Diagram sections — 30 (56 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY COMPUTER COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING
3.8L 3.8L VIN 1, Automatic A/C Wiring Diagram (1 of 2) for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Automatic A/C Wiring Diagram (1 of 2) for Buick Regal GSE 1999: 75 (i/p harn, 34 cm from heater-a/c control breakout) (i/p harn, 4 cm from radio breakout) (i/p harness, 18 cm from radio breakout) (i/p harness, 4 cm from breakout to radio) (right side of dash) g200 (right side of steering column) sp205 +5 v A/c sol ctrl A/c solenoid Ambient outside temperature sensor (behind front panel, mounted to radiator air baffle) Battery Bi-lev sol ctrl Bi-level solenoid Blower motor Blower motor control module (behind dash, right of heater-a/c control) C 1995 vftc C10 C11 C12 C13 C14 C15 C16 Cntrl in D10 D11 D12 D13 D14 D15 D16 Data link connector (under left side of dash, right of steering column) Def sol ctrl Defrost solenoid Fuse block G200 (right side of dash) Grd Ground Heater solenoid Heater-a/c control High blower fuse 25a Hot at all times Hot in run Htr sol ctrl Hvac fuse 10a Ignition Inside air temperature sensor (right side of instrument cluster) Inside temp input Left electric actuator (left side of heater- a/c module) Lt elec actuator Motor drive Nca Outside temp input Radio,hvac fuse 15a Rear defog enable Rear defogger system Recirc sol ctrl Recirc solenoid Red Right electric actuator (right side of heater- a/c module) Rt elec actuator S202 (i/p harness, right of steering column) S230 S231 S233 S258 Sensor ground Serial data Solid state Spd cntrl Sun load input Sun load temperature sensor (top left of dash) Tan Vacuum/ electric solenoid (on right side of heater-a/c module) Volt to blw ctrl 3.8L VIN 1, Automatic A/C Wiring Diagram (2 of 2) for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Automatic A/C Wiring Diagram (2 of 2) for Buick Regal GSE 1999: 27 (engine harn, 13 cm from engine coolant fan 1 breakout) A/c clu diode A/c clu fuse 10a A/c clu relay A/c compressor clutch A10 A11 C 1995 vftc C11 Comp ctrl Cool fan 1 maxi fuse 25a Cool fan 1 relay Cool fan 2 maxi fuse 15a Cool fan 2 relay Cool fan 3 relay Engine coolant fan motor 1 Engine coolant fan motor 2 F12 G117 (3.1l) (left front of engine) g113 (3.8l) (left front of engine) Hi spd ctrl Hot at all times Ign main relay (closed in run, bulb test or start) Low spd ctrl Powertrain control module (left front side of engine compt, in air cleaner assembly) S105 Serial data Underhood accessory wiring junction block 3.8L VIN 1, Compressor Wiring Diagram for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Compressor Wiring Diagram for Buick Regal GSE 1999: 30 (auto a/c) (manual a/c) (manual a/c) c2 A/c clu diode A/c clu fuse 10a A/c clu relay A/c compressor clutch A/c compressor relay control A/c reqest A/c request signal Breakout) C11 D12 (auto a/c) Fuse block G117 (3.1l left front of engine) g113 (3.8l left front of engine) Heater- a/c control Hot at all times Hot in run Hot in run, bulb test or start Hvac fuse 10a Ign main relay Ignition Pcm-bcm fuse 10a Pnk Powertrain control module (left front side of eng compt, in air cleaner assembly) S106 (engine harn, 7 cm from pcm breakout) S233 (i/p harn, 4 cm from radio breakout) Serial data Sp205 (right side of steering column) Underhood accessory wiring junction block 3.8L VIN 1, Manual A/C Wiring Diagram for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Manual A/C Wiring Diagram for Buick Regal GSE 1999: 61 (i/p harn, 4 cm from radio breakout) s233 A/c compressor clutch A/c clu diode A/c clu fuse 10a A/c clu relay A/c request sig A/c solenoid A10 A11 Bi-level solenoid Blower motor Blower motor relay Blower motor resistor Blower sw out C11 Clutch req Comp ctrl Cool fan 1 maxi fuse 40a Cool fan 1 relay Cool fan 2 maxi fuse 30a Cool fan 2 relay Cool fan 3 relay Defogger on Defogger system Defrost solenoid Engine coolant fan motor 1 (rh) Engine coolant fan motor 2 (lh) F12 Fuse block G113 (left front of engine) G200 (right side of dash) G201 (right side of dash) Ground Heater solenoid Heater-a/c control Hi spd ctrl High blower fuse 20a Hot at all times Hot in run Hvac fuse 10a Ign main relay (closed in run, bulb test or start) Ignition Interior lights Interior lights system Lamp dim sig Left electronic actuator (left side of heater- a/c module) Left temp vlv Low blower fuse 20a Low spd ctrl Nca Off Powertrain control module (left front side of engine compt, in air cleaner assembly) Recirc solenoid Red Right electronic actuator (w/ cj3) (right side of heater- a/c module) Right temp vlv S105 (engine harn, 13 cm from engine coolant fan 1 breakout) S230 (i/p harn, 18 cm from radio breakout) Tan Underhood accessory wiring junction block Vacuum/ electronic solenoid (right side of heater- a/c module) 3.8L VIN K, Automatic A/C Wiring Diagram (1 of 2) for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Automatic A/C Wiring Diagram (1 of 2) for Buick Regal GSE 1999: 75 (i/p harn, 34 cm from heater-a/c control breakout) (i/p harn, 4 cm from radio breakout) (i/p harness, 18 cm from radio breakout) (i/p harness, 4 cm from breakout to radio) (right side of dash) g200 (right side of steering column) sp205 +5 v A/c sol ctrl A/c solenoid Ambient outside temperature sensor (behind front panel, mounted to radiator air baffle) Battery Bi-lev sol ctrl Bi-level solenoid Blower motor Blower motor control module (behind dash, right of heater-a/c control) C 1995 vftc C10 C11 C12 C13 C14 C15 C16 Cntrl in D10 D11 D12 D13 D14 D15 D16 Data link connector (under left side of dash, right of steering column) Def sol ctrl Defrost solenoid Fuse block G200 (right side of dash) Grd Ground Heater solenoid Heater-a/c control High blower fuse 25a Hot at all times Hot in run Htr sol ctrl Hvac fuse 10a Ignition Inside air temperature sensor (right side of instrument cluster) Inside temp input Left electric actuator (left side of heater- a/c module) Lt elec actuator Motor drive Nca Outside temp input Radio,hvac fuse 15a Rear defog enable Rear defogger system Recirc sol ctrl Recirc solenoid Red Right electric actuator (right side of heater- a/c module) Rt elec actuator S202 (i/p harness, right of steering column) S230 S231 S233 S258 Sensor ground Serial data Solid state Spd cntrl Sun load input Sun load temperature sensor (top left of dash) Tan Vacuum/ electric solenoid (on right side of heater-a/c module) Volt to blw ctrl 3.8L VIN K, Automatic A/C Wiring Diagram (2 of 2) for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Automatic A/C Wiring Diagram (2 of 2) for Buick Regal GSE 1999: 27 (engine harn, 13 cm from engine coolant fan 1 breakout) A/c clu diode A/c clu fuse 10a A/c clu relay A/c compressor clutch A10 A11 C 1995 vftc C11 Comp ctrl Cool fan 1 maxi fuse 25a Cool fan 1 relay Cool fan 2 maxi fuse 15a Cool fan 2 relay Cool fan 3 relay Engine coolant fan motor 1 Engine coolant fan motor 2 F12 G117 (3.1l) (left front of engine) g113 (3.8l) (left front of engine) Hi spd ctrl Hot at all times Ign main relay (closed in run, bulb test or start) Low spd ctrl Powertrain control module (left front side of engine compt, in air cleaner assembly) S105 Serial data Underhood accessory wiring junction block 3.8L VIN K, Compressor Wiring Diagram for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Compressor Wiring Diagram for Buick Regal GSE 1999: 30 (auto a/c) (manual a/c) (manual a/c) c2 A/c clu diode A/c clu fuse 10a A/c clu relay A/c compressor clutch A/c compressor relay control A/c reqest A/c request signal Breakout) C11 D12 (auto a/c) Fuse block G117 (3.1l left front of engine) g113 (3.8l left front of engine) Heater- a/c control Hot at all times Hot in run Hot in run, bulb test or start Hvac fuse 10a Ign main relay Ignition Pcm-bcm fuse 10a Pnk Powertrain control module (left front side of eng compt, in air cleaner assembly) S106 (engine harn, 7 cm from pcm breakout) S233 (i/p harn, 4 cm from radio breakout) Serial data Sp205 (right side of steering column) Underhood accessory wiring junction block 3.8L VIN K, Manual A/C Wiring Diagram for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Manual A/C Wiring Diagram for Buick Regal GSE 1999: 61 (i/p harn, 4 cm from radio breakout) s233 A/c compressor clutch A/c clu diode A/c clu fuse 10a A/c clu relay A/c request sig A/c solenoid A10 A11 Bi-level solenoid Blower motor Blower motor relay Blower motor resistor Blower sw out C11 Clutch req Comp ctrl Cool fan 1 maxi fuse 40a Cool fan 1 relay Cool fan 2 maxi fuse 30a Cool fan 2 relay Cool fan 3 relay Defogger on Defogger system Defrost solenoid Engine coolant fan motor 1 (rh) Engine coolant fan motor 2 (lh) F12 Fuse block G113 (left front of engine) G200 (right side of dash) G201 (right side of dash) Ground Heater solenoid Heater-a/c control Hi spd ctrl High blower fuse 20a Hot at all times Hot in run Hvac fuse 10a Ign main relay (closed in run, bulb test or start) Ignition Interior lights Interior lights system Lamp dim sig Left electronic actuator (left side of heater- a/c module) Left temp vlv Low blower fuse 20a Low spd ctrl Nca Off Powertrain control module (left front side of engine compt, in air cleaner assembly) Recirc solenoid Red Right electronic actuator (w/ cj3) (right side of heater- a/c module) Right temp vlv S105 (engine harn, 13 cm from engine coolant fan 1 breakout) S230 (i/p harn, 18 cm from radio breakout) Tan Underhood accessory wiring junction block Vacuum/ electronic solenoid (right side of heater- a/c module)
