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Wiring Diagrams Buick LaCrosse I (2004-2009)

40 systems 72 wiring diagrams 1332 components
Contents — 40 systems, 72 diagrams
Air conditioning 3.6l vin 7
Air conditioning 3.8l vin 2
Anti-lock brakes
Anti-theft
Body control modules
Computer data lines
Cooling fan 3.6l vin 7
Cooling fan 3.8l vin 2
Cruise control 3.6l vin 7
Cruise control 3.8l vin 2
Defoggers
Electronic power steering
Engine performance 3.6l vin 7
Engine performance 3.8l vin 2
Exterior lights
Exterior lights 3.6l vin 7
Exterior lights 3.8l vin 2
Ground distribution
Headlights
Horn
Instrument cluster
Interior lights
Navigation
Power distribution
Power door locks
Power mirrors
Power seats
Power top/sunroof
Power windows
Radio
Shift interlock
Shift interlock 3.6l vin 7
Shift interlock 3.8l vin 2
Starting/charging
Supplemental restraints
Transmission 3.6l vin 7
Transmission 3.8l vin 2
Trunk, tailgate, fuel door
Warning systems
Wiper/washer

Air conditioning 3.6l vin 7

# 3.6l vin 7, automatic a/c circuit

# 3.6l vin 7, automatic a/c circuit (1 of 2)

Air conditioning 3.6l vin 7 — 3.6l vin 7, automatic a/c circuit — 3.6l vin 7, automatic a/c circuit (1 of 2). Buick LaCrosse I (2004-2009)
Components on the diagram

    # 3.6l vin 7, automatic a/c circuit (2 of 2)

    Air conditioning 3.6l vin 7 — 3.6l vin 7, automatic a/c circuit — 3.6l vin 7, automatic a/c circuit (2 of 2). Buick LaCrosse I (2004-2009)
    Components on the diagram

      # 3.6l vin 7, compressor circuit

      Air conditioning 3.6l vin 7 — 3.6l vin 7, compressor circuit — 3.6l vin 7, compressor circuit. Buick LaCrosse I (2004-2009)
      Components on the diagram

        Air conditioning 3.8l vin 2

        # 3.8l vin 2, automatic a/c circuit

        # 3.8l vin 2, automatic a/c circuit (1 of 2)

        Air conditioning 3.8l vin 2 — 3.8l vin 2, automatic a/c circuit — 3.8l vin 2, automatic a/c circuit (1 of 2). Buick LaCrosse I (2004-2009)
        Components on the diagram

          # 3.8l vin 2, automatic a/c circuit (2 of 2)

          Air conditioning 3.8l vin 2 — 3.8l vin 2, automatic a/c circuit — 3.8l vin 2, automatic a/c circuit (2 of 2). Buick LaCrosse I (2004-2009)
          Components on the diagram

            # 3.8l vin 2, compressor circuit

            Air conditioning 3.8l vin 2 — 3.8l vin 2, compressor circuit — 3.8l vin 2, compressor circuit. Buick LaCrosse I (2004-2009)
            Components on the diagram

              # 3.8l vin 2, manual a/c circuit

              Air conditioning 3.8l vin 2 — 3.8l vin 2, manual a/c circuit — 3.8l vin 2, manual a/c circuit. Buick LaCrosse I (2004-2009)
              Components on the diagram

                Anti-lock brakes

                # Anti-lock brakes circuit

                # Anti-lock brakes circuit (1 of 2)

                Anti-lock brakes — Anti-lock brakes circuit — Anti-lock brakes circuit (1 of 2). Buick LaCrosse I (2004-2009)
                Components on the diagram

                  # Anti-lock brakes circuit (2 of 2)

                  Anti-lock brakes — Anti-lock brakes circuit — Anti-lock brakes circuit (2 of 2). Buick LaCrosse I (2004-2009)
                  Components on the diagram

                    Anti-theft

                    # Forced entry circuit

                    Anti-theft — Forced entry circuit — Forced entry circuit. Buick LaCrosse I (2004-2009)
                    Components on the diagram

