Diagram sections — 29 (57 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES CRUISE CONTROL DEFOGGERS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Compressor Wiring Diagram for Chevrolet Blazer 2004 List of elements for Compressor Wiring Diagram for Chevrolet Blazer 2004: 32 (engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106 (rear of right cylinder head) g102 (rear of right cylinder head) g103 A/c A/c comp rly ctrl A/c compressor clutch A/c compressor clutch diode A/c compressor clutch relay A/c fuse 10a A/c high pressure switch (on rear of a/c compressor) A/c low pressure switch (at a/c accumulator) A/c low sw signal A/c request signal Bi-level a/c Blend D12 Defrost Heat Hot at all times Hot in run Hot in run & start Hvac control assembly Hvac fuse 9 20a I/p fuse block (on left end of dash) Ign e fuse 10a Max a/c Nca Off Powertrain control module (pcm) (on right side of engine compartment) S103 (engine harn, 19.5 cm from throttle position sensor) Underhood fuse block (on top of left front inner wheelwell) Vent Manual A/C Wiring Diagram for Chevrolet Blazer 2004 List of elements for Manual A/C Wiring Diagram for Chevrolet Blazer 2004: 67 (behind right side of dash) g203 (behind upper left end of dash) g200 (dash harness, between breakouts for radio & bcm connector 8 cm from breakout to radio) s205 (engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106 (left rear of engine compartment) g117 (rear of right cylinder head) g102 (rear of right cylinder head) g103 87a A/c A/c comp rly ctrl A/c compressor clutch A/c compressor clutch diode A/c compressor clutch relay A/c cycling sw signal A/c fuse 10a A/c high pressure switch (on rear of a/c compressor) A/c low pressure switch (at a/c accumulator) A/c request signal Air temperature actuator (behind right side of dash, on heater case) Bi-level Bi-level a/c Blend Blower motor (on right rear of engine compartment) Blower motor relay (on center rear of engine compartment) Blower motor resistor (on right rear of engine compartment, on blower case) Blower switch Connector) s104 D (not used) D12 Def Heat High Hot at all times Hot in park & head Hot in run Hot in run & start Hvac 1 fuse 21 10a Hvac control assembly Hvac fuse 30a Hvac fuse 9 20a I/p fuse block (on left end of dash) If equipped Ign e fuse 10a Illum (x4) Illum fuse 12 10a Low Max a/c Med Mode door switch Nca Norm Off Pickup Power mirrors system (automatic day/night mirror) Powertrain control module (pcm) (on right side of engine compartment) S103 (engine harn, 19.5 cm from throttle position sensor) S118 (body harness, between breakouts to blower motor & blower motor relay) S215 (behind hvac assembly) S217 (dash harness, in breakout to heater controller connectors, 6 cm into breakout) Servo amplifier Sp202 (strapped to body harness, at left center of dash) Sp203 (dash harness, in front of ashtray) Tan Temp control Underhood fuse block (on top of left front inner wheelwell) Utility Vent
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram for Chevrolet Blazer 2004 List of elements for Anti-lock Brakes Wiring Diagram for Chevrolet Blazer 2004: 51 (left side of dash) data link connector (dlc) A10 A12 Abs fuse 22 10a Abs fuse 60a Anti-lock indicator Axle switch sig Axle switch signal Body control module (bcm) (under dash, on heater case) Brake fluid level switch (on master cylinder) Brake fluid lvl sig Brake warning indicator Class 2 Computer data lines system Cruise control system Electronic brake control module (ebcm) (near left front inner fender, on brake pressure modulator valve) From manual a/c blower motor resistor breakout) Front axle indicator switch (at front axle, to right of differential) G102 (on rear of right cyl head) G110 (near windshield washer pump) Ground distribution system Hot at all times Hot in run I/p fuse block (on left end of dash) Ignition 3 Instrument panel cluster Left front wheel speed sensor Lf whl spd sens ref Lf whl spd sens sig Nca Powertrain control module (pcm) (on right side of engine compt) Radio Rdo batt fuse 19 15a Red Rf whl spd sens ref Rf whl spd sens sig Right front wheel speed sensor S121 (in body harn, between ebcm & c102 breakout) S203 S240 S276 Serial data Sp201 (strapped to body harn, near body relay block) Stoplamp switch (on brake pedal support bracket) Tan Tcc brake switch sig Underhood fuse block Underhood fuse block (on top of left front inner wheelwell) Vehicle speed signal Vss W/ electric shift control (2 speed)
ANTI-THEFT Forced Entry Wiring Diagram for Chevrolet Blazer 2004 List of elements for Forced Entry Wiring Diagram for Chevrolet Blazer 2004: 50 (utility) 2 door utility, pickup 4 door utility A12 B10 B11 Battery Body control module (under dash, on heater case) C211 Data link connector (under left side of dash) Door sw sig Driver door jamb switch Driver door lock cylinder switch Drv dr switch Fr handle sw Front passenger door jamb switch Front passenger door lock cylinder switch G200 (behind upper left end of dash) G202 (behind upper left end of dash) G203 (behind right side of dash) G205 (behind right side of dash) G450 (left rear corner of vehicle) Ground Horn relay Horns system Hot at all times Ignition key alarm switch Instrument panel cluster Key in ign Key sw sig Left rear door jamb switch Liftgate sw Pickup Rear window wiper cutout & liftglass ajar jamb switch (utility) Right door handle switch Right rear door jamb switch S305 (body harn, 22.5 cm from right rear door jamb switch breakout) S427 S501 S601 Security indicator Serial data Splice pack sp201 (on body harn, near body relay block) Splice pack sp202 (on body harn, left center of dash) Splice pack sp203 (dash harn, in front of ashtray) Splice pack sp204 (on body harn, center front of dash) Tan Tbc fuse 10a Underhood fuse block (top of left front inner wheelwell) Utility/crew cab Pass-Key Wiring Diagram for Chevrolet Blazer 2004 List of elements for Pass-Key Wiring Diagram for Chevrolet Blazer 2004: 22 A12 Battery Body control module (under dash, on heater case) Data link connector (under left side of dash) Engine controls system (fuel pump relay) G200 (behind upper left end of dash) Ground Hot at all times Passlock sensor (in steering column, near lock cylinder) Powertrain control module (right side of engine compt) Remote control door lock receiver (behind lower left side of dash) Security hall effect sensor Sensor pwr Sensor ret Sensor sig Serial data Splice pack sp201 (on body harn, near body relay block) Splice pack sp202 (on body harn, left center of dash) Tamper hall effect sensor Tbc fuse 10a Underhood fuse block (on top of left front inner wheelwell) W/ remote keyless entry
BODY CONTROL MODULES Body Control Modules Wiring Diagram for Chevrolet Blazer 2004 List of elements for Body Control Modules Wiring Diagram for Chevrolet Blazer 2004: 85 (envoy) (others) 12v ref 5v reference A10 A11 A12 Ambient light sensor (on top left side of dash) Ambient light sensor sig Anti-theft system B10 B11 B12 Battery positive voltage Body control module (under dash, on heater case) Class 2 serial data signal Computer data lines system Courtesy lamp relay ctrl Courtesy lamp sw sig Cruise fuse 3 10a Door lock ctrl Door locks system Door unlock ctrl Driver door key sw sig Drl relay ctrl Engine controls system Exterior lights system Flash-to-pass sw sig Fog lamp relay ctrl Front fog lamp switch sig G200 (behind upper left end of dash) Gauges fuse 4 10a Gmcm serial data Ground Headlamp hi beam relay ctrl Headlamp off sig Headlights system Hlp dimmer sw hi beam sig Horn relay ctrl Horns system Hot at all times Hot in run Hot in run or start Hot with headlamp switch in head or park I/p fuse block Ignition 1 voltage Ignition 3 voltage Instrument cluster system Interior lamp defeat sw sig Interior lamp relay coil ctrl Interior lights system Key in ignition switch Led dimming signal Left front door open switch sig Left front door unlock relay ctrl Left front turn sw sig Left seat belt switch sig Low ref Park brake switch (at base of park brake assembly) Park brake switch sig Park lamp relay ctrl Park lp fuse 5 10a Pnk Power distri- bution system (w/ remote keyless entry) Power distribution system (rap) Rap relay coil ctrl Rear compt lock mtr unlock Rear doors/lift glass switch Remote keyless entry circuit Right front door latch switch sig Right front turn sw sig S283 Security system sensor sig Sp202 (left center of dash) Splice pack sp200 (in forward lamp harness, to left rear of radiator support) Tan Tbc fuse 10a Tow/hall switch sig Transmission system Trunk release relay ctrl Trunk, tailgate, fuel doors system Underhood fuse block (on top of left front inner wheelwell) Vehicle speed sensor sig Warning system Warning systems
