Loss of drive from fractured pressure switch
Defect Summary
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.
Safety Consequence
A loss of drive can disable the vehicle unexpectedly, increasing the risk of a crash.
Corrective Action
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.
Similar Recalls
Other recalls from Allison Transmission, Inc. or involving Power Train.
FAQ: Recall 18E085000
Your rights, the repair process, and what each field on this page means.
What is recall 18E085000?
NHTSA recall 18E085000 was issued by Allison Transmission, Inc. on August 20, 2018. It addresses: Loss of drive from fractured pressure switch. The recall affects approximately 592 vehicles, with the defect involving the Power Train component.
How do I get this recall repaired?
Contact any authorized Allison Transmission, Inc. dealer and reference NHTSA recall ID 18E085000 or the manufacturer campaign number N/A. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.