2015 Buick LaCrosse service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical coverage with wiring diagrams
- Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more
Trims covered
- Premium Sedan 4-Door
- Base Sedan 4-Door
- Leather Sedan 4-Door
Engines covered
- 3.6L 3564CC 217Cu. In. V6 FLEX DOHC Naturally Aspirated
- 2.4L 2384CC 145Cu. In. l4 MILD HYBRID EV-GAS (MHEV) DOHC Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
General Motors LLC (GM) is recalling certain model year 2015 Buick LaCrosse, Cadillac XTS, Chevrolet Camaro, Equinox, Malibu, and GMC Terrain vehicles. The affected vehicles have front seat-mounted s
In the event of a crash necessitating deployment of one or both of the side impact air bags, the air
GM will notify owners, and dealers will replace the side impact air bag modules, free of charge. The
General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and
A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessi
GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous
General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and
A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessi
GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous
This document provides the technician with a diagnostic tip if the vehicle stalls and set diagnostic trouble code P0191 and may also set P0172. The diagnostic tip has the technician inspect the high pressure fuel pump body markings to confi
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This service bulletin provides information on Tire Sidewall Irregularities.
This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customers vehicles that exhibit vibration conditions without utilizing the s
Showing the 8 most recent of 683 technical service bulletins on file with NHTSA.
TL* THE CONTACT OWNED A 2015 BUICK LACROSSE. WHILE DRIVING AT AN UNKNOWN SPEED, ANOTHER VEHICLE CRASHED HEAD ON INTO THE CONTACT'S VEHICLE. THE AIR BAGS DID NOT DEPLOY. BOTH DRIVERS SUSTAINED MAJOR IN
The contact owns a 2015 Buick Lacrosse. The contact stated while driving at 55 MPH, another vehicle spun uncontrollably and crashed into the driver's side door of the vehicle and the door caved in. Th
The contact owned a 2015 Buick Lacrosse. The contact stated while making a right turn and attempted to depress the brake pedal but failed to stop. The contact stated no warning light was illuminated.
TL* THE CONTACT OWNS A 2015 BUICK LACROSSE. WHILE DRIVING APPROXIMATELY 35-40 MPH, A DEER STRUCK THE FRONT DRIVER'S SIDE OF THE CONTACT'S VEHICLE. THE DRIVER'S SIDE STEERING WHEEL AIR BAG DEPLOYED, BU
TL* THE CONTACT OWNS A 2015 BUICK LACROSSE. WHILE ATTEMPTING TO PARK, THE VEHICLE INDEPENDENTLY SURGED FORWARD, WENT OVER A RAILROAD CROSS TIE, AND CRASHED INTO A TREE. A POLICE REPORT WAS NOT FILED.
Showing the 5 most serious of 54 complaints filed with NHTSA.