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams for Buick Regal GSE 1999 List of elements for Anti-lock Brake Wiring Diagrams for Buick Regal GSE 1999: 69 (2000) (1999) (below dash, left of steering column) A10 A11 A8 b5 Abs fuse 10a Abs maxi fuse 60a Abs warning B10 B11 B12 B6 a11 Battery Body control module (bcm) (behind left side of dash) Brake Brake fluid level indicator switch (in brake fluid reservoir) Brake pressure modulator valve C1 stop lamp switch (brake pedal support bracket) C10 C11 C2 c2 C3 c2 Cluster fuse 10a Data link connector (dlc) (under left side of dash) Delivered torque Desired torque Electronic brake control module (ebcm) (at left side of engine compartment) Electronic power steering system Electronic traction control switch Fuse block G129 (left of starter, on transaxle stud) G202 G202 (on steering column) Ground Hot at all times Hot in run, bulb test or start Ignition Instrument cluster Interior lights system Left front wheel spd (hi) Left front wheel spd (lo) Left front wheel speed sensor Left rear wheel spd (hi) Left rear wheel spd (lo) Left rear wheel speed sensor Low trac Nca Pnk Powertrain control module (pcm) (left front of eng compt) Pump motor Red Right front wheel spd (hi) Right front wheel spd (lo) Right front wheel speed sensor Right rear wheel spd (hi) Right rear wheel spd (lo) Right rear wheel speed sensor S205 (i/p harn, right of steering column) S211 Serial data signal Solid state Splice pack (sp205) (right side of steering column) Stop lamp sw out Stop lamps fuse 15a Strng var assist motor Tan Trac off Underhood accessory wiring junction block Vent tube
ANTI-THEFT Anti-theft Wiring Diagram for Buick Regal GSE 1999 List of elements for Anti-theft Wiring Diagram for Buick Regal GSE 1999: 40 (in air cleaner assembly) powertrain control module 5v ref B12 Bat Bcm grd Bcm pwr fuse 10a Body control module (behind left side of dash, left of steering column) Cluster fuse 10a Crank maxi fuse 40a Crank relay Crank sig Crank signal bcm cluster fuse 10a Data link connector (dlc) (under left side of dash) F10 Fuse block G202 (below dash, right side of steering column) Hot at all times Hot in off, run or start Hot in run, bulb test or start Hot in start Ign Ign 0 Ign 0 cluster bcm & pcm fuse 10a Ign ref lo Instrument cluster Key Nca Pcm bcm u/h relay fuse 10a Pnk Resistor pellet S211 S270 Security indicator Serial data Splice pack s205 (below dash, right side of steering column) Starter enable Starter solenoid Steering column lock & ignition key cylinder Transaxle range switch (on transaxle) Underhood electrical center (mounted to right strut tower)
BODY COMPUTER Body Computer Wiring Diagrams for Buick Regal GSE 1999 List of elements for Body Computer Wiring Diagrams for Buick Regal GSE 1999: 95 (below dash, right side of steering column) A10 A11 A12 Accessory Accessory time delay (rap) relay (behind glove box, mounted to underside of cross car beam) All door locks Anti-lock brakes system Anti-theft system B10 B11 B12 Backup lamp rly ctrl Bcm (battery) Bcm (ground) Bcm fuse 10a Body control module (bcm) (behind left side of dash, left of steering column) C10 C11 C12 C13 C14 C15 C16 Computer data lines system Courtesy light on (battery) Courtesy lights (battery) Crank Crank signal fuse 10a D10 D11 D12 D13 D14 D15 D16 Door ajar (battery) Door lock switch (lock) Door lock switch (unlock) Door locks (battery) Door locks fuse 20a Door locks system Doors (ground) Driver door ajar (battery) Driver door unlock Drl link Exterior lights system Fog light control (ground) Fuse block (right side of dash) G202 Headlights system Horn (ground) Horns system Hot at all times Hot in accy or run Hot in off, bulb test run or start Hot in run, bulb test or start Hot in start Ign 0 fuse 10a Ignition 0 Ignition 1 Ignition 1 park brake Ignition 1 performance Ignition key read (5v) Ignition ref low (ground) Inadv power bus fuse 15a Interior lights system Key in ignition Keyless entry link Nca Park light off (ground) Passenger doors unlock Pcm- bcm fuse 10a Performance shift switch (regal gs only) Pnk Rap relay drive (ground) Rear compt lid rly S211 S234 S269 S270 S283 Seat belt switch (ign 1) Serial data (class 2) Tan Theater dimming (ground) Theater dimming 1 Theater dimming 2 Tire infl reset Tire inflation reset switch Traction ctrl req Trunk ajar Trunk release system Underhood accessory wiring junction block Warning system
COMPUTER DATA LINES Computer Data Lines for Buick Regal GSE 1999 List of elements for Computer Data Lines for Buick Regal GSE 1999: 25 A5 uart data Body control module (bcm) (behind left side of dash, left of steering column) D12 Data clss 2 Data link connector (dlc) (under left side of dash, right of steering column) E & c serial data E1 e & c serial data Electronic brake control/electronic brake traction control module (ebcm/ebtcm) (below left side of dash, left of steering column) Fuse block G201 (behind right side of glove box) G205 (below dash, right side of steering column) H e & c serial data Hot at all times Htr-a/c control Inflatable restraint sensing & diagnostic module (sdm) (below carpet, under right front seat) Instrument cluster Mobile telephone handset (if equipped) Powertrain control module (pcm) (left front side of engine compt, in air cleaner assembly) Radio Radio, hvac, rfa, cluster, cel tel fuse 15a Remote cd player (if equipped) S202 S211 S230 Splice pack sp205 (below dash, right of steering column)
COOLING FAN
3.8L 3.8L VIN 1, Cooling Fan Wiring Diagram for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Cooling Fan Wiring Diagram for Buick Regal GSE 1999: 19 A10 A11 All times C11 Cool fan 2 maxi fuse 15a Cool fan 1 maxi fuse 25a Cool fan 1 relay Cool fan 2 relay Cool fan 3 relay Engine coolant fan motor 1 (rh) Engine coolant fan motor 2 (lh) F12 G113 (left front of engine) Hi spd ctrl Hot at Low spd ctrl Powertrain control module (left front side of engine compt, in air cleaner assembly) S105 (engine harn, 13 cm from engine coolant fan 1 breakout) Underhood accessory wiring junction block 3.8L VIN K, Cooling Fan Wiring Diagram for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Cooling Fan Wiring Diagram for Buick Regal GSE 1999: 19 A10 A11 All times C11 Cool fan 2 maxi fuse 15a Cool fan 1 maxi fuse 25a Cool fan 1 relay Cool fan 2 relay Cool fan 3 relay Engine coolant fan motor 1 (rh) Engine coolant fan motor 2 (lh) F12 G113 (left front of engine) Hi spd ctrl Hot at Low spd ctrl Powertrain control module (left front side of engine compt, in air cleaner assembly) S105 (engine harn, 13 cm from engine coolant fan 1 breakout) Underhood accessory wiring junction block
CRUISE CONTROL Cruise Control Wiring Diagram for Buick Regal GSE 1999 List of elements for Cruise Control Wiring Diagram for Buick Regal GSE 1999: 39 (front of left strut tower) All times Brake signal input Cruise control module Cruise control release switch (left side of dash) Cruise control switch Cruise fuse 10a Cruise on/off Disable input Disable output Engage input Engaged output Exterior lights system G204 (below dash, left of steering column) Ground Hot at Hot in run I/p fuse block (behind right side of dash) Ignition Instrument cluster system Off Only Powertrain control module (pcm) (front left side of engine compt) R/a Release signal Resume/accel S205 (i/p harness, near steering column) S240 S283 S295 (behind ashtray) Set sw Set/coast Stop lamps fuse 15a Stoplight switch (brake pedal support bracket) Vehicle speed input Vehicle speed sensor (vss) (lower right of engine, compt, on transaxle) Vss high Vss low Vss output
