Service bulletins for the 2012 Buick LaCrosse
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.
1830 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Electrical system are shown. Show all
| PIC5491F | 2017-08-15. 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. |
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| PIC5520K | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician that the Drive Motor Generator Battery Module and Drive Motor Generator Battery Sections for the 2012 - 2014 Buick LaCrosse, Buick Regal, 2013 - 2014 Chevrolet Malibu ECO and 2014 Chevrolet Impala with eAssist 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. |
| PIC5492E | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D-37 history in the Vehicle Communication Interface Module or telematics communication interface control module. Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation. |
| 10-00-89-005F | 2017-07-18. Service bulletin. ELECTRICAL SYSTEM:WIRING. This informational bulletin provides warranty policy information on revised wiring repair labor operations and required additional information. |
| PIC5491J | 2017-05-02. 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. |
| PIC5491J | 2017-04-10. 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. |
| PIC5720B | 2017-03-17. Service bulletin. ELECTRICAL SYSTEM:WIRING; SERVICE BRAKES, AIR:ANTILOCK. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS NEEDED TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE BUZZ OR HUM NOISE IS HEARD IN THE RIGHT FRONT AT TIMES. ALSO MAY HAVE A ANTILOCK BRAKING SYSTEM MALFUNCTION INDICATOR LAMP, SERVICE BRAKE ASSIST MESSAGE OR SERVICE ENGINE SOON MALFUNCTION INDICATOR LAMP MAY BE DISPLAYED. THE FOLLOWING DIAGNOSTIC TROUBLE CODE MAY BE SET C027B, C0040 AND P0CBE. THE TECHNICIAN WILL INSPECT FOR THE WIRE HARNESS UNDER THE HOOD TO BE CONTACTING THE CRANK PULLEY, AIR CONDITIONING COMPRESSOR PULLEY OR ACCESSORY DRIVE BELT DUE TO MISROUTING OR NOT SECURED PROPERLY. REPAIR WIRING AS NEEDED OR REPLACE THE HARNESS, CORRECT ROUTING AND PROPERLY SECURE. ONCE WIRING REPAIRS ARE COMPLETE CONFIRM PROPER BRAKE BOOSTER VACUUM PUMP OPERATION. |
| PIC5520S | 2017-03-17. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN EASSIST DRIVE MOTOR GENERATOR BATTERY ARE NO LONGER ON PART RESTRICTION. TO ORDER THE EASSIST DRIVE MOTOR GENERATOR BATTERY SECTION CONTACT THE BATTERY SERVICE CENTER IN THE UNITED STATES OR THE ELECTRONIC SERVICE CENTER IN CANADA. |
| PIP4993B | 2017-03-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE A SERVICE CHARGING SYSTEM, BATTERY SAVER MESSAGE OR MALFUNCTION INDICATOR LAMP ON, AND/OR CHARGING SYSTEM INOPERATIVE. TECHNICIAN WILL USE GLOBAL DIAGNOSTIC SYSTEM 2 AND CLEAR THE DIAGNOSTIC TROUBLE CODES IN THE HYBRID POWERTRAIN CONTROL MODULE AND THE BATTERY ENERGY CONTROL MODULE. THEN TURN THE IGNITION OFF FOR A MINIMUM OF 2 MINUTES TO ALLOW THE HIGH SPEED LOCAL AREA NETWORK AND POWERTRAIN EXPANSION BUS TO POWER DOWN. START THE CAR AND MONITOR THE CHARGING SYSTEM VOLTAGE. IF THE CHARGING SYSTEM IS STILL INOPERATIVE THERE MAY BE A LOGIC LOCK CONDITION. DISCONNECT THE 12V BATTERY AND PERFORM A GLOBAL CAPACITIVE DISCHARGE AND REPEAT STEPS AGAIN. |
| PIC4310K | 2017-03-14. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLE THAT MAY HAVE AN ONSTAR SYSTEM THAT HAS PROGRESSION TONES WHEN PRESSING THE BLUE OR RED BUTTON. TECHNICIAN WILL NEED TO CALL GENERAL MOTORS TECHNICAL ASSISTANCE CENTER WITH THE SCAN TOOL DATA FROM THE ONSTAR SYSTEM. |
| 12238A | 2017-01-26. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 12238A - SERVICE UPDATE (REVISED SERVICE PROCEDURE). THE GENERATOR CONTROL MODULE (GCM) MAY NOT FUNCTION PROPERLY, RESULTING IN THE GRADUAL LOSS OF BATTERY CHARGE, ILLUMINATION OF THE MIL, AND EVENTUAL ENGINE STALL OR NO START CONDITION. DEALERS ARE TO INSPECT AND REPLACE THE GCM, IF NECESSARY. |
