Hearth Record

Power train: automatic transmission: control module (tcm/pcm/tecm) (Allison Transmission)

Vehicle equipment recall 23E-056. NHTSA received Allison Transmission, Inc.’s report on Jul 24, 2023.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received Allison Transmission, Inc.’s report on Jul 24, 2023. Copied from NHTSA on Oct 20, 2026.

Every line below is in NHTSA’s own words, with its source beside it.

What’s wrong with it?

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.

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.

Source:

NHTSA, Recalls flat file. Released Oct 20, 2026. Updated daily.

  • NHTSA’s part: Power train: automatic transmission: control module (tcm/pcm/tecm).

What should you do?

Vehicle manufacturers will update the TCM software, free of charge. ATI notified the affected vehicle manufacturers on July 31, 2023. Owners may contact ATI customer service at 1-317-242-5000.

Source:

NHTSA, Recalls flat file. Released Oct 20, 2026. Updated daily.

  • How to reach the firm: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Which ones are recalled?

NHTSA counts 584 items potentially involved, across everything this recall names.

  • Part no. Software levels BC221-22
Source:

NHTSA, Recalls flat file. Released Oct 20, 2026. Updated daily.

  • Allison Transmission 6th GEN TCMNHTSA gives no dates made

Who is recalling it?

  • Made by Allison Transmission, Inc..
Source:

NHTSA, Recalls flat file. Released Oct 20, 2026. Updated daily.

What the record doesn’t say

  • NHTSA’s recall file doesn’t say whether anyone was hurt.
  • Which ones, by part or lot: the recall’s report on NHTSA’s site gives them where the maker did; this file gives part numbers only where its maker listed them.
  • How many have been returned or fixed isn’t in the notice.
Source:

Hearth Record wrote these lines.

Sources

  • National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).

    Released Oct 20, 2026 and checked Oct 20, 2026. Updated daily. Public domain (U.S. Government work).

Source:

Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 20, 2026.

How to read a record

Four things every record does, shown on an example record made up for this guide.

An example record, made up for this guide

An example nursing home

Made up for this guide: no real place is shown

Not fully inspected in over two years (CMS flag)

11 health citations at the latest inspection cycle

The state average is 14.3.

Source:

CMS, State and US Averages and Health Deficiencies. Released Oct 28, 2026. Updated monthly.

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Every fact names its source.

Who published it, when, and how often it changes sit beside each fact, with a link to the agency’s own file.

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