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Chevrolet Blazer 2004 List of elements for Computer Data Lines Wiring Diagram for Chevrolet Blazer 2004: 28 (behind right kick panel) transfer case shift control module (not used) A12 Body control module (under dash, on heater case) Body relay block (behind left side of dash, near dash fuse block) Cigar ltr fuse 2 15a Class 2 serial data Data link connector (dlc) (under left side of dash) Driver information center Electronic brake control module (ebcm) (near left front inner fender, on brake pressure modulator valve) G105 (on rear of left cylinder head) G200 (behind upper left end of dash) Ground distribution system Hot at all times I/p fuse block (on left end of dash) Inflatable restraint sensing & diagnostic module (under console & carpet, between front seats) Instrument panel cluster Memory seat module (under left front seat) (if equipped) Powertrain control module (pcm) (on right side of engine compartment) Radio S152 S276 Sp202 (strapped to body harn, at left center of dash) Splice pack sp201 (strapped to body harn, near i/p fuse block) Transfer case shift control module (w/ 4wd) (behind right kick panel) Underhood fuse block (on top of left front inner wheelwell) W/ trip computer W/ two speed electronic control
CRUISE CONTROL Cruise Control Wiring Diagram for Chevrolet Blazer 2004 List of elements for Cruise Control Wiring Diagram for Chevrolet Blazer 2004: 56 (on left side of firewall) 2-speed push button control 2.2l 4.3l 4wd only A/t A12 A13 A14 A15 Abs fuse 22 10a Antilock brake system B (2.2l) (4.3l) Bare Body computer system Body relay block (behind left side of dash) Brake cutout 1 Brake/clutch signal C116 (near top right rear of transmission) Clutch pedal position & cruise control Cruise control module Cruise fuse 3 10a Cruise on/off input Cruise status Cut-out switch (clutch pedal support bracket) D (2.2l) (4.3l) Exterior lights system G104 (left rear of cylinder head) G105 (4.3l) (left rear of cylinder head) (2.2l) (right rear of engine) G117 (left rear of engine compt) Ground Hot in run I/p fuse block (left end of dash) Ignition Instrument cluster system M/t Multifunction switch Off Powertrain control module (right front of engine compt) R/a Resume/accel input S134 S138 (body harn, left rear of engine compt) S140 S152 S203 (4.3l) Set sw Set/coast input Sp200 (body harn, center front of dash) Stoplamp switch (brake pedal support bracket) Underhood fuse block (on top of left front inner wheelwell) Vehicle speed input Vehicle speed sensor (vss) (on rear of transmission) Vss Vss high Vss low
DEFOGGERS Defoggers Wiring Diagram for Chevrolet Blazer 2004 List of elements for Defoggers Wiring Diagram for Chevrolet Blazer 2004: 29 (behind right side of dash) g203 (behind right side of dash) g205 (behind upper left end of dash) g202 (right rear corner of vehicle) g420 Driver outside rear- view mirror Front passenger outside rearview mirror Hot at all times Hot in run Hot in run & start Htd mirror fuse 10a Hvac 1 fuse 21 10a Hvac control assembly I/p fuse block (on left end of dash) Ign e fuse 10a Illum Interior lights system Nca On led Rear window defogger grid Rear window defogger relay Rr defog fuse 30a S217 S501 S601 Splice pack sp203 (front of ashtray) Splice pack sp204 (center of dash) Timer circuit Underhood fuse block (on top of left front inner wheelwell) Utility vehicles only
ENGINE PERFORMANCE
4.3L VIN X 4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Blazer 2004 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Blazer 2004: 60 (body harn, near blower motor resistor) (rear of distributor) 12v ref 3-2 sol 5 v ref 5v ref Abs fuse 22 10a Battery C red Camshaft position sensor Ckp sig Class 2 data Clstr fuse 11 10a Clutch pedal position switch (on clutch pedal support bracket) Cmp sens Cpp sw Crankshaft position sensor (front of engine near crankshaft pulley) Ect sens G103 (right rear of cyl head) G105 (left rear of cyl head) G105 (left rear of cylinder head) Ground Heated oxygen sensor (bank 1 sensor 1) (in left exhaust pipe, front of converter) Heated oxygen sensor (bank 1 sensor 2) (in exhaust, after catalytic converter) Heated oxygen sensor (bank 2 sensor 1) (in right exhaust pipe, front of converter) Ho2s high Ho2s low Hot in off, run or start Hot in run I/p fuse block Ign 1 Inj 1 Inj 2 Inj 3 Inj 4 ctrl Inj 5 Inj 6 Knock sensor (top rear of engine) Ks sig Low ref Nca Off/crk/run P/n Park/neutral position switch (left side of transmission) Pnk Powertrain control module (right front of engine compt) Red S100 S106 S116 S138 S152 S203 Stoplamp switch (on brake pedal support bracket) Tan Tcc sw Trans sig a Trans sw b Trans sw c Trans sw p 4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Blazer 2004 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Blazer 2004: 31 1-2 shift sol 2-3 shift sol 3-2 shift sol A10 Automatic transmission Automatic transmission fluid pressure manual valve position switch B10 C10 Central sequential fuel injection D10 D2 sw D3 sw D4 sw E10 Ecm i fuse 15a Eng i fuse 10a Evaporative emission canister purge solenoid (top right center of engine) Evaporative emission canister vent solenoid (rear of fuel tank) Fuel inj Hot in run or start Lo sw Oxygen fuse 20a Pnk Pressure control solenoid valve Red Rev sw Tan Tcc pwm sol Tcc sol Transmission fluid temperature sensor Under- hood fuse block 4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Blazer 2004 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Blazer 2004: 37 (under left side of dash) data link connector 12v in A11 A12 Body control module (under dash, on heater case) Ecm b fuse 20a Eng spd Engine coolant temperature sensor (left cylinder head, between two rear spark plugs) Fuel pump & sender assembly (on top of fuel tank) Fuel pump prime connector Fuel pump relay Fuel tank pressure sensor (top of fuel tank) G102 (right rear of cylinder head) G105 (left rear of cylinder head) G402 (left rear crossmember) G402 (left rear frame rail) Gnd Hot at all times Instrument cluster Instrument cluster system Intake air temperature sensor (in fresh air intake duct) Maf sig Manifold absolute pressure sensor (top center of engine) Mass airflow sensor (maf) (on air intake assy) Mil input Pick-up Pnk Red S152 S422 (chassis harn, near breakout to fuel pump & sender assembly) S423 Splice pack 201 (left side of dash) Tan Tan b Throttle position sensor (on throttle body assembly) Underhood fuse block Utility 4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Blazer 2004 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Blazer 2004: 74 (not used) (right rear of cyl head) g103 (top rear of automatic transmission) c116 (m-m) 1-2 shift 12 v ref 2-3 shift 2wd 4wd A/c clu A/c low A/c req A/c system Anti-lock brake system Axle sw Charging system Cruise control system Cruise eng Distributor (top rear of engine) Electronic ignition control module (top right side of engine) Engine spd Evap purge Evap vent Fuel lev Fuel pmp rly G104 (left rear of cylinder head) G105 (left rear of cyl head) G117 (left rear of engine compt) Gen f Gen t/o Ground H02s htr low High voltage coil wire Ho2s htr high Ho2s htr low Iac a hi Iac a lo Iac b hi Iac b lo Iat sens Ic timing Idle air control valve (on throttle body assembly) Ign timing sig. Ignition coil (right side of engine) Ignition feed Low ref Maf sig Map sig Mil Nca Pc sol Pnk Pnk a Powertrain control module (right side of engine compt) Red S106 S134 S140 S152 Spark plugs Starting/ charging system Tach. sig. Tan Tank pres Tcc pwm sol Tcc sol Tft sensor Tp sens Trans sig a Trans sig c Transmission system Vehicle speed sensor (rear of transmission) Vss Vss hi Vss low
