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Service bulletins for the 2015 Chevrolet Silverado

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.

3099 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

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PIT54972017-03-23. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE COOLANT LEAKING FROM THE COOLANT SURGE TANK AREA OF THE VEHICLE. TECHNICIAN SHOULD INSPECT THE SURGE TANK. IF THE LEAK IS COMING FROM THE SURGE TANK IT WILL NEED TO BE REPLACED ALONG WITH THE CAP.
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.
PIP5337B2017-03-21. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEP TO DIAGNOSE AND REPAIR THE VEHICLES THAT MAY HAVE A SHAKE OR SHUDDER DURING LIGHT THROTTLE ACCELERATION, BETWEEN 30 AND 65 MPH STEADY STATE DRIVING. ALSO SHUDDER FEELING THAT MAY BE DESCRIBED AS DRIVING OVER RUMBLE STRIPS OR ROUGH PAVEMENT. TECHNICIAN WILL DRIVE THE VEHICLE AND MONITOR THE TORQUE CONVERTER CLUTCH SLIP. THE TORQUE CONVERTER CLUTCH SLIP SPEED SHOULD BE 10 RPM OR LESS ALSO NOTE IF THE SHUDDER TAKES PLACE DURING TORQUE CONVERTER CLUTCH APPLY. IF THE TORQUE CONVERTER CLUTCH SLIP SPEED IS IN THE RANGE OF 10 RPM OR LESS THE CONDITION IS POSSIBLY RELATED TO ENGINE PERFORMANCE. IF THE SHUDDER IS ONLY PRESENT IN 4 CYLINDER MODE AND TORQUE CONVERTER CLUTCH SLIP IS 10 RPM OR LESS DEEM THE SHUDDER CONCERN NORMAL CHARACTERISTIC OF ACTIVE FUEL MANAGEMENT. IF THE SLIP SPEED IS BEYOND 10 RPM OR THERE IS SHUDDER DURING TORQUE CONVERTER CLUTCH APPLY THE TORQUE CONVERTER WILL NEED TO BE REPLACED.
PIP5230C2017-03-21. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN BEFORE REPLACING THE CRANKSHAFT TO REVIEW THE FOLLOWING. DEALER SHOULD COMPLETE THE SERVICE INFORMATION DIAGNOSTICS AND THE COST COMPARISON WORKSHEET FOR ASSEMBLY REPAIR VS REPLACEMENT. TECHNICIAN WILL USE THE LATEST VERSION OF 09-06-04-026G TO VERIFY THE ECM CALIBRATION IS NOT AN AFTERMARKET CALIBRATION. IF THE CUSTOMER PREFERS TO KEEP THE ORIGINAL NUMBERS MATCHING ENGINE PLEASE CALL TAC FOR REPAIR DIRECTION.
PIP5189A2017-03-20. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLE THAT MAY HAVE BLACK SMOKE ON A COLD START. A DUAL-PULSE INJECTION STRATEGY IS UTILIZED DURING ENGINE COLD START TO REDUCE THE TIME REQUIRED TO BRING THE CATALYTIC CONVERTER UP TO OPERATING TEMPERATURE. THIS SPLIT INJECTION STRATEGY LASTS FOR ABOUT 60 SECONDS ON COLD START. THIS PROCESS MAY CAUSE THE CUSTOMER TO SEE INCREASED BLACK SMOKE DURING COLD START AND SHOULD BE CONSIDERED NORMAL.
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.
PIP52592017-03-16. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A SERVICE ENGINE SOON WITH DIAGNOSTIC TROUBLE CODE P0300 AND AN ENGINE MISFIRE. TECHNICIAN WILL NEED TO INSPECT THE VALVE OPERATION, IF THE VALVE OR VALVES ARE NOT MOVING THE ACTIVE FUEL MANAGEMENT LIFTERS AND GUIDE ON THE BANK WITH THE CONCERN AND THE OIL PUMP AND OIL PAN ASSEMBLY SHOULD BE REPLACED.
