{
  "owners": null,
  "title": "Allison Transmission recall 23E056: Allison Transmission 6th Gen TCM",
  "url": "https://carsmultiverse.com/recall/23e056/",
  "summary": "Recall 23E056 (Allison Transmission): Failure to achieve 4th gear lock up may prevent the vehicle from achieving the full sequence needed to pump water, which can increa...",
  "excerpt": "Allison Transmission 6th Gen Tcm, model year 9999. Filed by Allison Transmission, Inc. and reported to NHTSA on 24 July 2023. 584 vehicles potentially affected. What the notice says Allison Transmission, Inc. (ATI) is recalling certain Emergency Vehicle Series 6th Generation Transmission Control Modules (TCM). The transmission control module (TCM) may fail to achieve the 4th gear transmission lockup needed to initiate the water pump. Is your vehicle included? Check with your VIN at NHTSA , or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on. CarsMultiverse / Recalls Answered from the register this site holds. NHTSA is the record to act on. What the authority says can happen if this is not fixed: “Failure to achieve 4th gear lock up may prevent the vehicle from achieving the full sequence needed to pump water, which can increase the risk of injury in an emergency.” 23E056 Allison Transmission, Inc. Power Train:Automatic Transmission:Control Module (TCM/PCM/Tecm) 24 July 2023 9999-9999 ALLISON TRANSMISSION 6TH GEN TCM Failure to achieve 4th gear lock up may prevent the vehicle from achieving the full sequence needed to pump water, which can increase the risk of injury in an emergency. Vehicle manufacturers will update the TCM software, free of charge. ATI notified the affected vehicle manufacturers on July 31, 2023. Owners may contact ",
  "register": {
    "authority": "NHTSA",
    "country": "United States",
    "index": "https://carsmultiverse.com/changed/"
  },
  "datePublished": "2026-08-23T22:59:59+00:00",
  "dateModified": "2026-09-16T22:21:22+00:00",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "CarsMultiverse, \"Allison Transmission recall 23E056: Allison Transmission 6th Gen TCM\", https://carsmultiverse.com/recall/23e056/, licensed CC BY 4.0.",
  "note": "CarsMultiverse is an independent record, not a safety authority. To act on a recall, use the official register."
}