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Service bulletins for the 2014 Chevrolet Express

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.

1714 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
PIC5491J2017-05-02. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT HAVE AN ONSTAR SYSTEM THAT WILL NOT POWER UP. TECHNICIAN SHOULD TURN OFF THE IGNITION AND CANCEL RETAINED ACCESSORY POWER. AFTER THE VEHICLE HAS POWERED DOWN REMOVE POWER TO THE ONSTAR MODULE FOR FIVE MINUTES. AFTER THE POWER HAS BEEN REMOVED FOR FIVE MINUTES, IF THE ONSTAR SYSTEM IS WORKING RELEASE THE VEHICLE. IF THE ONSTAR SYSTEM IS STILL INOPERATIVE CONTINUE WITH PUBLISHED SERVICE INFORMATION DIAGNOSTICS.
PIC5491J2017-04-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT HAVE AN ONSTAR SYSTEM THAT WILL NOT POWER UP. TECHNICIAN SHOULD TURN OFF THE IGNITION AND CANCEL RETAINED ACCESSORY POWER. AFTER THE VEHICLE HAS POWERED DOWN REMOVE POWER TO THE ONSTAR MODULE FOR FIVE MINUTES. AFTER THE POWER HAS BEEN REMOVED FOR FIVE MINUTES, IF THE ONSTAR SYSTEM IS WORKING RELEASE THE VEHICLE. IF THE ONSTAR SYSTEM IS STILL INOPERATIVE CONTINUE WITH PUBLISHED SERVICE INFORMATION DIAGNOSTICS.
PIC5453B2017-04-10. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT GENERAL MOTORS AND GENERAL MOTORS OF CANADA COMPANY DO NOT SUPPORT CROSS BORDER SALES. THE GENERAL MOTORS OF CANADA CUSTOMER CARE CENTRE IS THE SOLE AUTHORIZED PROVIDER OF A CERTIFICATION CONFIRMATION LETTER WHICH HELPS OUR CUSTOMERS IDENTIFY IF THEIR VEHICLES MEETS THE REQUIRED USA REGULATORY STANDARDS NECESSARY FOR IMPORTATION INTO THE USA.
PIT54952017-03-23. Service bulletin. EQUIPMENT; STRUCTURE:BODY:BUMPERS; PARKING BRAKE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON HOW TO DISABLE THE REAR PARK ASSIST. IF THE REAR BUMPER WAS REPLACED OR REMOVED TO DISABLE THE REAR PARK ASSIST, REMOVING THE OBS DET FUSE 33 (10 AMP) FROM THE UNDERHOOD FUSE BLOCK WILL WORK.
PIT4720D2017-03-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT AFTER REPLACING THE INSTRUMENT PANEL CLUSTER THE EXCHANGE CENTER IS UNABLE TO PROGRAM THE ACTUAL MILEAGE ON THE ODOMETER OR THE ACTUAL MILEAGE IS UNKNOWN. DEALER WILL NEED TO FOLLOW DEALER TO THE GENERAL MOTORS SERVICE POLICIES AND PROCEDURES MANUAL SECTION 5.2.4 ODOMETER SERVICING.
PIP53702017-03-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT SOME VEHICLE MAY HAVE AN “EXHAUST FLUID QUALITY POOR” ON THE DRIVER INFORMATION CENTER OR A DIESEL EXHAUST FLUID WARNING LAMP ON OR OTHER EXHAUST FLUID QUALITY RELATED CONCERNS. TECHNICIAN WILL INSPECT THE DIESEL EXHAUST FLUID FOR CONTAMINATION. TECHNICIAN SHOULD USE SERVICE INFORMATION FOR CONTAMINANTS IN DIESEL EXHAUST FLUID DIAGNOSIS AND USE SPECIAL TOOL J26568 OR EN50422 DIESEL EXHAUST FLUID REFRACTOMETER FOR FLUID TESTING.
PIP5226A2017-03-21. Service bulletin. EQUIPMENT. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT FINDING NEEDLE BEARINGS DURING AN OIL CHANGE. TECHNICIAN WILL GAIN ACCESS TO THE ROLLER ROCKERS TO INSPECT THEM. ONLY REPLACE THE ROLLER ROCKER THAT IS MISSING NEEDLE BEARINGS. BE SURE TO CLEAN THE OIL DRAINS TO RETRIEVE THE NEEDLE BEARINGS. EACH ROLLER ROCKER HAS 66 BEARINGS.
