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Service bulletin PIP4942B

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 id10112103
Published by NHTSA2017-08-15
Manufacturer's numberPIP4942B
Manufacturer's date2014-07-08
NHTSA componentFUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL

NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that may have a fuel leak or fuel odor. Technician may find Diagnostic Trouble Codes. If Diagnostic Trouble Codes are found technician should use published Service Information diagnostics first. If fuel leaks are found at the high pressure pump to fuel rail line fitting connections, technician should inspect the high pressure line fittings for misaligned lines and/or low torque of the line nuts. If leaks are found at the high pressure line fittings, technician will need to replace both lines.

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, Fuel injection, Fuel pump

Vehicles listed
CHEVROLET EXPRESS2010, 2011, 2012, 2013, 2014, 2015
CHEVROLET SILVERADO2011, 2012, 2013
CHEVROLET SILVERADO2015
CHEVROLET SILVERADO 15002014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002014 (the catalog's model; the bulletin names a series or trim of it)
GMC SAVANA2010, 2011, 2012, 2013, 2014, 2015
GMC SIERRA2011, 2012, 2013
GMC SIERRA2015
GMC SIERRA 15002014 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002014 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2015 (the catalog's model; the bulletin names a series or trim of it)

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
PIT5110D2024-04-15. Service bulletin. HI
140604004B2023-12-11. Service bulletin. Various Engine Noises During Cold Start and Warm Engine Operation
140604004A2023-12-11. Service bulletin. Various Engine Noises During Cold Start and Warm Engine Operation
18NA2352022-05-31. Service bulletin. This information bulletin advised the tech of possible use of low fuel quality and the possible ramifications in performance in regards to the customers concerns.
04-06-04-051F2022-04-05. Service bulletin. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
20NA0982020-06-22. Service bulletin. This informational bulletin explains to the tech on how to order a new fuel injector by matching the part number on the part and ordering it from the EPC.
16NA3832020-06-22. Service bulletin. This technical 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.
16NA3832020-03-02. Service bulletin. This informational 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.
PIE05232019-07-01. Service bulletin. This engineering informational bulletin is requesting information for vehicles that has had the fuel injection pump replaced and is still within warranty.
PIP55962018-11-13. 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.