All Wiring Diagrams for Buick Terraza CXL 2005 model

AIR CONDITIONING

Compressor Wiring Diagram for Buick Terraza CXL 2005

List of elements for Compressor Wiring Diagram for Buick Terraza CXL 2005:

• (at engine to transmission stud)
• +5v reference
• A/c compressor clutch
• A/c cltch fuse 6 10a
• A/c cltch relay
• A/c press signal
• A/c refrigerant pressure sensor (on high pressure hose, near high pressure hose connection to a/c compressor)
• A/c request
• A/c request ind cntrl
• A/c request switch
• Class 2 data
• Comp control
• Computer data lines system
• Diode 3
• G115
• Hot in run
• Hot in run, bulb test or start
• Hvac control module (in dash center trim panel, beneath radio)
• Ign
• Ind
• Logic
• Low ref
• Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly)
• Underhood fuse block (in underhood compt, above right front wheel well)

Manual A/C Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Manual A/C Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (below right side of dash) blower motor resistor assembly
• (dash harn, main bundle 9 cm from breakout for app sensor) s255
• (dash harn, main bundle, 9 cm from breakout for vent & floor actuator)
• 5 volt ref
• A/c request
• A/c request ind cntrl
• A/c request switch
• Air temp dr cntrl
• Air temperature actuator/ left air temperature actuator (behind center of dash)
• Aux
• Aux air cntrl
• Aux blwr motor sw
• Aux blwr spd cntrl
• Aux blwr speed
• Aux mode dr cntrl
• Auxiliary air temperature actuator (behind left rear interior body panel)
• Auxiliary mode actuator (in rear hvac module)
• Battery
• Blower motor (below right side of dash)
• Blower motor relay
• Blwr sw hi
• Blwr sw off
• Class 2 data
• Clstr/ hvac fuse 8 10a
• Cntrl sig
• Computer data lines system
• Def door cntrl
• Defrost actuator (behind center of dash, left side of front hvac module)
• Door cntrl
• Driver temperature control sw
• Evap temp sig
• Evaporative temperature sensor (in front hvac module, mounted to evaporator core)
• Front blower motor switch
• Frt blwr hi fuse 34 40a
• Frt/ blwr fuse 27 25a
• G200 (on right side of dash support beam, above dash compart)
• Ground
• Hot at all times
• Hot in run
• Hvac control module (in dash center trim panel, beneath radio)
• Hvac/ rpa/ cruise fuse 17 10a
• I/p fuse block (right side of dash, behind access panel)
• Ign
• Ignition 1
• Ind
• Interior lights system
• Lamp dim grd
• Lamp dim sig
• Lo ref
• Logic
• Low ref
• Mode sig
• Mode switch
• Motor off req hvac aux cntrl
• Off
• Pass temperature control sw
• Pnk
• Rec dr cntrl
• Recirculation actuator (above blower motor, right side of front hvac module)
• Red
• Right air temp dr cntrl
• Right air temperature actuator
• S246 (dash harn, 12.5 cm from breakout for recirc actuator)
• S253
• S271 (dash harn, behind radio, 20 cm from main bundle toward right side of dash)
• Speed 1 req
• Speed 3 req speed 2 req
• Tan
• Temperature control sw
• Underhood fuse block (in underhood compt, above right front wheel well)
• Vent & floor actuator (behind center of dash, left side of front hvac module)
• Vnt & flr dr cntrl
• W/ front & rear hvac only
• W/ front hvac only

Manual A/C Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Manual A/C Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• (at engine to transmission stud)
• (in forward lamp harness, 10 cm from breakout for c104)
• (right side of engine compt, on upper front of radiator support)
• +5v reference
• A/c compressor clutch
• A/c cltch fuse 6 10a
• A/c cltch relay
• A/c off for engine protection engine coolant hot
• A/c press signal
• A/c refrigerant pressure sensor (on high pressure hose, near high pressure hose connection to a/c compressor)
• Aux blwr motor speed cntrl
• Aux blwr motor speed sig
• Aux fan speed select
• Aux temp select
• Auxiliary blower motor (behind left rear interior body panel)
• Auxiliary blower motor control module (in rear hvac module, behind left rear interior body panel)
• Blwr motor speed cntrl
• Class 2 data
• Class 2 serial data
• Comp control
• Computer data lines system
• Digital video disc (dvd) player
• Diode 3
• Ect sensor
• Engine controls system
• Engine coolant temperature (ect) sensor (in left side of rear cylinder head)
• Fan 1 fuse 29 30a
• Fan 1 relay
• Fan 2 fuse 33 40a
• Fan 2 relay
• Fan 3 relay
• Fan speed switch
• G100
• G115
• G401 (on lower left "d" pillar)
• Ground
• High spd fan
• Hot at all times
• Hot in run
• Hot in run, bulb test or start
• Ign
• Instrument panel cluster
• Left cooling fan (behind left side of radiator)
• Logic
• Low ref
• Low spd fan
• Message center
• Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly)
• Red
• Right cooling fan (behind right side of radiator)
• Rr blwr/ 110vac fuse 26 25a
• S102 (in forward lamp harness, 6.5 cm from breakout for g100)
• S106
• S140 (in fuel injector harn, 4 cm from breakout for fuel injector 2 toward fuel injector 3)
• Temp select switch
• Underhood fuse block (in underhood compt, above right front wheel well)
• W/ rear a/c

ANTI-LOCK BRAKES

Anti-lock Brakes Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (lower left side of engine compt, on left strut tower) electronic brake control module (ebcm)
• 5v ref
• Abs fuse 13 10a
• Abs motor fuse 31 60a
• B + sol vlv cntrl
• B+ motor control
• Brake pressure modulator valve (bpmv)
• Class 2 ser data
• Computer data lines system
• Del torque sig
• G113 (at engine to transmission stud above g115)
• G115 (at engine to transmission stud nearest starter, below g113
• Ground
• Hot at all times
• Hsv 2 (w/ tcs)
• Hsv1 (w/ tcs)
• I/p fuse block (right side of dash)
• Ign 1 volt
• Ign main relay
• Lateral accelerometer signal
• Left front inlet
• Left front outlet
• Left rear inlet
• Left rear outlet
• Lf wheel speed sens low ref
• Lf wheel speed sens sig
• Low ref
• Lr wheel speed sens low ref
• Lr wheel speed sens sig
• Pnk
• Powertrain control module (left side of engine compartment, in air cleaner assembly)
• Pump motor
• Req torque sig
• Req torque sig del torque sig
• Rf wheel spd sens sig
• Rf wheel speed sens low ref
• Right front inlet
• Right front outlet
• Right rear inlet
• Right rear outlet
• Rr wheel spd sens sig
• Rr whl spd sen low ref
• S155
• Solenoid valves
• Str wheel pos sig a
• Str wheel pos sig ab
• Tan
• Underhood fuse block (in underhood compartment, above right front wheel well)
• Usv 1 (w/ tcs)
• Usv 2 (w/ tcs)
• Yaw rate sen sig

Anti-lock Brakes Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• (attached to left front wheel hub) left front wheel speed sensor (wss)
• (attached to left rear wheel hub)
• (attached to right front wheel hub) right front wheel speed sensor (wss)
• (attached to right rear wheel hub) right rear wheel speed sensor (wss)
• (or tan)
• 10v ref
• 5v ref
• Abs ind
• Body control module (bcm) (below left side of dash, left of steering column)
• Brake pedal position sensor (under left side of dash)
• C1 underhood fuse block (in underhood compartment, above right front wheel c2
• Class 2 ser data
• Computer data lines system
• G200 (on right side of dash support beam)
• Hi spd gmlan ser data +
• I/p multifunction switch
• Ign 1 volt
• Instrument panel cluster (ipc)
• Lateral accel- erometer sig
• Left rear wheel speed sensor (wss)
• Logic
• Low ref
• Message center
• Nca
• Pnk
• Red
• S255
• Steering wheel position sensor (near bottom of steering column)
• Stop lamp sw sig
• Stop lmp sw sig
• Strg wheel pos sig a
• Strg wheel pos sig b
• Svc abs sys svc stability sys svc traction sys stability cntrl act stability cntrl off traction cntrl act traction cntrl off
• Tan
• Traction control off ind
• Traction control switch
• Traction control switch sig
• Well)
• Yaw rate & lateral acceleration sensor (at left front corner of right front floor)
• Yaw rate sen sig

ANTI-THEFT

Forced Entry Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Forced Entry Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (behind top left side of dash) remote control door lock receiver (rcdlr)
• (early production)
• Antenna sig
• Battery b+
• Body control module (behind left side of dash, left of steering column)
• Class 2
• Class 2 serial data
• Computer data lines system
• Delayed locking, door(s) ajar, liftgate ajar, key fob low battery
• Doors lock ctrl
• Doors unlock ctrl
• Driver door key switch (w/ anti- theft system)
• Driver door lock switch
• Drvr ajar sw sig
• Drvr door lock ctrl
• Drvr lock sig
• Drvr open sw sig
• Drvr unlock sig
• Enable sig
• Exterior lights system
• Front passenger door lock switch
• Frt pass ajar sw sig
• Frt pass lock sig
• Frt pass open sw sig
• Frt pass unlock sig
• G200 (right side of dash support beam)
• G301 (on lower left "b" pillar)
• G302 (on lower right "b" pillar)
• Ground
• Horn ctrl
• Horns system
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Instrument panel cluster (ipc)
• Interior lights system
• Key sw lock sig
• Key sw unlock sig
• L slider ajar sw sig
• L slider open sw sig
• Liftgate ajar sw sig
• Liftgate open sw sig
• Lock
• Logic
• Message center
• Park lamp ctrl
• R slider ajar sw sig
• R slider open sw sig
• Rfa mdls fuse 10a
• S255
• S555
• S666
• Security indicator
• Tan
• Theft led ctrl
• Theft light emitting diode (led) (top of dash)
• Trunk/ lks fuse 1 15a
• Unlock
• Volt (+)

Forced Entry Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Forced Entry Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• (body harn, 5.5 cm from c313 breakout) s311
• A c2
• Ajar
• B c1
• B c2
• C1 a
• C1 b
• C2 a
• C2 d
• Driver door latch assembly
• Early production
• Front passenger door latch assembly
• G301 (on lower left "b" pillar)
• G302 (on lower right "b" pillar)
• G400 (lower right "d" pillar)
• G401 (lower right "d" pillar)
• Late production
• Left door contact plate
• Left middle door lock actuator
• Left sliding door jamb switch
• Liftgate door jamb switch
• Liftgate door lock actuator
• Lock
• Open
• Right door contact plate
• Right middle door lock actuator
• Right sliding door jamb switch
• S313 (body harn, 10 cm from c313 breakout)
• S320
• S331
• S555
• S666
• S911
• Sit-n- lift seat diode 3
• Tan
• W/ sit- n-lift
• W/o sit- n-lift