PIP4568R2017-03-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT SOME VEHICLES MAY HAVE A SERVICE ENGINE SOON LAMP, ENGINE MISFIRE ON CYLINDER 1, 4, 6, OR 7 AND/OR TICK NOISE. TECHNICIAN WILL FOLLOW SERVICE INFORMATION DIAGNOSIS FIRST. IF SERVICE INFORMATION DIAGNOSIS DOES NOT ISOLATE THE CAUSE OF THIS CONCERN PERFORM A CYLINDER DEACTIVATION ACTIVE FUEL MANAGEMENT SYSTEM COMPRESSION TEST IN SERVICE INFORMATION. IF THE RUNNING COMPRESSION OF THE MISFIRING CYLINDER STAYS BELOW 25 POUNDS PER SQUARE INCH REGARDLESS OF THE ACTIVE FUEL MANAGEMENT SOLENOID BEING COMMANDED ON OR OFF, AN ACTIVE FUEL MANAGEMENT LIFTER IS MECHANICALLY COLLAPSED/STUCK OR UNLOCKING AS SOON AS THE ENGINE IS STARTED. REPLACE ALL ACTIVE FUEL MANAGEMENT LIFTERS, AND ALL PLASTIC LIFTER GUIDES. ALSO PERFORM THE CYLINDER DEACTIVATION ACTIVE FUEL MANAGEMENT VALVE LIFTER OIL MANIFOLD DIAGNOSIS AND TESTING IN SERVICE INFORMATION. IF IT ISOLATES A CONCERN WITH THE VALVE LIFTER OIL MANIFOLD, REPLACE IT AND REEVALUATE THE CONCERN. THE ACTIVE FUEL MANAGEMENT LIFTERS CAN ALSO BE MONITORED FOR PROPER OPERATION BY CAREFULLY INSPECTING THE CYLINDER 1, 4, 6, AND 7 ROCKERS AND VALVES WHILE CRANKING OR BRIEFLY AND SAFELY RUNNING THE ENGINE WITH THE VALVE COVERS REMOVED. IF THE VALVE OR VALVES OF AN ACTIVE FUEL MANAGEMENT CYLINDER STOP MOVING WHILE DOING THIS TEST, THE ACTIVE FUEL MANAGEMENT LIFTER IS CAUSING THE CONCERN. FOR 2008-2009 FULL SIZE TRUCK/SUV OR A 2007-2009 CHEVROLET TAHOE WITH THE POLICE PACKAGE REPROGRAM THE ENGINE CONTROL MODULE. ON THE 2008-2009 PONTIAC G8, 2010-2011 CAMARO, AND 2007-2010 FULL SIZE TRUCKS WITH ACTIVE FUEL MANAGEMENT, ALSO DETERMINE IF THE ACTIVE FUEL MANAGEMENT PRESSURE RELIEF VALVE SHIELD THAT IS LISTED IN THE LATEST VERSION OF 10-06-01-008 HAS EVER BEEN INSTALLED. ON PASSENGER CARS WITH THE LS4 ENGINE, DETERMINE IF THE UPDATED OIL PAN GASKET THAT IS LISTED IN THE LATEST VERSION OF 11-06-01-007 HAS BEEN INSTALLED.
G-1984262017-03-03. Service bulletin. ENGINE. 14466 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO REPROGRAM THE ECM (ENGINE CONTROL MODULE) ON CERTAIN TRUCKS EQUIPPED WITH THE 6.6L DURAMAX DIESEL ENGINE (RPO LML). IF A BRAKING EVENT IS IMMEDIATELY FOLLOWED BY AN AGGRESSIVE ATTEMPT TO ACCELERATE ON SOME OF THESE VEHICLES, ESPECIALLY WHEN DRIVING WITH ONE FOOT ON THE BRAKE AND ONE FOOT ON THE THROTTLE, THE CUSTOMER MAY EXPERIENCE UP TO A 5 SECOND LAG IN ACCELERATION PERFORMANCE DUE TO THE ENHANCED ELECTRONIC PEDAL OVERRIDE BEING ACTIVATED (“EEPO INTERVENTION”) AND A SUBSEQUENT REDUCED POWER MODE. EEPO INTERVENTION IS NORMAL, BUT IN THIS VEHICLE, THE EEPO INTERVENTION MAY BE MORE FREQUENT THAN DESIRED DUE TO CERTAIN CALIBRATIONS. THE DEALER WILL REFLASH THE ENGINE CONTROL MODULE WITH A REVISED CALIBRATION AT THE NEXT SERVICE VISIT.
