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Service bulletin PIE0433A

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 id10134633
Published by NHTSA2018-04-23
Manufacturer's numberPIE0433A
Manufacturer's date2017-10-31
NHTSA componentFUEL SYSTEM, GASOLINE

NHTSA's summary

This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Engineering Information ? Malfunction Indicator Lamp (MIL) On DTCs P0171 Fuel Trim System Lean Bank 1 and/or P0174 Fuel Trim System Lean Bank 2.

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

Fuel system

Trouble codes named

P0171, P0174

Vehicles listed
BUICK ENCLAVE2014, 2015, 2016, 2017, 2018
CHEVROLET EQUINOX2014, 2015, 2016, 2017
CHEVROLET TRAVERSE2014, 2015, 2016, 2017, 2018
GMC ACADIA2014, 2015, 2016, 2017, 2018
GMC TERRAIN2014, 2015, 2016, 2017, 2018

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

Recalls for the same vehicles and component
20182892018-06-01. Fuel System
18V3580002018-05-31. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
14V2230002014-04-30. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; FUEL SYSTEM, GASOLINE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
24-NA-2252024-12-02. Service bulletin. This bulletin provides information on how to look for and test for DEF or water in the fuel system and what the specs should be.
05-06-04-022V2024-09-05. Service bulletin. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
21-NA-2802024-08-30. Service bulletin. This service bulletin provides diagnostic repair information for customer concerns of Engine Run-On, Rough Running, Malfunction Indicator Lamp (MIL) Illuminated.
18-NA-1032024-08-24. Service bulletin. This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel in cold temperatures.
16-NA-3832024-07-16. Service bulletin. This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
04-06-04-051I2024-07-16. Service bulletin. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
22-NA-1932024-06-24. Service bulletin. This informational bulletin explains to the tech on where to look for a possible concern with the rockers causing the MIL to illuminate.
18-NA-3612024-05-28. Service bulletin. This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.
PIP5596A2024-04-15. Service bulletin. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.