Service bulletins for the 2012 Chevrolet Tahoe
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.
1746 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Engine are shown. Show all
| PIP4568Q | 2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. 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. |
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| PIP5169 | 2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that are setting Diagnostic Trouble Code P0300 after engine repairs. Technician will need to ensure that injector connectors for cylinder 5-7 and 6-8 are not crossed. |
| PIP5168B | 2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a no crank concern. Technician will need to check the valve train for movement when the engine is cranked. If the valve train is not moving while the crankshaft is moving the front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the valve train is rotating during inspection, disconnect the Camshaft Position sensor and check if the engine will start. If the engine starts front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the engine does not start with the Camshaft Position sensor disconnected the follow published ?Engine Cranks But Does Not Run? diagnosis in Service Information. Also perform an Engine Compression Test and Cylinder Leakage Test in Service Information documents all results. If the Service Information procedures above isolate an engine mechanical concern then removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. |
| PIT4539R | 2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication advises the technician that the Drive Motor Generator Control Module, also known as PIM) for the 2-Mode Hybrid Utilities and Trucks are being placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance. |
| PIP3343D | 2017-08-15. Service bulletin. ENGINE. 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. |
| PIP5168C | 2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); ENGINE. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a no crank concern. Technician will need to check the valve train for movement when the engine is cranked. If the valve train is not moving while the crankshaft is moving the front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the valve train is rotating during inspection, disconnect the Camshaft Position sensor and check if the engine will start. If the engine starts front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the engine does not start with the Camshaft Position sensor disconnected the follow published ?Engine Cranks But Does Not Run? diagnosis in Service Information. Also perform an Engine Compression Test and Cylinder Leakage Test in Service Information documents all results. If the Service Information procedures above isolate an engine mechanical concern then removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. |
| PIP4138P | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter. |
| 10-00-89-005F | 2017-07-18. Service bulletin. EQUIPMENT; ENGINE. This informational bulletin provides warranty policy information on revised wiring repair labor operations and required additional information. |
| 10-00-89-005F | 2017-07-18. Service bulletin. EQUIPMENT; ENGINE. This informational bulletin provides warranty policy information on revised wiring repair labor operations and required additional information. |
| 16-NA-222 | 2017-05-25. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES THE TECHNICIAN WITH WHAT MAY HAPPEN TO AN ENGINE DUE TO LACK OF MAINTENANCE. |
