NHTSA Complaint #11503678 — 2017 CHEVROLET BOLT EV
SERVICE BRAKES issue reported to NHTSA
Complaint Details
| ODI Number | 11503678 |
| Vehicle | 2017 CHEVROLET BOLT EV |
| Component | SERVICE BRAKES |
| Date of Incident | |
| Date Filed | |
| Mileage | N/A miles |
| Crash | No |
| Fire | No |
| Injuries | 0 |
| Deaths | 0 |
| Vehicle Towed | No |
| State | IL |
Consumer Description
In Sept 2020, GM issued Service Bulletin 20-NA-170 regarding rapid popping or clicking noises coming from the I-Booster hardware under the hood in the BOLT braking system. Earlier fixes for this issue involved replacing the I-Booster hardware, but that didn't solve the problem. The new fix called for a software update to the Brake Booster Control Module. The Bulletin states: "Correction -- DO NOT replace the I-booster assembly. Update the Brake Booster Control Module with the latest software." What happens to the brake system if the software update is not applied? Does the I-Booster hardware eventually fail because of the 1000's of unnecessary use cycles, and then what happens? Why hasn't a recall been issued for this possible safety issue caused by a software defect?
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