# Service bulletin 17NA021

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: 10154974
- Published by NHTSA: 2019\-03\-25
- Manufacturer's number: 17NA021
- Manufacturer's date: 2018\-12\-07
- NHTSA component: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; SERVICE BRAKES

## NHTSA's summary

This technical bulletin provides a procedure for replacing the oil pump, power brake booster and power brake booster vacuum hose to eliminate a hard brake pedal and/or air type noise heard upon brake apply due to oil in the brake booster.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10154974-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10154974-9999.pdf)

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

## Components

Brakes, Equipment and accessories

## Vehicles listed

- 2017 to 2018 BUICK LACROSSE
- 2018 BUICK REGAL
- 2016 to 2018 CADILLAC ATS
- 2016 CADILLAC CT6
- 2017 to 2018 CADILLAC CT6 PLUG\-IN HYBRID
- 2016 to 2018 CADILLAC CTS
- 2017 to 2018 CADILLAC XT5
- 2016 to 2018 CHEVROLET CAMARO
- 2017 to 2018 GMC ACADIA

## Recalls for the same vehicles and component

- [2022347](/recalls/tc/2022347.md), 2022-06-30: Brakes
- [22V465000](/recalls/nhtsa/22V465000.md), 2022-06-30: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE; SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
- [2018461](/recalls/tc/2018461.md), 2018-08-30: Brakes
- [18V576000](/recalls/nhtsa/18V576000.md), 2018-08-30: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
- [16V802000](/recalls/nhtsa/16V802000.md), 2016-11-04: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
- [2016542](/recalls/tc/2016542.md), 2016-11-03: Brakes

## 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.
- [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.
- [17\-NA\-271](/bulletins/11011990.md), 2024-12-19, Service bulletin: WHEELS; SERVICE BRAKES. This service bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customer concern of wheel clicking.
- [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.
- [17\-NA\-239](/bulletins/11010562.md), 2024-11-14, Service bulletin: SERVICE BRAKES. This bulletin provides information on possible normal brake drag caused by the vehicle parked for an extended period of time.
- [16\-NA\-059](/bulletins/11010559.md), 2024-11-14, Service bulletin: SERVICE BRAKES. This service bulletin provides information for cleaning the brake calipers that may have staining/discoloring on the paint of the brake caliper.
- [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.
- [20\-NA\-132](/bulletins/10253527.md), 2024-04-23, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [17\-NA\-052](/bulletins/10253526.md), 2024-04-23, Service bulletin: WHEELS; EQUIPMENT. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.
- [PIC6541](/bulletins/10253078.md), 2024-04-15, Service bulletin: EQUIPMENT:ELECTRICAL. This Preliminary information communicates to the technicians some additional diagnostic tips if they encounter a condition of a dead battery/parasitic drain.

JSON: [/v1/bulletins/10154974](/v1/bulletins/10154974)

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