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Service bulletins for the 2014 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.

1811 on file from NHTSA, as of 2026-10-19.

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By component

By trouble code

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Bulletins, newest first
PIP5257E2021-06-14. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses. Also updated to include ALL HFV6 engines Gen1 and Gen2.
070089036J2021-06-07. Service bulletin. EQUIPMENT. This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
050308002I2021-06-07. Service bulletin. SUSPENSION. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
020089002T2021-06-07. Service bulletin. EQUIPMENT. This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
000601026N2021-06-07. Service bulletin. ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
21NA1032021-05-24. Service bulletin. EQUIPMENT. This service bulletin provides information regarding Witness Marks from Panel Adjustments Made During Manufacturing and that it is considered a normal condition.
18NA1462021-05-24. Service bulletin. EQUIPMENT. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
16NA3382021-05-24. Service bulletin. POWER TRAIN. This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
PIP5640A2021-05-17. Service bulletin. WHEELS. This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.
110089005Q2021-05-03. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
1008110001I2021-05-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides information on proper use of floor mats.
21NA0432021-05-03. Service bulletin. EQUIPMENT. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.
20NA1382021-05-03. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
18NA3582021-05-03. Service bulletin. STRUCTURE. This technical bulletin provides a procedure to replace the upper and lower valve body housings to correct launch shudder, 2-3 Upshift or 3-2 Downshift concerns.
18NA3062021-05-03. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
18NA0992021-05-03. Service bulletin. EQUIPMENT. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
16NA1092021-05-03. Service bulletin. STEERING. This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
PI1159A2021-04-29. Service bulletin. EQUIPMENT:ELECTRICAL:AUX AUDIO JACK/PLUG; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT. No XM Audio, Rear View Camera Issues, Favorite Stations Stored Twice and/or Disappear Condition/Concern • No audio on startup in XM. • iPhone does not detect if user disconnects iPhone during certification process. • When receiving an incoming call through OnStar Hands Free Calling system, the vehicle does not ring. It will show on the screen. • FM Timeshift not functioning properly. • HD Switching Toggle Setting does not function. • Favorites stored Twice or disappear. • Noise is played during the TimeShift recoding. • A/C Mode icon is displayed when vehicle is not equipped with A/C. • The folder track is not played when the folder is pressed for a long time. • Missing Forward Collision Warning Chime on vehicles base audio system, Forward Collision Alert and/or Adaptive Cruise. • Long press of the knob when highlighting a browse folder, sometime changes the media source from SD card to USB and when user releases the push knob, it brings the Media Menu back instead of showing the now playing screen for USB and SD card. • The USB only works with Apple products (iPhone). • Rear View Camera Issues: • When shifting from Drive to Reverse is less than 3 seconds, the display will not transition to the rear view camera screen. • When shifting from Drive to Reverse is more than 3 seconds, the display may be blank and will not show the rear view camera message “Check Surrounding for Safety.”
PIE02792021-04-29. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY. Engineering Information – Sunroof or Sunshade Inoperative, DTC U151B Set Condition Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this EI. Some customers may comment that the sunroof or shade is inoperative when the sunroof switch is pressed. When checking the vehicle for DTCs, the BCM may report U151B current or in history. Cause GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to gather information on vehicles PRIOR to repair that may exhibit this condition. As a result, this information will be used to "root cause" the customer's concern and develop/validate a field fix.
PI11592021-04-29. Service bulletin. ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:AUX AUDIO JACK/PLUG; EQUIPMENT:APPLIANCE:AIR CONDITIONER. No XM Audio, Rear View Camera Issues, Favorite Stations Stored Twice and/or Disappear Condition/Concern • No audio on startup in XM. • iPhone does not detect if user disconnects iPhone during certification process. • When receiving an incoming call through OnStar Hands Free Calling system, the vehicle does not ring. It will show on the screen. • FM Timeshift not functioning properly. • HD Switching Toggle Setting does not function. • Favorites stored Twice or disappear. • Noise is played during the TimeShift recoding. • A/C Mode icon is displayed when vehicle is not equipped with A/C. • The folder track is not played when the folder is pressed for a long time. • Missing Forward Collision Warning Chime on vehicles base audio system, Forward Collision Alert and/or Adaptive Cruise. • Long press of the knob when highlighting a browse folder, sometime changes the media source from SD card to USB and when user releases the push knob, it brings the Media Menu back instead of showing the now playing screen for USB and SD card. • The USB only works with Apple products (iPhone). • Rear view camera issues.
PI10492021-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. 2014 Buick LaCrosse New Model Features The purpose of this bulletin is to help the Service and Sales Department personnel become familiar with the 2014 Buick LaCrosse new model features. The 2014 LaCrosse offers new interior and exterior designs, Buick’s QuietTuning engineering, advanced safety technologies and enhanced next generation invehicle connectivity. LaCrosse is available in four trim levels, including LaCrosse (1SB), Leather (1SL), Premium I (1SP) and Premium II (1SR). Exterior Design The 2014 LaCrosse introduces a more expressive interpretation of Buick’s flowing, sculpted styling design, with elements and cues that enhance the car’s well planted, wide stance.
PI0281D2021-04-26. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS. Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form of corrosion. This corrosion may be red in appearance (rust) if the component is steel, forged iron or cast iron. This corrosion may also be grey or white in color if the component is constructed of an aluminum alloy.
PI0281D2021-04-26. Service bulletin. STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS; EQUIPMENT ADAPTIVE/MOBILITY. Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form of corrosion. This corrosion may be red in appearance (rust) if the component is steel, forged iron or cast iron. This corrosion may also be grey or white in color if the component is constructed of an aluminum alloy.
99-08-51-007F2021-04-26. Service bulletin. EQUIPMENT; WHEELS; EQUIPMENT ADAPTIVE/MOBILITY. Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed. Evaluating Damage In evaluating damage, it is the GM Dealer's responsibility to inspect the wheel for corrosion, scrapes, gouges, etc. The Dealer must insure that such damage is not deeper than what can be sanded or polished off. The wheel must be inspected for cracks. If cracks are found, discard the wheel. Any wheels with bent rim flanges must not be repaired or refinished. Wheels that have been refinished by an outside company must be returned to the same vehicle. The Dealer must record the wheel ID stamp or the cast date on the wheel in order to assure this requirement. Refer to Refinisher's Responsibility — Outside Company later in this bulletin.
99-08-51-007F2021-04-26. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; WHEELS; EQUIPMENT. Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed. Evaluating Damage In evaluating damage, it is the GM Dealer's responsibility to inspect the wheel for corrosion, scrapes, gouges, etc. The Dealer must insure that such damage is not deeper than what can be sanded or polished off. The wheel must be inspected for cracks. If cracks are found, discard the wheel. Any wheels with bent rim flanges must not be repaired or refinished. Wheels that have been refinished by an outside company must be returned to the same vehicle. The Dealer must record the wheel ID stamp or the cast date on the wheel in order to assure this requirement. Refer to Refinisher's Responsibility — Outside Company later in this bulletin.

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