DEFOGGERS Defogger Wiring Diagram for Buick Regal GSE 1999 List of elements for Defogger Wiring Diagram for Buick Regal GSE 1999: 30 (behind the right side of glove box) (left front door sill) g309 (left front side of trunk) g400 C1 (cj2) (c60/cj3) D nca D15 (cj2) (c60/cj3) Fuse block G201 Heated mirror fuse 10a Heater & a/c control Hot at all times Hot in run Hvac fuse 10a Left outside rearview mirror Mirror defogger Nca On ind On/off momentary defogger switch Radio noise suppressor wire (in right "c" pillar) Rear window defogger Rear window defogger relay (behind glove box, mounted to underside of cross-car beam) Right outside rearview mirror Rrear defogger circuit breaker 30a S230 S233 S268 (i/p harn, near blwr motor) nca S504 S604 Solid state timer Under driver's seat)
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Buick Regal GSE 1999 List of elements for Electronic Power Steering Wiring Diagram for Buick Regal GSE 1999: 28 1995 vftc c A11 A4 c2 A9 c1 Abs fuse 10a Abs maxifuse 60a B10 B11 Computer data lines system Data link connector (dlc) (under left side of dash, right of steering column) Electronic brake control module/ electronic brake traction control module (ebcm/ebtcm) (at left side of engine compartment, near strut tower) Engine control system Fuse block (behind right side of dash) G129 (left of starter, on transaxle stud) Ground Hot at all times Hot in run, bulb test & start Ignition Msva high Msva lo Nca Pnk Red Serial data Splice pack sp205 (below dash, on right side of steering column) Steering gear Steering gear (msva) actuator (left rear of engine compt, behind transaxle) Underhood accessory wiring junction block (mounted to right strut tower)
ENGINE PERFORMANCE
3.8L 3.8L VIN 1, Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GSE 1999: 85 (ign harn, top of eng, near ign control module) (not used) (on trans- axle stud) (pin 11 not used) (pin 14-15 not used) (pin 21 & 23-27 not used) (pin 40-42 not used) (pin 49-52 not used) (pin 66-67 not used) (top front of engine) 1-2 ss valve control 18x ref signal 2-3 ss valve control 3x ref signal A/t iss sensor high A/t iss sensor low Bank 1 knock sensor (left side of eng, in front of starter) Bank 2 knock sensor (right side of eng, below exhaust manifold) Camshaft position sensor (cmp) (front of eng, above crankshaft pulley) Cmp signal Cooling fans system Crankshaft position sensor (ckp) (front of eng, behind harmonic balancer) Cruise control system Cruise disable output Data link connector (dlc) (under left side of dash, right of steering column) Ecm fuse 10a Ect sensor signal Egr val control (gnd) Elek ign fuse 15a Eng emis fuse 10a Evap purge val control F/injr fuse 15a F/pump speed ctrl rly Fuel inj 1 control Fuel inj 2 control Fuel inj 4 control Fuel inj 5 control Fuel inj 6 control Fuse block (behind right side of dash, in right door opening) G125 G129 High speed fans control Hos1 low Hos2 low Hot at all times Hot in off, run bulb test, or start Hot in run, bulb test or start Iac coil b high Iat sensor ground Ic control Ign 0 fuse 10a Ignition control Ignition control module (icm) (top front of eng) Ignition wake up power Knock sensor signal 1 Knock sensor signal 2 Low speed fans control Maf sensor signal Map sensor Map sensor signal Pcm ground Pnk Pnk p Power (battery) Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly) Ref low S106 S144 S145 S270 Sensor grd Sensor ground Serial data (class 2) Spark plugs Splice pack sp250 Tan Tcc brake switch input Torque requested Tp sensor signal Tr switch input b Trans fluid press sw a Underhood accessory wiring junction box (mounted to right strut tower) Vss high Vss low Vss output 3.8L VIN 1, Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GSE 1999: 15 (on transaxle stud) Electronic brake control/ electronic brake traction traction control (ebcm/ebtcm) (below left side of dash, left of steering column) Evaporative emissions (evap) canister purge solenoid valve (top right side of eng, near center of valve cover) Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, in wheelwell) Fuel injectors G129 Pnk S105 S106 S109 Stop- light switch (on brake pedal support c2 bracket) Tan Transaxle range switch (on top right rear of transaxle) Underhood accessory wiring junction box (mounted to right strut tower) Vehicle speed sensor (vss) (lower right side of eng compt, on transaxle) 3.8L VIN 1, Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GSE 1999: 32 (body harn, under rear seat) (eng harn, near 4 cm from pcm breakout) (in exhaust system, rear of catalytic converter) heated oxygen sensor 2 (ho2s 2) (in right side exhaust manifold) heated oxygen sensor 1 (ho2s 1) (on bottom of engine oil pan) engine oil level indicator switch (on throttle body assembly) idle air control (iac) valve (on transaxle stud) (top rear of eng, part of throttle body assembly) mass airflow (maf) sensor A tan A/c refrigerant pressure sensor (on left side of eng compt, on accumulator) B12 D pnk Engine coolant temperature (ect) sensor (top left side of eng, below throttle body) Engine oil pressure indicator switch (lower right side of eng, above transaxle) Exhaust gas recirculation (egr) valve (top rear of eng, near throttle body) Fuel tank pressure sensor (in fuel tank) G129 Hot in run, bulb test or start Instrument cluster Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct) Malfunction indicator lamp Manifold absolute pressure (map) sensor (top right of eng, on front of intake manifold) Nca Oxy sen fuse 15a Pnk S105 S167 S409 Tan Throttle position (tp) sensor (on throttle body assembly) Trans fuse 10a Underhood accessory wiring junction box (mounted to right strut tower) 3.8L VIN 1, Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GSE 1999: 91 (fuel pump prime terminal) (on transaxle stud) (pin 12-15 not used) (pin 36-38 not used) (pin 40-41 not used) (pin 47-48 not used) (pin 51-54 not used) (pin 6 & 8 not used) (pin 62 & 64-65 not used) (pin 70-75 not used) (right rear shelf) 1-2 shift solenoid 2-3 shift solenoid 5v ref a A/c compress clutch rly A/c refrig press signal A/c request signal A/t iss solenoid A11 Air conditioning system Auto transaxle fluid temperature sensor Automatic transaxle fluid pressure manual valve position switch Boost control sol Cluster fuse 10a Crank Crank signal fuse 10a Cruise control system Cruise engaged input D10 Ect sensor signal Egr pintle position signal Egr val ign positive volt Eng emis fuse 10a Eng oil level ind in Eng oil press sensor sig Evap can vent sol F/pmp fuse 15a F/pmp spd cont relay Fuel inj 3 control Fuel level sensor Fuel level sensor input Fuel pump Fuel pump relay Fuel pump relay control Fuel pump resistor (outside of right front frame rail) Fuel tank Fuel tank press signal Fuse block (behind right side of dash, in right door opening) G129 G313 Gen terminal f output Gen terminal l output Ho2s 1 signal Ho2s 2 signal Hot at all times Hot in run, bulb test, or start Hot in start Iac coil a high Iac coil a low Iac coil b low Iat sensor signal Ignition positive volt (2) Map sensor signal Mil control Pc sol valve high Pc sol valve low Pcm- bcm fuse 10a Pnk Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly) Ps solenoid Red S106 S234 Sensor ground Starter enable control Starting/ charging system Supercharger bypass valve (top left of eng, above left valve cover) Tan Tan b Tcc release switch input Tcc sol valve control Tcc solenoid Tft sensor signal Torque delivered Tp sens or signal Tr switch input a Tr switch input c Tr switch input d Trans fluid press sw b Transaxle Underhood accessory wiring junction box (mounted to right strut tower) 3.8L VIN K, Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GSE 1999: 83 (ign harn, top of eng, near ign control module) (not used) (on trans- axle stud) (pin 11 not used) (pin 14-15 not used) (pin 21 & 23-27 not used) (pin 40-42 not used) (pin 49-52 not used) (pin 66-67 not used) (top front of engine) 1-2 ss valve control 18x ref signal 2-3 ss valve control 3x ref signal A/t iss sensor high A/t iss sensor low Bank 1 knock sensor (left side of eng, in front of starter) Bank 2 knock sensor (right side of eng, below exhaust manifold) Camshaft position sensor (cmp) (front of eng, above crankshaft pulley) Cmp signal Cooling fans system Crankshaft position sensor (ckp) (front of eng, behind harmonic balancer) Cruise control system Cruise disable output Data link connector (dlc) (under left side of dash, right of steering column) Ecm fuse 10a Ect sensor signal Egr val control (gnd) Elek ign fuse 15a Eng emis fuse 10a Evap purge val control F/injr fuse 15a Fuel inj 1 control Fuel inj 2 control Fuel inj 4 control Fuel inj 5 control Fuel inj 6 control Fuse block (behind