Service bulletin PIP-4942

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)
Type	Service bulletin
NHTSA id	10041435
Published by NHTSA	2011-10-03
Manufacturer's number	PIP-4942
Manufacturer's date	2012-03-01
Replaces	PIP-4942A
NHTSA component	FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

NHTSA's summary

CHEVROLET/GMC: AT HIGH PRESSURE PUMP TO HIGH PRESSURE FUEL LINES THERE ARE SIGNS OF FUEL LEAKAGE AND/OR FUEL ODOR. *PE UPDATED ON 5/2/2012. *KB

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Fuel system, Fuel hoses and lines, Fuel pump

Vehicles listed
CHEVROLET EXPRESS	2010, 2011, 2012
CHEVROLET SILVERADO	2010, 2011, 2012
GMC SAVANA	2010, 2011, 2012
GMC SIERRA	2010, 2011, 2012

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

Recalls for the same vehicles and component
13V080000	2013-03-08. FUEL SYSTEM, OTHER:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

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
PIT5110D	2024-04-15. Service bulletin. HI
PIP5596	2018-11-13. 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.
14-06-04-002	2018-05-21. Service bulletin. This informational bulletin provides information of customer concern of the vehicle has a no start condition, caused from upfitter modifications not properly preparing the ground, causing the LPG fuel pump to lose a ground connection.
17356	2018-05-21. Service bulletin. 17356 - Emission Recall. Vehicles may experience an inoperative fuel pump leading to a no start or stall without warning. The fuel pump is to be replaced with a new design fuel pump.
14634	2018-04-23. Service bulletin. 14634 - Special Coverage. Certain 2010-2014 model year Chevrolet Express and GMC Savana vehicles may have a condition in which the fuel pump becomes inoperative due to an open circuit and/or overheating of the fuel pump module battery terminal. Dealers are to replace the fuel pump on all vehicles, and on vehicles built prior to April 25, 2012, also replace the chassis harness terminals.
PIP3343F	2018-02-21. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have an oil leak shortly after a cold start when extremely low ambient temperatures are present. Technician will need to clean the area of the oil leak, clean and dry the PCV hoses, and replace the oil fill cap with part number 12589430.
PIP4949E	2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a hard start or a no start. Technician may find Diagnostic Trouble Code DTCs P0087, P0088, P0191 or P128E. Technician will need to follow all Service Information diagnose for the Diagnostic Trouble Code. If the current Service Information diagnostic has led to Fuel Injection Pump replacement, Fuel Pressure Regulator 1 must be inspected for magnetic metal debris. If there is a questionable amount of magnetic debris found on Pressure Regulator 1 remove the Fuel Rail Pressure Sensor and/or Fuel Pressure Regulator 2 to inspect for magnetic metal debris. If technician will need to replace all of the parts listed under the latest version of PIP4949 found in the Service Forms section of Global Connect if debris is found. Clean and flush all fuel chassis lines, filter pipes, and other engine mounted fuel system pipes not replaced. Also the fuel filter housing must be cleaned with a new fuel filter installed. Then the fuel tank and fuel sender must be cleaned and flushed.
PIP5133C	2017-08-15. Service bulletin. This Preliminary Information communication advises the technician that the 6.6L Duramax Diesel Engine Fuel Injection Pump Part numbers 12645102, 12658095 and 12661059 will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.
14-06-04-002A	2017-08-15. Service bulletin. This informational bulletin provides information of customer concern of the vehicle has a no start condition, caused from upfitter modifications not properly preparing the ground, causing the LPG fuel pump to lose a ground connection.
PIT4979C	2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a buzz or rattle type noise during light acceleration around 1200-2000 Revolutions per minute. Technician will need to reposition the fuel line and bracket down away from the floor pan.