PIP5104B2017-03-20. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A COLD ENGINE TICK NOISE FOR 50 SECONDS AT START UP. TECHNICIAN DETERMINES IF THE TICK NOISE IS POSSIBLY COMING FROM THE EXHAUST MANIFOLD, AS THIS NOISE COULD EASILY BE MISTAKEN FOR AN ENGINE TICK NOISE. IF YOUR SI DIAGNOSIS DOES NOT ISOLATE THE CAUSE OF THIS CONCERN, THIS CONCERN SHOULD BE CONSIDERED A VEHICLE DESIGN CHARACTERISTIC OF THE ECM CALIBRATION AND NO ADDITIONAL REPAIRS SHOULD BE PERFORMED.
PIP4912D2017-03-20. Service bulletin. EQUIPMENT; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON VEHICLES THAT MAY HAVE AN INTERMITTENT HIGH IDLE. IF A TECHNICIAN HAS DUPLICATED, OR THE CUSTOMER DESCRIPTION ALIGNS WITH THE SPEEDS MENTIONED IN THE IDLE SPEED DESCRIPTION TABLES, THE IDLE SPEED SHOULD BE CONSIDERED A NORMAL CHARACTERISTIC OF CURRENT VEHICLE DESIGN.
PIT53672017-03-16. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A BLANK DISPLAYS, FLASHING DISPLAYS, “ERROR OR UPDATE FAILED MESSAGES”, NAVIGATION MAP NOT LOADING, BLUETOOTH OR USB CONCERNS. TECHNICIAN SHOULD INSPECT THE USB/SD CARD PORT FOR A SD CARD OR A DEVICE PLUG INTO ANY OF THE USB PORTS.
PIT3271G2017-03-16. Service bulletin. EQUIPMENT. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT CHANGING THE TIRE AND WHEEL SIZE ON VEHICLES. GENERAL MOTORS WILL ONLY SUPPORT A TIRE CALIBRATION FOR TIRES THAT HAVE BEEN SIZED, TESTED AND DESIGNED FOR THE VEHICLE IN QUESTION AND ITS APPLICATIONS. TECHNICIAN SHOULD NOT USE THE INFORMATION THAT IS PROVIDED BY THE ANTILOCK BRAKING SYSTEM TIRE SIZE SELECTION.
PIP5204E2017-03-15. Service bulletin. EQUIPMENT. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE DIESEL OXIDATION CONVERTER PART RESTRICTION HAS ENDED. DEALER CAN NOW ORDER THE PARTS THROUGH THE REGULAR CUSTOMER CARE AND AFTERSALES PARTS PROCESS.
PIC3278F2017-03-14. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THE STEPS NEEDED TO DIAGNOSE AND REPAIR THE VEHICLES THAT MAY HAVE UNWANTED OR PHANTOM PHONE CALLS. TECHNICIAN WILL NEED TO DETERMINE WHAT TYPE OF CALL THE CUSTOMER IS HAVING THAT IS UNWANTED. THE VEHICLE MAY RECEIVE AN INCOMING CALL JUST LIKE ANY OTHER PHONE. TYPICALLY THE CUSTOMER WILL HEAR THE PHONE RINGING IN THE VEHICLE. THIS SCENARIO ALSO INCLUDES INCOMING BLUETOOTH CALLS. ONE TYPE OF UNWANTED CALL CAN BE MADE IF THE KEY PAD IS FAULTY THE ONSTAR SYSTEM WILL TRY TO MAKE A BLUE BUTTON CALL FOR SHORTED VOLTAGE IN THE CIRCUITS. THE ONSTAR MODULE COULD HAVE AN INTERNAL FAULT AND PRODUCE A PHONE UNAVAILABLE AUDIO MESSAGE ALSO IT MAY HAVE A DIAGNOSTIC TROUBLE CODE U1500 OR B1000. REFER TO DIAGNOSTICS FOR THE DIAGNOSTIC TROUBLE CODE MAKING SURE TO FOLLOW ANY APPLICABLE BULLETINS OR PRELIMINARY INFORMATION SHEETS. A GREADYH OR GONSTAR READYH AUDIO MESSAGE HEARD WHILE DRIVING. IN SOME CASES IT HAS BEEN FOUND THAT THE CUSTOMER IS INADVERTENTLY PRESSING THE PUSH TO TALK BUTTON ON THE STEERING WHEEL CONTROLS. ON RARE OCCASIONS, OTHER ISSUES IN THE STEERING COLUMN OR STEERING WHEEL CONTROL SYSTEM MAY INDUCE THIS CONCERN.