                      # Pass-key circuit

                      Anti-theft — Pass-key circuit — Pass-key circuit. Buick LaCrosse I (2004-2009)
                      Components on the diagram

                        Body control modules

                        # Body control modules circuit

                        Body control modules — Body control modules circuit — Body control modules circuit. Buick LaCrosse I (2004-2009)
                        Components on the diagram

                          Computer data lines

                          # Computer data lines circuit

                          Computer data lines — Computer data lines circuit — Computer data lines circuit. Buick LaCrosse I (2004-2009)
                          Components on the diagram

                            Cooling fan 3.6l vin 7

                            # 3.6l vin 7, cooling fan circuit

                            Cooling fan 3.6l vin 7 — 3.6l vin 7, cooling fan circuit — 3.6l vin 7, cooling fan circuit. Buick LaCrosse I (2004-2009)
                            Components on the diagram

                              Cooling fan 3.8l vin 2

                              # 3.8l vin 2, cooling fan circuit

                              Cooling fan 3.8l vin 2 — 3.8l vin 2, cooling fan circuit — 3.8l vin 2, cooling fan circuit. Buick LaCrosse I (2004-2009)
                              Components on the diagram

                                Cruise control 3.6l vin 7

                                # 3.6l vin 7, cruise control circuit

                                Cruise control 3.6l vin 7 — 3.6l vin 7, cruise control circuit — 3.6l vin 7, cruise control circuit. Buick LaCrosse I (2004-2009)
                                Components on the diagram

                                  Cruise control 3.8l vin 2

                                  # 3.8l vin 2, cruise control circuit

                                  Cruise control 3.8l vin 2 — 3.8l vin 2, cruise control circuit — 3.8l vin 2, cruise control circuit. Buick LaCrosse I (2004-2009)
                                  Components on the diagram

                                    Defoggers

                                    # Defoggers circuit

                                    Defoggers — Defoggers circuit — Defoggers circuit. Buick LaCrosse I (2004-2009)
                                    Components on the diagram

                                      Electronic power steering

                                      # Electronic power steering circuit

                                      Electronic power steering — Electronic power steering circuit — Electronic power steering circuit. Buick LaCrosse I (2004-2009)
                                      Components on the diagram

                                        Engine performance 3.6l vin 7

                                        # Wiring diagram engine performance 3.6l vin 7

                                        # Wiring diagram engine performance 3.6l vin 7 (1 of 4)

                                        Engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 (1 of 4). Buick LaCrosse I (2004-2009)
                                        Components on the diagram

                                          # Wiring diagram engine performance 3.6l vin 7 (2 of 4)

                                          Engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 (2 of 4). Buick LaCrosse I (2004-2009)
                                          Components on the diagram

                                            # Wiring diagram engine performance 3.6l vin 7 (3 of 4)

                                            Engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 (3 of 4). Buick LaCrosse I (2004-2009)
                                            Components on the diagram

                                              # Wiring diagram engine performance 3.6l vin 7 (4 of 4)

                                              Engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 — Wiring diagram engine performance 3.6l vin 7 (4 of 4). Buick LaCrosse I (2004-2009)
                                              Components on the diagram

                                                Engine performance 3.8l vin 2

                                                # Wiring diagram engine performance 3.8l vin 2

                                                # Wiring diagram engine performance 3.8l vin 2 (1 of 5)

                                                Engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 (1 of 5). Buick LaCrosse I (2004-2009)
                                                Components on the diagram

                                                  # Wiring diagram engine performance 3.8l vin 2 (2 of 5)

                                                  Engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 (2 of 5). Buick LaCrosse I (2004-2009)
                                                  Components on the diagram

                                                    # Wiring diagram engine performance 3.8l vin 2 (3 of 5)

                                                    Engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 (3 of 5). Buick LaCrosse I (2004-2009)
                                                    Components on the diagram

                                                      # Wiring diagram engine performance 3.8l vin 2 (4 of 5)

                                                      Engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 (4 of 5). Buick LaCrosse I (2004-2009)
                                                      Components on the diagram

