WenmarOpen by Wenmar Pro

Service bulletins for the 2011 Buick Regal

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.

1527 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
PIP4990C2017-03-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT SOME VEHICLES MAY HAVE A SERVICE ENGINE SOON THAT COMES ON. TECHNICIAN MAY FIND A DIAGNOSTIC TROUBLE CODE U0101 CURRENT OR STORED HISTORY. TECHNICIAN SO CHECK TERMINAL PIN FIT AT TRANSMISSION CONNECTOR, UNDER HOOD FUSE BLOCK. ALSO THE TRANSMISSION CONTROL MODULE GROUND WILL NEED TO BE INSPECTED. TECHNICIAN WILL REVIEW THE APPROPRIATE SERVICE INFORMATION DIAGNOSTICS FOR DTC U0101.
148822017-02-01. Service bulletin. ENGINE. 14882 - SPECIAL COVERAGE. CERTAIN VEHICLES EQUIPPED WITH A 2.4L ENGINE (LAF, LEA OR LUK) THAT HAVE EXPERIENCED HIGH OIL CONSUMPTION MAY ALSO EXPERIENCE A FROZEN AND/OR PLUGGED PCV (POSITIVE CRANKCASE VENTILATION) SYSTEM DURING COLD WEATHER OPERATION. THIS CONDITION MAY INCREASE CRANKCASE PRESSURE LEADING TO A REAR CRANKSHAFT SEAL OIL LEAK. IF THE OIL LEAK IS IGNORED OR NOT NOTICED, AN ENGINE CLATTER NOISE MAY BE NOTICEABLE AND/OR THE ENGINE PRESSURE WARNING LIGHT MAY ILLUMINATE. IF THIS CONDITION IS NOT CORRECTED, CONTINUED DRIVING WITH ENGINE NOISE AND/OR THE ENGINE OIL PRESSURE LIGHT ILLUMINATED MAY DAMAGE THE ENGINE. DEALERS ARE TO PERFORM A CRANKCASE PRESSURE CHECK, AND IF REQUIRED, REMOVE THE INTAKE MANIFOLD AND CLEAR THE PCV ORIFICE.
PI0202D2016-11-10. Service bulletin. ENGINE AND ENGINE COOLING. THIS PRELIMINARY INFORMATION PROVIDES A PROCEDURE TO REPLACE THE WATER PUMP AND BALANCE CHAIN FOR A CONDITION OF A RATTLE OR KNOCK TYPE NOISE FROM FRONT OF ENGINE AT IDLE
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.
030604017I2016-10-18. 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.
030603004R2016-10-18. 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.
000601026I2016-10-18. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETINS PROVIDES INFORMATION ON THE INTAKE MANIFOLD INSPECTION/REPLACEMENT AFTER SERVERE INTERNAL ENGINE DAMAGE.
000601012F2016-10-18. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION TO GM DEALERS ON THE CORRECT CLEANING METHODS WHEN CLEANING ENGINE GASKET SEALING SURFACES.
16NA2492016-10-14. 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.
PIP4548F2016-09-23. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN WHAT TO INSPECT IF CODES P0016 AND/OR P0017 ARE SETTING ON A PROPERLY TIMED ENGINE OR A CONDITION OF THE VEHICLE CRANKS BUT WILL NOT START. TECHNICIAN SHOULD INSPECT THE RESPECTIVE INTAKE OR EXHAUST CAMSHAFT RELUCTOR TO SEE IF IT HAS SPUN ON THE CAMSHAFT. THE RELUCTOR CANNOT BE REPOSITIONED SO THE CAMSHAFT MUST BE REPLACED. THE NEW CAMSHAFTS COME WITH THE RELUCTOR ALREADY PRESSED ON IN THE CORRECT POSITION.
SB-07-06-01-016C2016-08-09. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION INTERNAL ENGINE NOISE OR DAMAGE AFTER OIL FILTER REPLACEMENT
PIP5093B2016-07-07. Service bulletin. ENGINE. Some customers may complain of an engine oil leak that appeared as they were driving the vehicle in extremely cold ambient temperatures (Generally 0 F /-17 C or Colder). They may also comment that they heard a single "pop" noise right before the oil leak started. Upon inspection, the technician will find that the oil leak is coming from the rear main oil seal of the engine as shown below. This may be the result of a frozen PCV system and excessive crankcase pressure. If a leaking rear main oil seal is found in warmer climates, this PI does not apply.
PIC5669B2016-06-22. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI0562E2016-06-13. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI0558C2016-06-13. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI0202D2016-06-13. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI0562F2016-06-13. Service bulletin. ELECTRICAL SYSTEM; ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI0562F2016-06-13. Service bulletin. ELECTRICAL SYSTEM; ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIP52332016-06-13. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI11732016-06-09. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
12313B2016-06-09. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
12313A2016-06-09. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-12313B-A2016-03-16. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-12313-A2016-03-16. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. SUMMARY TO BE PROVIDED ON A FUTURE DATE.

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