PI0652A2017-03-14. Service bulletin. EQUIPMENT. THIS PRELIMINARY BULLETIN PROVIDES A INFORMATION ON HOW TO REMOVE THE SEIZED TEMPERATURE SENSORS FROM THE DPF.
PI0690B2017-03-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS PRELIMINARY BULLETIN PROVIDES INFORMATION TO INSPECT THE BATTERY FOR PROPER GROUNDING TO THE FRAME AND ENGINE IF THE CUSTOMER BRINGS THE VEHICLE IN FOR ERRATIC SHIFTING AND MIL ON.
G-1985892017-03-03. Service bulletin. SUSPENSION:FRONT. 14313 - CUSTOMER SATISFACTION. CERTAIN VANS MAY HAVE A CONDITION IN WHICH THE FRONT TORSION BAR MAY FRACTURE DURING OR AFTER BEING LOADED. IF THE TORSION BAR FRACTURES, THE TRIM HEIGHT WILL IMMEDIATELY DROP ON THE FRACTURED SIDE. THE FRONT SUSPENSION ALIGNMENT WILL CHANGE AND THE WEIGHT DISTRIBUTION WILL SHIFT TO THE VEHICLE SIDE WITH THE NON-FRACTURED TORSION BAR. IF THE DRIVER IS NOT HOLDING THE STEERING WHEEL, IT WILL ROTATE APPROXIMATELY 14 DEGREES TO THE FRACTURED SIDE. WITH HANDS ON THE WHEEL, THE STEERING FORCE FEEDBACK WOULD BE SIMILAR TO A LARGE WIND GUST OR POTHOLE HIT. DEALERS ARE TO REPLACE THE LEFT AND RIGHT FRONT SUSPENSION TORSION BARS.
G-1978282017-03-03. Service bulletin. EQUIPMENT. 14151 - CUSTOMER SATISFACTION (MESSAGE ONLY, VIN LIST WAS NOT ATTACHED TO THE PREVIOUS MESSAGE). THIS MESSAGE IS TO ALERT DEALERS THAT GENERAL MOTORS HAS BECOME AWARE THAT SOME CUSTOMERS MAY BE OVERFILLING THEIR COMPRESSED NATURAL GAS (CNG) TANKS IN COLD WEATHER BY ADDING CNG BEYOND THE RECOMMENDED FILL PRESSURE. IF CNG TANKS ARE FILLED TO A HIGHER PRESSURE THAN RECOMMENDED AT A GIVEN AMBIENT TEMPERATURE, THEN MOVED TO A MUCH HIGHER AMBIENT TEMPERATURE ENVIRONMENT, EXPANSION OF THE GAS CAUSED BY THE TEMPERATURE CHANGE MAY CAUSE PRESSURE RELIEF DEVICES ON THE VEHICLE CNG TANK(S) TO RELEASE GAS, AS DESIGNED. IF AN IGNITION SOURCE WERE PRESENT, THIS COULD CREATE A RISK OF FIRE OR EXPLOSION. AN ADVISORY LETTER WAS MAILED TO ALL INVOLVED CUSTOMERS ALONG WITH AND OWNER MANUAL CNG SUPPLEMENT AND TWO LABELS WITH INSTRUCTIONS.
