Bolts holding steering gear box may loosen
Defect Summary
Proterra inc. (proterra) is recalling certain 2018-2020 35 foot and 40 foot catalyst buses. lack of plexus adhesive between the torque plate and the vehicle chassis may cause the bolts securing the steering gear box to loosen.
Safety Consequence
An unsecured steering gear box could cause the driver to lose the ability to steer the vehicle, increasing the risk of crash or injury.
Corrective Action
Proterra will notify owners, and dealers will inspect the steering gear mounting bolts and the plexus adhesive layer between the torque plate and the chassis. if the plexus adhesive layer is missing or insufficient, the components will be repaired, free of charge. the recall began december 10, 2020. owners may contact proterra customer service at 1-864-438-0000. proterra's number for this recall is sc-20-154.
Similar Recalls
Other recalls from Proterra Operating Company, Inc. or involving Steering.
FAQ: Recall 20V664000
Your rights, the repair process, and what each field on this page means.
What is recall 20V664000?
NHTSA recall 20V664000 was issued by Proterra Operating Company, Inc. on October 28, 2020. It addresses: Bolts holding steering gear box may loosen. The recall affects approximately 5 vehicles, with the defect involving the Steering component.
How do I get this recall repaired?
Contact any authorized Proterra Operating Company, Inc. dealer and reference NHTSA recall ID 20V664000 or the manufacturer campaign number SC-20-154. 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.