Pass-Key Wiring Diagram for Buick Terraza CXL 2005

List of elements for Pass-Key Wiring Diagram for Buick Terraza CXL 2005:

• Battery b+
• Body control module (behind left side of dash, left of steering column)
• Class 2 data
• Data link connector (below left side of dash)
• G200 (right side of dash support beam)
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Ignition key
• Instrument panel cluster (ipc)
• Low reference
• Powertrain control module (left side of engine compt, in air cleaner assembly)
• Reader/ exciter
• S255
• Security indicator
• Splice pack sp205 (below left dash access panel)
• Tan
• Theft deterrent exciter module (part of ignition key cylinder)
• Transponder
• Trunk/ lks fuse 1 15a
• Underhood fuse block (above right front wheelwell)

BODY CONTROL MODULES

Body Control Modules Wiring Diagram for Buick Terraza CXL 2005

List of elements for Body Control Modules Wiring Diagram for Buick Terraza CXL 2005:

• (below left side of dash, left of steering column) body control module (bcm)
• (right side of eng compt, on frame rail)
• 10 volt ref
• 12 volt ref
• A/t shift lock ctrl
• Actuator lock ctrl
• Actuator unlock ctrl
• Air conditioning system
• Anti-lock brakes system
• Anti-theft system
• Battery
• Battery positive volt
• Body control module (bcm) (below left side of dash, left of steering column)
• Brk pedal pos sens sig
• Chime ctrl
• Chmsl bk/up fuse 17 15a
• Class 2 serial data
• Computer data lines system
• Courtesy lmp high ctrl
• Courtesy lmps sw off sig
• Courtesy lmps sw on sig
• Crank volt
• Cruise cancel sig
• Cruise control system
• Current sens sig
• Defogger system
• Dimmer sw high beam sig
• Door lock key sw lock sig
• Door locks system
• Drl ambient sens sig
• Drv door lock sw lock sig
• Drv door lock unlock ctrl
• Drv heated seat rly ctrl
• Drvr dr lock sw unlock sig
• Dvr heated seat sens sig
• Exterior lights system
• Flash to pass sw sig
• Frt wiper sw high sig
• Frt wsw fuse 24 15a
• G102
• G201 (left side of dash support beam)
• G301 (on lower left "b" pillar)
• Ground
• Hazard sw sig
• Headlamp sw on sig
• Headlamps off sig
• Headlights system
• High beam rly ctrl
• Hood ajar sw sig
• Horn rly ctrl
• Horns system
• Hot at all times
• I/p dimming ctrl
• I/p dimming voltage
• I/p fuse block (right side of dash, behind access panel)
• Ignition 1 volt
• Ignition 3 volt
• Int/ lamp fuse 5 10a
• Interior lights system
• Key in ignition sw sig
• Key switch unlock sig
• Keyless entry sig
• Left turn sig sw sig
• Lf door ajar sw sig
• Lf door open sw sig
• Lf turn sig lmp volt
• Lftgate ajar sw sig (early production)
• Low beam rly ctrl
• Low ref
• Lr door ajar sw sig
• Lr door open sw sig
• Lr stop/turn lmp sply volt
• Navigation system
• Park brake sw sig
• Park brake switch (park brake assembly)
• Park lamp rly ctrl
• Park lamp sw on sig
• Pass door lock sw lock sig
• Pass dr lock sw unlock sig
• Pass heated seat rly ctrl
• Pass heated seat sens sig
• Pnk
• Pnp park sig
• Power courtesy lamp
• Power distribution system
• Rap rly ctrl
• Rear compt lid ajar sw
• Rear defog rly ctrl
• Rf door ajar sw sig
• Rf door open sw sig
• Rf turn sig lmp volt
• Right turn sig sw sig
• Rr door ajar sw sig
• Rr door open sw sig
• Rr stop/turn lmp sply volt
• Run rly ctrl
• S331
• Seats system
• Security indicator ctrl
• Shift interlock system
• Starting/charging system
• Stop lamp sply voltage
• Stop/ turn fuse 12 20a
• Tan
• Traction ctrl sw sig
• Trunk, tailgate, fuel doors system
• Trunk/ lks fuse 1 15a
• Underhood fuse block (above right front wheel well)
• Warning system
• Washer pump ctrl
• Windshield washer sw sig
• Wiper motor park sw sig
• Wiper sw sig 2
• Wiper/washer system
• Wndshld wash sw high sig
• Wndshld wash sw low sig

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram for Buick Terraza CXL 2005

List of elements for Computer Data Lines Wiring Diagram for Buick Terraza CXL 2005:

• A11
• Body control module (below left side of dash, left of steering column)
• Class 2 serial data
• Data link connector (dlc) (below left side of dash, left of steering column)
• Digital radio receiver
• Dvd player
• Electronic brake control module (ebcm) (lower left side of engine compartment, on left strut tower)
• G200 (right side of dash support beam)
• Hot at all times
• Hvac control module (in dash center trim panel, beneath radio)
• I/p fuse block (right side of dash, behind access panel)
• Inflatable restraint sensing & diagnostic module (sdm) (below passenger seat)
• Instrument panel cluster
• Left sliding door module
• Memory seat module (under driver seat)
• Onstar fuse 6 10a
• Powertrain control module (left side of engine compt, in air cleaner assembly)
• Radio
• Right sliding door module
• S246
• Splice pack sp205 (dash harn, near headlamp switch connector, behind left dash access panel)
• Tan
• Underhood fuse block (above right front wheelwell)
• Vehicle communication unit (vcu) (behind upper left side of dash)

COOLING FAN

Cooling Fan Wiring Diagram for Buick Terraza CXL 2005

List of elements for Cooling Fan Wiring Diagram for Buick Terraza CXL 2005:

• (at engine to transmission stud)
• (in forward lamp harness, 10 cm from breakout for c104)
• (right side of engine compt, on upper front of radiator support)
• A/c compressor clutch
• A/c cltch fuse 6 10a
• A/c cltch relay
• Auxiliary blower motor control module (in rear hvac module, behind left rear interior body panel)
• Class 2 data
• Comp control
• Computer data lines system
• Diode 3
• Ect sensor
• Engine controls system
• Engine coolant temperature (ect) sensor (in left side of rear cylinder head)
• Fan 1 fuse 29 30a
• Fan 1 relay
• Fan 2 fuse 33 40a
• Fan 2 relay
• Fan 3 relay
• G100
• G115
• High spd fan
• Hot at all times
• Hot in run
• Hot in run, bulb test or start
• Left cooling fan (behind left side of radiator)
• Low ref
• Low spd fan
• Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly)
• Red
• Right cooling fan (behind right side of radiator)
• S102 (in forward lamp harness, 6.5 cm from breakout for g100)
• S106
• S140 (in fuel injector harn, 4 cm from breakout for fuel injector 2 toward fuel injector 3)
• Underhood fuse block (in underhood compt, above right front wheel well)

CRUISE CONTROL

Cruise Control Wiring Diagram for Buick Terraza CXL 2005

List of elements for Cruise Control Wiring Diagram for Buick Terraza CXL 2005:

• (on steering
• 10 volt ref
• Body control module (bcm) (below left side side of dash)
• Brake pedal position sensor (above brake pedal assembly)
• Brake sen sig
• C277
• C279
• Cancel
• Cc sig switch
• Class 2 data
• Class 2 serial data
• Computer data lines
• Cruise cancel
• Cruise/ switch fuse 9 2a
• Hot in acc or run
• I/p fuse block
• I/p fuse block (behind left side of dash)
• Inflatable restraint steering wheel module coil
• Instrument panel cluster (ipc)
• Low ref
• Pnk
• Powertrain control module (pcm) (left side of engine in air cleaner assembly)
• Res+
• Right spoke) cruise control lever
• Set-
• Stop lamp sup
• Stop lmp volt sup
• Tan
• Throttle actuator control (tac) module (top left side of intake)
• Uart data(sec)
• Uartdata(pri)
• Underhood fuse block (above right front wheelwell)
• Vehicle speed sensor (vss) (right side of transmission)
• Vss
• Vss high
• Vss low
• Wheel below

DEFOGGERS

Defoggers Wiring Diagram for Buick Terraza CXL 2005

List of elements for Defoggers Wiring Diagram for Buick Terraza CXL 2005:

• "b" pillar) g301
• "b" pillar) g302
• (above right front
• (at base of left
• (at base of right
• (at lower left"d"pillar)
• (at lower right"d"pillar)
• (below left side of steering column)
• (early production)
• (late production)
• Body control module(bcm)
• C200
• Class 2 data
• Def indicator control
• Def request control
• Defogger switch
• Driver outside rearview mirror
• E nca
• G400
• G401
• Heated mirror fuse 16 10a
• Hot at all times
• Hvac control module (under right side of center console, near dash)
• I/p fuse block (in i/p behind right i/p access panel)
• Ign
• Mirror defogger
• Nca
• Passenger outside rearview mirror
• Rear fog relay control
• Rear window defogger grid
• Rear window defogger relay 30
• Rr defog fuse 36 40a
• S555
• S666
• Under hood fuse block
• Wheel well)

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Buick Terraza CXL 2005

List of elements for Electronic Suspension Wiring Diagram for Buick Terraza CXL 2005:

• Acces- sory volt
• Air inflator switch (behind left rear wheelwell)
• Alc air inflator sol ctrl
• Alc exhaust sol ctrl
• Alc rly ctrl coil supp volt
• Auto level control (alc) air compressor (on left rear frame)
• Auto level control (alc) air inflator solenoid (in left rear of vehicle, behind wheelwell)
• Auto level control (alc) sensor (mounted to rear crossmember, above rear axle)
• Auto level control air inflator relay
• Batt+
• Elc fuse 15 25a
• Elc fuse 2 20a
• G401 (lower left "d" pillar)
• Ground
• Hot at all times
• Hot w/ rap relay energized
• I/p fuse block (right side of dash, in right front door opening)
• Red/
• Ride ctrl serial data
• S300
• S431
• S433
• Timer rly coil ctrl

ENGINE PERFORMANCE

3.5L VIN 8

3.5L VIN 8, Engine Performance Wiring Diagram (1 of 4) for Buick Terraza CXL 2005

List of elements for 3.5L VIN 8, Engine Performance Wiring Diagram (1 of 4) for Buick Terraza CXL 2005:

