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Service bulletin 3110

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 id10010025
Published by NHTSA2004-11-04
Manufacturer's number3110
Manufacturer's date2004-01-01
NHTSA componentFUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

NHTSA's summary

ERRATIC OIL PRESSURE WITH DIAGNOSTIC TROUBLE CODE'S P0522 AND/OR P0523. *SC

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 tank

Trouble codes named

P0522, P0523

Vehicles listed
CADILLAC ESCALADE2004
CHEVROLET AVALANCHE2004
CHEVROLET EXPRESS2004
CHEVROLET SILVERADO2004
CHEVROLET SSR2004
CHEVROLET SUBURBAN2004
CHEVROLET TAHOE2004
GMC SAVANA2004
GMC SIERRA2004
GMC YUKON2004

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

Recalls for the same vehicles and component
12V3880002012-08-08. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP

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
PIT4943D2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician will need to review Techlink article from May 2013 titled "Using the Evaporative Emissions System Tester" Technician will need to follow these steps to help diagnose the issue. First after the P0442 has been verified do not disturb any of the fuel system components. The technician now can use the scan tool to close the Evaporative Emissions System. If possible change the tank pressure sensor units from inch_H2O to milimeter_Hg for better resolution. Now the vehicle can be stared to monitor the tank pressure sensor output value for approximately two minutes. If the tank pressure sensor value does change, pressurize the fuel tank side of the purge solenoid with the GE 41413-A / J 41413-A and the necessary adaptors. Now add smoke and allow pressure to stabilize for 2 minutes. If smoke is allowed to pass through the purge solenoid, replace the purge solenoid. If the tank pressure sensor value does not change, then install CH-48096 adaptor between the purge line from the canister and the purge solenoid. With the Evaporative Emissions System closed, pressurize the system through the CH-48096 adaptor and allow the system to completely stabilize, by observing the Press / Vac Gauge for a minimum of 5 minutes. Now add smoke to the system with GE 41413-A / J 41413-A after system stabilization. Now inspect the purge solenoid, engine side, fuel cap, canister vent solenoid filter and any line quick connects. When the leak is unable to be located, test under a vacuum condition. his type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the Evaporative Emissions System and then observe the FTP sensor parameter for vacuum decay.
144232017-01-26. Service bulletin. 14423 - SPECIAL COVERAGE. SOME VEHICLES CONTAIN A FUEL TANK INLET CHECK VALVE (ICV) THAT COULD FRACTURE. THE ICV IS LOCATED ABOVE THE FULL FUEL LEVEL. A FRACTURED ICV COULD ALLOW FUEL VAPORS TO PASS THROUGH AND DROPLETS OF FUEL TO ACCUMULATE ON THE SIDE OF THE FUEL TANK AS IT PASSES OVER THE FRACTURE DURING REFUELING. IF THE ICV FRACTURES, THE VEHICLE’S SERVICE ENGINE SOON (SES) LIGHT MAY ILLUMINATE, AND THE OWNER MAY NOTICE A FUEL ODOR AND/OR A FEW DROPS OF FUEL ON THE GROUND WHEN REFUELING THE VEHICLE. DEALERS ARE TO REPLACE THE FUEL TANK.