right side of dash, in right door opening) G125 G129 High speed fans control Hos1 low Hos2 low Hot at all times Hot in off, run bulb test, or start Hot in run, bulb test or start Iac coil b high Iat sensor ground Ic control Ign 0 fuse 10a Ignition control Ignition control module (icm) (top front of eng) Ignition wake up power Knock sensor signal 1 Knock sensor signal 2 Low speed fans control Maf sensor signal Map sensor Map sensor signal Pcm ground Pnk Pnk p Power (battery) Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly) Ref low S106 S144 S145 S270 Sensor grd Sensor ground Serial data (class 2) Spark plugs Splice pack sp250 Tan Tcc brake switch input Tp sensor signal Tr switch input b Trans fluid press sw a Underhood accessory wiring junction box (mounted to right strut tower) Vss high Vss low Vss output 3.8L VIN K, Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GSE 1999: 14 (on transaxle stud) Evaporative emissions (evap) canister purge solenoid valve (top left side of eng, near center of valve cover) Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, in wheelwell) Fuel injectors G129 Pnk S105 S106 S109 Stop- light switch (on brake pedal support c2 bracket) Tan Transaxle range switch (on top right rear of transaxle) Underhood accessory wiring junction box (mounted to right strut tower) Vehicle speed sensor (vss) (lower right side of eng compt, on transaxle) 3.8L VIN K, Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GSE 1999: 32 (body harn, under rear seat) (eng harn, near 4 cm from pcm breakout) (in exhaust system, rear of catalytic converter) heated oxygen sensor 2 (ho2s 2) (in right side exhaust manifold) heated oxygen sensor 1 (ho2s 1) (on bottom of engine oil pan) engine oil level indicator switch (on throttle body assembly) idle air control (iac) valve (on transaxle stud) (top rear of eng, part of throttle body assembly) mass airflow (maf) sensor A tan A/c refrigerant pressure sensor (on left side of eng compt, on accumulator) B12 D pnk Engine coolant temperature (ect) sensor (top left side of eng, below throttle body) Engine oil pressure indicator switch (lower right side of eng, above transaxle) Exhaust gas recirculation (egr) valve (top rear of eng, near throttle body) Fuel tank pressure sensor (in fuel tank) G129 Hot in run, bulb test or start Instrument cluster Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct) Malfunction indicator lamp Manifold absolute pressure (map) sensor (top of engine, on front of intake manifold) Nca Oxy sen fuse 15a Pnk S105 S167 S409 Tan Throttle position (tp) sensor (on throttle body assembly) Trans fuse 10a Underhood accessory wiring junction box (mounted to right strut tower) 3.8L VIN K, Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GSE 1999 List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GSE 1999: 85 (fuel pump prime terminal) (on transaxle stud) (pin 12-15 not used) (pin 36-38 not used) (pin 40-41 not used) (pin 47-48 not used) (pin 51-54 not used) (pin 6 & 8 not used) (pin 62 & 64-65 not used) (pin 70-75 not used) (right rear shelf) 1-2 shift solenoid 2-3 shift solenoid 5v ref a A/c compress clutch rly A/c refrig press signal A/c request signal A/t iss solenoid A11 Air conditioning system Auto transaxle fluid temperature sensor Automatic transaxle fluid pressure manual valve position switch Cluster fuse 10a Crank Crank signal fuse 10a Cruise control system Cruise engaged input D10 Ect sensor signal Egr pintle position signal Egr val ign positive volt Eng oil level ind in Eng oil press sensor sig Evap can vent sol F/pmp fuse 15a F/pump relay Fuel inj 3 control Fuel level sensor Fuel level sensor input Fuel pump Fuel pump relay control Fuel tank Fuel tank press signal Fuse block (behind right side of dash, in right door opening) G129 G313 Gen terminal f output Gen terminal l output Ho2s 1 signal Ho2s 2 signal Hot at all times Hot in run, bulb test, or start Hot in start Iac coil a high Iac coil a low Iac coil b low Iat sensor signal Ignition positive volt (2) Map sensor signal Mil control Pc sol valve high Pc sol valve low Pcm- bcm fuse 10a Pnk Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly) Ps solenoid Red S106 S234 Sensor ground Starter enable control Starting/ charging system Tan Tan b Tcc release switch input Tcc sol valve control Tcc solenoid Tft sensor signal Tp sens or signal Tr switch input a Tr switch input c Tr switch input d Trans fluid press sw b Transaxle Underhood accessory wiring junction box (mounted to right strut tower)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Buick Regal GSE 1999 List of elements for Back-up Lamps Wiring Diagram for Buick Regal GSE 1999: 14 (body harness, under left rear seat) s424 A12 c2 B1 c2 Backup lamps relay (behind left side of dash) Body control module (bcm) (behind left side of dash) G313 (right side of rear shelf) Hot at all times Left back-up lamp Mirrors system (automatic day/night mirror) R/cmpt rel fuse 7.5a Right back-up lamp S905 (rear compt harness, center of trunk lid) S915 Underhood accessory wiring junction block (mounted to right strut tower) Exterior Lamps Wiring Diagram for Buick Regal GSE 1999 List of elements for Exterior Lamps Wiring Diagram for Buick Regal GSE 1999: 88 (chmsl harness, center of rear window trim panel, 12 cm from chmsl lamps breakout) s417 (on parking brake assy) park brake indicator switch A c1 A10 A11 A12 A12 c3 A13 A14 A15 Anti-lock brakes system B c1 B11 Body control module (bcm) (behind left side of dash) C2 f12 Center high mounted stoplamp (chmsl) Cruise control system D12 Daytime running lamps (drl) ambient light sensor (top right side of dash, at base of windshield) Daytime running lamps (drl) control module (behind left side of dash) Drl fuse 10a E10 E11 E12 E13 F11 Frt park lps fuse 10a Fuse block Fuse block (behind right side of dash) G cornering lamp G park/ turn signal lamp G side marker lamp G108 (left side of front end upper tie bar) G204 (below dash, left side of steering column) G204 (left side of strg column) G313 (right side of rear shelf) G400 (left front side of trunk) Hazard Hazard lamp/ turn signal lamp flasher (below left side of dash) Hazard lamps fuse 15a Head Headlamp switch Hot at all times Hot in run Hot in run, bulb test or start Hvac fuse 10a Instrument cluster Left Left headlamp Left rear park lamps Left rear side marker lamp Left tail/ turn signal/ stop- lamp Left turn indicator Lp park fuse 20a Marker lamp Nca Normal Off Park Park/ g Pnk Power distribution Rear license lamps Right Right headlamp Right rear park lamps Right rear side marker lamp Right side of steering column, 5 cm from ground breakout) s291 Right tail/ turn signal/ stop- lamp Right turn indicator S124 S205 (dash harness, near steering column) S233 S277 (dash harness, right side of steering column, 23 cm from radio breakout) S283 S402 S403 S408 S416 Side g Stop fuse 15a Stoplight switch (on brake pedal support bracket) Tail lamps, lic lamps fuse 15a Turn signal lamp Turn signal switch Turn signals, corn lps fuse 10a Underhood accessory wiring junction block Underhood accessory wiring junction block (mounted to right strut tower)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 2) for Buick Regal GSE 1999 List of elements for Ground Distribution Wiring Diagram (1 of 2) for Buick Regal GSE 1999: 85 (ashtray harn, inside ashtray) (c60/cj3) (century) (cj2) (engine harness, 4 cm from engine coolant fan jumper connector breakout) (forward lamp harn, below left headlamp, 7 cm from left headlamp breakout) (front console harn, in console 7 cm from accessory power receptacle breakout) (regal) A/c clu diode A/c compressor clutch coil A18 Accessory power outlet (regal) Ashtray lamp (1999 century) Ashtray lamp (2000-01 century) Automatic transaxle control position indicator bulb (regal) Battery Blower motor control processor Blower motor resistor assembly C11 C206 C60/cj3 Century & 2000-01 all Cigar lighter (1999 century) Cigar lighter (2000-01 century) Cigar lighter (regal) Cj2 Console compartment lamp (regal) Cool fan 2 relay Data link connector (dlc) Door Electronic brake control module (ebcm)/ electronic brake traction control module (ebcm/ebtcm) Engine coolant level indicator module (1999) Engine coolant level indicator module (2000-01) Engine oil level indicator switch Engine oil pressure indicator switch F/pump relay Fuse block-underhood G101 (right side of eng compt, at base of battery) G108 (left front side of radiator support) G120 (right side of engine, on ignition control module bracket) G129 (left of starter, on trans- axle stud) G129 (left of starter, on transaxle