G-1957822017-02-23. Service bulletin. ENGINE. 14231 - EMISSIONS RECALL. IMPCO AUTOMOTIVE IS CONDUCTING THIS EMISSION RECALL. FOR THE CONVENIENCE OF OUR CUSTOMERS, GENERAL MOTORS HAS AGREED TO ASSIST IN ADMINISTERING THIS RECALL THROUGH ITS CHEVROLET AND GMC DEALERS. IMPCO AUTOMOTIVE HAS DECIDED TO CONDUCT A VOLUNTARY EMISSION RECALL INVOLVING CERTAIN VEHICLES EQUIPPED WITH A COMPRESSED NATURAL GAS (CNG) SYSTEM. THESE VEHICLES WERE BUILT WITH AN INCORRECT ECM CALIBRATION. DEALERS ARE TO REPROGRAM THE ENGINE CONTROL MODULE (ECM). THE CHANGE WILL ALLOW THE VEHICLE TO OPERATE AS ORIGINALLY DESIGNED.
354602017-02-03. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. 35460 - CUSTOMER SATISFACTION PROGRAM. SOME VEHICLES EQUIPPED WITH A DURAMAX DIESEL ENGINE (RPO LML) MAY HAVE A CONDITION IN WHICH THE INTAKE AIR HEATER’S FIELD-EFFECT TRANSISTOR COULD GENERATE EXCESSIVE HEAT IF THE SYSTEM VOLTAGE EXCEEDS 13.5V. THIS HEAT CAN CAUSE A SHORT CIRCUIT IN THE TRANSISTOR AND, IN RARE CASES, A FIRE IN THE VEHICLE’S ENGINE COMPARTMENT. DEALERS ARE TO REPROGRAM AND UPDATE THE GLOW-PLUG CONTROL MODULE WITH NEW SOFTWARE WHICH LIMITS THE INTAKE AIR HEATER INPUT VOLTAGE TO 13.5V.
150832017-02-01. Service bulletin. EQUIPMENT; ENGINE. 15083 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSTALL AN ENGINE VALVE STEM OIL SEAL ON CERTAIN VEHICLES EQUIPPED WITH A 5.3L ENGINE (RPO L83). THESE VEHICLES WERE INADVERTENTLY BUILT WITHOUT AN ENGINE VALVE STEM OIL SEAL. THE EFFECT OF THE CONDITION IS THAT ENGINE OIL MAY SEEP INTO THE CYLINDER AND RESULT IN PRE-MATURE ENGINE WEAR. IF UNCORRECTED THE CONDITION OVER TIME COULD LEAD TO NON-COMPLIANCE TO EMISSIONS STANDARDS.
152172017-02-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM:WIRING. 15217 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSPECT THE ROUTING OF THE TRANSMISSION CONTROL MODULE (TCM) BRANCH OF THE ENGINE-WIRING HARNESS ON CERTAIN 2015 CHEVROLET SILVERADO AND GMC SIERRA HD VEHICLES THAT ARE EQUIPPED WITH DUAL GENERATORS (KHB). DEALERS ARE TO ENSURE THAT THE HARNESS IS ROUTED PROPERLY AND SECURED WITH A FIR-TREE CLIP. ON THESE VEHICLES, THE TCM BRANCH OF THE ENGINE-WIRING HARNESS MAY HAVE BEEN MISROUTED AND NOT SECURED WITH AN EXISTING FIR-TREE CLIP ON THE AUXILIARY-POSITIVE BATTERY CABLE, POTENTIALLY ALLOWING THE HARNESS TO COME IN CONTACT WITH EITHER THE AUXILIARY-GENERATOR PULLEY OR BELT.