• (at engine to transmission stud above g115) g113
• (in fuel injector harness, 4 cm (1.6 in) from breakout for fuel injector 2 toward fuel injector 3 s140
• (on left top rear of engine) exhaust gas recirculation valve
• (pins 64-72 not used)
• (top right rear of engine) manifold absolute pressure sensor
• 12 v ref
• 5 volt ref
• Ckp sensor sig
• Cmp sensor sig
• Ect sensor sig
• Egr pos sig
• Egr sol high
• Egr sol low
• Engine coolant temperature sensor (in left side of rear cylinder head, above transmission)
• Engine oil pressure switch (starter motor)
• Evap canister purge solenoid (on left side of engine, rear of throttle body)
• Evap purge sol
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel injectors
• Gen fd duty
• Gen on sig
• Ground
• Heated oxygen sensor (ho2s) 1 (in right bank exhaust manifold, before catalytic converter)
• Ho2s heater 1
• Ho2s sig high
• Ho2s sig low
• Ic 1 ctrl
• Ic 2 ctrl
• Ic 3 ctrl
• Knock sensor bank 1 (right side of engine block)
• Knock sensor bank 2 (left side of engine block)
• Ks 1 sig
• Ks 2 sig
• Low ref
• Map sensor sig
• Nca
• Oil press sig
• Pnk
• Powertrain control module (left side of engine compt, in air cleaner assembly)
• S142
• S155
• Starting/ charging system
• Tan
• Uart data

3.5L VIN 8, Engine Performance Wiring Diagram (2 of 4) for Buick Terraza CXL 2005

List of elements for 3.5L VIN 8, Engine Performance Wiring Diagram (2 of 4) for Buick Terraza CXL 2005:

• (at engine to transmission stud above g115) g113
• (f46)
• (in air intake) mass air flow/ intake air temperature sensor
• (left side of intake) throttle actuator control module
• (lower rear of engine) crankshaft position sensor
• (right side of engine) camshaft position sensor
• 1-2 shift sol
• 2-3 shift sol
• 2ndary uart
• 5 volt ref
• Aap sensor 1
• Accelerator pedal position sensor (on accelerator bracket)
• Anti-lock
• App sensor 2
• At iss high sig
• At iss low sig
• Axle act cntrl
• Brakes anti-lock
• Controls transmission
• Dlvd torq sig
• Ground
• Heated oxygen sensor (ho2s) 2 (in exhaust after catalytic converter)
• Ho2s heater 2
• Ho2s sig high 2
• Ho2s sig low 2
• Iat
• Iat sensor sig
• Ign 1 volt
• Ignition control module (icm) (top rear of eng)
• Low ref
• Maf
• Maf sensor sig
• Nca
• Pc sol high
• Pc sol low
• Pnk
• Powertrain control module (left side of engine compt, in air cleaner assembly)
• Primary uart
• Range sw 3
• Range sw b
• Range sw p
• Req torq sig
• Stop lamp
• System
• System brakes
• Tan
• Tcc pwm sol
• Tcc release
• Tft sns sig
• Trans range sw
• Vehicle spd
• Vss high sig
• Vss low sig

3.5L VIN 8, Engine Performance Wiring Diagram (3 of 4) for Buick Terraza CXL 2005

List of elements for 3.5L VIN 8, Engine Performance Wiring Diagram (3 of 4) for Buick Terraza CXL 2005:

• (at engine to transmission stud above g115) g113
• (mounted to right side of transmission) vehicle speed sensor
• 1-2 shift solenoid valve
• 2-3 shift solenoid valve
• Automatic transmission
• Automatic transmission fluid temperature sensor
• Automatic transmission input shaft speed sensor
• Elec ign fuse 15a
• Eng snsr/ evap fuse 15a
• Etc fuse 15a
• Fuel inj fuse 15a
• Fuel pump fuse 15a
• Fuel pump relay
• G113 (at engine to transmission stud above g115)
• Hot at all times
• I/p fuse block (right c1 side of dash)
• Ign main relay
• Internal mode switch
• Pcm etc fuse 15a
• Pcm ign fuse 10a
• Pnk
• Pressure control solenoid valve
• Pwr/ trn relay
• Red
• S155
• S175
• Tan
• Torque converter clutch release seat
• Torque converter clutch solenoid valve
• Trans sol fuse 10a
• Underhood fuse block (above right front wheel well)

3.5L VIN 8, Engine Performance Wiring Diagram (4 of 4) for Buick Terraza CXL 2005

List of elements for 3.5L VIN 8, Engine Performance Wiring Diagram (4 of 4) for Buick Terraza CXL 2005:

• (in dash harness,
• (on high pressure hose, near high pressure hose connection to a/c compressor) a/c refrigerant pressure sensor
• (on lower left "b" pillar) g301
• 15 cm (5.9 in) from breakout for c203 toward right side of dash) s273
• 5 volt ref
• A/c clutch relay
• A/c press sig
• A/c system
• Acc
• Battery
• Body control module (below left side of dash, left of steering column)
• Cnstr/ vent fuse 10a
• Computer data lines system
• Cooling fans system
• Cruise control system
• Cruise sig
• Evap canister vent solenoid (above fuel tank)
• Evap vent sol
• Frt wsw fuse 15a
• Fuel level sig
• Fuel pump & sender assembly (top of fuel tank)
• Fuel pump relay
• Fuel tank press
• Fuel tank pressure sensor (top of fuel tank)
• High fan
• Hot at all times
• I/p fuse block (right side of dash)
• Ignition 1
• Ignition 3
• Ignition switch
• Instrument panel cluster
• Lock
• Low fan
• Low ref
• Malfunction indicator lamp (mil)
• Mil control
• Pcm relay
• Pnk
• Powertrain control module (left side of engine compt, in air cleaner assembly)
• Run
• S279 (in steering column harness, 20 cm (7.9 in) from c201)
• S371 (in fuel tank harness, 30 cm (11.8 in) from c305)
• S401 (y3g or y3h)
• Serial data
• Start
• Starter enable
• Starting system
• Stop lamp sw
• Tan
• Underhood fuse block
• Underhood fuse block (above right front wheel well)
• Vehicle speed sig

EXTERIOR LIGHTS

Backup Lamps Wiring Diagram for Buick Terraza CXL 2005

List of elements for Backup Lamps Wiring Diagram for Buick Terraza CXL 2005:

• (at engine to transmission stud above g115) g113
• Automatic transmission
• Backup lmp sup volt
• Batt positive volt
• Body control module (bcm) (below left side side of dash)
• Chmsl back-up fuse 17 15a
• G400 (on lower right "d" pillar)
• G401 (on lower left "d" pillar)
• Ground distribution system
• Hot at all times
• I/p fuse block (right side of dash)
• Internal mode switch
• Left backup lamp
• Navigation system (rear parking assist)
• Range sw b
• Right backup lamp
• S155
• S317 (in body harn, 23.5 cm from breakout for c313 toward rear of vehicle)
• Trans range sw

Exterior Lamps Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (on lower right "b" pillar)
• 5v ref
• Auto
• Batt pos voltage
• Batt positive voltage
• Body control module (bcm) (below left side side of dash)
• Brake pedal position sensor (above brake pedal assembly)
• Brk pos sens sig
• Center high mounted stop lamp
• Chmsl resistor
• Class 2 ser data
• Computer data lines system
• G100 (right side of eng compt, on upper front of radiator support)
• G101 (left side of eng compt, on upper front of radiator support)
• G200 (on right side of dash support beam, above dash compt)
• G302
• Hazard sw sig
• Head
• Headlight switch
• Hot at all times
• I/p fuse block (right side of dash)
• Left front marker lamp
• Left front park/ turn signal lamp
• Lf trn sig vlt
• Low ref
• Lr stop/turn lmp vlt
• Lt trn sig sw
• Nca
• Off
• Park
• Park lamp relay 28
• Park/lamp fuse 20 10a
• Prk lmp rly ctrl
• Prk lmp sw on sig
• Rf trn sig vlt
• Right front marker lamp
• Right front park/ turn signal lamp
• Rr stop/turn lmp vlt
• Rt trn sig sw
• S100
• S101
• S102
• S103 (w/ late production only)
• S255
• S277
• S913
• Stop/ trn fuse 12 20a
• Tan
• Turn signal/ multifunction switch
• Underhood fuse block (above right front wheelwell)

Exterior Lamps Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• Cluster/ hvac fuse 8 10a
• Computer data lines system
• Early production
• Elc fuse 10a
• G200 (base of left "a" pillar)
• G200 (on lower left "d" pillar)
• G400 (on lower right "d" pillar)
• G401 (on lower left "d" pillar)
• Ground
• Hazard switch
• Hot at all times
• I/p fuse block (behind right side of dash)
• I/p multi- function switch
• Instrument panel cluster
• Ipc
• Ipc class 2 data
• Late production
• Left back-up lamp
• Left front turn lamp out left rear turn lamp out park lamps on right front turn lamp out right rear turn lamp out service park lamp turn turn signal on
• Left license lamps
• Left tail lamp
• Left tail/ stop & turn signal lamp
• Left turn sig ind
• Logic
• Right back-up lamp
• Right license lamps
• Right tail lamp
• Right tail/ stop & turn signal lamp
• Right turn sig ind
• S255
• S404 (c69, e58 or late prod.)
• S431
• S433
• S479 (in mobility seat base harn)
• S484 (in right taillamp, harn, 18 cm from c480)
• S900 (in liftgate harn, 16 cm from breakout for right license lamp toward rear window wiper motor)
• S911
• Tan

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 5) for Buick Terraza CXL 2005

List of elements for Ground Distribution Wiring Diagram (1 of 5) for Buick Terraza CXL 2005:

• A/c compressor clutch
• Automatic transmission
• Battery
• Body control module
• C175
• Diode 3
• Electronic brake control module
• Fan 2 relay
• Fuel pump relay
• G100 (right side of engine compt on upper front of radiator support)
• G101 (early production) (left side of engine compt on upper front of radiator support)
• G101 (late production) (left side of engine compt on upper front of radiator support)
• G102 (right side of engine compt on frame rail, right of engine fuse block)
• G113 (at engine to transmission stud above g115)
• G115 (at engine to transmission stud nearest starter, below g113)
• Hood ajar switch
• Ign main relay
• Ignition control module
• Internal mode switch
• Left front park/ turn signal lamp
• Left high beam headlamp
• Left horn
• Left low beam headlamp
• Left marker lamp
• Mass air flow/ intake air temperature sensor
• Powertrain control module
• Right cooling fan
• Right front park/ turn signal lamp
• Right high beam headlamp
• Right horn
• Right low beam headlamp
• Right marker lamp
• S100 (in right headlamp harness, 8 cm (3.1 in) from c104)
• S101 (in left headlamp harness, 8 cm (3.1 in) from c103)
• S102 (in forward lamp harness, 6.5 cm (2.6 in) from breakout for g100, toward c110)
• S103 (in forward lamp harness, 5 cm (2 in) from breakout for c103, toward left horn)
• S106 (in forward lamp harness, 10 cm (3.9 in) from breakout for c104 toward c110)
• S155 (in engine harness, 10 cm (3.9 in) from breakout for maf/iat sensor toward pcm)
• Throttle actuator control module
• Underhood fuse block

Ground Distribution Wiring Diagram (2 of 5) for Buick Terraza CXL 2005

List of elements for Ground Distribution Wiring Diagram (2 of 5) for Buick Terraza CXL 2005:

