GROUND DISTRIBUTION – Buick Lucerne CX 2007 – SYSTEM WIRING DIAGRAMS

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 4) for Buick Lucerne CX 2007

List of elements for Ground Distribution Wiring Diagram (1 of 4) for Buick Lucerne CX 2007:

• (3.8l) ignition control module (icm)
• (4.6l) a/c compressor clutch
• (4.6l) secondary air injection (air) check valve
• (4.6l) secondary air injection (air) pump
• (if equipped) sunroof control module
• (on right front of engine compartment, forward of strut tower) underhood fuse block
• (w/ magnetic ride control) electronic suspension control (esc) module
• 14 cm (6 in) from branch for throttle body assembly)
• 3.8l & pzev
• 4.6l
• A c2
• Automatic level control (alc) compressor
• Automatic transmission
• B c1
• Battery
• Battery current sensor
• Body control module (bcm)
• Crnk relay 3
• Electronic brake control module (ebcm)
• Engine control module (ecm)
• Engine oil pressure (eop) switch
• Fuel pump & sender assembly
• G100 (4.6l) (below exhaust gas recirculation (egr) valve)
• G101 (left front corner of engine compartment)
• G112 (except 3.8l) (lower left rear of engine)
• G114 (lower left rear of engine)
• G115 (lower left rear of engine)
• G302 (under right front passenger's seat)
• G303 (below right side of rear seat)
• G306 (at left "c" pillar)
• G307 (at right "c" pillar)
• G403 (right front wall of luggage compartment)
• Ignition coil/ module 1
• Ignition coil/ module 2
• Ignition coil/ module 3
• Ignition coil/ module 4
• Ignition coil/ module 5
• Ignition coil/ module 6
• Ignition coil/ module 7
• Ignition coil/ module 8
• Inflatable restraint sensing & diagnostic module (sdm)
• Keyless entry antenna
• Left auxiliary tail lamp assembly
• License lamp
• Mass air flow (maf)/ intake air temperature (iat) sensor
• Nca
• Rear window defogger
• Right auxiliary tail lamp assembly
• Right tail lamp assembly
• Run/ crnk relay 6
• S106 (in engine harness, approximately 7 cm (3 in) from branch for throttle body assembly)
• S108 (in engine harness, approximately 10 cm (4 in) from breakout for automatic transmission)
• S133 (in even bank ignition coil harness, between c139 & ignition coil/module 2)
• S144
• S385 (in body harness, approximately 10 cm (4 in) from g306)
• S402 (in rear fascia harness, approximately 7 cm (3 in) from breakout for license lamps)
• Transmission control module (tcm)
• Windshield wiper motor

Ground Distribution Wiring Diagram (2 of 4) for Buick Lucerne CX 2007

List of elements for Ground Distribution Wiring Diagram (2 of 4) for Buick Lucerne CX 2007:

• (on right front of engine compartment, forward of strut tower) underhood fuse block
• (pzev) secondary air injection (air) check valve
• (to passenger seat adjuster switch diagram 3 of 4)
• (w/ keyless entry start/ extended range) hood ajar switch
• 12 cm (5 in) from breakout for c800)
• A/c compressor clutch
• Approximately 6 cm (2 in) from breakout for a/t shift lock control solenoid)
• Automatic transmission
• Auxiliary power outlet console
• Blower motor control module
• Body control module (bcm)
• C1 c
• C2 d
• Cigar lighter
• Cool/fan relay 2
• Engine oil level switch
• Engine oil pressure (eop) switch
• Floor shifter assembly
• For i/p compartment lamp)
• Front passenger door module (fpdm)
• G104 (right front corner of engine compartment)
• G112 (3.8l) (lower left rear of engine)
• G304 (under right front passenger's seat)
• Headlamp switch
• Horn assembly
• I/p compartment lamp
• Left front fog lamp
• Left front headlamp assembly
• Mass air flow (maf)/ intake air temperature (iat) sensor
• Nca
• Powertrain control module (pcm)
• Reverse lockout solenoid
• Right cooling fan
• Right front door courtesy lamp
• Right front fog lamp
• Right front headlamp assembly
• Right rear door latch assembly
• Right rear door window switch
• Run/ crnk relay 6
• S383 (in center console harness, between breakout for a/t shift lock control solenoid & breakout for auxiliary hvac control module)
• S387
• Throttle actuator control (tac) module
• Traction control switch
• W/ custom bucket seat
• Windshield washer fluid level switch
• Windshield washer fluid pump
• Windshield washer solvent heater
• Wpr relay 8