                                                        # Wiring diagram engine performance 3.8l vin 2 (5 of 5)

                                                        Engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 — Wiring diagram engine performance 3.8l vin 2 (5 of 5). Buick LaCrosse I (2004-2009)
                                                        Components on the diagram

                                                          Exterior lights

                                                          # Exterior lamps circuit

                                                          Exterior lights — Exterior lamps circuit — Exterior lamps circuit. Buick LaCrosse I (2004-2009)
                                                          Components on the diagram

                                                            Exterior lights 3.6l vin 7

                                                            # 3.6l vin 7, backup lamps circuit

                                                            Exterior lights 3.6l vin 7 — 3.6l vin 7, backup lamps circuit — 3.6l vin 7, backup lamps circuit. Buick LaCrosse I (2004-2009)
                                                            Components on the diagram

                                                              Exterior lights 3.8l vin 2

                                                              # 3.8l vin 2, backup lamps circuit

                                                              Exterior lights 3.8l vin 2 — 3.8l vin 2, backup lamps circuit — 3.8l vin 2, backup lamps circuit. Buick LaCrosse I (2004-2009)
                                                              Components on the diagram

                                                                Ground distribution

                                                                # Ground distribution circuit

                                                                # Ground distribution circuit (1 of 3)

                                                                Ground distribution — Ground distribution circuit — Ground distribution circuit (1 of 3). Buick LaCrosse I (2004-2009)
                                                                Components on the diagram

                                                                  # Ground distribution circuit (2 of 3)

                                                                  Ground distribution — Ground distribution circuit — Ground distribution circuit (2 of 3). Buick LaCrosse I (2004-2009)
                                                                  Components on the diagram

                                                                    # Ground distribution circuit (3 of 3)

                                                                    Ground distribution — Ground distribution circuit — Ground distribution circuit (3 of 3). Buick LaCrosse I (2004-2009)
                                                                    Components on the diagram

                                                                      Headlights

                                                                      # Headlights circuit

                                                                      Headlights — Headlights circuit — Headlights circuit. Buick LaCrosse I (2004-2009)
                                                                      Components on the diagram

                                                                        Horn

                                                                        # Horn circuit

                                                                        Horn — Horn circuit — Horn circuit. Buick LaCrosse I (2004-2009)
                                                                        Components on the diagram

                                                                          Instrument cluster

                                                                          # Instrument cluster circuit, with message center

                                                                          # Instrument cluster circuit, with message center (1 of 2)

                                                                          Instrument cluster — Instrument cluster circuit, with message center — Instrument cluster circuit, with message center (1 of 2). Buick LaCrosse I (2004-2009)
                                                                          Components on the diagram

                                                                            # Instrument cluster circuit, with message center (2 of 2)

                                                                            Instrument cluster — Instrument cluster circuit, with message center — Instrument cluster circuit, with message center (2 of 2). Buick LaCrosse I (2004-2009)
                                                                            Components on the diagram

                                                                              # Instrument cluster circuit, without message center

                                                                              # Instrument cluster circuit, without message center (1 of 2)

                                                                              Instrument cluster — Instrument cluster circuit, without message center — Instrument cluster circuit, without message center (1 of 2). Buick LaCrosse I (2004-2009)
                                                                              Components on the diagram

                                                                                # Instrument cluster circuit, without message center (2 of 2)

                                                                                Instrument cluster — Instrument cluster circuit, without message center — Instrument cluster circuit, without message center (2 of 2). Buick LaCrosse I (2004-2009)
                                                                                Components on the diagram

                                                                                  Interior lights

                                                                                  # Courtesy lamps circuit

                                                                                  Interior lights — Courtesy lamps circuit — Courtesy lamps circuit. Buick LaCrosse I (2004-2009)
                                                                                  Components on the diagram

                                                                                    # Instrument illumination circuit

                                                                                    Interior lights — Instrument illumination circuit — Instrument illumination circuit. Buick LaCrosse I (2004-2009)
                                                                                    Components on the diagram

