The Recall Desk
HighNHTSA·18E085000·Announced 2018-08-20

Allison Transmission Recall for Potential Loss of Drive

Allison is recalling certain H 50 and H 40 Drive Units because pressure switches may fail, 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 (loss of drive) where injury has not yet been reported, fitting the High severity criteria.

Plain-English summary

Allison Transmission, Inc. is recalling certain H 50 EP, H 40 EP, H 50 Cert, and H 40 Cert Drive Units. The recall addresses a defect where the pressure switches on these 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. The recall began on September 14, 2018.

Allison will notify the vehicle manufacturers that purchased the affected transmissions. Dealers will replace the C1 and C2 pressure switches free of charge. Owners may contact Allison customer service at 1-800-252-5283 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
592

Distribution

Distributed nationwide across the United States.

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Same hazard · loss of drive

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