14423A2017-01-25. Service bulletin. 14423A - SPECIAL COVERAGE (REVISED PART INFORMATION). SOME 2004 MODEL YEAR BUICK RAINIER, 2003-2004 MODEL YEAR CHEVROLET SSR, 2002-2004 MODEL YEAR CHEVROLET TRAILBLAZER, CHEVROLET TRAILBLAZER EXT, GMC ENVOY, GMC ENVOY XL, AND OLDSMOBILE BRAVADA, AND 2004 MODEL YEAR GMC ENVOY XUV VEHICLES CONTAIN A FUEL TANK INLET CHECK VALVE (ICV) THAT COULD FRACTURE. THE ICV IS LOCATED ABOVE THE FULL FUEL LEVEL. A FRACTURED ICV COULD ALLOW FUEL VAPORS TO PASS THROUGH AND DROPLETS OF FUEL TO ACCUMULATE ON THE SIDE OF THE FUEL TANK AS IT PASSES OVER THE FRACTURE DURING REFUELING. IF THE ICV FRACTURES, THE VEHICLE’S SERVICE ENGINE SOON (SES) LIGHT MAY ILLUMINATE, AND THE OWNER MAY NOTICE A FUEL ODOR AND/OR A FEW DROPS OF FUEL ON THE GROUND WHEN REFUELING THE VEHICLE. DEALERS ARE TO REPLACE THE FUEL TANK.
14423A2017-01-24. Service bulletin. 14423A - SPECIAL COVERAGE (REVISED PART INFORMATION). SOME 2004 MODEL YEAR BUICK RAINIER, 2003-2004 MODEL YEAR CHEVROLET SSR, 2002-2004 MODEL YEAR CHEVROLET TRAILBLAZER, CHEVROLET TRAILBLAZER EXT, GMC ENVOY, GMC ENVOY XL, AND OLDSMOBILE BRAVADA, AND 2004 MODEL YEAR GMC ENVOY XUV VEHICLES CONTAIN A FUEL TANK INLET CHECK VALVE (ICV) THAT COULD FRACTURE. THE ICV IS LOCATED ABOVE THE FULL FUEL LEVEL. A FRACTURED ICV COULD ALLOW FUEL VAPORS TO PASS THROUGH AND DROPLETS OF FUEL TO ACCUMULATE ON THE SIDE OF THE FUEL TANK AS IT PASSES OVER THE FRACTURE DURING REFUELING. IF THE ICV FRACTURES, THE VEHICLE’S SERVICE ENGINE SOON (SES) LIGHT MAY ILLUMINATE, AND THE OWNER MAY NOTICE A FUEL ODOR AND/OR A FEW DROPS OF FUEL ON THE GROUND WHEN REFUELING THE VEHICLE. DEALERS ARE TO REPLACE THE FUEL TANK.
G-121672016-10-12. Service bulletin. 12167 - SPECIAL COVERAGE. WATER AND ROAD CONTAMINATES MAY BECOME TRAPPED IN THE PROTECTIVE CONDUIT THAT COVERS THE FUEL FILLER PIPE AND MAY CAUSE THE PIPE TO CORRODE. IF THE CORROSION CREATES A PERFORATION IN THE PIPE, THE PRESENCE OF FUEL ODOR MAY BE OBSERVED AND, ON SOME VEHICLES, A CHECK ENGINE LIGHT MAY ILLUMINATE. AS THE SIZE OF A FILLER PIPE PERFORATION INCREASES, FUEL MAY LEAK ONTO THE GROUND WHILE REFUELING THE VEHICLE. IF THE CONDITION OCCURS WITHIN THE TERMS OF THE SPECIAL COVERAGE, DEALERS ARE TO INSTALL A NEW FUEL FILLER PIPE.
SB-121672016-04-26. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-12167-A2016-03-16. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-121672013-02-13. Service bulletin. CHEVROLET/GMC: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME TRUCKS, PIPE MAY CORRODE DUE TO ROAD CONTAMINATES AND WATER BECOMING RAPPED IN PROTECTIVE CONDUIT COVERING FUEL FILLER PIPE AND PRESENCE OF FUEL ODOR MIGHT BE OBSERVED DUE TO POSSIBLE PERFORATION IN PIPE. MODELS 2003-2004 SAVANA, EXPRESS. *PE
SB-113592012-06-18. Service bulletin. GM: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SPECIAL COVERAGE ADJUSTMENT- FUEL FILLER NECK CORROSION. WATER AND ROAD CONTAMINATES MAY BECOME TRAPPED IN THE PROTECTIVE CONDUIT THAT COVERS THE FUEL FILLER PIPE AND MAY CAUSE THE PIPE TO CORRODE. THE PRESENCE OF FUEL ODOR MAY BE OBSERVED AND, ON SOME VEHICLES, A CHECK ENGINE LIGHT MAY ILLUMINATE. *JS
SB-02-06-04-03712011-03-04. Service bulletin. CHEVROLET/GMC: CHECK ENGINE LIGHT ON, FUEL TANK HARD TO FILL, DTCS P0442, P0446, P0455 OR P0449 SET (REPLACE EVAPORATIVE EMISSION (EVAP) VENT VALVE SOLENOID ASSEMBLY AND ADD/RELOCATE FILETER BOX USING SERVICE KIT). *PE