This Buick LaCrosse wiring diagram manual package provides complete electrical circuit schematics for the uploaded 2015, 2016, 2018 and 2019 LaCrosse models.
It is designed for professional diagnostics, electrical troubleshooting, wiring repair, connector tracing, module testing, retrofit planning and workshop reference.
The package includes earlier 2015–2016 LaCrosse coverage and later 2018–2019 LaCrosse coverage, with diagrams for ECM engine control, BCM body control, ABS, GMLAN communication, HVAC, power distribution, grounds, lighting, infotainment, restraints, transmission and hybrid/EV-related circuits where included. The uploaded 2015 file includes 2.4L VIN R hybrid system circuits, while the 2018 and 2019 files include 2.5L VIN Z hybrid system circuits.
Vehicle Coverage
- Buick LaCrosse 2015 Base
- Engine: 2.4L
- Pages: 133
- Buick LaCrosse 2016 Premium
- Engine: 3.6L
- Pages: 133
- Buick LaCrosse 2018 Premium
- Engine: 2.5L
- Pages: 169
- Buick LaCrosse 2019 Premium
- Engine: 2.5L
- Pages: 160
- Total package size:
- 595 pages
Technical Highlights
- Complete 2.4L, 2.5L and 3.6L engine wiring coverage
- ECM / Engine Control Module circuits
- BCM / Body Control Module wiring
- ABS and Electronic Brake Control Module circuits
- GMLAN computer data line diagrams
- Hybrid/EV battery and powertrain circuits where included
- Power distribution and fuse block wiring
- Ground distribution circuits
- HVAC, automatic A/C, blower motor and air quality sensor wiring
- Cooling fan and A/C compressor circuits
- Exterior lights, headlamps, backup lamps and horn circuits
- Interior lights, courtesy lamps and instrument illumination wiring
- Navigation, radio, amplifier, camera and driver assistance circuits
- Memory seats, power seats, lumbar and heated seat wiring
- Power door locks, power windows, mirrors and sunroof circuits
- Starting, charging, shift interlock and automatic transmission wiring
- Supplemental restraints, warning systems and wiper/washer circuits
Table of Content
- Air Conditioning
- Automatic A/C circuit
- HVAC control module wiring
- A/C compressor clutch and solenoid valve
- Windshield temperature and inside moisture sensor
- Air quality sensor
- Ambient light / sunload sensor
- Blower motor and HVAC controls
- A/C refrigerant pressure sensor
- Air temperature sensors and door actuators
- Air recirculation and air inlet door actuator circuits
- Anti-Lock Brakes
- Anti-lock brakes circuit
- Electronic Brake Control Module wiring
- Brake pressure modulator
- Brake fluid level switch
- Wheel speed sensor circuits
- Parking brake control switch
- Brake booster vacuum sensor
- Brake pedal position sensor
- Anti-Theft
- Forced entry circuit with passive keyless entry
- Forced entry circuit without passive keyless entry
- Pass-Key circuit
- Keyless entry antennas
- Door handle assemblies
- Door latch assemblies
- Ignition mode switch
- Hood ajar switch and theft-deterrent wiring
- Body Control Modules
- Body Control Module circuit
- BCM power, ground and signal wiring
- Door locks, lighting, windows, HVAC and anti-theft links
- Horn, cruise control, wiper/washer and instrument cluster links
- Body module communication with data line systems
- Computer Data Lines
- Computer data lines circuit
- Low speed GMLAN serial data
- High speed GMLAN serial data
- MOST serial data circuits
- Data link connector wiring
- Module communication and network circuits
- Cooling Fan
- Cooling fan circuit
- Hybrid cooling fan circuit
- Left and right cooling fan motor wiring
- Cooling fan relay and speed control circuits
- Radiator coolant temperature sensor circuits
- Cruise Control
- Cruise control circuit
- Steering wheel control wiring
- ECM / BCM cruise control links
- Defoggers
- Defoggers circuit
- Rear defogger switch
