GM Fuel Pump Settlement Checks Went Out March 23 and August 31, 2026: The $50 Million Duramax CP4 Deal Has Paid Its Two Funds — The August Round Paid Claims Cured After Deficiency Notices, and the Last 50% Repair Refunds Still Have No Date

The money from the $50 million GM fuel pump settlement has been going out for six months. The official website, GMFuelPumpLitigation.com, run by JND Legal Administration, now opens with two notices: “Initial distribution payments were issued on March 23, 2026” and, above it, “Additional and Residual distribution payments were issued on August 31, 2026.” Its FAQ adds that the claim review “has been completed, and initial distribution payments were mailed on March 23, 2026, to all Class Members who submitted timely and valid Claims,” and that “Additional payments will be issued on a rolling basis to class members who cure deficient claims.”

So what is the gm fuel pump settlement payout date? For the two cash funds there are two: March 23, 2026 for the first round and August 31, 2026 for the additional and residual round. For the separate 50% repair-refund program there is none: the FAQ says, “We will not have a timeline for the last wave of Reimbursement Checks until all Reimbursement Requests have been processed.” Nothing can be filed any more. The claim deadline for past repairs and former owners was November 6, 2025; the refund program ended on May 6, 2026 (or at 200,000 miles, if a truck got there first), and the last day to send a refund request was July 5, 2026.

The case is Chapman, et al. v. General Motors LLC, No. 2:19-cv-12333-TGB-DRG, in the U.S. District Court for the Eastern District of Michigan, Judge Terrence G. Berg. Owners claimed that the Bosch “CP4” high-pressure fuel injection pump in 2011–2016 Chevrolet Silverado and GMC Sierra heavy-duty trucks with the 6.6-liter Duramax diesel is, in the FAQ’s words, “unreasonably fragile and prone to catastrophic failure”: parts rub against each other and shed metal shavings that “contaminate the entire high-pressure fuel injection system, sometimes leading to engine shutdown.” GM denies that the pumps are defective and admits no wrongdoing. The suit was filed in August 2019; on March 31, 2023 the court certified seven state classes, and the settlement was filed for approval in June 2024. Judge Berg granted final approval on May 6, 2025, dismissed the case with prejudice and directed entry of final judgment. The CourtListener copy of the docket, last updated in December 2025, shows no filing after May 6, 2025 and no notice of appeal, and payments in 2026 are consistent with a settlement that became final.

You are a class member if you bought a model year 2011–2016 Chevrolet Silverado or GMC Sierra with the 6.6L Duramax diesel and Bosch CP4 pump from a GM-authorized dealer in California, Florida, Illinois, Iowa, New York, Pennsylvania or Texas between March 1, 2010 and September 13, 2024. Buying from a dealer in any other state, or from a private seller, does not count. The settlement paid three different ways.

Repair Fund. Split pro rata by the number of qualifying repairs. Some owners were to be paid without filing: JND’s plan says GM repair data would let it identify people who paid for repairs at GM dealers, and that about one-third of an estimated 9,400 qualifying repairs fell in that group. Everyone else had to file with proof of purchase from a dealer in one of the seven states and proof of repair — a repair order or invoice with the owner’s name, the VIN and the parts replaced, or, without those, a bank or card statement plus a signed declaration.

Former Owner Fund. Split equally among former owners with approved claims, who had to prove the sale date. Claimants whose repair claim failed for lack of proof of payment, but who proved they had sold the truck, could be moved into this fund, according to JND’s allocation plan.

The refund program. For 12 months from final approval, GM reimbursed 50% of the cost of CP4 pump repairs and the related parts listed in GM Technical Service Bulletin 16-NA-102, if done at a GM-authorized dealership — until May 6, 2026 or 200,000 miles, whichever came first. The FAQ says diagnostic fees and parts not on that list were not covered. The refund went with the truck to later owners, but dealers could not pay it; requests went to JND within 60 days of the repair, with proof of payment. GM pays these refunds itself, not from the $50 million. The FAQ says approved requests are paid “within 60 days of the form’s submission” — by our count, requests sent on the July 5 deadline were due by September 3, 2026 — yet the same FAQ gives no timeline for the last wave. The program is over; nothing in the settlement extends it, and the FAQ says existing warranties are unaffected.

Payment options on both forms were a virtual debit card, PayPal, Venmo or a paper check; anyone who chose nothing, or more than one option, gets a check.

The gm fuel pump settlement fund is $50,000,000, which GM agreed to pay into escrow — $500,000 within 20 business days of preliminary approval and the remaining $49,500,000 within 20 business days of final approval. JND’s allocation plan divides it like this.

Two details. The FAQ says the fees are “completely separate from the $35 million available to Settlement Class Members” and that the service awards “will not affect the $35,000,000 fund.” The settlement agreement does allow notice and claims-administration costs to be paid from the Settlement Fund; the documents we read give no figure for them, so the $35 million may be somewhat reduced by those costs.