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Chevrolet Blazer 2004 List of elements for Back-up Lamps Wiring Diagram for Chevrolet Blazer 2004: 28 (a/t) (in body harn, 98 cm from rear door breakout) s309 (m/t) a (not used) B/u lp fuse 25a B11 c2 Back-up lamp switch (m/t) (left side of transmission) C b C1 (m/t) C1 f C3 a4 C3 b3 C8 c2 F3 c1 G450 (on left rear corner of vehicle) Hot in run or start Left backup lamp Mirrors system (automatic day/ night mirror) Park/neutral position & back-up lamp switch (left side of transmission) Pnk Right backup lamp S419 S420 S427 Trailer wiring provision Trl b/u fuse 10a Underhood fuse block (on top of left front inner wheelwell) Veh b/u fuse 15a Exterior Lamps Wiring Diagram for Chevrolet Blazer 2004 List of elements for Exterior Lamps Wiring Diagram for Chevrolet Blazer 2004: 95 (body harn, 10 cm before breakout to chmsl lamp) (in center front of dash) sp204 (in chassis harn, 8 cm from break- out to g402) s424 (in right taillamp jumper harn, 18 cm from taillamp harn pass- through) A5 c3 A6 c3 B1 haz pwr a1 turn pwr c1 flshr out B12 c1 B2 gnd Body control module (under dash, on heater case) Body relay block (behind left side of dash) C1 a4 C1 a8 C1 c1 C1 d11 C1 e2 C10 c1 C2 c1 C3 e4 Center high mount stop lamp Cruise control system D1 c3 D10 c1 E10 c1 E9 c1 F10 c1 F11 F12 c1 Fr prk fuse 10a G111 (left radiator support) G112 (right radiator support) G205 (right side of dash) G402 (rear of left frame rail) G450 (left rear corner of vehicle) Haz lp fuse 20a Hazard Head Headlamp switch Hot at all times Hot in run or start I/p fuse block Instrument cluster Interior lights system Left Left front marker lamp Left front park/ turn signal lamp Left rear license plate lamp Left turn in Left turn ind Lr prk fuse 10a Lt trn fuse 10a Lt turn fuse 10a Multi- function switch Nca Normal Off Park Park lamp relay Park lp fuse 20a Park rly ctrl Park/ turn signal lamps Pnk Prk lp fuse 5 10a Resistor Right Right front marker lamp Right front park/ turn signal lamp Right rear license plate lamp Right turn in Right turn ind Rr prk fuse 10a Rt trn fuse 10a S404 S405 S415 S416 S417 S419 S420 S423 S427 Sp100 (at left radiator support) Sp101 (at right radiator support) Stop lp fuse 20a Stoplamp switch (on brake pedal support bracket) Tr chmsl fuse 10a Trailer wiring provisions Trl prk fuse 10a Trl trn 10a Trr trn 10a Turn fuse 20a Turn signal/ hazard flasher module (behind right side of dash) Underhood fuse block Underhood fuse block (on top of left front inner wheelwell) Veh chmsl fuse 10a
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 3) for Chevrolet Blazer 2004 List of elements for Ground Distribution Wiring Diagram (1 of 3) for Chevrolet Blazer 2004: 72 (between icm & map sensor breakout, 8 cm from breakout tp icm) (not used) (not used) f (w/o trip) (w/ trip) A c2 A/c compressor clutch A/c compressor clutch diode A/c low pressure switch A/t A18 Ambient temperature sensor (w/ overhead console) Bare Battery Body relay block Brake fluid level switch Breakout to a/c comp and cutoff switch) Cruise control module Cylinder head) D12 Data link connector (dlc) Daytime running lamps (drl) relay Daytime running lamps (drl) relay (zr2) Driver information center (dic) (utility) Electronic brake control module Fuel pump relay G100 (lower right radiator support) G101 G102 (rear of right cylinder head) G103 (rear of right G104 (on left rear of cylinder head) G105 (rear of left cylinder head) G106 (right frame rail, forward of right front wheel) G107 (right front of eng block) G108 (right of radiator support, next to battery fuse) G110 (near windshield washer pump) G111 (left of radiator support, near sp100) G112 (right side of radiator support, near sp 101) Headlamp power relay Heated oxygen sensor (ho2s) (bank 1 sensor 1) shield Heated oxygen sensor (ho2s) (bank 1 sensor 2) Ignition control module Inflatable restraint sensing & diagnostic module Instrument panel cluster (ipc) Left front fog lamp Left front park/ turn signal lamp Left horn M/t Mass airflow (maf) sensor Nca Park/ neutral position (pnp) switch Powertrain control module (pcm) Rear window washer pump motor Remote control door lock receiver Right front fog lamp Right front park/ turn signal lamp Right horn S106 (eng harn, 7 cm from breakout to ho2s connector) S140 (eng harn, 13 cm from vss breakout) S140 (eng harn, 7 cm from vss breakout) S152 Secondary air injection reactor (air) pump Sp100 (in forward lamp harn, to left rear of radiator support) Sp101 (in forward lamp harn, to right inside of radiator support) Starter relay Underhood fuse block Utility Vehicle speed sensor (vss) shield Vehicle speed sensor shield W/ a/c W/ k18 W/ rke Windshield washer fluid pump Ground Distribution Wiring Diagram (2 of 3) for Chevrolet Blazer 2004 List of elements for Ground Distribution Wiring Diagram (2 of 3) for Chevrolet Blazer 2004: 91 (behind right side of dash, between c203 & (fleetside) (fleetside) right license lamp (not used) (pickup: rear frame rail crossmember, near fuel filler neck ground strap, utility: left rear frame rail) (sportside) (fleetside) (sportside) license lamp 4wd A12 Air temperature actuator Ashtray lamp Automatic transmission shift level position indicator lamp Automatic transmission shift lock actuator B12 Bare Blower motor (man a/c) Blower motor relay (man a/c) Body control module Body relay block Breakout) Cigar lighter Courtesy lamp relay Crew cab only Data link connector (dlc) Door lock relay Door unlock relay Driver door handle switch Driver door jamb switch Driver door unlock relay Driver seat belt switch Ex 4 door utility w/ liftgate Fog lamp switch From s427 (diagram 3 of 3) Front passenger door jamb switch Fuel pump & sender G117 (left rear of eng compt, near cruise control module) G200 (behind upper left end of dash) G201 (behind upper left end of dash) G203 G204 G207 (near multi- function switch) G402 G422 G475 (left rear frame rail, near sp 402) Headlamp ground relay Headlamp switch Hvac control assembly Ignition key alarm switch Ignition lock cylinder control actuator Inflatable restraint i/p module disable switch Inflatable restraint steering wheel module Instrument panel cluster (ipc) Left back-up lamp Left license lamp Left rear marker lamp Left rear park/turn signal lamp Left steering wheel control switch Nca Park switch Pickup Pickup & utility w/o auto a/c Radio Rear wiper/ washer switch & endgate/ liftgate window release switch Relay breakout) Right back-up lamp Right license lamp Right rear marker lamp Right rear park/turn signal lamp Right steering wheel control switch S134 S335 4 door utility S423 (in chassis harn, 8 cm from fuel pump & sender assembly breakout) Sp202 (left center of dash) Sp203 (front of ashtray) Sp401 (rear of right frame rail) Sp402 (rear of left frame rail) Splice pack) Sportside pickup Tan Tow haul switch Trailer wiring provision Transfer case front propshaft speed sensor shield Transfer case rear