151782017-02-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL); ENGINE. "15178 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO PERFORM A DRIVE AUDIT AND, IF NECESSARY, REPLACE THE REACTION/OUTPUT CARRIER ASSEMBLY AND ASSOCIATED PARTS ON CERTAIN 2015 MODEL YEAR CADILLAC ESCALADE, ESCALADE ESV; CHEVROLET SILVERADO LD CREW, SILVERADO LD CREW LTZ, SILVERADO LD EXT LTZ; AND GMC SIERRA LD CREW, SIERRA LD CREW DENALI, SIERRA LD EXT, YUKON, YUKON DENALI, YUKON XL, YUKON XL DENALI VEHICLES EQUIPPED WITH AN 8-SPEED TRANSMISSION (M5U) AND A 6.2L ENGINE (L86). SOME OF THESE VEHICLES MAY EXHIBIT A TRANSMISSION GEAR WHINE NOISE AT 1000-2000 RPM AND BETWEEN 20 MPH (32 KPH) AND 35 MPH (56 KPH)."
156172017-01-26. Service bulletin. ENGINE. 15617 - CUSTOMER SATISFACTION PROGRAM. CERTAIN VEHICLES EQUIPPED WITH A 6.2L (L86) ENGINE AND ENHANCED TOWING (NHT) MAY HAVE BEEN BUILT WITH AN INNER GRILLE NOT INTENDED FOR THIS APPLICATION. AT THE TRUCKS ADVERTISED TOWING CAPACITY OF 17,700 LBS. (8,025 KG.), ENGINE COOLANT AND ENGINE OIL TEMPERATURES MAY EXCEED DESIGN INTENT. THERE IS NO ENGINE OIL TEMP MONITORING OR CUSTOMER WARNING. PROLONGED TIME, OR MULTIPLE DRIVE CYCLES OVER THE ALLOWABLE MAX OIL TEMP MAY RESULT IN REDUCED OIL LIFE, ENGINE COMPONENT THERMAL STRESS, AND EVENTUAL ENGINE FAILURE. DEALERS ARE TO REPLACE THE INNER GRILLE.
16-NA-2122017-01-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); EQUIPMENT. THIS INFORMATION BULLETIN PROVIDE INFORMATION ON A NEW WAY TO LOOK AT NOX SENSOR READINGS AND EXHAUST TEMPERATURE DURING A DPF REGENERATION OR A REDUCTANT FLUID QUALITY TEST.
16-NA-2042017-01-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. THIS INFORMATIONAL BULLETIN IS A SUPPLEMENT TO THE DURAMAX DIESEL COOLANT SYSTEM FILL AND HEAD GASKET REPLACEMENT PROCEDURE FOUND IN THE SERVICE INFORMATION.
PIP5382B2016-11-03. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION HAS THE STEPS FOR DIAGNOSING THE CONCERN OF EXCESSIVE OIL CONSUMPTION FOR THE GENERATION 5 ENGINE. DIAGNOSTIC INFORMATION IS PROVIDED FOR THE TECHNICIAN TO GATHER PRIOR TO CONTACTING THE PRODUCT QUALITY CENTER FOR FURTHER ASSISTANCE.
PIP5189B2016-11-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN OF BLACK SMOKE WHEN STARTING THE VEHICLE AFTER SITTING.