• A/t shift lock control solenoid
• A12
• Ambient light sensor
• Blower motor resistor assembly
• Body control module
• Brake fluid level switch
• C25
• C277
• C279
• Cigar lighter
• Data link connector
• Digital radio receiver
• Dvd player
• G200 (on right side of dash support beam, above dash compt)
• G201 (on left side of dash support beam, above bcm)
• Headlamp switch
• Hvac control module
• I/p fuse block
• I/p multifunction switch
• Ignition switch
• Inflatable restraint passenger airbag on/off indicator
• Inflatable restraint steering wheel module coil
• Instrument panel cluster
• Left steering wheel control switch assembly
• Nca
• Radio
• Rear window washer pump
• Remote control door lock receiver
• Right steering wheel control switch assembly
• S200 (in dash harness, 6.5 cm (2.6 in) from breakout for c204 toward g200)
• S246 (in dash harness, 12.5 cm (4.9 in) from breakout for recirculation actuator toward left side of dash)
• S255 (in dash harness, main bundle, 9 cm (3.5 in) from breakout for app sensor toward left side of dash)
• S259 (in dash harness, main bundle, 5 cm (2 in) from breakout for defrost actuator toward right side of dash)
• S277 (in steering column harness, 20 cm (7.9 in) from c201)
• Steering wheel
• Stop lamp relay
• Theft deterrent exciter module
• Theft light emitting diode
• Turn signal/ multifunction switch
• U42
• U42 or u56
• Ue1 or u3u
• Underhood fuse block
• Vehicle communication unit
• W/ uk3
• W/o uk3
• Windshield washer fluid pump
• Windshield wiper motor
• Wiper 1 relay
• Wiper 2 relay

Ground Distribution Wiring Diagram (3 of 5) for Buick Terraza CXL 2005

List of elements for Ground Distribution Wiring Diagram (3 of 5) for Buick Terraza CXL 2005:

• Accessory ac/dc power control module
• Ag0
• Ag1
• Body control module
• C69 or e58 or late production
• Differential clutch pump actuator valve check
• Driver back heated seat element
• Driver door key switch
• Driver door latch assembly
• Driver door lock switch
• Driver heated seat relay
• Driver memory seat module
• Driver outside rearview mirror
• Driver seat adjuster switch
• Driver window switch
• E58
• E59
• E59 w/early prod
• Early prod w/o c69 or e58
• Fuel pump
• Fuel pump & sender assembly
• G301 (on lower left "b" pillar)
• G400 (on lower right "d" pillar)
• Ka1
• Kc7 w/e58
• Kc7 w/o e58
• Late production
• Left door contact plate
• Left license lamp
• Left seat belt switch
• Left sliding door detent switch
• Left sliding door jamb switch
• Left sliding door open/close switch
• Left sliding door unlatch actuator
• Liftgate door jamb switch
• M76
• Manual seat
• Memory seat switch
• Nca
• Outside rearview mirror switch
• Power seat
• Rear auxililary power outlet
• Rear window defogger grid
• Rear window wiper motor
• Right backup lamp
• Right license lamp
• Right sliding door module
• Right tail lamp
• Right tail/ stop & turn signal lamp
• S331 (in body harness, 6.5 cm (2.6 in) from breakout for left side impact sensor toward left seat belt pretensioner)
• S351 (in driver seat harness, 6.5 cm (2.6 in) from breakout for seat belt switch toward seat heater relay)
• S404 (in body harness, 6.5 cm (2.6 in) from breakout for c480 toward right power sliding door module)
• S555 (in driver door harness, 10 cm (3.9 in) from breakout for driver window switch)
• S751 (in left sliding door harness, 12 cm (4.7 in) from breakout left middle door lock actuator toward rear of door)
• S911 (in liftgate harness, 6.5 cm (2.6 in) from breakout for left license lamp toward right license lamp)
• W/ e59

Ground Distribution Wiring Diagram (4 of 5) for Buick Terraza CXL 2005

List of elements for Ground Distribution Wiring Diagram (4 of 5) for Buick Terraza CXL 2005:

• (in passenger door harness, 10 cm (3.9 in) from breakout for passenger window switch) s666
• Ag2
• Cargo lamp
• Center courtesy/ reading lamp
• Center high mounted stop lamp
• Chmsl resistor
• E58
• E58 w/early production
• Early prod w/o e58
• Front courtesy/ reading lamp
• G302 (on lower right "b" pillar)
• Garage door opener
• Ka1
• Late prod or e58
• Late production
• Left roof rail reading lamp
• Left vanity mirror lamp
• Lift lower limit switch
• Lift upper limit switch
• Manual seat
• Nca
• Overhead console multifunction switch
• Passenger back heated seat relay
• Passenger door latch assembly
• Passenger door lock switch
• Passenger heated seat relay
• Passenger outside rearview mirror
• Passenger seat adjuster switch
• Passenger window switch
• Power seat
• Rear object sensor control module
• Right door contact plate
• Right roof rail reading lamp
• Right seat belt switch
• Right sliding door detent switch
• Right sliding door jamb switch
• Right sliding door open/close switch
• Right sliding door unlatch actuator
• Right vanity mirror lamp
• S320
• S340 (in passenger seat harness, 27 cm (10.6 in) from breakout for seat belt switch toward seat heater relay)
• S366 (in mobility seat interface harness, 10 cm (3.9 in) from right sliding door jamb switch)
• S379 (in mobility seat base harness)
• S380 (in headliner harness, 6.5 cm (2.6 in) from breakout for c308 toward center courtesy/reading lamp)
• S388 (in headliner harness, 6.5 cm (2.6 in) from breakout for right sunshade toward left sunshade)
• S848 (in right sliding door harness, 12 cm (4.7 in) from breakout right middle door lock actuator toward rear of door)
• S913 (in liftgate harness, 26.5 cm (10.4 in) from chmsl)
• Sit-n-lift seat ignition relay
• Sit-n-lift seat module
• Splice pack sp370 (in mobility seat base harness)
• Splice pack sp372 (in mobility seat base harness)
• Swivel inside limit switch
• Swivel motor
• Swivel outside limit switch
• Ud7 w/late prod
• Ug1
• W/ aqw
• W/ e58
• W/o aqw
• W/o e58

Ground Distribution Wiring Diagram (5 of 5) for Buick Terraza CXL 2005

List of elements for Ground Distribution Wiring Diagram (5 of 5) for Buick Terraza CXL 2005:

• Automatic level control compressor
• Automatic level control sensor
• Auxiliary blower motor control module
• C69
• C69 or early production w/ud7
• C69 or ud7
• Center high mounted stop lamp
• Chmsl resistor
• E59
• Early production
• Early production w/ud7
• G302 (on lower right "b" pillar)
• G401 (on lower left "d" pillar)
• Inflatable restraint front passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Left backup lamp
• Left license lamp
• Left sliding door module
• Left tail lamp
• Left tail/ stop & turn signal lamp
• Liftgate door jamb switch
• Nca
• Rear object sensor control module
• Rear window defogger grid
• Rear window wiper motor
• Right license lamp
• S413 (in body harness, 6.5 cm (2.6 in) from breakout for c479 toward left "c" pillar)
• S431 (in alc jumper harness, inside vehicle, 24 cm (9.4 in) from pass-through)
• Toward right license lamp)
• V92
• W/o c69 or early production w/o ud7
• W/o c69 or w/o ud7

HEADLIGHTS

Headlights Wiring Diagram for Buick Terraza CXL 2005

List of elements for Headlights Wiring Diagram for Buick Terraza CXL 2005:

• (above right front wheelwell) underhood fuse block
• Ambient light sensor (center of dash upper trim panel)
• Auto
• Body control module (bcm) (below left side of dash)
• Class 2 ser data
• Class 2 serial data
• Computer data lines system
• Dimmer switch hi bm sig
• Drl amb lt sens sig
• Exterior lights system
• Flash to pass signal
• Ftp
• G100 (right side of eng compt, upper front of radiator support)
• G101 (left side of eng compt, upper front of radiator support)
• G200 (right side of dash support beam, above dash compt)
• Head
• Headlamp switch
• Headlamps off signal
• Headlamps on signal
• Headlamps suggested
• Hi beam relay
• High
• High beam ind
• High beam relay control
• Hot at all times
• Instrument panel cluster (ipc)
• Left front park/turn signal lamp
• Left high beam headlamp
• Left low beam headlamp
• Lf turn sig lmp sply volt
• Lh hi beam fuse 4 10a
• Lh lo beam fuse 8 10a
• Lo beam relay
• Logic
• Low beam relay control
• Message center
• Off
• Park
• Rf turn sig lmp sply volt
• Rh hi beam fuse 1 10a
• Rh lo beam fuse 12 10a
• Right front park/turn signal lamp
• Right high beam headlamp
• Right low beam headlamp
• S100
• S101
• S102
• S103
• S255
• S277
• Turn signal/ multifunction switch

HORN

Horn Wiring Diagram for Buick Terraza CXL 2005

List of elements for Horn Wiring Diagram for Buick Terraza CXL 2005:

• (in forward lamp harness,13 cm from breakout for g100)
• Body control module (bcm) (below left side of dash)
• C13
• C277
• C279
• Cruise
• G100 (on right side of engine compartment front of radiator support)
• G101 (on left side of engine compartment front of radiator support)
• G201 (left side of dash support beam above bcm)
• H b
• Horn fuse 7 15a
• Horn relay
• Horn relay ctrl
• Horn switch
• Hot at all times
• Inflatable restraint steering wheel module coil
• Left horn (below left headlight)
• Nca
• Right horn (below right headlight)
• S104
• Steering wheel
• Tan
• Underhood fuse block (above right front wheelwell)
• W/electronic cruise w/o electronic

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (on right side of dash support beam, above dash compt)
• Abs indicator
• Air bag indicator
• Ambient air temp sens sig
• Ambient air temperature sensor (at left radiator support)
• Bat pos voltage
• Brake indicator
• Brk fluid lvl sens sig
• Charging system indicator
• Chime
• Class 2 serial data
• Clstr/ hvac fuse 10a
• Computer data lines system
• Cruise control on indicator
• Dic info dn sig
• Dic info up sig
• Dic menu sig
• Dic set/reset sw sig
• Engine controls system
• Engine coolant temperature gauge
• Fuel gage
• G200
• Gnd
• High beam indicator
• Hot at all times
• Hot coolant indicator
• I/p fuse block (right side of dash)
• Ign 1 voltage
• Illumination
• Inflatable restraint passenger air bag on/off indicator
• Instrument panel cluster (ipc)
• Interior lights system
• Left turn indicator
• Logic
• Low fuel indicator
• Low oil pressure indicator
• Low ref
• Malfunction indicator
• Message center
• Odo/trip
• Pass seat belt ind
• Pnk
• Prnd321
• Red
• Right turn indicator
• S255
• Seat belt indicator
• Security indicator
• Sens sig
• Speedometer
• Tachometer
• Traction control off indicator

