The Recall Desk
HighNHTSA·20E049000·Announced 2020-07-17

Allison Transmission Drive Units Recalled for Pressure Switch Failure

Allison Transmission is recalling specific drive units because pressure switches may fail, potentially causing a loss of drive and increasing crash risk.

What this means for you

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: The recall involves a risk-of-harm product where a loss of drive can disable the vehicle unexpectedly, increasing the risk of a crash, but no specific injuries or fatalities are reported in the source text.

Plain-English summary

Allison Transmission, Inc. (ATI) is recalling certain Drive Units, including the H 50 EP, H 40 EP, H 50 EP Cert, and H 40 EP Cert Drive models. The recall covers specific part numbers for these units, such as 29540673, 29540900, 29540697, 29549708, 29556925, 29556926, 29557038, and 29557036.

The pressure switches on these Drive Units may fail, which can result in a loss of drive. A loss of drive can disable the vehicle unexpectedly, increasing the risk of a crash.

ATI will notify the manufacturers that purchased the affected equipment. ATI dealers will replace the C1 and C2 pressure switches in the affected drive units free of charge. The recall began on August 10, 2020. Owners may contact ATI customer service at 1-317-242-5000 or the NHTSA Vehicle Safety Hotline at 1-888-327-4236.

The recalled product

Product
POWER TRAIN:AUTOMATIC TRANSMISSION recall
Manufacturer
Allison Transmission, Inc.
Category
Vehicle — Automatic Transmission
Hazard
Affected units
262

Distribution

Distributed nationwide across the United States.

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