PIT5307D2016-10-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM; SUSPENSION. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A SERVICE ENGINE SOON MALFUNCTION INDICATOR LAMP, ANTILOCK BRAKING SYSTEM MALFUNCTION INDICATOR LAMP, SERVICE SUSPENSION SYSTEM MESSAGE, MISFIRE, HESITATION, NO CRANK, HEATER-VENT-AIR CONDITIONING INOPERATIVE. TECHNICIAN MAY FIND F11UA, F104UA, F35UA, AND OR F60UA BLOWN. TECHNICIAN SHOULD INSPECT THE ENGINE HARNESS NEAR THE VACUUM PUMP PULLEY TO BE CHAFING. TECHNICIAN WILL NEED TO REROUTE THE WIRE HARNESS AND REPAIR AND DAMAGED WIRES.
PIP5382C2016-10-20. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT GENERATION 5 ENGINES WITH REGULAR PRODUCTION OPTION CODE L83, L86, OR LV3 MAY HAVE AN OIL CONSUMPTION CONCERN WERE ONE QUART IN 2000 MILES IS BEING USED. DEALER WILL CONFIRM OIL LEVEL WAS PROPERLY CHECKED PER OWNER’S MANUAL, AND CHECK THE BOLT TORQUE ON THE VALVE LIFTER OIL MANIFOLD ASSEMBLY, BEFORE YOU CONTACTING GENERAL MOTORS PRODUCT QUALITY CENTER.
PIP5337E2016-10-20. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE VEHICLES THAT MAY HAVE A SHAKE OR SHUDDER DURING LIGHT THROTTLE ACCELERATION, BETWEEN 30 AND 65 MPH STEADY STATE DRIVING. ALSO SHUDDER FEELING THAT MAY BE DESCRIBED AS DRIVING OVER RUMBLE STRIPS OR ROUGH PAVEMENT. TECHNICIAN WILL DRIVE THE VEHICLE AND MONITOR THE TORQUE CONVERTER CLUTCH SLIP. THE TORQUE CONVERTER CLUTCH SLIP SPEED SHOULD BE 10 RPM OR LESS ALSO NOTE IF THE SHUDDER TAKES PLACE DURING TORQUE CONVERTER CLUTCH APPLY. IF THE TORQUE CONVERTER CLUTCH SLIP SPEED IS IN THE RANGE OF 10 RPM OR LESS THE CONDITION IS POSSIBLY RELATED TO ENGINE PERFORMANCE. IF THE SHUDDER IS ONLY PRESENT IN 4 CYLINDER MODE AND TORQUE CONVERTER CLUTCH SLIP IS 10 RPM OR LESS DEEM THE SHUDDER CONCERN NORMAL CHARACTERISTIC OF ACTIVE FUEL MANAGEMENT. IF THE SLIP SPEED IS BEYOND 10 RPM OR THERE IS SHUDDER DURING TORQUE CONVERTER CLUTCH APPLY THE TORQUE CONVERTER WILL NEED TO BE REPLACED.
PIP4786C2016-10-20. Service bulletin. ENGINE AND ENGINE COOLING. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE LOW OIL PRESSURE MESSAGE. TECHNICIAN MAY ALSO FIND A DIAGNOSTIC TROUBLE CODE P0521 IN THE ENGINE CONTROL MODULE. TECHNICIAN SHOULD FOLLOW ALL PUBLISHED SERVICE INFORMATION DIAGNOSIS. WHEN USING A SCAN TOOL IF THE OIL PRESSURE IS LOW BUT THE OIL PRESSURE AT THE OIL FILTER HOUSING IS CORRECT, TECHNICIAN SHOULD INSPECT THE VALVE LIFTER OIL FILTER FOR DEBRIS/SLUDGE THAT COULD BE RESTRICTING OIL FLOW TO THE OIL PRESSURE SENSOR. TECHNICIAN SHOULD REMOVE THE VALVE LIFTER OIL FILTER AND CLEAN IT. IF THE VALVE LIFTER OIL FILTER CANNOT BE CLEANED REPLACE IT.
PI1394A2016-10-19. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES ADDITIONAL INFORMATION ON HOW TO INSTALL PISTONS AND SUGGEST WHAT TOOLS TO USE.

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