Instrument Cluster Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• Brake fluid level switch (master cylinder fluid reservoir)
• G200 (right side of dash support beam, above dash compt)
• I/p multifunction switch
• Info dn
• Info up
• Menu
• Pnk
• Reset or english/ metric
• S255

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram for Buick Terraza CXL 2005

List of elements for Courtesy Lamps Wiring Diagram for Buick Terraza CXL 2005:

• (early prod) a
• (in headliner harness) s368
• (in headliner harness) s382
• (late prod) b
• A c2
• Battery b+
• Body control module (bcm) (below left side of dash, left of steering column)
• C2 d
• Cargo lamp
• Center courtesy/ reading lamp
• Courtesy high ctrl
• Ctsy defeat
• Ctsy lamps sw off
• Ctsy lamps sw on
• Ctsy on
• D c2
• Driver door latch assembly
• Early production
• Front courtesy/ reading lamp
• G200 (right side of dash support beam)
• G301 (lower left "b" pillar)
• G302 (lower right "b" pillar)
• G400 (late prod) (lower right "d" pillar)
• G401 (early prod) (lower left "d" pillar)
• Headlamp switch
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Inadvertent power
• Int/ lamp fuse 5 10a
• Late production
• Left roof rail reading lamp
• Left sliding door jamb switch
• Left vanity mirror lamp
• Lf door open sw
• Liftgate door jamb switch
• Liftgate open sw
• Lr door open sw
• Passenger door latch assembly
• Rf door open sw
• Right roof rail reading lamp
• Right sliding door jamb switch
• Right vanity mirror lamp
• Rr door open sw
• S255
• S320
• S331
• S380
• S388
• S555
• S666
• S911
• Sit-n- lift seat diode 3
• Tan
• W/ sit- n-lift
• W/o sit- n-lift

Instrument Illumination Wiring Diagram for Buick Terraza CXL 2005

List of elements for Instrument Illumination Wiring Diagram for Buick Terraza CXL 2005:

• (in dash harn, 15.5 cm from right vent & floor actuator breakout) s251
• (in driver door harn) s551
• (in passenger door harn) s660
• (in steering wheel harn) s295
• A c1
• A c2
• Auto
• B c1
• B c2
• B4 c1
• B5 c1
• Battery b+
• Body control module (bcm) (below left side of dash, left of steering column)
• C1 j
• C1 k
• C277 c
• C279 c
• Dimmer
• Dimmer low ref
• Dimming voltage ref
• Driver door lock switch
• Driver window switch
• G200 (right side of dash support beam)
• G201 (left side of dash support beam)
• G301 (lower left "b" pillar)
• G302 (lower right "b" pillar)
• Garage door opener (if equipped)
• Head
• Headlamp switch
• Hot at all times
• Hvac control module
• I/p dimming ctrl
• I/p fuse block (right side of dash, behind access panel)
• I/p multi- function switch
• Illum
• Inflatable restraint steering wheel module coil
• Instrument panel cluster (ipc)
• Int/ lamp fuse 5 10a
• Left sliding door open/ close switch (if equipped)
• Left steering wheel control switch assembly
• Memory seat switch
• Off
• Outside rearview mirror switch
• Overhead console multifunction switch
• Park
• Park lamps on
• Passenger door lock switch
• Passenger window switch
• Pnk
• Radio
• Right sliding door open/ close switch
• Right steering wheel control switch assembly
• S246
• S255
• S257 (in dash harn, 8.5 cm from ipc breakout)
• S293
• S315 (in body harn, 18.5 cm from c313 breakout)
• S331
• S380
• S384 (in headliner harness)
• S388
• S555
• S666
• Starting/ charging system
• Strg whl illum fuse 10 5a
• W/ sliding door
• W/o sliding door

MEMORY SYSTEMS

Memory Systems Wiring Diagram for Buick Terraza CXL 2005

List of elements for Memory Systems Wiring Diagram for Buick Terraza CXL 2005:

• (4.5 cm from breakout for seat belt sw toward memory seat module) s353
• (lower left "b" pillar)
• 25a
• 5v ref
• A10
• A11
• A12
• B10
• B11
• B12
• Back
• Batt (high current)
• Class 2 serial data
• Computer data lines system
• Driver
• Driver memory seat module (under driver seat)
• Driver seat adjuster motor assembly
• Driver seat adjuster switch
• Driver seat recline motor
• Exit
• Front down
• Front up
• Front vert down
• Front vert down ctrl
• Front vert up
• Front vert up ctrl
• Front vertical motor
• Frt vert pos sens
• Fwd
• G301
• G301 (on lower left "b" pillar)
• Ground
• H (not used)
• Horizontal motor
• Horizontal pos sens
• Horz fwd
• Horz fwd ctrl
• Horz rwd
• Horz rwd ctrl
• Hot at all times
• I/p fuse block (right side dash, behind access panel)
• Interior lights system
• Low ref
• Memory 1
• Memory 2
• Memory seat switch
• Nca
• Pwr seats circuit breaker
• Rear down
• Rear up
• Rear vert down
• Rear vert down ctrl
• Rear vert pos sens
• Rear vert up
• Rear vert up ctrl
• Rear vertical motor
• Recline back
• Recline fwd
• Recline fwd ctrl
• Recline pos sens
• Recline rwd
• Recline rwd ctrl
• S351
• S357 (20.5 cm from breakout for seat adjuster toward memory seat module)
• S555
• Tan
• Voltage ref

NAVIGATION

Parking Assistant Wiring Diagram for Buick Terraza CXL 2005

List of elements for Parking Assistant Wiring Diagram for Buick Terraza CXL 2005:

• Backup lamp sply voltage
• Body control module (behind left side of dash, left of steering column)
• Center amber ind
• Center amber ind ctrl
• Exterior lights & mirrors systems
• G302 (lower right "b" pillar)
• Ground
• Hot in run & start
• Hvac/rpa/ cruise fuse 17 10a
• I/p fuse block (right side of dash, behind access panel)
• Ign 1 voltage
• Left amber ind
• Left amber ind ctrl
• Left rear corner object sensor (left corner of rear bumper)
• Left rear middle object sensor (left middle of rear bumper)
• Low reference
• Lr corner object sens sig
• Lr middle object sens sig
• Object sens low ref
• Object sens sply voltage
• Park assist disable sw
• Park assist disable switch (part of overhead console multi- function switch)
• Pnk
• Powertrain control module (pcm) (left side of engine compt, in the air cleaner assembly)
• Rear object sensor control module (center of rear package shelf)
• Rear parking assist (rpa) diagnostic connector (left side of trunk)
• Rear parking assist (rpa) display
• Rear parking assist chime
• Rear parking assist chime sig
• Rear parking diagnostic sig
• Red ind
• Red ind crtl
• Right rear corner object sensor (right corner of rear bumper)
• Right rear middle object sensor (right middle of rear bumper)
• Rr corner object sens sig
• Rr middle object sens sig
• S317 (in body harn, 23.5 cm from breakout for c313 toward rear of vehicle)
• S320
• S388
• S480 (in rear parking assist harn)
• S482 (in rear parking assist harn)
• Sensor signal
• Telltale assembly sply voltage
• Throttle actuator control (tac) module (left side of intake)
• Underhood fuse block (above right front wheelwell)
• Vehicle speed sig
• Vss sig

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 4) for Buick Terraza CXL 2005

List of elements for Power Distribution Wiring Diagram (1 of 4) for Buick Terraza CXL 2005:

• (diagram 1 of 4)
• 12 volt reference
• A/c cltch fuse 10a
• A/c cltch relay
• Abs motor fuse 60a
• Acc
• Batt main 1 fuse 40a (early production, no information available)
• Batt main 2 fuse 60a
• Batt main 3 fuse 60a
• Battery
• Blower motor resistor assembly
• Body control module
• Crank voltage
• Electronic brake control module
• Fan 1 fuse 15a
• Fan 1 relay
• Fan 2 fuse 40a
• Fan 2 relay
• Fan 3 relay
• From batt main 3 fuse b
• From horn fuse c
• Frt blwr hi fuse 40a
• Frt wiper fuse 25a
• Frt wsw fuse 15a
• Fuel pump fuse 15a
• Fuel pump relay
• Generator
• Hi beam relay
• Horn fuse 15a
• Horn relay
• Ignition switch
• Ignition voltage
• Ip fuse block
• Lo beam relay
• Lock
• Pcm etc fuse 15a
• Pnk
• Powertrain control module
• Pwr/trn relay
• Red
• Rr defog fuse 40a
• Rr defog relay
• Run
• Run rly relay
• S135
• S160
• S279 (in steering column harness, 20 cm (7.9 in) from c201)
• Start
• Starter
• Strtr sol fuse 40a
• To 115 vac auxiliary power outlet (diagram 2 of 4)
• To aux/pwr 12vdc fuse (diagram 2 of 4)
• To fan 1 fuse (diagram 1 of 4)
• To frt wsw fuse (diagram 1 of 4)
• To ip fuse block (diagram 3 of 4)
• To ip fuse block (diagram 4 of 4)
• Underhood fuse block
• Wpr 1 relay

Power Distribution Wiring Diagram (2 of 4) for Buick Terraza CXL 2005

List of elements for Power Distribution Wiring Diagram (2 of 4) for Buick Terraza CXL 2005:

• (diagram 1 of 4)
• (diagram 2 of 4)
• (in mobility seat base harness)
• (not used)
• 1-2 shift solenoid (1-2 ss valve)
• 115 vac auxiliary power outlet
• 2-3 shift solenoid (2-3 ss valve)
• A10
• Abs fuse 10a
• Ac/cltch relay
• Ac/dc invrtr fuse 25a
• Accessory ac/dc power control module (behind right rear interior body panel)
• Airbag fuse 10a
• Apo neutral
• Apo phase a
• Automatic transmission
• Aux/pwr 12vdc fuse 25a
• Batt +
• Body control module
• C175
• C277
• C279
• Cigar lighter
• Crank relay
• Cruise control lever
• Cruise/switch fuse 2a
• Electronic brake control module
• From ac/dc invtr fuse e
• From rr defog fuse d
• From splice 273 (diagram 1 of 4)
• G113 (at engine to transmission stud above g115)
• G200 (on right side of dash support beam, above dash compt)
• G301 (on lower left "b" pillar)
• G400 (on lower right "d" pillar)
• Ground
• Hvac control module
• Hvac/rpa/ cruise fuse 10a
• Ignition main relay
• Inflatable restraint front passenger presence system module
• Inflatable restraint passenger airbag on/off indicator
• Inflatable restraint sensing & diagnostic module
• Inflatable restraint steering wheel coil module
• Invtr ctrl
• Ip fuse block
• Kc7
• Nca
• Pcm ign fuse 10a
• Plug inserted switch
• Pnk
• Powertrain control module
• Rear auxiliary power outlet
• Rear object sensor control module
• Red
• Red s171
• S106
• S175 (in engine harness, 59 cm (23.2 in) from engine fuse block)
• S246
• S307
• S331
• S373
• S374
• S404 (w/o e58)
• Sit-n-lift seat/ ignition relay
• Sit-n-lift seat/brake transmission shift interlock relay
• Spare fuse
• To ignition main relay (diagram 2 or 4)
• Torque converter clutch (tcc) solenoid valve
• Trans sols fuse 10a
• Ud7
• Underhood fuse block
• W/ aqw
• W/o aqw