stud) G201 (behind the right side of the glove box) Heated oxygen sensor 1 Heated oxygen sensor 2 Heater- a/c control Horns I/p compartment lamp switch Ign main relay Ignition control module (icm) Inflatable restraint sensing & diagnostic module Inflatable restraint steering wheel module coil Left cornering lamp Left electric actuator Left engine coolant fan motor Left fog lamp (regal) Left headlamp Left park/ turn signal lamp Left radio control switch Left side marker lamp Lock relay (1999) Mass airflow (maf) sensor Nca Park/ neutral position switch Power drop connector Powertrain control module (pcm) Red Regal Right cornering lamp Right electric actuator Right engine coolant fan motor Right fog lamp (regal) Right headlamp Right park/ turn signal lamp Right radio control switch Right side marker lamp S105 S106 (eng harn, 7 cm from pcm breakout) S124 S295 S335 Secondary air injection reaction pump motor (air) (2000-01) Steering column electric park lock (w/ console) Windshield washer pump Windshield washer solvent level switch Ground Distribution Wiring Diagram (2 of 2) for Buick Regal GSE 1999 List of elements for Ground Distribution Wiring Diagram (2 of 2) for Buick Regal GSE 1999: 117 (1999) (2000-01) (back-up lamp harness, in rear compt lid) (body harn, right out- side floor, next to pass seat) (body harness, right side of trunk) (left tail lamp harn) (main body harness, approx 7 cm from rear compartment courtesy lamp breakout) (right side of rear shelf) g313 31 cm from left sunshade mirror breakout) A a A12 Audio amplifier (base) Base Below driver's seat) s303 Body control module (bcm) Brake fluid level indicator switch Breakout) C201 C3 c1 C3 c4 Center high mounted stop lamps Cruise control module D b Data link connector (dlc) Daytime running lamp control module (1999) Driver information display switch (regal) Driver lumbar horizontal adjuster relay Driver lumbar vertical adjuster relay Driver seat adjuster switch Driver seat belt switch Driver seat heater control module Driver seat heater switch Driver's heated seat back element Driver's heated seat thermister E k E16 Electronic traction control switch (regal) Fog lamp switch (regal) Fuel pump G204 (below dash, left side of steering column) G205 (below dash, right side of steering column) G309 (left front door sill) G313 (right side of rear shelf) G314 (left side of rear shelf) Ground (on steering column) Harn, 5 cm from s383 Hazard lamp/ turn signal lamp flasher Headlamp dimmer switch Headlamp relay (2000-01) Headlamp switch Headlamp switch breakout) Ignition key alarm switch In rear compt lid) s930 Inside rearview mirror (day-night) Inside rearview mirror (lighted) Instrument panel cluster (ipc) Left back-up lamp Left front door lock Left front door lock switch Left front window switch Left license lamp Left outside rearview mirror Left rear door lock (ajar indicator switch) Left rear park lamp Left rear side marker lamp Left roof rail courtesy/ reading lamp Left sunshade mirror lamp Left tail/ stop/turn signal lamp Nca Outside remote control rearview mirror switch Passenger seat adjuster switch Passenger seat heater control module Passenger seat heater switch Passenger's heated seat back element Passenger's heated seat thermistor Performance shift switch (regal grand sport) Provision for mobile telephone amplifier (1999) Provision for mobile telephone handset (1999) Radio Radio antenna module Radio noise suppressor Rear compartment lid ajar switch Rear compartment lid lock release actuator Rear window defogger grid Remote cd changer (1999, 2000) Remote control door lock receiver Right back-up lamp Right front door lock (ajar indicator switch) Right front door lock switch Right front window switch Right license lamp Right outside rearview mirror Right rear door lock (ajar indicator switch) Right rear park lamp Right rear side marker lamp Right roof rail courtesy/ reading lamp Right sunshade mirror lamp Right tail/ stop/turn signal lamp S211 (i/p harness, 20 cm from inst cluster breakout) S255 (mobile telephone harn, center of dash) S301 (or s418) S330 (driver's seat harn, below driver's seat) S333 (pass seat harn, under pass seat) S402 (right tail lamp harness) S403 S414 S604 (right front door harness, 8 cm from window switch breakout) Sunroof module Tan Tire reset switch Vehicle interface unit (viu) (2001) W/ cell w/o phone cell phone & 2000- W/ dc4 W/ dd8 W/ heated seats W/o heated seats Wind- shield wiper motor
HEADLIGHTS Headlight Wiring Diagram for Buick Regal GSE 1999 List of elements for Headlight Wiring Diagram for Buick Regal GSE 1999: 69 (i/p harn, right side of steering column, approx 23cm from cluster breakout) s221 A10 B7 pnk Battery Body control module (left of steering column) D11 Daytime running lamps ambient light sensor (top right side of dash) Daytime running lamps control module (behind left side of dash) Drl fuse 10a Drl link E1 c2 Exterior lights system F10 F2 c3 Flash Fog lamp relay Fog lamp switch Fog lp ctrl Fog lt fuse 10a Fuse block (behind right side of dash) G108 (left side of front end upper tie bar) G204 (below dash, left side of steering column) Gnd Hdlp l fuse 15a Hdlp r fuse 15a Head Headlamp dimmer switch Headlamp switch Headlamps on High High beam High beam indicator Hot at all times Hot in run Hot in run, bulb test and start Hvac fuse 10a Ign 1 Ign 3 Illum Instrument cluster Interior lights system Left fog lamp Left headlamp Lf turn-sig feed Lf turn-sig sw out Light sensor in Light sensor sig Low Low beam Lp park fuse 20a Off Park Park brake indicator switch Park brk sw alarm Park brk sw in Park lamp sw out Park lp off Pnk Radio,hvac,rfa, cluster cel tel fuse 15a Rf turn-sig feed Rf turn-sig sw out Right fog lamp Right headlamp S123 S202 S283 Tan Underhood accessory wiring junction block (mounted to right strut tower) Warning system (body control module)
HORN Horn Wiring Diagram for Buick Regal GSE 1999 List of elements for Horn Wiring Diagram for Buick Regal GSE 1999: 33 (1999) (2000/2001) (century/regal) (century/regal) (intrigue) (century/regal: below dash, right side of steering column) (intrigue) (intrigue) v (century/regal) a17 (intrigue: right side of dash) Body control module (left of steering column) C1 c3 C201 C6 a5 C8 c3 Century/regal G108 g109 (century/regal: left side of front end upper tie bar) (intrigue: right side of front end upper tie bar) G205 g201 G207 (on steering column) High note horn Horn fuse 15a Horn output Horn relay Horn switch Horns (behind right front fascia) Hot at all times Inflatable restraint steering wheel module Intrigue Low note horn Red S124 s123 S211 s230 Slip ring Turn signal cancel cam Turn signal switch Underhood accessory wiring junction block (mounted on right strut tower)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram for Buick Regal GSE 1999 List of elements for Instrument Cluster Wiring Diagram for Buick Regal GSE 1999: 112 (below dash, left side of steering column) g204 (mounted to right strut tower) underhood accessory wiring junction block (not used) 12 v reg A10 A11 A12 Air bag ind Antilock ind Antilock ind ctrl B10 B11 B12 Battery Body control module (behind left side of dash, left of steering column) Brake fluid level indicator switch (in brake fluid reservoir) Brake ind Brake ind ctrl Change oil soon ind Change oil soon ind ctrl Charge ind Charge ind ctrl Cluster fuse 10a Coolant temp ind Coolant temp ind ctrl Coolant temperature gauge Crank Crank signal fuse 10a Cruise ind Cruise ind ctrl D12 Data link connector (under left side of dash, right of steering column) Dim Door ajar ind Door ajar ind ctrl Driver information display switch (regal only) E/m Electronic brake control/ electonic brake traction control module (below left side of dash, left of steering column) Engine controls system Engine coolant level indicator module (mounted on right side of radiator) Exterior lights system Fuel gauge Fuse block G102 (at base of left strut tower) G129 (on transaxle stud) G201 (behind right side of dash) G202 (on steering column) Ground Heater-a/c control High beam ind Hot at all times Hot in off, run or start Hot in run, bulb test and start Hot in start Ign Ign 0 fuse 10a Illumination (5 bulbs) Inflatable restraint sensing & diagnostic module (sdm) (below carpet, under right front seat) Instrument cluster Interior lights system Left turn ind Left turn lamp ctrl Low coolant ind Low fuel ind Low fuel ind ctrl Low oil ctrl Low oil ind Low tire ind Low tire ind ctrl Low trac ind Low trac ind ctrl Low washer fluid signal Low washer ind Low wshr ind ctrl Malfunction indicator lamp Mode Oil pres ind ctrl Oil pressure ind Perf shift ind Perf shift ind ctrl Pk lps Pnk Powertrain control module (left front side of engine compt, in air cleaner assy) Prndl position ind ctrl Radio- hvac fuse 15a Reset Right turn ind Right turn lamp ctrl S106 S202 S211 S230 S234 S270 S283 S284 Seat belt ind Seat belt ind ctrl Security ind Security ind ctrl Serial data Service vehicle soon ind (amber) Service vehicle soon ind ctrl Speedometer Splice pack (sp205) (below dash, right of steering column) Srl data Tachometer Trac off ind Trac off ind ctrl Trip reset input Trip reset switch Windshield washer solvent level switch (right front of eng compt, in washer fluid reservoir)