                                                                                      Navigation

                                                                                      # Parking assistant circuit

                                                                                      Navigation — Parking assistant circuit — Parking assistant circuit. Buick LaCrosse I (2004-2009)
                                                                                      Components on the diagram

                                                                                        Power distribution

                                                                                        # Power distribution circuit

                                                                                        # Power distribution circuit (1 of 4)

                                                                                        Power distribution — Power distribution circuit — Power distribution circuit (1 of 4). Buick LaCrosse I (2004-2009)
                                                                                        Components on the diagram

                                                                                          # Power distribution circuit (2 of 4)

                                                                                          Power distribution — Power distribution circuit — Power distribution circuit (2 of 4). Buick LaCrosse I (2004-2009)
                                                                                          Components on the diagram

                                                                                            # Power distribution circuit (3 of 4)

                                                                                            Power distribution — Power distribution circuit — Power distribution circuit (3 of 4). Buick LaCrosse I (2004-2009)
                                                                                            Components on the diagram

                                                                                              # Power distribution circuit (4 of 4)

                                                                                              Power distribution — Power distribution circuit — Power distribution circuit (4 of 4). Buick LaCrosse I (2004-2009)
                                                                                              Components on the diagram

                                                                                                Power door locks

                                                                                                # Power door locks circuit

                                                                                                Power door locks — Power door locks circuit — Power door locks circuit. Buick LaCrosse I (2004-2009)
                                                                                                Components on the diagram

                                                                                                  Power mirrors

                                                                                                  # Electrochromic mirror circuit

                                                                                                  Power mirrors — Electrochromic mirror circuit — Electrochromic mirror circuit. Buick LaCrosse I (2004-2009)
                                                                                                  Components on the diagram

                                                                                                    # Power mirrors circuit

                                                                                                    Power mirrors — Power mirrors circuit — Power mirrors circuit. Buick LaCrosse I (2004-2009)
                                                                                                    Components on the diagram

                                                                                                      Power seats

                                                                                                      # Driver power seat circuit

                                                                                                      Power seats — Driver power seat circuit — Driver power seat circuit. Buick LaCrosse I (2004-2009)
                                                                                                      Components on the diagram

                                                                                                        # Driver"s lumbar circuit

                                                                                                        Power seats — Driver"s lumbar circuit — Driver"s lumbar circuit. Buick LaCrosse I (2004-2009)
                                                                                                        Components on the diagram

                                                                                                          # Heated seats circuit

                                                                                                          Power seats — Heated seats circuit — Heated seats circuit. Buick LaCrosse I (2004-2009)
                                                                                                          Components on the diagram

                                                                                                            # Passenger"s power seat circuit

                                                                                                            Power seats — Passenger"s power seat circuit — Passenger"s power seat circuit. Buick LaCrosse I (2004-2009)
                                                                                                            Components on the diagram

                                                                                                              Power top/sunroof

                                                                                                              # Power top/sunroof circuit

                                                                                                              Power top/sunroof — Power top/sunroof circuit — Power top/sunroof circuit. Buick LaCrosse I (2004-2009)
                                                                                                              Components on the diagram

                                                                                                                Power windows

                                                                                                                # Power windows circuit

                                                                                                                Power windows — Power windows circuit — Power windows circuit. Buick LaCrosse I (2004-2009)
                                                                                                                Components on the diagram

                                                                                                                  Radio

                                                                                                                  # Radio circuit, with amplifier

                                                                                                                  Radio — Radio circuit, with amplifier — Radio circuit, with amplifier. Buick LaCrosse I (2004-2009)
                                                                                                                  Components on the diagram

                                                                                                                    # Radio circuit, without amplifier

                                                                                                                    Radio — Radio circuit, without amplifier — Radio circuit, without amplifier. Buick LaCrosse I (2004-2009)
                                                                                                                    Components on the diagram

                                                                                                                      # Satellite radio circuit

                                                                                                                      Radio — Satellite radio circuit — Satellite radio circuit. Buick LaCrosse I (2004-2009)
                                                                                                                      Components on the diagram