| PIT5206E | 2017-05-22. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; PARKING BRAKE; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN WITH THE STEPS ON DIAGNOSING AND REPAIRING VEHICLES THAT MAY HAVE UNWANTED GRADE BRAKING, REDUCED ENGINE POWER WITH NO DRIVER INFORMATION CENTER MESSAGES “ BRAKE PEDAL OVERRIDE FEATURE “, TRANSMISSION BUSY OR FREQUENT SHIFTING UP OR DOWN, AND DIAGNOSTIC TROUBLE CODES P057B, P057C, AND/OR P057D MAY OR MAY NOT BE SET. TECHNICIAN WILL USE THIS PRELIMINARY INFORMATION TO FIND THE BRAKE PEDAL POSITION DATA PARAMETERS IN THE SCAN TOOL, AND ALSO TO PROVIDE SOME ADDITIONAL DIAGNOSTIC HELP. THESE ISSUES MAY BE CAUSED BY AN INCORRECT BRAKE PEDAL POSITION SENSOR INPUT TO THE ENGINE CONTROL MODULE. TECHNICIAN WILL VERIFY WITH THE SCAN TOOL IF THE ENGINE CONTROL MODULE HAS THE CORRECT PARAMETERS FOR THE BRAKE PEDAL POSITION SENSOR. IF AN ENGINE CONTROL MODULE BRAKE PEDAL POSITION SENSOR RELEARN IS PERFORMED, THE TRUCK MAY BE TEMPORARILY REPAIRED UNTIL THE INTERMITTENT WIRING ISSUE BETWEEN THE ENGINE CONTROL MODULE AND BRAKE PEDAL POSITION SENSOR OCCURS AGAIN. ON 2014 AND NEWER TRUCKS INSPECT AND REPAIR ANY DAMAGE TO X115 AND X119. ON THE 2014 AND PREVIOUS TRUCKS INSPECT AND REPAIR ANY DAMAGE TO X205. |
| PIP5282A | 2017-05-18. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ABOUT THE CALCULATION AND OPERATION OF THE ENGINE OIL LIFE MONITOR. THE MONITOR CALCULATES THE PERCENT OF OIL LIFE REMAINING, BASED ON 3 PATHWAYS. THE FIRST PATHWAY FOR OIL LIFE CALCULATION IS ENGINE REVOLUTIONS. THE SECOND PATHWAY FOR OIL LIFE CALCULATION IS THE MILEAGE FORM THE LAST REST FOR ALL GENERAL MOTORS POWERTRAINS EXCEPT THE VOLT. THE THIRD PATHWAY FOR OIL LIFE CALCULATION IS THE AMOUNT OF TIME THE OIL IS IN THE ENGINE. THE VOLT USES A 2 YEAR TIMER INSTEAD OF 1 YEAR. IT ALSO USES THE ENGINE REVOLUTION COUNTER. IT DOES NOT USE THE MILEAGE PATHWAY TO COUNT DOWN. |
| PIP5029G | 2017-05-16. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT HAVE A MALFUNCTION INDICATOR LAMP ON OR ENGINE MISFIRE, ROUGH IDLE, EXTENDED CRANK, OR CRANK NO START IN SOME CASES. TECHNICIAN WILL NEED TO PERFORM PUBLISHED SERVICE INFORMATION DIAGNOSTICS. IF TECHNICIAN FINDS CARBON, AN UPPER ENGINE AND VALVE CLEANING SHOULD BE PERFORMED. |
| PIP-5258 | 2017-04-11. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE SERVICE ENGINE SOON AND A DIAGNOSTIC TROUBLE CODE P0011. IF THE TECHNICIAN HAS FOLLOWED SERVICE INFORMATION DIAGNOSTIC TROUBLE CODE FOR P0011AND THE ROOT CAUSE WAS NOT FOUND THE OIL PRESSURE AT THE OIL PRESSURE SENDER SHOULD BE CHECKED. ALSO THE NUMBER 2 CAM BEARING SHOULD BE INSPECTED. |
| PIP4568R | 2017-03-14. 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. |
| PIE0368 | 2017-03-13. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. THIS ENGINEERING INFORMATIONAL BULLETIN IS REQUESTING INFORMATION FROM THE FIELD WITH THE CONDITONS OF VEHICLE OVERHEATING, NOISE ORIGINATING FROM THE ENGINE COOLANT FANS OR POOR ENGINE COOLANT FAN PERFORMANCE. |
| PIP4786C | 2016-10-20. 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. |
| PI1394A | 2016-10-19. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES ADDITIONAL INFORMATION ON HOW TO INSTALL PISTONS AND SUGGEST WHAT TOOLS TO USE. |
| 030604017I | 2016-10-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. THIS INFORMATIONAL BULLETIN EXPLAINS THE USE OF DIESEL FUEL ADDITIVES IN AN ENGINE, ARE NOT REQUIRED UNLESS THE CUSTOMER DESIRES ADDITIVES TO PREVENT FUEL CONCERNS DEPENDING ON FUEL OR TEMPERATURE RELATED CONDITIONS. |
