation is building, the AFM cases are approaching resolution, and 2026 may be the most active year in this entire legal saga.
