# Service bulletin 20NA170

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10186081
- Published by NHTSA: 2021\-02\-01
- Manufacturer's number: 20NA170
- Manufacturer's date: 2020\-12\-11
- NHTSA component: EQUIPMENT ADAPTIVE/MOBILITY; SERVICE BRAKES; EQUIPMENT; STRUCTURE

## NHTSA's summary

This service bulletin provides a procedure to correct a customer concern of a Clicking Type Noise Heard Near Brake Pedal and/or I\-Booster Under the Hood.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10186081-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10186081-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame, Brakes, Equipment and accessories

## Vehicles listed

- 2017 to 2020 CHEVROLET BOLT EV

## Recalls for the same vehicles and component

- [23V845000](/recalls/nhtsa/23V845000.md), 2023-12-14: SEAT BELTS:PRETENSIONER; STRUCTURE:BODY:ROOF AND PILLARS
- [22V930000](/recalls/nhtsa/22V930000.md), 2022-12-15: SEAT BELTS:PRETENSIONER; STRUCTURE:BODY:ROOF AND PILLARS
- [2021631](/recalls/tc/2021631.md), 2021-10-14: Accessories
- [20V808000](/recalls/nhtsa/20V808000.md), 2020-12-22: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
- [2020130](/recalls/tc/2020130.md), 2020-03-26: Structure
- [2018461](/recalls/tc/2018461.md), 2018-08-30: Brakes
- [18V576000](/recalls/nhtsa/18V576000.md), 2018-08-30: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

## Other bulletins for the same vehicles and component

- [25\-NA\-065](/bulletins/11017173.md), 2025-04-24, Service bulletin: STEERING; SERVICE BRAKES; FUEL/PROPULSION SYSTEM. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- [05\-08\-51\-001L](/bulletins/11015382.md), 2025-03-08, Service bulletin: STRUCTURE:BODY. This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film.
- [22\-NA\-244](/bulletins/11014238.md), 2025-02-12, Service bulletin: UNKNOWN OR OTHER; STRUCTURE:BODY. This warranty administration service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin: VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [10\-08\-110\-001L](/bulletins/11014171.md), 2025-02-11, Service bulletin: STRUCTURE:BODY; VEHICLE SPEED CONTROL. This service bulletin provides information on proper use of floor mats.
- [21\-NA\-043](/bulletins/11011709.md), 2024-12-10, Service bulletin: STRUCTURE:BODY; WHEELS; ENGINE; SERVICE BRAKES; UNKNOWN OR OTHER. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [22\-NA\-244](/bulletins/11010493.md), 2024-11-13, Service bulletin: UNKNOWN OR OTHER; STRUCTURE:BODY. This warranty administration service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [23\-NA\-219](/bulletins/11009764.md), 2024-11-05, Service bulletin: UNKNOWN OR OTHER; STRUCTURE:BODY. This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
- [22\-NA\-244](/bulletins/11000550.md), 2024-05-30, Warranty extension: ELECTRICAL SYSTEM; EXTERIOR LIGHTING; STRUCTURE:BODY; UNKNOWN OR OTHER; SERVICE BRAKES. This service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [23\-NA\-064](/bulletins/10254014.md), 2024-05-02, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.

JSON: [/v1/bulletins/10186081](/v1/bulletins/10186081)

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