Allison Transmission, Inc.: Safety Recalls in 2020

Updated on March 19, 2026.

There was 1 safety recall made by Allison Transmission, Inc. in 2020. See the detail of the recall below.

You can also see similar information for other manufacturers.

Data Source: NHTSA.

See this for other years:

July 17, 2020

(Campaign #: NR (Not Reported))

Loss of Drive from Fractured Pressure Switch

Allison Transmission, Inc. (ATI) is recalling certain Drive Units: H 50 EP (part numbers 29540673 and 29540900), H 40 EP (part numbers 29540697 and 29549708), H 50 EP Cert (part numbers 29556925 and 29556926), and H 40 EP Cert Drive (part numbers 29557038 and 29557036). The pressure switches on these Drive Units may fail, possibly resulting in a loss of drive.

NHTSA ID: 20E049000

Component: POWER TRAIN

# of Units Affected: 262

Consequence Summary:

A loss of drive can disable the vehicle unexpectedly, increasing the risk of a crash.

Corrective Action:

ATI will notify the manufacturers that purchased the affected equipment, and ATI dealers will replace the C1 and C2 pressure switches in the affected drive units free of charge. The recall began August 10, 2020. Owners may contact ATI customer service at 1-317-242-5000.

Park Outside Advisory: No

Do not Drive Advisory: No

Completion Rate (%): 50

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