Power Distribution Wiring Diagram (3 of 4) for Buick Terraza CXL 2005

List of elements for Power Distribution Wiring Diagram (3 of 4) for Buick Terraza CXL 2005:

• (in mobility seat base harness) s372
• (in mobility seat base harness) s376
• Ag0
• Ag1
• Ag2 or ah8
• Ag2 or ah8 w/o aqw
• Body control module
• Chmsl bck/up fuse 15a
• Clstr/ hvac fuse 10a
• Cluster instrument panel
• Cnstr/ vent fuse 10a
• Data link connector
• Digital radio receiver
• Driver heated seat relay
• Driver memory seat module
• Driver seat adjuster switch
• Dvd player
• E58
• E59
• E59 or e58
• Evaporative emission canister vent solenoid valve
• From batt main 2 fuse (diagram 1 of 4)
• From s160 (diagram 1 or 4)
• Fuse 25a
• Fuse 3a
• Garage door opener
• Htd/ seats fuse 20a
• Hvac control module
• Int/ lamp fuse 10a
• Ip fuse block
• Left sliding door module
• Lh-psd fuse 40a
• Onstar fuse 10a
• Outside rearview mirror switch
• Park lamp relay
• Park/lamp fuse 10a
• Passenger heated seat relay
• Passenger seat adjuster switch
• Psd fuse 15a
• Pwr seats circuit breaker 25a
• Pwr/ mir fuse 10a
• Radio
• Radio amp fuse 20a
• Red
• Remote control door lock receiver
• Rfa mdls fuse 10a
• Rh-psd fuse 40a
• Right sliding door module
• S339 (in body harness, 109.2 cm (43 in) from dvd player)
• S361 (in mobility seat interface harness, 52 cm (20.5 in) from breakout for c314)
• S370 (in mobility red
• S411 (in body harness, 6 cm (2.4 in) from breakout for left tweeter speaker toward left sliding door module)
• Seat base harness)
• Sit-n- lift circuit breaker 8a
• Sit-n- lift seat fuse block
• Sit-n-lift seat module
• Sit-n-lift seat/door jamb switch relay
• Stop/ trn fuse 20a
• U2k
• U42
• Ue1
• Ug1
• Vehicle communication unit
• W/ aqw

Power Distribution Wiring Diagram (4 of 4) for Buick Terraza CXL 2005

List of elements for Power Distribution Wiring Diagram (4 of 4) for Buick Terraza CXL 2005:

• (in alc jumper harness, inside vehicle, 16 cm (6.3 in) from pass-through) s433
• (not used)
• Automatic level control compressor
• Automatic level control inflator air switch
• Automatic level control sensor
• Automatic level control solenoid valve
• Body control module
• Driver window switch
• Elc fuse 20a
• Elc fuse 25a
• From batt main 3 fuse (diagram 1 of 4)
• G67
• Ip fuse block
• Overhead console multifunction switch
• Passenger window switch
• Pwr wndw circuit breaker 25a
• Rap relay
• Rear window washer fluid pump relay
• Rear window wiper motor
• Rr wpr fuse 15a
• S204 (in dash harness, 10 cm (3.9 in) from breakout for c204 toward dash fuse block)
• S300 (in body harness, 20 cm (7.9 in) from breakout for passenger seat belt retractor toward c204)
• S415 (in body harness, 5 cm (2 in) from breakout for c405 toward c479)
• Spare fuse
• Trunk/lks fuse 15a
• V92
• W/ inflator

POWER MIRRORS

Power Mirrors Wiring Diagram for Buick Terraza CXL 2005

List of elements for Power Mirrors Wiring Diagram for Buick Terraza CXL 2005:

• (on lower left "b" pillar) g301
• Defogger system
• Down
• Down/ left common
• Driver outside rearview mirror
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Left
• Nca
• Outside rearview mirror switch
• Passenger outside rearview mirror
• Pwr mir fuse 11 10a
• Right
• S555
• Up/ right common

POWER SEATS

Driver Seat Wiring Diagram for Buick Terraza CXL 2005

List of elements for Driver Seat Wiring Diagram for Buick Terraza CXL 2005:

• Bck
• Driver seat adjuster motor assembly
• Driver seat adjuster switch
• Front dn
• Front up
• Front vertical motor
• Fwd
• G302 (on lower left "b" pillar)
• Horizontal motor
• Hot at all times
• I/p fuse block
• Nca
• Pwr seats circuit breaker 25a
• Rear dn
• Rear up
• Rear vertical motor
• S351
• Tan

Heated Seats Wiring Diagram for Buick Terraza CXL 2005

List of elements for Heated Seats Wiring Diagram for Buick Terraza CXL 2005:

• Body control module (behind left side of dash, left of steering column)
• C2 e9
• Class 2 serial data
• Data link connector (below left side of dash)
• Driver heated seat back element
• Driver heated seat cushion element
• Driver heated seat high indicator
• Driver heated seat low indicator
• Driver heated seat relay (under driver's seat)
• Driver heated seat switch
• Element
• Front passenger heated seat back element
• Front passenger heated seat cushion element
• Front passenger heated seat high indicator
• Front passenger heated seat low indicator
• Front passenger heated seat relay (under passenger's seat)
• Front passenger heated seat switch
• G301 (on lower left "b" pillar)
• G302 (on lower right "b" pillar)
• Heated
• Heated seat element
• Heated seat thermistor
• High req
• Hot at all times
• Htd seats fuse 20a
• Hvac control module
• I/p fuse block (right side of dash, behind access panel)
• Logic
• Low ref
• Low reference
• Low req
• Nca
• Pnk
• Rly ctrl
• S340
• S351
• Seat
• Sensor sig
• Sp205 (on dash harness near headlamp switch connector, behind left dash access panel)
• Tan
• Thermistor
• W/ sit-n-lift rear seat

Passenger Full Feature Seat Wiring Diagram for Buick Terraza CXL 2005

List of elements for Passenger Full Feature Seat Wiring Diagram for Buick Terraza CXL 2005:

• Bck
• Front dn
• Front up
• Front vertical motor
• Fwd
• G302 (on lower right "b" pillar)
• Horizontal motor
• Hot at all times
• I/p fuse block
• Nca
• Passenger seat adjuster motor assembly
• Passenger seat adjuster switch
• Passenger seat recline motor
• Pwr seats circuit breaker 25a
• Rear dn
• Rear up
• Rear vertical motor
• Rec bck
• Rec fwd
• S340
• S361 (w/ sit- n-lift)
• Tan

Passenger Seat Wiring Diagram for Buick Terraza CXL 2005

List of elements for Passenger Seat Wiring Diagram for Buick Terraza CXL 2005:

• Bck
• Front dn
• Front up
• Front vertical motor
• Fwd
• G302 (on lower right "b" pillar)
• Horizontal motor
• Hot at all times
• I/p fuse block
• Nca
• Passenger seat adjuster motor assembly
• Passenger seat adjuster switch
• Pwr seats circuit breaker 25a
• Rear dn
• Rear up
• Rear vertical motor
• S340
• S361 (w/ sit- n-lift)
• Tan

Sit-N-Lift Seat Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Sit-N-Lift Seat Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (in sit-n-lift seat base)
• (in sit-n-lift seatbase)
• Aj08
• Aj09
• Aje1
• Aje2
• As01
• As04
• As05
• As06
• As07
• As14
• As16
• As17
• As19
• As20
• As21
• As28
• As29
• As30
• As36
• Battery
• Circuit breaker 8a
• Encoder
• Fuse 1 25a
• Fuse 2 3a
• G302 (on lower right "b" pillar)
• Ground
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Ignition signal
• Lift inside limit switch
• Lift lower limit switch
• Lift lwr limit sw sig
• Lift mtr dn ctrl
• Lift mtr up ctrl
• Lift upper limit switch (in sit-n-lift seatbase)
• Lift uppr limit sw sig
• Nca
• Park sw sig
• Pwr seats circuit breaker 25a
• Red
• Remote dwn sw sig
• Remote up sw sig
• Rr dr open sw sig
• S361
• S370
• S372
• S379
• Shift intrlck rly ctrl
• Sit-n-lift seat circuit breaker
• Sit-n-lift seat fuse block
• Sit-n-lift seat lift motor
• Sit-n-lift seat module (in sit-n-lift seat base)
• Splice pack sp370 (in mobility seat base harness)
• Splice pack sp372 (in mobility seat base harness)
• Swivel in limit sw sig
• Swivel motor
• Swivel mtr ctrl
• Swivel out limit sw sig
• Swivel outside limit switch
• Swvl mtr hall sen sig
• Swvl mtr hall sen vlt
• V02

Sit-N-Lift Seat Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Sit-N-Lift Seat Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• (in sit-n-lift seat base) sit-n-lift seat/ brake transmission shift interlock relay
• (in sit-n-lift seat base) sit-n-lift seat/ ignition relay
• (in sit-n-lift seat base) sit-n-lift seat/door jamb switch relay
• A/t shift lock control solenoid
• Body control module (below left side of dash, left of steering column)
• G302 (on lower right "b" pillar)
• Gnd
• Hot in on or start
• Hvac/rpa/ cruise fuse 10a
• I/p fuse block (right c2 side of dash, behind access panel)
• Pnk
• Pnp switch sig
• Power windows system
• Red
• Right sliding door jamb switch (on lower right "c" pillar)
• Rr door open sig
• S364 (in mobility seat interface harness, 8 cm from breakout for c219)
• S366
• S373 (in mobility seat base red harness)
• S374 (in mobility seat base harness)
• S375 (in mobility seat base harness)
• S376 (in mobility seat base harness)
• S377 (in mobility seat base harness)
• S378 (in mobility seat base harness)
• Shift lock solenoid
• Sit-n-lift seat diode 1 (in sit-n-lift seat base harness)
• Sit-n-lift seat diode 2 (in sit-n-lift seat base harness)
• Sit-n-lift seat diode 3 (in sit-n-lift seat base harness)
• Sit-n-lift seat remote
• Splice pack sp370 (in mobility seat base harness)
• Underhood fuse block (above right front wheel well)

POWER WINDOWS

Power Windows Wiring Diagram for Buick Terraza CXL 2005

List of elements for Power Windows Wiring Diagram for Buick Terraza CXL 2005:

• (lower left "b" pillar) g301
• Block (right side of dash, behind access panel)
• Down
• Driver switch
• Driver window motor
• Driver window switch
• Express down
• Express logic
• Hot in run or rap
• I/p fuse
• Interior lights system
• Passenger switch
• Passenger window motor
• Passenger window switch
• Pwr wndw circuit breaker 25a
• S302
• S555
• Tan