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Buick Regal GSE 1999 List of elements for Courtesy Lamps Wiring Diagram for Buick Regal GSE 1999: 65 (body harn, below right front seat) s322 (quarter courtesy and reading lamp harn, approx 5 cm from 8-pin in-line conn, behind right "c" pillar) (right side of rear shelf) g313 Body control module (bcm) (behind left side of dash, left of steering column) C16 C2 e Console compartment lamp Console compartment lamp switch Court lps (grd) Court lps on D15 D16 Dome Dome lamp Door ajar Driver dr ajar Fuse block G201 (behind right side of dash) G204 (below dash, left side of steering column) G309 (left front door sill) G313 (right side of rear shelf) Headlamp switch Hot at all times Hot in accy and run I/p compart- ment lamp switch Inadv power bus fuse 15a Inside rear view mirror Left front door courtesy lamp Left front door lock Left i/p courtesy lamp Left rear door lock Left roof rail courtesy/ reading lamp Left sunshade mirror lamp Nca Off Power drop fuse 10a Rear compartment courtesy lamp Rear compartment lid ajar switch Right front door courtesy lamp Right front door lock Right i/p courtesy lamp Right rear door lock Right roof rail courtesy/ reading lamp Right sunshade mirror lamp S214 (i/p harn, right side of steering column) S230 S283 S303 S320 (body harn, below right front seat) S321 (body harn, under right front door pillar) a S335 S383 S384 (quarter courtesy and reading lamp harn, approx 25 cm from left lighted visor mirror breakout) S385 S386 (quarter courtesy and reading lamp harn, approx 35 cm from 8-pin in-line conn, behind right "c" pillar) S387 S388 S420 S504 S604 S930 Theater dim (grd) Theater dim 1 Theater dim 2 Trunk ajar (bat) Instrument Illumination Wiring Diagram for Buick Regal GSE 1999 List of elements for Instrument Illumination Wiring Diagram for Buick Regal GSE 1999: 61 (1999 only) s295 (2000-01) cigar lighter (body harn, below right front seat) s302 (c60/cj3) (cj2) (cj2) c16 (i/p harn, right of steering column) s277 (i/p harn, right side of dash) Ashtray lamp (century) Automatic transaxle control position indicator bulb (regal) Dome Driver seat heater & traction control switch Driver seat heater switch E16 Electronic traction control switch (regal) Fog lamp switch G201 (behind right side of dash) G204 (below dash, left side of steering column) G205 (below dash, right side of steering column) G309 (left front door sill) Grd Head Headlamp switch Heater- a/c control High Hot at all times I/p fuse block Illum Inflatable restraint steering wheel module coil Instrument cluster Left door lock switch Left front window switch Low Lp park fuse 20a Off Outside remote control rear view mirror switch Panel dimming fuse 7.5a Park Passenger seat heater switch Radio Radio control switches Red Right door lock switch Right front window switch S211 S230 S241 (i/p harn, below radio) S267 S283 S303 S504 S506 (left front door harn, in left front door) S604 S606 (right front door harn, in right front door) Strg whl cont fuse 2a Tail, lic lamps fuse 15a Underhood fuse block Vf dim dis sig Vf dim sig W/ heated seats W/o heated seats
POWER DISTRIBUTION Power Distribution Wiring Diagram (2 of 3) for Buick Regal GSE 1999 List of elements for Power Distribution Wiring Diagram (2 of 3) for Buick Regal GSE 1999: 85 (body harness, top of floor tunnel between front seats) s323 (body harness, under left side of rear seat) (cj2) (cj2) (c60/cj3) (i/p harness, 4 cm from radio breakout) (i/p harness, near blower motor) (i/p harness, near steering column) (i/p harness, right side of steering column) s220 Accessory time delay relay (behind i/p compt, under- side of cross- car beam) Accy Automatic transaxle control Bcm acc fuse 10a Body control module Body control module (below left side of dash) Bulb test C13 C201 C5 c (c60/cj3) Console compt lamp switch (regal) Crank signal, bcm, cluster fuse 10a Cruise control module Cruise control release switch Cruise control switch Cruise fuse 10a Daytime running lamp control module Driver seat heater switch From gen d fuse (diagram 1 of 3) From ignition switch (diagram 2 of 3) From inadv power bus fuse (diagram 1 of 3) Fuse block Heater- a/c control Heater- a/c control (c60/cj3) Hvac fuse 10a Ign 0,cluster, pcm & bcm fuse 10a Ign1 maxi fuse 30a Ign2 maxi fuse 60a Ignition switch Inflatable restraint steering wheel coil Inside rearview mirror Instrument cluster Left electric actuator Left front window switch Left radio control switch Lock Low blower fuse 20a Off Park lock fuse (regal) 10a Passenger seat heater switch Pnk Power drop fuse 10a Powertrain control module Provisions for mobile telephone handset Pwr windows pwr sunroof circuit breaker 30a Radio Radio fuse (w/o rap) 2a Radio fuse 2a Rear window defogger relay Red Right electric actuator Run S233 S234 (i/p harness, right side of steering column) S240 S249 S263 S270 (i/p harn, behind right side of dash) S410 Start Sunroof module To crank signal fuse (diagram 2 of 3) To ign main relay (diagram 3 of 3) To low blower fuse (diagram 2 of 3) To s228 (diagram 3 of 3) Under- hood accessory wiring junction block Underhood accessory wiring junction block Underhood accessory wiring junction box Vacuum electric solenoid (cj2) W/ heated seats W/ rap W/ sun- roof W/0 heated seats W/o rap Wind- shield wiper/ washer switch Windshield wiper motor Wiper fuse 25a Power Distribution Wiring Diagram (3 of 3) for Buick Regal GSE 1999 List of elements for Power Distribution Wiring Diagram (3 of 3) for Buick Regal GSE 1999: 51 (3.1l) (3.8l) (engine harn, top of engine) (3.8l) (injector harn, 2 cm from injector 2 breakout) (3.1l) (i/p harness, right side of dash) (not used) A/c clu relay A11 Abs fuse 10a Air bag fuse 10a Automatic transaxle Automatic transaxle control B12 Body control module Btsi park lock fuse 10a (regal) C12 Cluster fuse 10a Crank relay Daytime runnning lamp control module Drl fuse 10a Electronic brake control module/ electronic brake traction control module Elek ign fuse 15a Eng emis fuse 10a Evaporative emissions canister purge solenoid valve Evaporative emissions canister vent solenoid valve F/injr fuse 15a From ign1 e maxi fuse (diagram 2 of 3) From ignition switch (diagram 2 of 3) Fuel injector Fuse block G129 (left of starter, on trans- axle stud) Heated oxygen sensor 1 Heated oxygen sensor 2 Ign main relay Ignition control module Inflatable restraint sensing and diagnostic module Instrument cluster Mass air flow sensor Nca Oxy sen fuse 15a Pcm,bcm u/h relay fuse 10a Pnk Powertrain control module S106 S109 S228 Stop lamp switch Supercharger bypass valve (3.8l vin 1) Trans fuse 10a Turn signal switch Turn signals, corn lps fuse 10a Underhood accessory wiring junction block
POWER DOOR LOCKS Power Door Lock Wiring Diagram for Buick Regal GSE 1999 List of elements for Power Door Lock Wiring Diagram for Buick Regal GSE 1999: 53 (body harn, center floor on left side of tunnel) s315 (body harness, below right door speaker, 44cm from power door breakout) s314 (century, regal) (century,regal) (intrigue) (intrigue) (century, regal) (intrugue) Abs-bcm fuse 10a (intrigue) All drs lock Battery Battery (b+) Bcm fuse 10a (century, regal) Body control module (behind left side of dash, left of steering column) C14 C15 D12 D13 Door lock fuse 20a Door lock relay (behind glove box, mounted to cross- car body beam) Doors lock Doors unlock Driver unlk Fuse block (behind right of dash in right door opening) G201 (behind right side of the glove box) G201 (right side of dash) G204 (left side of steering column) G205 (right side of steering column) G309 (forward of driver's seat) G309 (left front door sill) Ground Hot at all times Interior lights system Left front door lock actuator Left front door lock switch Left rear door lock actuator Lock Pass drs unlk Radio, hvac, cluster, cel tel fuse 15a (century, regal) Radio, hvac, cluster, data line fuse 15a (intrigue) Remote control door lock receiver (rke) (left side of dash, on right side of instrument cluster) Rfa link Right front door lock actuator Right front door lock switch Right rear door lock actuator S202 S211 S230 S269 S283 S303 S504 Tan Unlock