G-1977352017-03-03. Service bulletin. EQUIPMENT. 14151 - CUSTOMER SATISFACTION (MESSAGE ONLY WITH LETTER). THIS MESSAGE IS TO ALERT DEALERS THAT GENERAL MOTORS HAS BECOME AWARE THAT SOME CUSTOMERS MAY BE OVERFILLING THEIR COMPRESSED NATURAL GAS (CNG) TANKS IN COLD WEATHER BY ADDING CNG BEYOND THE RECOMMENDED FILL PRESSURE. IF CNG TANKS ARE FILLED TO A HIGHER PRESSURE THAN RECOMMENDED AT A GIVEN AMBIENT TEMPERATURE, THEN MOVED TO A MUCH HIGHER AMBIENT TEMPERATURE ENVIRONMENT, EXPANSION OF THE GAS CAUSED BY THE TEMPERATURE CHANGE MAY CAUSE PRESSURE RELIEF DEVICES ON THE VEHICLE CNG TANK(S) TO RELEASE GAS, AS DESIGNED. IF AN IGNITION SOURCE WERE PRESENT, THIS COULD CREATE A RISK OF FIRE OR EXPLOSION. AN ADVISORY LETTER WAS MAILED TO ALL INVOLVED CUSTOMERS ALONG WITH AND OWNER MANUAL CNG SUPPLEMENT AND TWO LABELS WITH INSTRUCTIONS.
141512017-02-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 14151 - CUSTOMER SATISFACTION PROGRAM (REVISED POPULATION, LETTER ONLY). INFORMATION ABOUT CUSTOMERS OVERFILLING THEIR COMPRESSED NATURAL GAS (CNG) TANKS IN COLD WEATHER IN CERTAIN VEHICLES WAS PREVIOUSLY SENT. ADDITIONAL 13 VEHICLES ARE ADDED FOR WHICH WE DO NOT HAVE CURRENT OWNER NAME AND ADDRESS. A LIST IS ATTACHED WITH INVOICING BUSINESS ASSOCIATE CODE, PLEASE USE THE LIST TO ASSIST WITH IDENTIFYING THE OWNER AND LOCATION OF THE VEHICLE. IF YOU ARE ABLE TO LOCATE OWNER INFORMATION FOR ONE OF THESE VEHICLES, FOLLOW THE ORDERING INSTRUCTIONS PROVIDED IN THE ORIGINAL MESSAGE TO OBTAIN A FUEL FILLER DOOR LABEL, A GLOVE BOX HANG TAG AND AN OWNER MANUAL INSERT. UPON RECEIPT, PLEASE FORWARD THE KIT TO THE CUSTOMER FOR SELF-INSTALLATION.
147302017-02-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. 14730 - CUSTOMER SATISFACTION PROGRAM. CERTAIN VEHICLES, EQUIPPED WITH ENGINE RPO L96 (6.0L V-8) AND TRANSMISSION RPO MYD (6 SPEED AUTO), MAY HAVE A CONDITION IN WHICH HIGH DUTY CYCLE USE WHILE PULLING TRAILERS AND/OR VEHICLES (SUCH AS FLEET CUSTOMERS DRIVING CUT-AWAY MODELS WITH 16 FOOT BOXES) CAN EXCEED THE TARGET ENERGY INPUT TO THE CLUTCH. THIS MAY LEAD TO FASTER TORQUE CONVERTER CLUTCH FRICTION MATERIAL WEAR THAN EXPECTED. SOME OPERATORS OF VEHICLES WITH THIS CONDITION HAVE REPORTED A DRIVELINE VIBRATION OR SHUDDER FEELING. DEALERS ARE TO REPROGRAM THE TRANSMISSION CONTROL MODULE (TCM).
14515 MESSAGE2017-02-02. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM; EQUIPMENT. 14515 - CUSTOMER SATISFACTION PROGRAM (STOP DELIVERY EXPANSION). APPROXIMATELY 8,776 ADDITIONAL VEHICLES HAVE BEEN ADDED TO THE RECALL POPULATION. THESE VEHICLES WERE SERVICED WITH A CHASSIS ELECTRONIC MODULE SUSPECTED OF CONTAINING INTERNAL CONTAMINATION. A VERY SMALL NUMBER OF OLDER MODEL VEHICLES ARE NOW INCLUDED AND IDENTIFIED IN IVH WHICH HAS BEEN UPDATED AS OF DECEMBER 2, 2014. ADDITIONALLY, THE IVH SYSTEM ISSUE THAT WAS COMMUNICATED HAS BEEN RECTIFIED AND ALL INVOLVED VEHICLES SHOULD NOW SHOW "INCOMPLETE – REMEDY NOT YET AVAILABLE".