| 12238 | 2017-01-26. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 12238 - SERVICE UPDATE. THE GENERATOR CONTROL MODULE (GCM) MAY NOT FUNCTION PROPERLY, RESULTING IN THE GRADUAL LOSS OF BATTERY CHARGE, ILLUMINATION OF THE MIL, AND EVENTUAL ENGINE STALL OR NO START CONDITION. DEALERS ARE TO INSPECT AND REPLACE THE GCM, IF NECESSARY. |
| 120089008 | 2016-11-29. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION ON THE SERVICEABILITY OF HIGH VOLTAGE VOLT BATTERIES AND THE ESSENTIAL TOOLS USED TO SERVICE THEM |
| PI0835 | 2016-11-29. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A PROCEDURE ON HOW TO REPLACE A KEY WITH AN INTERGRATED TRANSMITTER ON IT FOR CONDITIONS RELATED TO KEYS WITH INTERGRATED TRANSMITTERS INOPPERATIVE DUE TO PERMATURE DRAIN OF TRANSMITTER BATTERY. |
| PI0086D | 2016-11-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A LIST OF CORRECTIONS FOR MULTIPLE CONCERNS REGARDING UNEXPECTED LOSS OF RADIO AUDIO (RADIO GOES SILENT/NO SOUND) AND OTHER BLACKBERRY PHONE - BLUETOOTH ISSUES |
| PIT5485A | 2016-11-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN, IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE. |
| PIT5485B | 2016-11-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE, TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE. |
| PIP5168E | 2016-11-01. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE THE CONCERN, AND THE STEPS TO REPAIR THE CONCERN OF THE VEHICLE CRANKS BUT DOES NOT START. THE TECHNICIAN IS TO INSPECT FOR A SHEARED CAM PIN IN THE ENGINE. |
| PIC4935E | 2016-10-25. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE. WHEN PERFORMING BATTERY PARASITIC DRAIN TEST, THERE MAY BE SOME CONFUSION AS TO WHAT THE NORMAL POWER CONSUMPTION READING SHOULD BE FROM THE ONSTAR SYSTEM. |
| PIT5074J | 2016-10-21. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT THE USE OF J-35616-64B TERMINAL TEST PROBE, REPLACEMENT TERMINALS, AND TERMINATED LEADS. THE J-35616-64B IS THE LATEST TEST PROBE RELEASED FOR CHECKING TENSION OR PROBING THE .64 SERIES TERMINALS. THE TEST PROBE TERMINAL HAS BEEN RELEASED IN THE TERMINAL REPAIR KIT (J-38125-620H) LOCATED IN LEAR TRAY 7 PART NUMBER 963716-2. THERE ARE 5 TERMINATED LEADS IN A PACKAGE PART NUMBER IS 13505346, WHICH CAN BE ORDERED THROUGH YOUR NORMAL GENERAL MOTORS CUSTOMER CARE AND AFTERSALES PARTS CHANNEL |
| 110849001S | 2016-10-19. Service bulletin. ELECTRICAL SYSTEM. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REMOVE THE TRANSPORT MODE ON MESSAGE DISPLAYED IN THE DIC DUE TO VEHICLES SHIPPED OVER LONG DISTANCES OUTSIDE THE U.S. AND CANADA. |
| 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. |
| 16NA241 | 2016-10-14. Service bulletin. ELECTRICAL SYSTEM. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO CHECK THE CYLINDERS FOR DAMAGED PISTONS AND DETERMINE IF THE USE OF AFTERMARKET CALIBRATIONS OR PERFORMANCE PARTS MAY BE THE CAUSE. |
| PIP5094A | 2016-09-26. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT ,WHEN TESTING ANY CIRCUIT FOR OPEN OR RESISTANCE, IT IS IMPERATIVE THAT ALL RELATED TERMINAL PIN FIT AND TENSION BE CHECKED WHEN THE TEST STEPS REQUIRE DISCONNECTION OF THE CONNECTOR OR COMPONENT, PRIOR TO ANY COMPONENT REPLACEMENT. ALWAYS USE THE RECOMMENDED TERMINAL TEST TOOL DURING THESE TESTS. |
| PIC5520U | 2016-09-21. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN EASSIST DRIVE MOTOR GENERATOR BATTERY MODULE PARTS RESTRICTION HAS ENDED. TO ORDER THE EASSIST DRIVE MOTOR GENERATOR BATTERY SECTION DEALER WILL NEED TO CALL THE BATTERY SERVICE CENTER. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.