- Rear defogger indicator
- Rear window defogger relay control
- Electronic Power Steering
- Electronic power steering circuit
- Belt drive power steering circuit
- Variable effort steering circuit
- Power tilt steering column circuit
- Electronic Suspension
- Electronic suspension circuit
- Chassis and suspension control wiring
- Engine Performance
- 2.4L VIN R engine controls circuit
- 2.4L VIN R hybrid system circuit
- 2.5L VIN Z engine controls circuit
- 2.5L VIN Z hybrid system circuit
- 3.6L VIN 3 engine performance circuit
- 3.6L VIN S engine performance circuit
- ECM power, grounds, sensor and actuator wiring
- Fuel, ignition, A/C pressure and coolant temperature sensor circuits
- Hybrid/EV powertrain control module circuits
- Starter/generator and hybrid battery control circuits
- Exterior Lights
- Backup lamps circuit
- Exterior lamps circuit
- Front and rear exterior lighting wiring
- Lamp switch and body control lighting circuits
- Ground Distribution
- Ground distribution circuits
- Engine ground points
- Chassis ground points
- Body, HVAC, lighting, infotainment and module ground circuits
- Headlights
- Headlamps circuit with high intensity discharge
- Headlamps circuit without high intensity discharge
- Headlamps leveling circuit
- Headlamp assembly and control wiring
- Horn
- Horn circuit
- Horn switch signal and BCM horn control wiring
- Instrument Cluster
- Collision avoidance circuit
- Head-up display circuit
- Instrument cluster circuit
- Driver information center display
- Coolant temperature indicator and warning links
- Interior Lights
- Courtesy lamps circuit
- Instrument illumination circuit
- Interior lighting and dimming control wiring
- Memory Systems
- Memory mirrors circuit
- Memory seat circuit
- Memory power tilt and telescopic steering circuit
- Navigation / Camera / Driver Assistance
- Blind spot monitoring circuit
- Lane departure warning circuit
- Navigation circuit with amplifier
- Navigation circuit without amplifier
- Camera and infotainment-related wiring where included
- Power Distribution
- Power distribution circuits
- Underhood fuse block wiring
- Battery fuse block wiring
- Instrument panel fuse block wiring
- Relay, fuse and module power supply circuits
- Power Door Locks
- Power door locks circuit
- Door lock actuator wiring
- Door latch and lock switch wiring
- BCM-controlled lock circuits
- Power Mirrors
- Power mirrors circuit
- Electrochromic mirror circuit
- Memory mirror wiring where included
- Power Seats
- Driver power seat circuit
- Passenger power seat circuit
- Memory seat circuit
- Seat lumbar support
- Seat massage switch
- Heated seat and seat heater control module wiring
- Power Top / Sunroof
- Power top / sunroof circuit
- Sunroof motor wiring
- Power Windows
- Power windows circuit
- Driver and passenger window motor wiring
- Window switch and BCM control wiring
- Radio / Audio
- Radio circuit
- Radio antenna amplifier wiring
- Audio amplifier wiring
- Navigation radio wiring
- MOST serial data audio communication circuits
- Shift Interlock
- Shift interlock circuit
- Ignition lock and park lock related wiring
- Starting / Charging
- Starting circuit
- Charging circuit
- Starter/generator wiring
- Generator and battery control circuits
- Supplemental Restraints
- Supplemental restraints circuit
- Inflatable restraint sensing and diagnostic module
- Airbag, impact sensor and restraint wiring
- Transmission
- Automatic transmission circuit
- Transmission control module wiring
- Transmission power, ground and signal circuits
- Warning Systems
- Warning systems circuit
- Door ajar, brake fluid level and cluster warning circuits
- Wiper / Washer
- Wiper/washer circuit
- Windshield wiper motor assembly
- Washer pump and switch wiring
Reviews
Clear filtersThere are no reviews yet.