propshaft speed sensor shield Transfer case shift control switch Utility Utility w/ radio controls Utility w/o radio controls Vehicle speed sensor (vss) shield W/ column shift W/ floor shift Windshield wiper motor Ground Distribution Wiring Diagram (3 of 3) for Chevrolet Blazer 2004 List of elements for Ground Distribution Wiring Diagram (3 of 3) for Chevrolet Blazer 2004: 94 (8-way pwr seat) (auxiliary power tray harn, near in-line i/p connector) (behind right side of dash between c203 & splice pack) (dome harn, between inside air temperature sensor & left vanity mirror lamp breakout, 5 cm from breakout to sensor) (left door harn, between door speaker & door lock & side window switch breakout) (left power seat harn, 15 cm from c317) (others) (pickup b (utility) (pickup) (w/ mem) h d (6-way pwr seat) 4 door 4 door only Audio amplifier Auxiliary power outlet B a C10 Center high mount stop lamp Center high mount stop lamp resistor Crew cab D12 D13 Dome lamp Driver door lock & side window switch Driver door lock cylinder switch Driver heated seat assembly Driver lumbar switch Driver memory seat module Driver outside rear view mirror Driver seat adjuster switch Driver seat belt switch Except crewcab) Front passenger door lock & side window switch Front passenger door lock & window switch Front passenger door lock cylinder switch Front passenger heated seat assembly Front passenger outside rear view mirror Front passenger seat adjuster switch Front passenger seat belt switch Front passenger seat lumbar switch G202 (behind upper left end of dash) G204 G205 G420 (utility: right rear corner of vehicle, near c402, pickup: on right rear frame rail) G450 (on left rear of vehicle, near c403) Inside air temperature sensor assembly Inside rear view mirror Left back-up lamp Left rear door jamb switch Left rear park/ turn signal lamp Left rear tail/ stop lamp Left vanity mirror lamp Liftgate release actuator Nca Outside rear view folding mirror switch Outside rear view mirror switch Pickup except crewcab Pickup w/ power door locks w/o keyless entry Rear window defogger grid Rear window wiper cutout & liftglass ajar jamb switch Rear window wiper motor controller Right back-up lamp Right rear door jamb switch Right rear park/ turn signal lamp Right rear tail/ stop lamp Right vanity mirror lamp S269 S302 S313 S320 (right power seat harn, 15 cm from c315) S404 (body harn, 10 cm from high mount stop lamp breakout) S419 (left tail lamp jpr harn, 8 cm from c403, near taillamp) S420 (right tail lamp jpr harn, 8 cm from c402) S427 (lr body harn, near left rear taillamp breakout) S501 S601 (in right door harn) Sp204 strapped to body harn, in center front of dash, left of sp 200) Sunroof control module To sp202 (diagram 2 of 3) Transfer case shift control module (np1) Transfer case shift control module (np8) Turn signal/ hazard flasher module Utility Utility & crew cab Utility & crewcab Utility w/ c25 Utility w/ zm8 Utility, crew cab & maxi-cab W/ enhanced performance audio W/ folding power mirrors W/ heated seats W/ mirror lamps W/ power door locks except pickup w/o keyless entry W/o mirror lamps Window lockout switch
HEADLIGHTS Headlights Wiring Diagram, with ZR2 for Chevrolet Blazer 2004 List of elements for Headlights Wiring Diagram, with ZR2 for Chevrolet Blazer 2004: 74 (2.2l) (4.3l) (left radiator support) g111 (right radiator support) g112 (right side of dash) g203 5v ref A11 Ambient light sensor (top left side of dash) Auto B10 B12 Battery fuse 175a Body control module (under dash, on heater case) Body relay block (left side of dash) C1 d9 Daytime running lamps relay (taped to body harness, near breakout for rear washer hose) Drl relay ctrl E10 E11 E12 E13 Exterior lights system Fog lamp relay Fog lamp switch Fog lp fuse 15a Fog lp ind Fog rly ctrl Fog sw in Ftp Ftp in G102 (rear of right cyl head) G102 (right front of engine block, under generator) Hdlp sw fuse 7 10a Head Headlamp ctrl Headlamp power relay Headlamp switch High High beam in High beam/ flash-to- pass switch Hot at all times Hot in run I/p fuse block Ign e fuse 10a Illum Information not available Interior lights system Left fog lamp Left high beam headlamp Left low beam headlamp Light sensor Low Lt hdlp fuse 15a Multifunction switch Nca Park Park brake sw Park brake switch (base of park brake assembly) Park lamp relay Park lp fuse 20a Park rly ctrl Pnk Red Right fog lamp Right high beam headlamp Right low beam headlamp Rt hdlp fuse 15a S202 Splice pack sp100 Splice pack sp101 Splice pack sp203 Tbc fuse 10a Underhood fuse block Underhood fuse block (top of left front inner wheelwell) Headlights Wiring Diagram, without ZR2 for Chevrolet Blazer 2004 List of elements for Headlights Wiring Diagram, without ZR2 for Chevrolet Blazer 2004: 74 (2.2l) (4.3l) (left radiator support) g111 (right radiator support) g112 (right side of dash) g203 5v ref 87a A11 Ambient light sensor (top left side of dash) Auto B10 B12 Battery fuse 175a Body control module (under dash, on heater case) Body relay block (left side of dash) C1 b12 C11 Daytime running lamps relay Drl relay ctrl E10 E11 E12 E13 Exterior lights system Fog lamp relay Fog lamp switch Fog lp fuse 15a Fog lp ind Fog rly ctrl Fog sw in Ftp Ftp in G102 (rear of right cyl head) G102 (right front of engine block, under generator) G200 (left side of dash) Hdlp Hdlp sw fuse 7 10a Headlamp ctrl Headlamp grounding relay Headlamp power relay Headlamp switch High High beam in High beam/ flash-to- pass switch Hot at all times I/p fuse block Illum Interior lights system Left fog lamp Left high beam headlamp Left low beam headlamp Light sensor Low Lt hdlp fuse 15a Multifunction switch Nca Park brake sw Park brake switch (base of park brake assembly) Park lamp relay Park lp fuse 20a Park rly ctrl Pklp Red Right fog lamp Right high beam headlamp Right low beam headlamp Rt hdlp fuse 15a Splice pack sp100 Splice pack sp101 Splice pack sp202 (left center of dash) Splice pack sp203 Tbc fuse 10a Underhood fuse block Underhood fuse block (top of left front inner wheelwell)
HORN Horn Wiring Diagram for Chevrolet Blazer 2004 List of elements for Horn Wiring Diagram for Chevrolet Blazer 2004: 21 (except e09) (e09) (right of radiator support) Battery fuse 175a Body control module (under dash, on heater case) C1 c1 E3 b2 Fuse holder (engine compt, right of radiator) G111 (left of radiator support) G112 (right of radiator support) Horn fuse 15a Horn relay Horn relay control Horn switch Hot at all times Left horn (left fender well) Red Right horn (right fender well) Sp100 (left rear of radiator support) Sp101 Steering wheel Underhood fuse block (top of left front fender)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Blazer 2004 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Blazer 2004: 68 A10 A11 A12 Air bag ind Anti-lock brakes ind B10 B11 B12 Batt Brake ind Charge ind Check gauges ind Clstr fuse 11 10a Coolant temperature Cruise fuse 3 10a Ctsy lamp fuse 8 10a Eng spd Engine oil pressure sensor (top rear of engine, near distributor) Exterior lights system Fuel G203 (right side of dash) G207 (on steering column, near multi-function switch) Gauges fuse 4 10a Ground High beam ind Hot at all times Hot in accy, run or rap Hot in park or head Hot in run Hot in run or start Hot in run, bulb test or start I/p fuse block (left end of dash) Ign 1 Ign 3 Illum fuse 12 10a Illumination (6 bulb) Instrument cluster Interior lights system Left turn Low fuel Mil (service engine soon ind) Odometer display Off/run start Oil Over speed alarm ind P r n d 3 2 1 Park sw Park switch (in steering column) Pnk Rdo batt fuse 19 15a Rdo ign fuse 24 10a Right turn S205 S310 Seat belt ind Security ind Serial data Service 4wd ind Spare Speedometer Splice pack sp203 (near ashtray) Tachometer Tail