143012017-02-01. Service bulletin. SERVICE BRAKES. 14301 - SPECIAL COVERAGE. ON SOME VEHICLES, EQUIPPED WITH A HINGED LEFT SIDE REAR DOOR (E26), INADEQUATE CLEARANCE MAY RESULT IN ABRASION TO ONE OR BOTH REAR BRAKE LINES. THIS COULD CAUSE BRAKE FLUID LOSS RESULTING IN DECREASED BRAKE LINE PRESSURE, INCREASED BRAKE PEDAL TRAVEL AND INCREASED STOPPING DISTANCE. ALERTS ANNOUNCING THIS POTENTIAL CONDITION ARE: A SUDDEN INCREASE IN BRAKE PEDAL TRAVEL; ILLUMINATION OF “BRAKES” LIGHT AND STABILITRAK SYMBOL; DISPLAY OF “SERVICE BRAKE,” “SERVICE STABILITRAK,” AND “SERVICE TRACTION CONTROL” MESSAGES IN THE DRIVER INFORMATION CENTER (DIC); AND/OR CHIMES WILL BE HEARD. DEALERS ARE TO REPLACE REAR BRAKE LINES WITH PRE-FORMED LINES BASED ON VEHICLE CONTENT.
146342017-02-01. Service bulletin. ENGINE. 14634 -SPECIAL COVERAGE (MESSAGE ONLY - POPULATION CHANGE). PLEASE BE ADVISED 2010-2014 CHEVROLET EXPRESS AND GMC SAVANA VEHICLES EQUIPPED WITH A 6.6L DIESEL ENGINE (LMM/LGH), 5.3L FLEX-FUEL ENGINE (LMF), OR A 6.0L LIQUID PROPANE/COMPRESSED NATURAL GAS ENGINE (LC8) ARE NOT INCLUDED IN THIS PROGRAM BUT WERE INADVERTENTLY INCLUDED.
146532017-01-31. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. 14653 - SPECIAL COVERAGE. SOME 2010-2014 MODEL YEAR CHEVROLET EXPRESS, 2011-2014 MODEL YEAR CHEVROLET SILVERADO HD, 2010-2014 MODEL YEAR GMC SAVANA AND 2011-2014 MODEL YEAR GMC SIERRA HD VEHICLES EQUIPPED WITH A 6.6L ENGINE (RPO LML OR LGH), MAY HAVE A CONDITION WHERE THE INDIRECT FUEL INJECTOR CAN BECOME STUCK IN THE CLOSED POSITION OR CAN HAVE LOW FLOW. THIS CONDITION COULD RESULT IN THE ILLUMINATION OF THE MALFUNCTION INDICATOR LIGHT (MIL). DEALERS ARE TO REPLACE THE INDIRECT FUEL INJECTOR AS NECESSARY WITH AN IMPROVED SERVICE PART.
15823 LETTER2017-01-23. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:AUXILLARY TANK. 15823 - CUSTOMER ADVISORY LETTER. THIS COMMUNICATION WAS TO INFORM DEALERS THAT A CUSTOMER MAILING WAS TAKING PLACE. THE LETTER INFORMS THE CUSTOMERS TO INSPECT FOR LEAKS OR DAMAGE TO THE FUEL FILLER NECK LINE AND/OR THE CARGO TANK HIGH PRESSURE FLEX LINES. TO ADDRESS THIS POTENTIAL CONDITION, CUSTOMERS ARE INSTRUCTED TO HAVE A CERTIFIED CNG TECHNICIAN INSPECT THE FUEL FILLER NECK LINE AND THE CARGO TANK HIGH PRESSURE FLEX LINE IN ACCORDANCE WITH GM SERVICE INFORMATION PROCEDURES. IN ADDITION, TO BE SURE THE CUSTOMER’S VEHICLE DOES NOT HAVE THIS CONDITION, CUSTOMERS ARE ALSO INSTRUCTED TO CONTINUE INSPECTIONS ANNUALLY AS PART OF ROUTINE MAINTENANCE. GM HAS UPDATED THE MAINTENANCE SCHEDULE IN THE CNG VEHICLES OWNER’S MANUAL SUPPLEMENT TO INCLUDE AN ANNUAL INSPECTION OF ALL CNG FLEX LINES.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.