AI Damage2017 Proterra Catalyst: common problems
The maker issued 30 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 30
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Structure | 0 | 0 | 13 |
| Electrical system | 0 | 0 | 11 |
| Equipment | 0 | 0 | 3 |
| Service brakes | 0 | 0 | 3 |
| Steering | 0 | 0 | 3 |
| Powertrain | 0 | 0 | 2 |
| Engine and cooling | 0 | 0 | 1 |
| Fuel/propulsion system | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
Comparison
What to check before buying
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Transit bus repair to the electrical cabinet behind the drivers area
This bulletin updates the bracketry to be more robust in this area.
- Transit bus repair to the side windows due to water ingress between window and body
- Transit bus repair for the gas struts on the wheel well box to no locking struts
The locking struts to the wheel well compartment were failing due to user error and not unlocking the strut prior to closing the compartment..
- Transit bus repair to the exterior compartment panels to include a larger latch catch to support tolerance…
- Transit bus repair to the air dryer governor switch due to the original not performing as well with the…
Transit bus repair to the air dryer governor switch due to the original not performing as well with the environmental expose.
- Transit bus repair instruction for the charge blade on the roof of the bus to supplement the repair manual…
Transit bus repair instruction for the charge blade on the roof of the bus to supplement the repair manual to ensure connections have not come loose.
- Transit bus to the vehicles electrical and software due to the odometer losing mileage
- Transit bus repair to the air compressor, the previous banjo fitting was prone to leaking, the solid drain…
Transit bus repair to the air compressor, the previous banjo fitting was prone to leaking, the solid drain plug prevents compressor from losing oil.
- Transit bus repair to the coolant system in which a bleed line is potentially allow for aeration of the…
Transit bus repair to the coolant system in which a bleed line is potentially allow for aeration of the coolant. Procedure caps off this line.
- Transit bus update to the air in take of the air compressor to support the compressor getting clean air…
Transit bus update to the air in take of the air compressor to support the compressor getting clean air into the unit to increase reliability.
- Transit bus torque verification on the intermediate steering shaft
- Transit bus fleet check to inspect the steering gearboxes and replace hardware
NHTSA lists 30 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2017 Proterra Catalyst?
There are no owner complaints in the NHTSA data for this year; the data comes from 30 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2017 Proterra Catalyst?
NHTSA lists 30 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2017 Proterra Catalyst from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.