gate alarm ind Tow/haul ind (a/t) Trip reset Upshift ind (m/t) Volt Vss Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Blazer 2004 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Blazer 2004: 64 (behind right kick panel) transfer case shift control module (in chassis harness, near fuel pump) (left side of transmission) park/neutral position & back-up lamp switch (near left front inner fender) electronic brake control module (on left cylinder head) engine coolant temperature sensor (rear of transmission) c116 (m-m) (rear of transmission) vehicle speed sensor (under dash, on heater case) body control module (w/ trip computer) (w/o trip computer) 2wd 4wd A12 Air temp Ambient air temperature sensor (front center of vehicle, behind fascia) B10 Bare Body control module Body relay block (behind left side of dash, near i/p fuse block) Clr Compass sensor (w/ long console: integral to driver information center, w/ short console: in headliner, right of overhead console) Cruise control system Data link connector (left side of dash) Driver information center (in front overhead console) Ect sens sig in Ect sensor in Engine controls system Fuel level sig in Fuel pump/ sender (top of fuel tank) Fused batt Fused ign G104 (rear of left cylinder head) G105 (rear of left cylinder head) G117 (left rear of engine compt) G450 (left rear corner of vehicle) Ground Ic logic Int lite dim Interior lights system Low ref Mil ind ctrl Parklamps Powertrain control module (right side of engine compt) Prndl a sig Prndl b sig Prndl c sig Prndl p sig Rear window wiper cutout & liftglass ajar jamb switch (inside endgate) Red S134 S140 S152 S422 S427 Serial data Splice pack sp200 (center of dash) Splice pack sp201 (near body relay block) Tach out Transfer case shift control module Underhood fuse block (on top of left front inner wheelwell) Vss high Vss in Vss low Vss sig out
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet Blazer 2004 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet Blazer 2004: 60 2 door 2-door 4 door 4-door B10 B11 B12 Body control module (under dash, on heater case) Body relay block (behind left side of dash, near i/p fuse block) C203 Cargo lamp Courtesy lamp Courtesy lamp relay Ctsy lamp fuse 8 10a Ctsy lamp switch sig Dome lamp Dome lmp Dome override Dr handle Driver door jamb switch Driver door sw input Front passenger door jamb switch G200 (behind upper left end of dash) G203 (behind right side of dash) G203 (right side of dash) G205 (right side of dash) G405 (right rear body corner) Headlamp switch Hot at all times I/p fuse block (left end of dash) Inadvertent power Inadvertent power lamp relay Int lps detent switch sig c3 Key buzzer Lamp request Left console courtesy lamp Left rear door jamb switch Liftgate jamb switch c2 Not used Pickup only Rear window wiper cutout & liftgate ajar jamb switch Right console courtesy lamp Right door handle switch Right front door jamb c3 switch input Right rear door jamb switch S305 (body harn, in right rear door breakout) S427 S601 Secondary door latch switch sig Sp202 Sp203 Sp204 Splice pack sp203 Tan To dome lamp (diagram 2 of 2) To overhead console (diagram 2 of 2) To splice s300 (diagram 2 of 2) To splice s332 (diagram 2 of 2) W/ overhead console W/o overhead console Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet Blazer 2004 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet Blazer 2004: 25 (dome lamp hard, 5 cm from visor vanity mirror lamp left) s310 (w/ ec mirror) (w/o ec mirror) (w/o ec mirror) (w/ ec mirror) C301 Center high mounted stop lamp Dome lamp Dome light Driver information display module From body relay block (diagram 1 0f 2) From body relay block (diagram 1 of 2) G202 (left front of dash) Inside rearview mirror or driver information display module Inside rearview mirror or driver information display w/o overhead console Left visor vanity mirror lamp Overhead console w/ sun roof Overhead console w/o sun roof Pickup Right visor vanity mirror lamp S300 (dome lamp hard, right front of roof) S300 (dome lamp hard, top of left "a" pillar) S302 S310 S332 (dome lamp hard, 7 cm from c300) Utility W/ full trip Instrument Illumination Wiring Diagram for Chevrolet Blazer 2004 List of elements for Instrument Illumination Wiring Diagram for Chevrolet Blazer 2004: 73 (4) bulbs (6) bulbs (right side of dash) g203 (w/ trip) (w/o trip) 2wd pickup & utility 4wd pickup 4wd utility A12 Ash tray lamp Automatic transmission shift lever position indicator B12 Body control module (under dash, on heater case) Body relay block (behind left side of dash) Body relay block (behind left side of dash, near i/p fuse block) C10 Dim Dimmer input c3 Dimming control Driver door lock & window switch Driver information center Exterior lamps system Fog lamp switch Front passenger door lock & window switch G200 (behind upper left end of dash) G202 (behind upper left end of dash) G203 (behind right side of dash) G203 (right side of dash) G205 (behind right side of dash) Garage door opener Head Headlamp switch Hot at all times Hvac control assembly I/p fuse block (left side of dash) Illum fuse 12 10a Inflatable restraint i/p module disable switch Inflatable restraint steering wheel module coil Input dimmer Instrument panel cluster Light switch Off Outside rearview mirror switch Park Pickup only Prk lp fuse 20a Prk lp fuse 5 10a Prk lps Radio Rear def switch illum Rear wiper/ washer & endgate/ liftglass window release switch S205 (dash harn, 8 cm from radio breakout) S282 S283 S335 (floor shift extension harn, 7 cm from prndl lamp breakout) S336 (floor shift extension harn, 7 cm from prndl lamp breakout) S390 (dome lamp harness, 5 cm from console breakout) S501 S502 (left front door harn, near breakout to radio speaker) S601 (crew cab only) Sp202 (left center of dash) Sp203 (near ashtray) Spice pack sp203 Spice pack sp204 Steering wheel controls Str whl ill fuse 6 2a Tow/ haul switch Transfer case shift control switch Underhood fuse block (top of left inner wheelwell) Utility W/ trip W/o trip Window lockout switch (4 door)
MEMORY SYSTEMS Driver"s Memory Seat Wiring Diagram for Chevrolet Blazer 2004 List of elements for Driver"s Memory Seat Wiring Diagram for Chevrolet Blazer 2004: 59 (in driver's seat harn) s316 (in driver's seat) (left rear corner of vehicle) g450 (left side of dash) data link connector +5 volt ref Battery b+ Body relay block (behind left side of dash) Class 2 serial data Driver memory seat module (under left front seat) Driver seat adjuster switch Driver seat front vertical motor Driver seat front vertical position sensor Driver seat horizontal motor Driver seat horizontal position sensor Driver seat rear vertical motor Driver seat rear vertical position sensor Driver seat recliner motor F vertical down ctrl F vertical down sig F vertical up ctrl F vertical up sig Front vertical Front vertical sens Fwd Ground Hall sensor Horizontal Horizontal fwd ctrl Horizontal fwd sig Horizontal rwd ctrl Horizontal rwd sig Horizontal sens Hot at all times Memory 1 sig Memory 2 sig Memory position Memory set Memory set sig Power seats circuit breaker 25a R vertical down ctrl R vertical down sig R vertical up ctrl R vertical up sig Rear vertical Rear vertical sens Recline Recline fwd ctrl Recline fwd sig Recline rwd ctrl Recline rwd sig Recline sens Red Rwd S304 S313 S315 Sensor ground Splice pack sp201 (strapped to body harn, at left center of dash) Tan