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Buick Regal GSE 1999 List of elements for Electrochromic Mirror Wiring Diagram for Buick Regal GSE 1999: 28 (body wiring harness, approximately 6 cm from grommet, under left rear seat) s424 (right side of rear shelf) g313 (windshield side) ambient sensor A6 c2 B c1 C1 f6 Fuse block (behind right side of dash, in right door opening) Gnd Headlight sensor (mirror side) Hot at all times Hot in run Hvac fuse 10a Inside rearview mirror (day-night) Interior lights system Left mirror switch Mirror on Off R/cmpt rel fuse 7.5a Resets to daytime high reflectivity in reverse Right mirror switch S233 S323 S385 Solid state Transaxle range switch (left side of engine compart- ment, on transaxle) Underhood (u/h) electrical center (mounted to right strut tower) W/ heated seats W/o heated seats Power Mirrors Wiring Diagram for Buick Regal GSE 1999 List of elements for Power Mirrors Wiring Diagram for Buick Regal GSE 1999: 21 (1998) (1999) (left front door sill) g309 Buick Driver's seat) g309 Ecb Fuse block Hot at all times Interior lights system Left mirror Left outside rearview mirror Mirror motor pack Nca Olds- mobile Outside remote control rearview mirror switch Power mirrors fuse 10a 2a Right mirror Right outside rearview mirror Right/ left motor S504 Up/ down motor
POWER SEATS 6-Way Power Seat Wiring Diagram for Buick Regal GSE 1999 List of elements for 6-Way Power Seat Wiring Diagram for Buick Regal GSE 1999: 23 (left front door sill) Back Down Driver seat adjuster motor assembly Driver seat adjuster switch Entire seat For- ward Front height Front passenger seat adjuster motor assembly Front passenger seat adjuster switch Front vertical adjuster motor Fuse block G309 Horizontal adjuster motor Hot at all times Nca Power seats circuit breaker 30a Rear height Rear vertical adjuster motor S303 S326 S330 Tan Heated Seats Wiring Diagram for Buick Regal GSE 1999 List of elements for Heated Seats Wiring Diagram for Buick Regal GSE 1999: 29 Driver heated seat back element Driver heated seat control module Driver heated seat cushion cover Driver heated seat cushion element Driver heated seat switch Driver heated seat thermistor Front passenger heated seat control module G309 (left front door sill) Ground Hot at all times Hot in run Hvac fuse 10a I/p fuse block Interior lights system Lh heated seat fuse 15a Lo/hi input Nca On input Passenger heated seat back element Passenger heated seat cushion cover Passenger heated seat cushion element Passenger heated seat switch Passenger heated seat thermistor Pnk Rh heated seat fuse 15a S303 S323 S333 Sensor input
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagrams for Buick Regal GSE 1999 List of elements for Power Top/Sunroof Wiring Diagrams for Buick Regal GSE 1999: 23 (not used) Battery Close G313 (right side of rear shelf) Gnd Hot in accy, run, & retained accessory power I/p fuse block (behind right side of dash, in right door opening) Limit switch module (center rear of sun roof module) Ls1 Ls2 Ls3 Open Pos 1 Pos 2 Pos 3 Power windows system Pwr windows pwr sun roof circuit breaker 30a Red S410 S414 Sun roof actuator (center rear of sun roof module) Sun roof module (right corner of sun roof) Sun roof switch
POWER WINDOWS Power Window Wiring Diagram for Buick Regal GSE 1999 List of elements for Power Window Wiring Diagram for Buick Regal GSE 1999: 47 (buick) (buick, olds) (buick: body harn, on floor under driver's seat) (chev, pontiac) (chev: crossbody harn below right front seat) (olds: body harn, center of floor behind front seats) (oldsmobile) (pontiac: body harn, on floor near center of vehicle) Buick oldsmobile Buick, olds chevrolet Chevrolet Down Ecb Express Express down module Fuse block (behind right side of dash, in glove box opening) Fuse block (behind right side of dash, in right door opening) Fuse block (on right side of dash) G309 (left front door sill) G316 (right front door sill) Hot in acc, run or during rap Hot in run Illumination lamp Interior lights system Left front Left front window motor Left front window switch Left rear Left rear window motor Left rear window switch Lock out switch Pontiac Power window circuit breaker 20a Pwr wdo circuit breaker 25a Pwr window pwr sunroof circuit breaker 30a Right front Right front window motor Right front window switch Right rear Right rear window motor Right rear window switch S303 S307 S310 s410 S504 S604 Tan
RADIO Radio Wiring Diagrams, with Amplifier for Buick Regal GSE 1999 List of elements for Radio Wiring Diagrams, with Amplifier for Buick Regal GSE 1999: 101 (1999) (2000) (behind dash, right of steering column) Am/fm Ant in Ars Bare Battery Cd com Cd drain Cd in Computer data lines system Drain E & c data E10 E11 E12 E13 E14 E15 E16 F10 F11 F12 F13 F14 F15 F16 Front window antenna grid Fuse block Fuse out Fused feed G202 G202 (behind dash, right of steering column) Ground Hot at all times Hot in acc or run Illum Inflatable restraint steering wheel control module Interior lights system Left front midrange speaker Left front tweeter speaker Left radio control switches Left rear speaker Lf audio Lf spkr Lf tweeter Low frequency audio amplifier (in rear compartment, mounted to bottom of rear deck) Lr audio Lr feed Lr rtn Lr spkr Lt cd sig Mid- range Mute Nca Radio Radio antenna module (on rear window header panel) Radio fuse 2a Radio prem fuse 15a (2000) Radio pwr Radio, hvac fuse 15a (1999) Radio, hvac, rfa, cel tel, cluster fuse 15a (2000) Rap pwr Rear window antenna grid Red Remote cd player Remote radio fuse 15a (1999) Rf audio Rf feed Rf low Rf rtn Rf spkr Rf tweeter Right front midrange speaker Right front tweeter speaker Right radio control switches Right rear speaker Rr audio Rr feed Rr rtn Rr spkr Rt cd sig S202 S255 (1999) S301 S418 S440 Scan Seek dn Seek up Source Strg ctrl Sub feed Sub rtn Sub- woofer Tan Vol dn Vol up W/ adaptive reception system W/o adaptive reception system Radio Wiring Diagrams, without Amplifier for Buick Regal GSE 1999 List of elements for Radio Wiring Diagrams, without Amplifier for Buick Regal GSE 1999: 75 (1999) (1999) (2000) A c1 A c2 Am/fm Ant in Ars B c2 Battery C1 a C1 b C2 a C2 b Computer data lines system E & c data E10 E11 E12 E13 E14 E15 E16 F10 F11 F12 F13 F14 F15 F16 Front window antenna grid Fuse block Fuse out G202 (behind dash, right of steering column) Ground Hot at all times Hot in acc or run Illum Inflatable restraint steering wheel control module Interior lights system Left front door speaker Left front tweeter Left radio control switches Left rear speaker Lf spkr Lr spkr Mute Nca Radio Radio antenna module (on rear window header panel) Radio fuse 2a Radio pwr Radio, hvac fuse 15a (1999) Radio, hvac, rfa, cel tel, cluster fuse 15a (2000) Rap pwr Rear window antenna grid Red Rf spkr Right front door speaker Right front tweeter Right radio control switches Right rear speaker Rr spkr S202 S255 S301 s418 Scan Seek dn Seek up Source Strg ctrl Tan Vol dn Vol up W/ adaptive reception system W/o adaptive reception system
SHIFT INTERLOCKS Electric Park Lock Wiring Diagram for Buick Regal GSE 1999 List of elements for Electric Park Lock Wiring Diagram for Buick Regal GSE 1999: 8 Automatic transaxle control (btsi) (center of console) G201 (behind the right side of the glove box) Hot in off, run or start I/p fuse block (right side of dash, in right door opening) Park lock fuse 10a Park position switch (closed in park) S230 Steering column electric park lock (in steering column, near ignition key cylinder) Shift Interlock Wiring Diagram for Buick Regal GSE 1999 List of elements for Shift Interlock Wiring Diagram for Buick Regal GSE 1999: 21 (on transaxle stud) A12 Automatic transaxle control (btsi) (center of console assembly) Automatic transmission shift lock control actuator (btsi) (in column shift) Btsi park lock fuse 10a Btsi solenoid C11 Century, intrigue G129 Hot in run, bulb test or start I/p fuse block (right side of dash, in right door opening) Park lock solen- oid Pnk Pnk a Regal Regal century, intrigue S105 S106 (intrigue) (regal, century) Stoplamp switch (open when brake pedal depressed) (on brake pedal support) Transaxle range switch (on top right rear of transaxle) Underhood fuse block