Rear Quarter Windows Wiring Diagram for Buick Terraza CXL 2005

List of elements for Rear Quarter Windows Wiring Diagram for Buick Terraza CXL 2005:

• Close
• Elc fuse 2 20a
• G302 (on lower right "b" pillar)
• Hot w/ rap relay 29 energized
• I/p fuse block (right side of dash, behind access panel)
• Left rear quarter window actuator
• Open
• Overhead console multifunction switch
• Right rear quarter window actuator
• S300
• S388
• Tan

RADIO

Radio Wiring Diagram, with Rear Entertainment for Buick Terraza CXL 2005

List of elements for Radio Wiring Diagram, with Rear Entertainment for Buick Terraza CXL 2005:

• (in body harn, 10 cm from breakout for right tweeter toward rear object sensor control module)
• (in body harn, 5 cm from breakout for right tweeter toward rear object sensor control module)
• (in body harn, main bundle, 10 cm from breakout for branch to dvd player toward c301)
• (in body harn, main bundle, 5 cm from breakout for branch to dvd player toward c301)
• 1270 ohms
• 715 ohms
• A10
• A11
• A12
• Am/fm
• Am/fm antenna in
• Audio common
• Audio common sig
• B nca
• B10
• B11
• B12
• Bare
• Battery
• Class 2 ser data
• Class 2 serial data
• Coax
• Computer data lines system
• Ctrl sig
• D nca
• Digital video disc (dvd) player
• Drain wire
• Engine controls system
• G201 (on left side of dash support beam, above bcm)
• Gps antenna
• Gps antenna in
• Ground
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Inflatable restraint steering wheel module coil (in steering column)
• L audio sig (+)
• Left front speaker
• Left rear speaker
• Left rear tweeter speaker
• Left steering wheel control switch assembly
• Lf speaker output (+)
• Lf speaker output (-)
• Lr low level sig (+)
• Lr low level sig (-)
• Lr speaker output (+)
• Lr speaker output (-)
• Lr spkr out (+)
• Lr spkr out (-)
• Mute
• Nca
• Ohms
• Play
• R audio sig (+)
• Radio
• Radio amp fuse 4 20a
• Radio antenna
• Rem pb dev aud commn
• Rem pb dev lt aud sig
• Rem pb dev rt aud sig
• Rem pb device audio common sig
• Rem pb device h
• Rem pb device j
• Rem pb device k
• Rem pb device l audio sig (+)
• Rf speaker output (+)
• Rf speaker output (-)
• Right front speaker
• Right rear speaker
• Right rear tweeter speaker
• Right steering wheel control switch assembly
• Rr low level sig (+)
• Rr low level sig (-)
• Rr speaker output (+)
• Rr speaker output (-)
• Rr spkr out (+)
• Rr spkr out (-)
• S259
• S297 (in steering wheel harn, 15 cm from right steering wheel control switch assembly)
• S333
• S335
• S400
• S402
• Satellite radio circuit
• Seek down
• Seek up
• Set
• Tan
• Vehicle communication unit (vcu) (if equipped) (behind upper left side of dash, to left of steering column)
• Vol down
• Vol up
• Vss

Radio Wiring Diagram, without Rear Entertainment for Buick Terraza CXL 2005

List of elements for Radio Wiring Diagram, without Rear Entertainment for Buick Terraza CXL 2005:

• (in body harn, 10 cm from breakout for right tweeter toward rear object sensor control module)
• (in body harn, 5 cm from breakout for right tweeter toward rear object sensor control module)
• (in body harn, main bundle, 10 cm from breakout for branch to dvd player toward c301)
• (in body harn, main bundle, 5 cm from breakout for branch to dvd player toward c301)
• 1270 ohms
• 715 ohms
• A10
• A11
• A12
• Am/fm
• Am/fm antenna in
• Audio common
• Audio common sig
• B nca
• B10
• B11
• B12
• Bare
• Battery
• Class 2 serial data
• Coax
• Computer data lines system
• Ctrl sig
• D nca
• Drain wire
• Engine controls system
• G201 (on left side of dash support beam, above bcm)
• Gps antenna
• Gps antenna in
• Ground
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Inflatable restraint steering wheel module coil (in steering column)
• L audio sig (+)
• Left front speaker
• Left rear speaker
• Left rear tweeter speaker
• Left steering wheel control switch assembly
• Lf speaker output (+)
• Lf speaker output (-)
• Lr speaker output (+)
• Lr speaker output (-)
• Mute
• Nca
• Ohms
• Play
• R audio sig (+)
• Radio
• Radio amp fuse 4 20a
• Radio antenna
• Rf speaker output (+)
• Rf speaker output (-)
• Right front speaker
• Right rear speaker
• Right rear tweeter speaker
• Right steering wheel control switch assembly
• Rr speaker output (+)
• Rr speaker output (-)
• S259
• S297 (in steering wheel harn, 15 cm from right steering wheel control switch assembly)
• S333
• S335
• S400
• S402
• Satellite radio circuit
• Seek down
• Seek up
• Set
• Tan
• Vehicle communication unit (vcu) (if equipped) (behind upper left side of dash, to left of steering column)
• Vol down
• Vol up
• Vss

Satellite Radio Wiring Diagram for Buick Terraza CXL 2005

List of elements for Satellite Radio Wiring Diagram for Buick Terraza CXL 2005:

• Aud common
• Audio common
• Bare
• Battery
• Coax
• Computer data lines system
• Digital radio antenna
• Digital radio receiver (behind left side of dash)
• Digital video disc (dvd) player (if equipped)
• Drain wire
• G201 (on left side of dash support beam, above bcm)
• Ground
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• L aud sig (+)
• L audio sig (+)
• R aud sig (+)
• R audio sig (+)
• Radio
• Rfa mdls fuse 7 10a
• S259
• Satellite in
• Serial data
• Tan

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for Buick Terraza CXL 2005

List of elements for Shift Interlock Wiring Diagram for Buick Terraza CXL 2005:

• (behind left side of dash, left of steering column) body control module
• (under left side of dash) brake pedal position sensor
• 5 volt ref
• A/t shift lock control solenoid (center of console assembly)
• Automatic transaxle
• Battery positive voltage
• Class 2 serial data
• Class 2 serial data c1
• Computer data lines system
• E5 c1
• G113 (lower right front of engine, on transaxle stud, near starter)
• G200 (right side of dash cross beam)
• Hot at all times
• I/p fuse block (behind right side of dash, in glove box opening)
• Low ref
• Powertrain control module (left front side of engine compt, in air cleaner assembly)
• S101
• Seats system
• Sit and lift seat diode 1 (seat base harness)
• Stop lamp sw sig
• Switch sig a
• Switch sig b
• Switch sig c
• Switch sig p
• Transmission internal mode switch (ims)
• Turn/ haz fuse 20a
• W/ sit-n- lift seat
• W/o sit-n- lift seat

STARTING/CHARGING

Charging Wiring Diagram for Buick Terraza CXL 2005

List of elements for Charging Wiring Diagram for Buick Terraza CXL 2005:

• Battery
• Battery current sensor (right front of eng comt, near battery)
• Battery ind
• Body control module (bcm) (below left side of dash, left of steering column)
• Class 2 serial data
• Clstr/ hvac fuse 8 10a
• Computer data lines
• Current sens sig
• Current sensor
• G102 (right of eng fuse block)
• G115 (at eng to transmission stud nearest starter)
• Gen field duty cycle sign
• Gen turn on sig
• Generator
• Ground
• Hot at all times
• I/p dimming voltage ref
• I/p fuse block (right side of dash)
• Ign 1 volt
• Instrument panel cluster
• Interior light system
• Low ref
• Power distribution system
• Powertrain control module (on left front of eng compt, in air cleaner assembly)
• Red
• S257 (dash harn, 8.5 cm from breakout for ipc toward right side of dash)
• Sp205 (near headlamp switch connector, behind left dash, on dash harn)
• Starter motor
• Underhood fuse block (above right front wheelwell)

Starting Wiring Diagram for Buick Terraza CXL 2005

List of elements for Starting Wiring Diagram for Buick Terraza CXL 2005:

• -hood ajar -remote start disabled -remote start on -service remote start -starting disable
• 12-volt ref
• Acc
• Battery
• Body control module (bcm) (below left side of dash, left of steering column)
• Charging circuit
• Class 2 serial data
• Clstr/ hvac fuse 8 10a
• Crank voltage
• Crnk relay
• G100 (on left front frame body mount)
• G101 (left side of eng compt, on upper front of radiator support)
• G102 (at left front side of eng block)
• Ground distribution system
• Hold- in coil
• Hood ajar switch (upper center of radiator support, on hood latch)
• Hood ajar switch sig
• Hot at all times
• Hot in start or run
• I/p fuse block (right side of dash)
• Ign 1 volt
• Ignition 1 voltage
• Ignition switch
• Instrument panel cluster
• Off
• Pnk
• Power distribution system
• Powertrain control module (on left front of eng compt, in air cleaner assembly)
• Pull- in coil
• Red
• S103 (late production)
• S279 (in steering column, 20 cm from c201)
• Sp205 (near headlamp switch connector, behind left dash, on dash harn)
• Start
• Start enable rly ctrl
• Starter
• Strtr sol fuse 30 40a
• Underhood fuse block (in underhood compt, above right front wheelwell)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (lower right "b" panel)
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• C205
• C254
• C275
• C315
• Case ground
• G302
• Ground
• I/p stage 1 high
• I/p stage 1 low
• I/p stage 2 high
• I/p stage 2 low
• Ignition 1
• Inflatable restraint instrument panel (i/p) module (above dash compartment)
• Inflatable restraint sensing & diagnostic module (sdm) (under right front seat)
• Inflatable restraint steering wheel module (center hub of steering wheel)
• Inflatable restraint steering wheel module coil
• L discriminating sig
• L pretensioner high
• L pretensioner low
• L seat belt sw
• L side impact mod high
• L side impact mod low
• L side impact sig
• Left inflatable restraint front end sensor (on left radiator support)
• Left inflatable restraint side impact module (in left seat back)
• Left inflatable restraint side impact sensing module (left "b" pillar)
• Low ref
• Occupant serial data
• Pnk
• R discriminating sig
• R pretensioner high
• R pretensioner low
• R seat belt sw
• R side impact mod high
• R side impact mod low
• R side impact sig
• Right inflatable restraint front end sensor (on right radiator support)
• Right inflatable restraint side impact module (in right seat back)
• Right inflatable restraint side impact sensing module (right "b" pillar)
• Sdm serial data
• Shorting bar
• Shorting clip
• Stage 1
• Stage 2
• Steer whl stage 1 high
• Steer whl stage 1 low
• Steer whl stage 2 high
• Steer whl stage 2 low
• Tan
• W/ side imapct -