What did a check pay? The official site has published no amounts. The only numbers from the court record are estimates made before anyone filed:

• Repair Fund: about $12,712 per repair if 25% of those who paid for repairs were paid, about $6,356 if 50% were.
• Former Owner Fund: about $800 at a 5% claims rate, $571.43 at 7%, $400 at 10%. Mr. Stockton, whose declaration the plaintiffs filed, estimated about 125,000 trucks in the former-owner group.

For scale, by our arithmetic: if every one of the estimated 9,400 repairs had been paid, the $30 million would come to about $3,190 each; if all 125,000 former owners had claimed, $5 million would be $40 each. What an approved claim actually received depends on how many claims were approved — a number the administrator has not published. At final approval the court noted that JND had “already received more than 3,000 claim forms”; the claim period then ran six more months. The August 31 round was labeled a residual distribution, which by our reading means money left in the two funds was paid out to approved claimants. The FAQ says “No amount of the Settlement Funds will be returned to GM”; anything that cannot sensibly be distributed goes to “charitable causes that indirectly benefit the Class.”

JND’s contact details are at the end of this article; the settlement FAQ says, in capitals, not to contact the court or GM about the notice.

The “$35M GM fuel pump settlement” is the same case. Top Class Actions files a page called “$35M GM fuel pump class action settlement” under closed settlements. It names Chapman, et al. v. General Motors LLC, Case No. 2:19-cv-12333-TGB-DRG — this case. The $35 million is the owners’ share of the $50 million after the $15 million fee. That page still shows a final approval hearing on January 21, 2025 and a claim deadline “on or around July 21, 2025”; both were superseded. The hearing took place on April 25, 2025, approval came on May 6, and the deadline became November 6, 2025. ClaimDepot’s page, updated August 27, 2026, says the $35 million fund also covers attorneys’ fees; the official FAQ says the opposite. Neither page mentions the March and August 2026 payments.

Ford trucks are not in this settlement. Ford’s 6.7-liter Power Stroke diesel trucks also used the Bosch CP4 pump, and Ford owners filed their own lawsuits. A November 17, 2020 press release from the plaintiffs’ firm Hilliard Martinez Gonzales describes Stevens v. Ford Motor Company, No. 2:18-cv-00456, in the Southern District of Texas, filed in December 2018 over the CP4 pump that, it says, “comes standard in all 2011-present model year Ford diesel vehicles equipped with a Power Stroke 6.7L engine.” Top Class Actions reported a South Carolina owner’s suit filed in Michigan federal court in December 2022. None of them is resolved by Chapman, which covers only GM trucks. In the sources we checked we found no Ford CP4 settlement.

Not the GM engine settlement either. Siqueiros v. General Motors is a different case, over oil consumption in the 5.3-liter V8 of 2011–2014 trucks and SUVs, with its own payments and deadlines; our GM engine settlement page covers it. It concerns a different engine, and a payment in one case says nothing about the other.

Older CP4 suits against GM. The same 2020 press release mentions two earlier GM cases: Click v. General Motors LLC, No. 2:18-cv-00455, in the Southern District of Texas, and In re: GM LLC CP4 Fuel Pump Litigation, No. 3:18-cv-07054, in the Northern District of California, whose plaintiffs, the press release says, agreed to transfer to the Eastern District of Michigan. We did not trace what became of the Texas case; the settlement class does include Texas buyers. The settlement defines the “Action” as Chapman “including all actions transferred to and/or consolidated in that docket.”

Where is my gm fuel pump settlement check? Start with the payment method you picked on the form: a PayPal or Venmo payment or a virtual card arrives electronically, while the default is a paper check by mail. If you filed a repair or former-owner claim and nothing came, the most likely explanation on the official record is a deficient claim. The home page’s March 23 notice said responses to Notices of Deficient Claim were being reviewed and that “An additional distribution will be made in August to Class Members that have provided documentation to cure their deficient Claim” — that became the August 31 round. The FAQ still says cured claims are paid “on a rolling basis,” but the site names no payment date after August 31. A claim filed after November 6, 2025 or without the required proof is treated, in the FAQ’s words, “the same as doing nothing.” The GM settlement documents we read do not state a check-cashing deadline, so if a check reached you, cash it promptly.

To ask about your claim, contact JND Legal Administration at 1-866-848-0815 or info@GMFuelPumpLitigation.com, or write to GM Fuel Pump Settlement, c/o JND Legal Administration, PO Box 91445, Seattle, WA 98111. Type the address yourself rather than clicking a link in an email; the eligibility check is the VIN lookup linked from the official site. GM dealers could not pay the refunds and cannot answer questions about them, the FAQ says. Class counsel are Hagens Berman Sobol Shapiro LLP (Seattle), Hilliard Law (Corpus Christi) and The Miller Law Firm, P.C. (Rochester, Michigan); the FAQ lists 1-206-623-7292 for class counsel.

Everyone in the class who did not opt out by December 12, 2024 released GM from claims “relating to the CP4 pump in your truck,” whether or not they filed. The release does not cover death, personal injury or property damage other than damage to the truck itself, according to the FAQ. If you missed the November 6 deadline, the release still applies to you, and the official site announces no new claim period.