STARTING/CHARGING Charging Wiring Diagram for Buick Regal GSE 1999 List of elements for Charging Wiring Diagram for Buick Regal GSE 1999: 28 (not used) a A8 c1 B12 Battery Charge ind Cluster fuse 10a Computer data lines Fuse block (behind right side of dash) Fusible link (10 ga- rust) G101 (right side of engine compt, at base of battery) G129 (left of starter, on transaxle stud) Gen fuse 10a Gen. term. f monitor Gen. term. l output c2 Hot at all times Hot in run, bulb test or start Instrument cluster L generator P b+ Pnk Power distribution system Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly) Red Ser. data class 2 c1 Solid state Splice pack (s205) (below dash, right of steering column) Starter solenoid Underhood accessory wiring junction block (on right strut tower) Starting Wiring Diagram for Buick Regal GSE 1999 List of elements for Starting Wiring Diagram for Buick Regal GSE 1999: 34 Accy B red Battery Bulb test Charging circuit (fuse link) Crank maxifuse 40a Crank relay Crank signal Crank signal fuse 10a Fuse block (behind right side of dash) G101 (right side of engine compt, at base of battery) G129 (left of starter, on transaxle stud) Hold- in coil Hot at all times Ign main 1 maxifuse 40a Ignition switch Lock Nca Off Pcm- bcm fuse 10a Pnk Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly) Pull- in coil Red Remote battery stud Run S228 S234 Start Starter enable control Starter motor Starter solenoid Transaxle range switch (on transaxle) Underhood accessory wiring junction block (on right strut tower)
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Buick Regal GSE 1999 List of elements for Supplemental Restraint Wiring Diagram for Buick Regal GSE 1999: 40 (driver's seat harn, below driver's seat) A10 A11 A12 A13 A14 A15 A16 A17 A18 Air bag fuse 10a Air bag indicator B12 Body control module (bcm) (behind left side of dash) C11 Cluster fuse 10a Connector (dlc) (under left side of dash, right of steering column) Data link Driver high Driver low Fuse block (behind right side of dash) G201 (behind the right side of the glove box) G309 (left front door sill) Ground Hot in run, bulb test or start Ign pos volt Inflatable restraint i/p module (upper right side of dash) Inflatable restraint sensing and diagnostic module (sdm) (below carpet, under right front seat) Inflatable restraint steering wheel module (on front of steering wheel) Inflatable restraint steering wheel module coil Instrument cluster Nca Pass high Pass low Pnk S330 Seat belt switch Serial data Shorting bar a Sp205 (right side of steering column)
TRANSMISSION
3.8L 3.8L VIN 1, A/T Wiring Diagram, 4T65-E for Buick Regal GSE 1999 List of elements for 3.8L VIN 1, A/T Wiring Diagram, 4T65-E for Buick Regal GSE 1999: 70 1-2 shift sol 2-3 shift sol 5v reference a A/t iss sensor hi A/t iss sensor lo Automatic transaxle (4t65-e) Automatic transaxle fluid pressure manual valve position switch Automatic transaxle fluid temperature sensor Automatic transaxle input shaft speed sensor B12 Battery in Body control module & instrument cluster Class ii data Cluster fuse 10a Data link connector (partial) (below dash, right of steering column) Ecm fuse 10a Ect sensor in Ect sensor return Eng emis fuse 10a Engine controls system Engine coolant temperature sensor (below throttle body) Fuse block (behind right side of dash) G129 (left side of engine on transaxle stud) G129 (lower left side of engine on transaxle stud) Hot at all times Hot in run, bulb test or start Ign 0 fuse 10a Ignition 1 in Ignition wake up in Instrument cluster Malfunction indicator lamp Mil ctrl Pc sol hi Pc sol lo Pcm ground Pcm-bcm fuse 10a Pnk Powertrain control module (left front side of engine compt, in air cleaner assembly) Pressure control sol Red Rev S105 S106 S270 Splice pack sp205 (below dash, right of steering column) Stop lamp switch Tan Tcc pwm sol Tcc release Tcc release in Tcc/ brake switch Tcc/brake sw in Tft sensor in Tft sensor return Throttle position sensor (on throttle body assembly) Tp sensor in Tp sensor return Tr sw in-a Tr sw in-b Tr sw in-c Tr sw in-p Trans fuse 10a Trans range a in Trans range b in Trans range c in Transaxle range switch (top of transaxle) Underhood accessory wiring junction block (mounted to right strut tower) Vehicle speed sensor (lower right rear of engine compt, end of transaxle) Vss hi (signal) Vss lo (ground) 3.8L VIN K, A/T Wiring Diagram, 4T65-E for Buick Regal GSE 1999 List of elements for 3.8L VIN K, A/T Wiring Diagram, 4T65-E for Buick Regal GSE 1999: 70 1-2 shift sol 2-3 shift sol 5v reference a A/t iss sensor hi A/t iss sensor lo Automatic transaxle (4t65-e) Automatic transaxle fluid pressure manual valve position switch Automatic transaxle fluid temperature sensor Automatic transaxle input shaft speed sensor B12 Battery in Body control module & instrument cluster Class ii data Cluster fuse 10a Data link connector (partial) (below dash, right of steering column) Ecm fuse 10a Ect sensor in Ect sensor return Eng emis fuse 10a Engine controls system Engine coolant temperature sensor (below throttle body) Fuse block (behind right side of dash) G129 (left side of engine on transaxle stud) G129 (lower left side of engine on transaxle stud) Hot at all times Hot in run, bulb test or start Ign 0 fuse 10a Ignition 1 in Ignition wake up in Instrument cluster Malfunction indicator lamp Mil ctrl Pc sol hi Pc sol lo Pcm ground Pcm-bcm fuse 10a Pnk Powertrain control module (left front side of engine compt, in air cleaner assembly) Pressure control sol Red Rev S105 S106 S270 Splice pack sp205 (below dash, right of steering column) Stop lamp switch Tan Tcc pwm sol Tcc release Tcc release in Tcc/ brake switch Tcc/brake sw in Tft sensor in Tft sensor return Throttle position sensor (on throttle body assembly) Tp sensor in Tp sensor return Tr sw in-a Tr sw in-b Tr sw in-c Tr sw in-p Trans fuse 10a Trans range a in Trans range b in Trans range c in Transaxle range switch (top of transaxle) Underhood accessory wiring junction block (mounted to right strut tower) Vehicle speed sensor (lower right rear of engine compt, end of transaxle) Vss hi (signal) Vss lo (ground)
TRUNK, TAILGATE, FUEL DOOR Trunk, Tailgate, Fuel Door Wiring Diagrams for Buick Regal GSE 1999 List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams for Buick Regal GSE 1999: 13 B12 Body control module (bcm) (behind left side of dash, left of steering column) C15 Computer data lines system Door locks fuse 20a Fuse block (behind right side of dash, in rt door opening) G313 (right side of rear shelf) Hot at all times Rear compart- ment lid lock release actuator Rear compartment lid release relay (behind glove box, mounted to cross- car beam) Remote control door lock receiver (rcdlr) (left side of dash, on right side of instrument cluster) S269 S406
WARNING SYSTEMS Warning System Wiring Diagrams for Buick Regal GSE 1999 List of elements for Warning System Wiring Diagrams for Buick Regal GSE 1999: 67 (body harn, on floor, under passenger's seat) s322 (left side of engine, in air cleaner) powertrain control module (pcm) (w/ heated seats) (w/o heated seats) s303 Accessory Ajar B12 Bcm acc fuse 10a Body control module (bcm) (behind left side of dash, left of steering column) C10 C11 C12 C13 C16 Cluster fuse 10a Computer data lines system Crank Crank signal, bcm clstr fuse 10a Ctsy D16 Daytime running lamp (drl) control module (behind left side of dash) Door ajar Fuse block G205 (below dash, right side of steering column) G309 (left front door sill) Ground Head Headlamp switch Hot at all times Hot in accy Hot in off, bulb test, run or start Hot in run, bulb test or start Hot in start Ign 0, cluster, pcm & bcm fuse 10a Igni- tion Ignition 0 Ignition 1 Ignition switch (key in ignition switch) Instrument cluster Interior lights system Key in ign Left front door lock (ajar indicator switch) Lp park fuse 20a Off Or run P/b input P/b switch signal alarm Park Park brake (ign 1) Park brake indi- cator switch Park lp off Pcm, bcm u/h relay fuse 10a Pnk S211 S234 S270 S330 S504 Seat belt switch Seat belt switch (ign 1) Serial data class Serial data class 2 Splice pack sp205 (below dash, right side of steering column) Tan Tire inflation Tire inflation reset switch (in fuse block) Under- hood acces- sory wiring junction block
WIPER/WASHER Wiper/Washer Wiring Diagram for Buick Regal GSE 1999 List of elements for Wiper/Washer Wiring Diagram for Buick Regal GSE 1999: 17 Fuse block (behind right side of dash) G201 (behind the right side of the glove box) G204 (below dash, left side of steering column) Hot in acc or run Mist Off Pulse Red S230 S249 Washer switch Windshield washer pump Windshield wiper motor (on left side of firewall) Windshield wiper/washer switch Wiper fuse 25a Wiper motor controller Wiper switch