                                                                                                                        Shift interlock

                                                                                                                        # Ignition lock solenoid circuit, with console shift

                                                                                                                        Shift interlock — Ignition lock solenoid circuit, with console shift — Ignition lock solenoid circuit, with console shift. Buick LaCrosse I (2004-2009)
                                                                                                                        Components on the diagram

                                                                                                                          Shift interlock 3.6l vin 7

                                                                                                                          # 3.6l vin 7, shift interlock circuit

                                                                                                                          Shift interlock 3.6l vin 7 — 3.6l vin 7, shift interlock circuit — 3.6l vin 7, shift interlock circuit. Buick LaCrosse I (2004-2009)
                                                                                                                          Components on the diagram

                                                                                                                            Shift interlock 3.8l vin 2

                                                                                                                            # 3.8l vin 2, shift interlock circuit

                                                                                                                            Shift interlock 3.8l vin 2 — 3.8l vin 2, shift interlock circuit — 3.8l vin 2, shift interlock circuit. Buick LaCrosse I (2004-2009)
                                                                                                                            Components on the diagram

                                                                                                                              Starting/charging

                                                                                                                              # Charging circuit

                                                                                                                              Starting/charging — Charging circuit — Charging circuit. Buick LaCrosse I (2004-2009)
                                                                                                                              Components on the diagram

                                                                                                                                # Starting circuit

                                                                                                                                Starting/charging — Starting circuit — Starting circuit. Buick LaCrosse I (2004-2009)
                                                                                                                                Components on the diagram

                                                                                                                                  Supplemental restraints

                                                                                                                                  # Supplemental restraints circuit

                                                                                                                                  # Supplemental restraints circuit (1 of 2)

                                                                                                                                  Supplemental restraints — Supplemental restraints circuit — Supplemental restraints circuit (1 of 2). Buick LaCrosse I (2004-2009)
                                                                                                                                  Components on the diagram

                                                                                                                                    # Supplemental restraints circuit (2 of 2)

                                                                                                                                    Supplemental restraints — Supplemental restraints circuit — Supplemental restraints circuit (2 of 2). Buick LaCrosse I (2004-2009)
                                                                                                                                    Components on the diagram

                                                                                                                                      Transmission 3.6l vin 7

                                                                                                                                      # 3.6l vin 7, a/t circuit

                                                                                                                                      Transmission 3.6l vin 7 — 3.6l vin 7, a/t circuit — 3.6l vin 7, a/t circuit. Buick LaCrosse I (2004-2009)
                                                                                                                                      Components on the diagram

                                                                                                                                        Transmission 3.8l vin 2

                                                                                                                                        # 3.8l vin 2, a/t circuit

                                                                                                                                        Transmission 3.8l vin 2 — 3.8l vin 2, a/t circuit — 3.8l vin 2, a/t circuit. Buick LaCrosse I (2004-2009)
                                                                                                                                        Components on the diagram

                                                                                                                                          Trunk, tailgate, fuel door

                                                                                                                                          # Trunk release circuit

                                                                                                                                          Trunk, tailgate, fuel door — Trunk release circuit — Trunk release circuit. Buick LaCrosse I (2004-2009)
                                                                                                                                          Components on the diagram

                                                                                                                                            Warning systems

                                                                                                                                            # Warning systems circuit

                                                                                                                                            # Warning systems circuit (1 of 2)

                                                                                                                                            Warning systems — Warning systems circuit — Warning systems circuit (1 of 2). Buick LaCrosse I (2004-2009)
                                                                                                                                            Components on the diagram

                                                                                                                                              # Warning systems circuit (2 of 2)

                                                                                                                                              Warning systems — Warning systems circuit — Warning systems circuit (2 of 2). Buick LaCrosse I (2004-2009)
                                                                                                                                              Components on the diagram

                                                                                                                                                Wiper/washer

                                                                                                                                                # Wiper/washer circuit

                                                                                                                                                Wiper/washer — Wiper/washer circuit — Wiper/washer circuit. Buick LaCrosse I (2004-2009)
                                                                                                                                                Components on the diagram