# Service bulletin 20NA027

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: 10173412
- Published by NHTSA: 2020\-04\-06
- Manufacturer's number: 20NA027
- Manufacturer's date: 2020\-02\-14
- NHTSA component: ENGINE; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

## NHTSA's summary

This technical bulletin provides a procedure to check the fuel pressure and update the ECM if the pressure is over 58 psi.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173412-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173412-9999.pdf)

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

## Components

Engine, Fuel system, Fuel pump

## Vehicles listed

- 2020 CHEVROLET EQUINOX
- 2020 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [20NA110](/bulletins/10214200.md), 2022-06-21, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP; EQUIPMENT ADAPTIVE/MOBILITY. This service bulletin provides service information for a DEF pump that is unable to build pressure after replacement.
- [20NA110](/bulletins/10183168.md), 2020-11-30, Service bulletin: FUEL SYSTEM, DIESEL; FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

JSON: [/v1/bulletins/10173412](/v1/bulletins/10173412)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2020NA027&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10173412&vehicle=Service%20bulletin%2020NA027)