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 5) for Chevrolet Blazer 2004 List of elements for Power Distribution Wiring Diagram (1 of 5) for Chevrolet Blazer 2004: 62 (air jumper harn, between g100 & breakout to eng harn, 5 cm from breakout to eng harn) (not used) A10 Acc Air fuse 30a Air injection reactor fuse block Air relay Air sol fuse 30a B10 B11 Battery Battery fuse 175a Body control module C10 California only Central sequential fuel injection D10 E10 Ecm 1 fuse 15a Eng 1 fuse 10a Evaporative emissions (evap) canister purge solenoid Evaporative emissions (evap) canister vent solenoid F10 From ecm 1 a fuse diagram 1 of 5) Fuel injectors Fusible link (10 ga-red) Gauges fuse 4 10a Generator Heated oxygen sensor (ho2s) (bank 1 sensor 1) Heated oxygen sensor (ho2s) (bank 1 sensor 2) Heated oxygen sensor (ho2s) (bank 2 sensor 1) I/p fuse block Ign a fuse 40a Ignition coil Ignition control module (icm) Ignition switch Inflatable restraint i/p module disable switch Inflatable restraint sensing & diagnostic module Instrument panel cluster (ipc) Lock Mass air flow (maf) sensor Multi- function switch Nca Off Oxygen fuse 20a Pickup Pnk Powertrain control module (pcm) Red Run S100 (in oxygen sensor jumper harn, 36 cm from c100) S105 Secondary air injection reactor pump Sir fuse 16 15a Start Starter Starter relay To b/u lp fuse (diagram 2 of 5) To eng 1 fuse (diagram 1 of 5) To ign c fuse (diagram 2 of 5) Turn fuse 10 20a Underhood fuse block Power Distribution Wiring Diagram (2 of 5) for Chevrolet Blazer 2004 List of elements for Power Distribution Wiring Diagram (2 of 5) for Chevrolet Blazer 2004: 68 (body harn, 98 cm from rear doors breakout) s309 (not used) (w/ automatic day/night mirror) 2 door 4 door A/c compressor clutch relay A/t Abs fuse 60a Acc Air relay Automatic transmission shift lock (btsi) solenoid (w/ floor shift a/t) B/u lp fuse 25a B11 B12 Back-up lamp switch Blower motor relay Body relay block Btsi fuse 10a C12 D12 Daytime running lamp (drl) relay Electronic brake control module (ebcm) From b/u lp fuse diagram 2 of 5) From ign a fuse diagram 1 of 5) From oxygen b fuse diagram 1 of 5) Haz lp fuse 20a Headlamp grounding relay Headlamp switch Hvac fuse 30a Ign b fuse 50a Ign c fuse 20a Ign e fuse 10a Ignition switch Inside rear view mirror (utility) Left back-up lamp (pickup) Left back-up lamp (utility) Lock M/t Multi- function switch Off Park lamp relay Park lp fuse 20a Park/ neutral position (pnp) switch Pnk Rear defogger relay (except base pickup) Red Right back-up lamp (pickup) Right back-up lamp (utility) Run Secondary air injection reactor fuse block (calif) Sp204 (center front of dash) Sp400 (center inside of rear crossmember) (pickup) Start Stop lamp switch Stud 2 fuse 30a To clstr fuse (diagram 4 of 5) To crank fuse (diagram 4 of 5) To ign e fuse (diagram 2 of 5) To rap maxi fuse (diagram 3 of 5) To rap relay (diagram 5 of 5) To s204 (diagram 5 of 5) Trailer wiring provisions Trailer wiring provisions (utility w/ m/t) Transfer case shift control module (np1) Trl b/u fuse 10a Underhood fuse block Veh b/u fuse 15a W/ zr2 Power Distribution Wiring Diagram (3 of 5) for Chevrolet Blazer 2004 List of elements for Power Distribution Wiring Diagram (3 of 5) for Chevrolet Blazer 2004: 74 (pickup) (utility) 2 door 4 door Aux pwr fuse 25a Body relay block C301 Cargo lamp (utility) Cigar lighter Cigar ltr fuse 15a Courtesy lamp breakout, 4 cm from breakout to lamp) s208 Ctsy lp fuse 10a Data link connector (dlc) Daytime running lamp (drl) relay Dome lamp (utility) dome lamp & center high mounted stop lamp (pickup) Dome lamp (w/ sunroof) Dome lamp (w/o sunroof) Door lock relay Door unlock relay Driver information center (dic) Driver information center (dic) (w/o trip computer) Driver seat adjuster switch Driver seat lumbar switch Driver's door unlock relay Ecm b fuse 20a Fog lamp relay Fog lp fuse 15a From abs i fuse (diagram 2 of 5) From int bat fuse (diagram 3 of 5) From s223 diagram 3 of 5) Front passenger seat adjuster switch Fuel pump relay G203 (behind right side of dash, between c203 & splice packs) G204 (behind right side of dash, between c203 & splice pack) Garage door opener module Hdlp sw fuse 10a Headlamp switch I/p fuse block Inadvertent power lamp relay Instrument panel cluster (ipc) Int bat fuse 50a Left auxiliary power outlet Left console courtesy lamp Memory seat module Nca Power seats circuit breaker 25a (utility w/ power seat) Powertrain control module (pcm) Pwr lcks fuse 15a Radio Rap fuse 50a Rdo bat fuse 15a Red Right auxiliary power outlet Right console courtesy lamp S223 S268 (auxiliary power tray harn, 9.5 cm from in-line dash connector) S269 S304 (in body harn, before breakout to left & right rear door) S310 S311 (in left power seat harn) Sp203 (in front of ashtray, strapped to body harn) To hi beam fuse (diagram 3 of 5) To pwr lcks fuse 14 (diagram 3 of 5) To rap relay (diagram 5 of 5) To tbc fuse (diagram 4 of 5) Transfer case shift control module (w/ np1) Under- hood fuse block Underhood fuse block Utility Utility w/ overhead trip console Utility w/o overhead console & pickup Utility w/overhead W/ memory W/o memory Power Distribution Wiring Diagram (4 of 5) for Chevrolet Blazer 2004 List of elements for Power Distribution Wiring Diagram (4 of 5) for Chevrolet Blazer 2004: 97 (body harn, 13 cm from blower motor breakout) (eng harn, 10 cm from map sensor breakout) (left power seat harn, 20 cm from c317) (right power seat harn, 20 cm from c315) (w/ np1) (w/o np1) A/c compressor clutch relay A/c fuse 10a Atc fuse 20a Automatic transmission Automatic transmission shift lock actuator (w/ floor shift a/t) Body control module Body relay block C1 a1 C175 Center high mounted stop lamp Clstr fuse 10a Clutch pedal position (cpp) switch (m/t) Crank fuse 10a Cruise control module D11 D14 D15 D16 Daytime running lamps (drl) relay Dome & high mount stop lamp Driver door lock/ side window switch Driver outside rear view mirror Driver seat heater module Driver seat lumbar switch E10 E11 E12 Estc 4wd F10 F11 F12 From atc m fuse (diagram 4 of 5) From hi beam fuse (diagram 3 of 5) From ignition switch pin c1 (diagram 2 of 5) From ignition switch pin d1 (diagram 2 of 5) Front passenger door lock/ window switch Front passenger heated seat assembly Front passenger seat lumbar switch Headlamp power relay High mount stop lamp relay (pickup) High mount stop lamp resistor Horn (a note) Horn (f note) Horn fuse 15a Horn relay Htd mir fuse 10a Htd seat fuse 20a (utility) I/p fuse block Instrument panel cluster (ipc) Left low beam headlamp Lift- glass relay (utility) Liftgate or endgate lock cylinder switch (utility) Lt hdlp fuse 15a Mir/lks fuse 3a Multi- function switch (flash to pass) Multifunction switch (utility) Nca Outside rear view mirror switch Park/ neutral position (pnp) switch (a/t) Passenger outside rear view mirror Pickup Pnk Powertrain control module (pcm) Rear defogger relay (utility) Rear window defogger grid (utility) Rear window wiper motor Remote control door lock receiver Right high beam headlamp Right low beam headlamp Rr defog fuse 30a Rr w/w fuse 15a (utility) Rt hdlp fuse 15a S113 S116 S314 S321 S405 (body harn, 10 cm before chmsl breakout) Stop lp fuse 20a Stoplamp switch Tbc fuse 10a To a/c fuse (diagram 4 of 5) Trailer wiring provisions Transfer case encoder motor Transfer case shift control module Trchmsl fuse 10a Under- hood fuse block Utility Vechmsl fuse 10a W/ rke W/np1 W/o np1 Power Distribution Wiring Diagram (5 of 5) for Chevrolet Blazer 2004 List of elements for Power Distribution Wiring Diagram (5 of 5) for Chevrolet Blazer 2004: 58 (body harn, 17 cm from sp 202) s203 (dash harn, in breakout to heater controller conn, 6 cm into breakout) s217 (w/ trip) (w/np1) (w/o np1) (w/o trip) 4wd fuse 10a Abs fuse 10a Air temperature actuator Body control module Body relay block C8 e10 Clutch start switch Cruise control module Cruise fuse 10a Driver door lock & window switch Driver information display module (utility) Driver seat lumbar switch Electronic brake control module (ebcm) Except base pickup From 4wd fuse (diagram 5 of 5) From ignition switch pin c6 (diagram 2 of 5) From ignition switch pin d6 (diagram 2 of 5) From power seats circuit breaker (diagram 3 of 5) Front axle indicator switch Front axle vacuum solenoid (w/ np8) Front pas- senger seat lumbar switch Front passenger door lock & window switch (2 door) Frt wpr fuse 25a Hvac 1 fuse 10a Hvac control assembly Hvac control assembly (w/o electronic climate control) Hvac fuse 20a I/p fuse block Inside rear view mirror (w/ automatic day/night mirror) Instrument panel cluster Multi- function switch Multifunction switch Nca Power window circuit breaker 30a Radio Rdo ign fuse 10a Rear wiper/ washer switch & endgate/ liftgate window release switch (utility) Red Retained accessory power (rap) relay Rr wpr fuse 15a Sp200 (strapped to body harn, in center front of dash, to right of sp 204) Steering wheel controls (if equipped) Stop- lamp switch Str whl rdo ign fuse 2a Sunroof module Sunroof switch To hvac fuse (diagram 5 of 5) Transfer case select switch (4wd) Transfer case shift control module W/o memory Window lockout switch (4 door) Windshield wiper motor