Supplemental Restraints Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• Air bag ind
• Air bag off
• Air bag on
• Airbag fuse 20 10a
• Airbag off ind ctrl
• Airbag on ind ctrl
• Belt tens 14v ref
• Class 2 (sdm)
• Class 2 serial data
• Data link connector (under left side of dash)
• Driver seat belt switch (in belt buckle)
• G200 (right side of dash support beam)
• G301 (lower left "b" pillar)
• G302 (lower right "b" pillar)
• Ground
• Hot in run & start
• Ignition 1 voltage
• Illum
• Inflatable restraint front passenger presence system (pps) module (under right front seat)
• Inflatable restraint front passenger presence system (pps) sensor (in seat cushion)
• Inflatable restraint passenger air bag on/off indicator
• Inflatable restraint passenger seat belt tension retractor sensor (in seat belt retractor assembly)
• Instrument panel cluster (ipc)
• Left front seat belt pretensioner (in seat belt retractor assembly)
• Message center
• Nca
• Occupant serial data
• Passenger seat belt indicator
• Passenger seat belt not fastened
• Passenger seat belt switch (in belt buckle)
• Pnk
• Power
• Pps sens 14v ref
• Pps sens lo ref
• Pps sens sig
• Right front seat belt pretensioner (in seat belt retractor assembly)
• S255
• S340 (w/ power seat)
• S351 (w/ power seat)
• Seat belt
• Seat belt ind
• Seat belt tens lo ref
• Seat belt tens sig
• Shorting bar
• Splice pack sp205 (behind left dash access panel)
• Underhood fuse block (above right front wheelwell)

TRANSMISSION

A/T Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for A/T Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (at engine to transmission stud above g115) g113
• (in dash harness,
• 1-2 shift sol
• 1-2 shift solenoid valve
• 15 cm (5.9 in) from breakout for c203 toward right side of dash) s273
• 2-3 shift sol
• 2-3 shift solenoid valve
• Acc
• At iss high sig
• At iss low sig
• Automatic transmission
• Automatic transmission fluid temperature sensor
• Automatic transmission input shaft speed sensor
• Battery
• Body control module (below left side of dash, left of steering column)
• Frt wsw fuse 15a
• Ground
• Hot at all times
• Ignition 1
• Ignition 3
• Ignition switch
• Lock
• Low ref
• Pc sol high
• Pc sol low
• Pnk
• Powertrain control module (left side of engine compt, in air cleaner assembly)
• Pressure control solenoid valve
• Range sw 3
• Range sw b
• Range sw p
• Red
• Run
• S155
• S279 (in steering column harness, 20 cm (7.9 in) from c201)
• Start
• Stop lamp sw
• Tan
• Tcc pwm sol
• Tcc release
• Tft sns sig
• Torque converter clutch release seat
• Torque converter clutch solenoid valve
• Trans range sw
• Underhood fuse block (above right front wheel well)
• Vss high sig
• Vss low sig

A/T Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for A/T Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• (at engine to transmission stud above g115) g113
• (mounted to right side of transmission) vehicle speed sensor
• Automatic transmission
• Engine controls system
• G113 (at engine to transmission stud above g115)
• Hot at all times
• I/p fuse block (right c1 side of dash)
• Ign main relay
• Internal mode switch
• Pcm etc fuse 15a
• Pcm ign fuse 10a
• Pnk
• S155
• S175
• Trans sol fuse 10a
• Underhood fuse block (above right front wheel well)

AWD Wiring Diagram for Buick Terraza CXL 2005

List of elements for AWD Wiring Diagram for Buick Terraza CXL 2005:

• (on lower left "b" pillar) g301
• All wheel drive disabled
• Axle act
• Computer data lines system
• Differential clutch pump actuator check valve
• Electronic brake control module (lower left side of engine compt, on left strut tower)
• Emis/ awd fuse 15a
• Ground
• Hot at all times
• Ignition 1
• Instrument panel cluster
• Logic
• Message center
• Pcm rly
• Pnk
• Powertrain control module (left side of engine compt, in air cleaner assembly)
• Pwr/ trn relay
• S331
• Serial data
• Underhood fuse block (above right front wheel well)

TRUNK, TAILGATE, FUEL DOOR

Right & Left Sliding Door Wiring Diagram (1 of 2) for Buick Terraza CXL 2005

List of elements for Right & Left Sliding Door Wiring Diagram (1 of 2) for Buick Terraza CXL 2005:

• (early prod) e
• (late prod) d
• (on lower left "d" pillar) g401
• (on lower right "d" pillar) g400
• (w/ left sliding electric) s411
• Battery positive voltage
• Cable motor
• Class 2 serial data
• Clutch
• Computer data lines system
• E (early prod)
• G301 (on lower left "b" pillar)
• G302 (on lower right "b" pillar)
• Ground
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Interior lights system
• Left sldg door open/close sw sig
• Left sliding door clutch ctrl
• Left sliding door detent sw sig
• Left sliding door enable sw sig
• Left sliding door latch mtr ctrl
• Left sliding door module (lsdm) (behind left rear interior body panel)
• Left sliding door motor assembly
• Left sliding door mtr close ctrl
• Left sliding door mtr open ctrl
• Left sliding door open/ close switch (on left "b" pillar)
• Left sliding door sens 1 sig
• Left sliding door sens 2 sig
• Left sliding door sens low ref
• Left sliding door sens volt ref
• Lh-psd fuse 24 40a
• Park/neutral position park sig
• Position sensor
• Psd fuse 21 15a
• Red
• Rh-psd fuse 25 40a
• Right sldg door open/close sw sig
• Right sliding door clutch ctrl
• Right sliding door detent sw sig
• Right sliding door enable sw sig
• Right sliding door latch mtr ctrl
• Right sliding door module (rsdm) (behind right rear interior body panel)
• Right sliding door mtr close ctrl
• Right sliding door mtr open ctrl
• Right sliding door open/ close switch (on right "b" pillar)
• Right sliding door sens 1 sig
• Right sliding door sens 2 sig
• Right sliding door sens low ref
• Right sliding door sens volt ref
• S331
• S380
• Tan

Right & Left Sliding Door Wiring Diagram (2 of 2) for Buick Terraza CXL 2005

List of elements for Right & Left Sliding Door Wiring Diagram (2 of 2) for Buick Terraza CXL 2005:

• (in dash harness, main bundle, 15.5 cm from breakout for vent & floor actuator toward right side of dash)
• (in right sliding door harness, 12 cm from breakout right middle door lock actuator toward rear of door)
• (on lower left "b" pillar)
• 8 cm from breakout for c219)
• Body control module (bcm) (below left side of dash, left of steering column)
• C1 b
• Cable motor
• Class 2 serial data
• Clutch
• Computer data lines system
• Driver sliding door in motion
• G301
• G302 (on lower right "b" pillar)
• Instrument panel cluster (ipc)
• Left door contact plate
• Left door disable
• Left door open/ close
• Left sliding door detent switch (inside left sliding door)
• Left sliding door unlatch actuator (inside left sliding door)
• Logic
• Message center
• Obstacle detected drvr sliding door
• Obstacle detected pass sliding door
• Overhead console multifunction switch
• Park signal
• Passenger sliding door in motion
• Position sensor
• Red
• Right door contact plate
• Right door enable
• Right door open/ close
• Right sliding door detent switch (inside right sliding door)
• Right sliding door motor assembly
• Right sliding door unlatch actuator (inside right sliding door)
• S320
• S331
• S388
• S751
• S848
• Seats system
• W/ handicapped
• W/o handicapped

WARNING SYSTEMS

Warning Systems Wiring Diagram for Buick Terraza CXL 2005

List of elements for Warning Systems Wiring Diagram for Buick Terraza CXL 2005:

• (on right side of dash support beam, above dash compt) g200
• A11
• A14
• Auto
• Battery
• Body control module (below left side of dash, left of steering column)
• Chime
• Chmsl bck/up fuse 15a
• Driver door latch assembly
• Driver seat belt switch
• Frt wsw fuse 15a
• G200 (on right side of dash support beam, above dash compt)
• G201 (on left side of dash support beam, above bcm)
• G301 (on lower left "b" pillar)
• Ground
• Head
• Headlamp switch
• Hot at all times
• Hot in acc & run
• I/p fuse block (right side of dash, behind access panel)
• Ignition sw sig
• Ignition switch
• Inflatable restraint sensing & diagnostic module (on floor below passenger seat)
• Instrument panel cluster
• Int lamp fuse 10a
• Left seat belt sw
• Lf dr ajar sig
• Logic
• Nca
• Off
• Park
• Prk lmp on sig
• S255
• S277
• S331
• S351 (w/ power seat)
• S555
• Serial data
• Sp205 (on dash harness near headlamp switch connector, behind left dash access panel)
• Stop/ trn fuse 20a
• Trunk/ lks fuse 15a
• Underhood fuse block (in underhood compt, above right front wheel well)

WIPER/WASHER

Front Wiper/Washer Wiring Diagram for Buick Terraza CXL 2005

List of elements for Front Wiper/Washer Wiring Diagram for Buick Terraza CXL 2005:

• Battery
• Body control module (below left side of dash, left of steering column)
• Frt wiper fuse 28 25a
• Frt wsw fuse 24 15a
• G200 (on right side of dash support beam, above dash compt)
• G201 (on left side of dash support beam, above bcm)
• Ground
• High
• Hot at all times
• Int
• Low
• Mist
• Off
• Park out
• Park sw sig
• Pnk
• S200
• Tan
• Underhood fuse block (in underhood compt, above right front wheel well)
• Washer pump ctrl
• Washer switch
• Windshield washer fluid pump (attached to washer fluid reservoir in underhood compt, forward of rear window washer fluid pump)
• Windshield washer sw sig c3
• Windshield wiper motor (in underhood compt, mounted on cowl)
• Windshield wiper sw high sig
• Windshield wiper sw low sig
• Windshield wiper/ washer switch
• Wiper 1 relay
• Wiper 2 relay
• Wiper sw sig 2
• Wiper switch
• Wiper switch high signal

Rear Wiper/Washer Wiring Diagram for Buick Terraza CXL 2005

List of elements for Rear Wiper/Washer Wiring Diagram for Buick Terraza CXL 2005:

• Body control module (below left side of dash, left of steering column)
• Elc fuse 2 20a
• G200 (on right side of dash support beam, above dash compt)
• G400 (late production) (on lower right "d" pillar)
• G401 (early production) (on lower left "d" pillar)
• Hot at all times
• I/p fuse block (right side of dash, behind access panel)
• Logic
• Rap relay
• Rap rly cntrl
• Rear washer
• Rear window washer fluid pump (attached to washer fluid reservoir in underhood compt, rear of windshield washer fluid pump)
• Rear window washer fluid pump relay (right rear of underhood compt)
• Rear window wiper motor (inside tailgate)
• Rear wiper
• Rr wpr fuse 3 15a
• S200
• S204
• S206
• S255
• S911
• Tan
• Turn signal/ multifunction switch