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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

Bulletins, newest first
12-08-132-001B2018-05-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin explains if the fuse is open when the customer plugs in the trailer, that it may be the cause if diagnostics finds no problems to that point.
PI12352018-05-21. Service bulletin. ELECTRICAL SYSTEM. This preliminary bulletin provides information to the technician, to check for loose grounds and the correct labor op to use
03-06-03-004K2018-05-21. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty bulletin explains how to use the EL-50313 Midtronic GR8 Battery tester to test a battery and determin if it is warranty or not
PI0938A2018-05-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. This preliminary bulletin provides information on what labor operation number to use for various electrical/electronic control issues.
10-08-46-001B2018-05-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Technical bulletin provides a procedure to request a hard mute from Onstar when navigation is annoucing directions and to correct the customers concern of the radio being loud during navigation.
08-08-44-029D2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT; ELECTRICAL SYSTEM. This Informational bulletin explains the warranty and policy exchange program for electronic devices and products, what can be approved by TAC and where the electronic parts can be returned to.
PIT5119E (1)2018-05-21. Service bulletin. ELECTRICAL SYSTEM:IGNITION. This Preliminary Information communication provides information to the technician about vehicles that the keyless entry is inoperative. Technician should inspect the ignition key cylinder door sticks in the up position. If the door is found open do not replace the ignition key cylinder, use a Lubriplate type of lubrication spray and lubricate the ignition key cylinder door. Insert the tip of the key in and out to verify the door of the cylinder is not sticking.
PIT5119E2018-05-21. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE; ELECTRICAL SYSTEM:IGNITION. This Preliminary Information communication provides information to the technician about vehicles that the keyless entry is inoperative. Technician should inspect the ignition key cylinder door sticks in the up position. If the door is found open do not replace the ignition key cylinder, use a Lubriplate type of lubrication spray and lubricate the ignition key cylinder door. Insert the tip of the key in and out to verify the door of the cylinder is not sticking.
1208132001E2018-05-21. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin explains to the dealer how to cover a possible customers mistake when a fuse has been blown.
08-08-44-015C2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This informational bulletin provides information regarding the inappropriate warranty claims submitted for damaged radios and instrument panel clusters, provides exampls on whats an acceptable for warranty and whats not
17NA2152018-05-21. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to properly reprogram an onstar module to correct a condition of Red LED, No WiFi Operation, and/or Limited OnStar® Module Functionality After OnStar Module Replacement for Another Condition.
090604026N2018-05-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2 9U.S. and Canada
030603004W2018-05-21. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
10-00-89-005E2018-05-21. Service bulletin. ELECTRICAL SYSTEM:WIRING. This warranty administration bulletin adds the 2016 model year to a communication which provides dealership personnel revised wiring repair labor operations and required additional information.
05-08-46-009D2018-05-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin adds the 2014 and 2015 model years to information of a language change for OnStar System (U.S. and Canada only).
13-00-89-008A2018-05-07. Service bulletin. ELECTRICAL SYSTEM:WIRING. This informational bulletin communicates GM wiring repair strategy information.
PIT5264A2018-05-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician about vehicles that are travelling from Canada to the United States. While in the United States they are unable to receive Turn-by-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn-By-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Second if the customer uses the OnStar RemoteLink app they can send the directions to the vehicle. The third option would be to have the vehicle loaded with a ?500 phone number? The customer will no longer be able to use their Hands Free Calling minutes when the new 500 phone number is loaded. If a customer chooses to restore Hands Free Calling in the future a new phone number will be assigned to the vehicle; previous phone numbers are not available.
030603004S2018-05-07. Service bulletin. ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
PI12282018-05-07. Service bulletin. ELECTRICAL SYSTEM. This preliminary bulletin provides a procedure to clear all the codes from the BECM and not replace it until confirmed, and the customers concern of the Service Charging System message has been cleared.
PI0924B2018-05-07. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK. This preliminary bulletin provides a procedure to install a new relay to control the trunk opening up when the button has been accidently pressed.
14-06-130-0012018-05-07. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This informational bulletin provides information on how to disable high voltage safely.
13-00-89-0032018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides information on Vehicle Software Enhancements for 2014 and prior GM Passenger Cars and Light Duty Trucks.
12-08-132-001A2018-04-23. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information accessory power outlet and trailer lighting fuse replacement due to electrical systems that can be affected by devices that are plugged in by the customer.
PI09382018-04-23. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This preliminary information bulletin provides information on powertrain and various electronic/electrical control issues.
13-08-116-001A2018-04-23. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS; POWER TRAIN; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This technical bulletin provides a procedure on aftermarket ALSL or DLC devices causing multiple issues due to suspected tampering.

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