Ground Distribution Wiring Diagram (3 of 4) for Buick Lucerne CX 2007

List of elements for Ground Distribution Wiring Diagram (3 of 4) for Buick Lucerne CX 2007:

• (from splice s387 diagram 2 of 4)
• (w/ custom bucket seat) ignition lock cylinder solenoid
• (w/ front cooling heater) front climate control seat module
• (w/o custom bucket seat) shift lock control column shifter solenoid
• (w/o custom bucket seat) traction control switch
• Approximately 8 cm (4 in) from breakout for inflatable restraint seat position sensor)
• Ashtray lamp
• Brake fluid level switch
• C2 d
• C205 & turn signal/multifunction switch connector c4)
• Data link connector (dlc)
• Driver door module (ddm)
• Driver information display switch
• Driver seat adjuster switch
• Front auxiliary power outlet
• Front cigar lighter
• G300 (under driver's seat)
• Hazard switch
• Heated steering wheel control module
• Horn switch
• Hvac control module
• Inflatable restraint passenger presence system (pps) module
• Inflatable restraint steering wheel module coil
• Inside air tempe- rature sensor
• Instrument panel cluster
• Instrument panel cluster (ipc)
• Left front door courtesy lamp
• Left steering wheel control switch
• Lighter)
• Memory seat module (msm)
• Nca
• Passenger lumbar adjuster switch
• Passenger seat adjuster switch
• Rear compartment lid release switch
• Restraint steering wheel module coil)
• Right steering wheel control switch
• S203 (in i/p harness, approximately 36 cm (14 in) from breakout for hvac module)
• S306 (in right front seat harness, approximately 7 cm (3 in) from breakout for passenger seat belt switch)
• Sunload twilight sensor
• Theft deterrent module (tdm)
• Turn signal/ multifunction switch
• W/ 8-way passenger seat adjuster
• W/ automatic auxiliary temperature
• W/ heated nozzles
• W/o 8-way passenger seat adjuster
• W/o automatic auxiliary temperature
• W/o custom bucket seat

Ground Distribution Wiring Diagram (4 of 4) for Buick Lucerne CX 2007

List of elements for Ground Distribution Wiring Diagram (4 of 4) for Buick Lucerne CX 2007:

• (below left side of rear seat) rear fuse block
• (if equipped) object alarm module
• (if equipped) outside moisture sensor
• (w/ digital audio system s-band) digital radio receiver (drr)
• (w/ onstar) vehicle communication interface module
• (w/ suspension system) automatic level control module
• Amplifier
• Amplifier connector c1)
• Center high mounted stop lamp (chmsl)
• Dr lck relay 9
• Dr unlck relay 10
• Fuel/ pump relay 7
• G110 (ground strap to generator)
• G111 (in engine compartment, ground strap to right frame rail)
• G301 (under left rear seat)
• G305 (under driver's seat)
• G402 (left rear of luggage compartment)
• Garage door opener transmitter
• Inflatable restraint i/p module indicator
• Inside rearview mirror
• Left front vanity mirror lamp
• Left rear door latch assembly
• Left rear door window switch
• Left roof rail reading lamp
• Left tail lamp assembly
• Nca
• Overhead console lamp
• Radio
• Rap relay 1
• Rear compartment lid latch
• Rear defog relay 14
• Remote control door lock receiver (rcdlr)
• Right front vanity mirror lamp
• Right roof rail reading lamp
• Run relay 3
• S312 (in headliner harness, approximately 10 cm (4 in) from branch for c321)
• S313
• Sunroof switch
• Trunk relse relay 6
• W/ premium audio branded & amplifier