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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10173412
Published by NHTSA2020-04-06
Manufacturer's number20NA027
Manufacturer's date2020-02-14
NHTSA componentENGINE; 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

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Fuel system, Fuel pump

Vehicles listed
CHEVROLET EQUINOX2020
GMC TERRAIN2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
20NA1102022-06-21. Service bulletin. This service bulletin provides service information for a DEF pump that is unable to build pressure after replacement.
20NA1102020-11-30. Service bulletin. 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.