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This is a historical safety record. The campaign may no longer be active.

NHTSA : 18E085000

Campaign Details

Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Defect Description

Allison Transmission, Inc. (Allison) is recalling certain H 50 EP, H 40 EP, H 50 Cert, and H 40 Cert Drive Units. The pressure switches on these Drive Units may fail, possibly resulting in a loss of drive.

Consequence / Hazard

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

Proposed Solution

Allison will notify the vehicle manufacturers that purchased the affected transmissions, and dealers will replace the C1 and C2 pressure switches, free of charge. The recall began September 14, 2018. Owners may contact Allison customer service at 1-800-252-5283.

🚗 Affected Vehicles2

All the models below were recalled for this exact same problem.