POWER DOOR LOCKS Power Door Locks Wiring Diagram for Chevrolet Blazer 2004 List of elements for Power Door Locks Wiring Diagram for Chevrolet Blazer 2004: 50 (body harn, 6.5 cm from right rear door jamb sw breakout) s307 87a A5 c1 B11 Battery Body control module (under dash, on heater case) Body relay block (behind left side of dash, near i/p fuse block) C211 D10 Door lock relay Door unlock relay Dr lk rly Dr unlk rly Driver door lock & window switch Driver door lock actuator Driver door unlock relay Drv dr unlk rly E10 E11 E12 F10 F12 Front passenger door lock & window switch Front passenger door lock actuator G105 (left rear of cylinder head) G202 (behind upper left end of dash) Ground Hot at all times I/p fuse block (left end of dash) Ign key switch Ignition key alarm switch Instrument cluster system Left rear door lock actuator (utility) Liftgate/endgate lock cylinder switch (utility w/ content theft) Lock Mir/lck fuse 7 3a Mirrors system Pwr lks fuse 14 15a Remote control door lock receiver (behind lower left side of dash) Rfa link Right rear door lock actuator (utility) S308 (body harn, 16.5 cm from left rear door jamb sw breakout) Splice pack sp202 (left center of dash) Tan Tan b4 Trc fuse 10a Underhood fuse block (top of left front inner wheelwell) Unlock Vss W/ keyless entry
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Chevrolet Blazer 2004 List of elements for Electrochromic Mirror Wiring Diagram for Chevrolet Blazer 2004: 29 A/c system A/t Auto Automatic day/night mirror Automatic day/night mirror signal B/u lamp fuse 25a B11 Back-up lamp switch (on left side of trans- mission) C1 f Exterior lights system G202 (behind upper left end of dash) Hot in run Hot in run or start Hvac1 fuse 21 10a I/p fuse block Left outside rearview mirror M/t Nca Off Park/neutral position (pnp) switch (on left side of transmission) Photo sensor Pnk Power & logic circuits S217 S302 S309 Underhood fuse block (on top of left front inner wheelwell) Veh b/u fuse 15a W/ddo Power Mirrors Wiring Diagram for Chevrolet Blazer 2004 List of elements for Power Mirrors Wiring Diagram for Chevrolet Blazer 2004: 24 Body relay block (behind left side of dash, near i/p fuse block) Day/night mirror circuit Down Drivers outside rearview mirror E12 Electro chromic F12 Front passenger outside rearview mirror G202 (behind upper left end of dash) Hot at all times Illum Interior lights system Left Left/ right m Mir/lcks fuse 7 5a Motor Nca Outside rear view mirror switch Pnk Power door locks system Right S501 Underhood fuse block (left front inner wheelwell) Up/ down m
POWER SEATS 6-Way Power Seat Wiring Diagram for Chevrolet Blazer 2004 List of elements for 6-Way Power Seat Wiring Diagram for Chevrolet Blazer 2004: 19 A nca Back Body relay block Driver seat adjuster switch Driver seat front vertical motor Driver seat horizontal motor Driver seat rear vertical motor Frt dn Frt up Fwd G450 (left rear corner of vehicle) Hot at all times Nca Power seats circuit breaker 25a Rear dn Rear up S311 S313 Tan 8-Way Adjustable Power Seat Wiring Diagram for Chevrolet Blazer 2004 List of elements for 8-Way Adjustable Power Seat Wiring Diagram for Chevrolet Blazer 2004: 26 Back Body relay block Driver seat adjuster switch Driver seat front vertical motor Driver seat horizontal motor Driver seat rear vertical motor Driver seat recliner motor Front passenger seat adjuster switch Front passenger seat front vertical motor Front passenger seat horizontal motor Front passenger seat rear vertical motor Front passenger seat recliner vertical motor Frt dn Frt up Fwd G450 (left rear corner of vehicle) Hot at all times Power seats circuit breaker 25a Rear dn Rear up Recl fwd Recl rwd S304 S313 S320 Tan Heated Seats Wiring Diagram for Chevrolet Blazer 2004 List of elements for Heated Seats Wiring Diagram for Chevrolet Blazer 2004: 27 Cruise fuse 3 10a Driver heated seat assembly Driver heated seat module Driver lumbar switch Element control Front passenger heated seat assembly Front passenger lumbar switch Front passenger seat belt switch (open when buckled) G450 (on left rear corner of vehicle) Ground Heated seat relay Heater element seat back Heater element seat cushion Hot at all time Hot in run Htd seat fuse 20a I/p fuse block Nca Off Pnk S313 S314 S320 S321 Splice pack sp200 Switch signal Underhood fuse block Lumbar Wiring Diagram for Chevrolet Blazer 2004 List of elements for Lumbar Wiring Diagram for Chevrolet Blazer 2004: 17 Body relay block Driver seat lumbar motor Driver seat lumbar switch Front passenger seat lumbar motor Front passenger seat lumbar switch G450 (left rear corner of vehicle) Hot at all times Htd seat fuse 20a Nca Out Pnk Power seats circuit breaker 25a S311 S313 S320 S427 Under- hood fuse block
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram, Except Xtreme for Chevrolet Blazer 2004 List of elements for Power Top/Sunroof Wiring Diagram, Except Xtreme for Chevrolet Blazer 2004: 27 (not used) Body relay block (behind left side of dash, near dash fuse block) Close G202 (behind upper left end of dash) Ground Hot in accy, run & rap Ign Ls common Ls1 Ls2 Ls3 Motor close & tilt down Motor open & Nca Open Open & tilt dwn input Overhead console Power window circuit breaker 30a Red S302 Sun roof control module (at front of sun roof) Sun roof control switch Sun roof motor Sun roof opening switch Sw comm Tilt up Tilt up input close & Power Top/Sunroof Wiring Diagram, Xtreme for Chevrolet Blazer 2004 List of elements for Power Top/Sunroof Wiring Diagram, Xtreme for Chevrolet Blazer 2004: 14 +close +open Close G300 (front of headliner) Hot in accy, run & rap I/p fuse block (on left end of dash) Nca Off Open Red Rr wpr fuse 23 15a Sun roof motor (in front of sun roof) Sun roof switch Switch illumination
POWER WINDOWS Power Windows Wiring Diagram, 2 Door for Chevrolet Blazer 2004 List of elements for Power Windows Wiring Diagram, 2 Door for Chevrolet Blazer 2004: 23 (left side of dash) g202 Body relay block (behind left side of dash, near i/p fuse block) C1 f C1 k C2 b C2 c Driver door lock & window switch Driver window regulator motor Express down module Front passenger door lock & window switch Front passenger window motor Hot in acc, run & retained acc power Hot w/headlamp switch in park or head position I/p fuse block (on left end of dash) Illum Left front window switch Park lp fuse 5 10a Power window circuit breaker 30a Right front window switch S501 S601 Side of dash) g205 Tan Power Windows Wiring Diagram, 4 Door for Chevrolet Blazer 2004 List of elements for Power Windows Wiring Diagram, 4 Door for Chevrolet Blazer 2004: 28 (left side of dash) g202 (right side of dash) g205 Body relay block (behind left side of dash, near i/p fuse block) C1 k C2 b Driver door lock & window switch Driver window motor Express down module Front passenger door lock & window switch Front passenger window motor G202 (left side of dash) Hot in acc, run & retained acc power Hot w/headlamp switch in park or head position I/p fuse block (on left end of dash) Illum Left front window switch Left rear side window regulator motor Left rear window switch Park lp fuse 5 10a Power window circuit breaker 30a Right rear side window regulator motor Right rear window switch S306 S501 S502 S601 Tan Window lockout switch