| 030603004R | 2016-10-18. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION ON HOW TO TEST A BATTERY AND WHAT IS NEEDED TO WARRANTY A BATTERY. |
| 000601026I | 2016-10-18. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETINS PROVIDES INFORMATION ON THE INTAKE MANIFOLD INSPECTION/REPLACEMENT AFTER SERVERE INTERNAL ENGINE DAMAGE. |
| 000601012F | 2016-10-18. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION TO GM DEALERS ON THE CORRECT CLEANING METHODS WHEN CLEANING ENGINE GASKET SEALING SURFACES. |
| 16NA249 | 2016-10-14. Service bulletin. ENGINE AND ENGINE COOLING. THIS INFORMATIONAL BULLETIN EXPLAINS A POSSIBLE NORMAL WHINING NOISE FROM THE BALANCE SHAFT CHAIN IF THE VEHICLE HAS LESS THAN 10,000 MILES ON IT. |
| PIT4614B | 2016-09-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE. "THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES STEPS THE TECHNICIAN WILL TAKE TO REPAIR A NO CRANK/NO START CONCERN WITH A DIAGNOSTIC TROUBLE CODE OF B009F IN THE SERIAL DATA GATEWAY MODULE EQUIPPED WITH REGULAR PRODUCTION OPTION CODE HP2. THE VEHICLE MAY EXHIBIT A NO CRANK OR NO START, OR A SERVICE HYBRID MESSAGE WITH NO CODES. THE TECHNICIAN WILL INSPECT THE HIGH VOLTAGE CIRCUIT IMPACT DETECTION SENSOR FOR WATER INTRUSION OR CORROSION AT THE WEATHER PACK. INSPECT THE HIGH VOLTAGE CIRCUIT IMPACT DETECTION SENSOR FOR CRACKS OR TERMINAL CORROSION AND REPLACE THE SENSOR OR TERMINALS ALONG WITH THE WEATHER PACK SEALS IF DAMAGE IS FOUND. IF THERE IS NO DAMAGE FOUND THE TECHNICIAN WILL LEAVE THE SENSOR UNPLUGGED AND POWER UP THE VEHICLE TO INDUCE A CODE, THEN POWER DOWN THE VEHICLE WITH THE TECH 2 UNPLUGGED FROM THE VEHICLE FOR TWO MINUTES. CLEAR THE CODE AND RECHECK FOR THE MESSAGE AND CODES, IF THE CODE RESETS THE TECHNICIAN WILL REPLACE THE HIGH VOLTAGE CIRCUIT IMPACT DETECTION SENSOR AND TERMINALS WITH TERMINATED LEADS. TECHNICIAN IS TO REPEAT THE ABOVE STEPS TO VERIFY THE CONCERN IS CORRECTED. " |
| G-209669 | 2016-09-08. Service bulletin. ENGINE. 14390 - SPECIAL COVERAGE. ON SOME 2012-2014 MODEL YEAR CHEVROLET TAHOE VEHICLES EQUIPPED WITH RPO PPV OR 5W4, UNDER CERTAIN OPERATING CONDITIONS, SOME POLICE PACKAGE VEHICLES HAVE EXPERIENCED INFREQUENT ENGINE-IDLE PROBLEMS AND MOMENTARY POOR LOW-SPEED ENGINE PERFORMANCE. THESE PERFORMANCE ISSUES CAN BE TRIGGERED IF BOTH OF THE FOLLOWING CONDITIONS ARE SATISFIED: (I) THE VEHICLE IS OPERATED IN AMBIENT TEMPERATURES THAT EITHER EXCEED 100 DEGREES FAHRENHEIT IN A LOW-HUMIDITY ENVIRONMENT OR THAT EXCEED 85 DEGREES FAHRENHEIT IN A HIGH-HUMIDITY ENVIRONMENT; AND (II) THE VEHICLE IS OPERATED AT IDLE FOR A LONG PERIOD OF TIME, AT IDLE AFTER HEAVY POWERTRAIN USAGE, OR WITH A HEAVY ELECTRICAL LOAD. THE CONDITION CAUSES ENGINE-IDLE RPM FLUCTUATIONS (450-1000 RPM) AND HESITATION DURING ACCELERATION. WHILE GM HAS RECEIVED SOME FIELD REPORTS OF ENGINE STALLS AT IDLE, GM HAS NOT BEEN ABLE TO CONFIRM THESE REPORTS. GM HAS ONLY BEEN ABLE TO DUPLICATE A SIMILAR STALL BY OPERATING A TEST VEHICLE AT A TEMPERATURE THAT IS AT THE LIMIT OF THE FUEL’S HIGH-TEMPERATURE SPECIFICATION. IF SUCH A STALL DID OCCUR, THE STALL WOULD BE AT IDLE OR LOW SPEED, AND ALL ELECTRICAL AND SAFETY SYSTEMS WOULD CONTINUE TO FUNCTION AS DESIGNED. IF THE CONDITION OCCURS WITHIN THE SPECIAL COVERAGE TERMS, DEALERS ARE TO UPDATE THE ENGINE CONTROL MODULE (ECM) AND BODY CONTROL MODULE CALIBRATIONS. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.