RADIO Radio Wiring Diagram for Chevrolet Blazer 2004 List of elements for Radio Wiring Diagram for Chevrolet Blazer 2004: 59 (2 door) (4 door) (w/o pwr door locks & pwr windows) (w/pwr door locks & pwr windows) A10 A11 A12 Antenna input B10 B11 B12 Body ground Coaxial cable Computer data lines system G200 (behind upper left end of dash) G203 (behind right side of dash, between c203 & splice packs) Ground Hot at all times Hot in acc or run Hot in park & head I/p fuse block (at left side of dash, near door jamb switch) Illum fuse 12 10a Interior lights system Lamp sup volt 2 Led dimming signal Left front door speaker Left rear door speaker (4 door) left rear speaker (2 door) Left steering wheel controls switch Lf spk out (+) Lf spk out (-) Lr spkr out (+) Lr spkr out (-) Mute Nca Program Radio Radio antenna Rap fuse sup voltage Rap sup volt Rdo batt fuse 19 15a Rdo ign fuse 24 10a Request sig input Rf spkr out (+) Rf spkr out (-) Right front door speaker Right rear door speaker (4 door) right rear speaker (2 door) Right steering wheel controls switch Rr spk out (+) Rr spk out (-) S205 Seek down Seek up Serial data Splice pack sp202 Str whl illum fuse 6 2a Switch backlighting Tan Vol down Vol up
SHIFT INTERLOCK Shift Interlock Wiring Diagram, with Column Shift for Chevrolet Blazer 2004 List of elements for Shift Interlock Wiring Diagram, with Column Shift for Chevrolet Blazer 2004: 17 2 door 4 door Automatic transmission shift lock actuator (in steering column) B/u lp fuse 25a B12 Btsi fuse 10a C12 G200 (left side of dash) G201 (left side of dash) Hot in run & start Park/ neutral position (pnp) switch (on left side of transmission) Pnk Splice pack sp202 (behind left center of dash) Splice pack sp204 (behind center of dash) Stoplamp switch (on brake pedal support bracket) Transmission systems (transfer case) Underhood fuse block (on top of left front inner wheelwell) Shift Interlock Wiring Diagram, with Floor Shift for Chevrolet Blazer 2004 List of elements for Shift Interlock Wiring Diagram, with Floor Shift for Chevrolet Blazer 2004: 18 A/t shift lock actuator (part of transmission controller, in center floor console) B/u lp fuse 25a B12 Body relay block (behind left side of dash) Btsi fuse 10a Btsi solenoid C12 G200 (left side of dash) G201 (left side of dash) Hot in run & start Park lock solenoid Park/ neutral position (pnp) switch (on left side of transmission) Pnk S335 Splice pack sp202 (behind left center of dash) Splice pack sp204 (behind center of dash) Stoplamp switch (on brake pedal support bracket) Underhood fuse block (on top of left front inner wheelwell) Steering Column Wiring Diagram, with Floor Shift for Chevrolet Blazer 2004 List of elements for Steering Column Wiring Diagram, with Floor Shift for Chevrolet Blazer 2004: 11 Automatic transmission shift lock actuator (part of shift control assembly) Clstr fuse 11 10a G200 (behind upper left end of dash) G201 (behind upper left end of dash) Hot in run or start I/p fuse block (left end of dash) Ignition lock cyl switch Ignition lock cylinder control actuator Pnk S113 Splice pack sp202 (strapped to body harness, at left center of dash)
STARTING/CHARGING Charging Wiring Diagram for Chevrolet Blazer 2004 List of elements for Charging Wiring Diagram for Chevrolet Blazer 2004: 24 (on right side of engine compartment) powertrain control module (pcm) A10 Battery Charge indicator Class 2 Class 2 data Fuse holder (on lower right side of radiator support, below battery) Fusible link (10 ga- red) G106 (on right frame rail, forward of right front wheel) G107 (on right front of engine block) G108 (on right side of radiator support, next to battery fuse) Generator control/ monitoring Generator l Hot at all times I/p fuse block (on left end of dash) Instrument panel cluster Logic Not used Rdo batt fuse 19 15a Red S276 Sound systems Splice pack sp201 (strapped to body harn, near body relay block) Starter solenoid Starting Wiring Diagram for Chevrolet Blazer 2004 List of elements for Starting Wiring Diagram for Chevrolet Blazer 2004: 44 (a/t) (m/t only) (m/t) (m/t) (a/t) (not used) (on rear of right cylinder head) A/t A11 Acc B stud Batt Battery Battery fuse 175a C1 c2 C3 e2 Clutch start switch (on clutch pedal support bracket) Crank fuse 10a D11 F11 Fuse holder (on lower right side of radiator support, below battery) Fusible link (10 ga- red) G102 G106 (on right frame rail, forward of right front wheel) G107 (on right front of engine block) G108 (on right side of radiator support, next to battery fuse) Generator Hold- in coil Hot at all times Ign a fuse 40a Ign c fuse 20a Ignition switch Lock M/t Off P/n Park/neutral position (pnp) switch (lower left side of trans) Power distribution system Pull- in coil Red Run Start Starter motor Starter relay Underhood fuse block (on top of left front inner wheelwell)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram for Chevrolet Blazer 2004 List of elements for Supplemental Restraints Wiring Diagram for Chevrolet Blazer 2004: 44 (at right frame rail, forward of right front wheel) g101 (behind right side of dash, between c203 & splice pack) g203 (no connection) A10 A11 A12 A13 A14 A15 A16 A17 A18 Air bag indicator Class 2 serial data Data link connector (dlc) (partial) (under left side of dash) Front signal Ground High control Hot in run & start I/p fuse block (on left end of dash) Ign Ignition Illumination lamp Indicator control Indicator lamp Inflatable restraint ip module Inflatable restraint ip module disable switch (pickup only) Inflatable restraint sensing & diagnostic module (under console & carpet, between front seats) Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil Instrument panel cluster (ipc) Interior lights system Left inflatable restraint front end discriminating sensor (on left side of front frame crossmember) Low control Nca Pnk Right inflatable restraint front end discriminating sensor (on right side of front frame crossmember) S276 Shorting bar Sir fuse 15a Sound systems Splice pack sp201 (strapped to body harn, near body relay block) Splice pack sp203 (in dash harn, in front of ashtray, strapped to body harness) Switch signal
TRANSMISSION A/T Wiring Diagram for Chevrolet Blazer 2004 List of elements for A/T Wiring Diagram for Chevrolet Blazer 2004: 98 (rear of right cyl head) g103 (under dash, on heater case) body control module +5v 1-2 shift solenoid 1-2 ss 2-3 shift solenoid 2-3 ss 2wd 3-2 shift solenoid 3-2 ss 4wd 4wd low A/t fluid pressure manual valve position switch A/t shift lock solenoid A10 A11 A12 Abs fuse 22 10a Automatic transmission B c2 B8 c2 Bare Blower motor resistor) Brk sw C116a (4wd) Cls 2 data Clstr fuse 11 10a Cruise control & anti-lock brakes systems D3, d2 D4, d2 Data link connector (under left side of dash) Ecm b fuse 20a Ecm i fuse 15a Ect sig Electronic brake control module Engine coolant temperature sensor (on left cylinder head, between rear plugs) Fluid temp sensor Frt axle sw G104 (rear of left cyl head) G104 rear of left cyl head) G105 (rear of left cyl head) G117 (left rear of eng compt) Gauges fuse 4 10a Gnd Hot at all times Hot in off, run, or start Hot in run Hot in run or start I/p fuse block (on left end of dash) Ign Instrument cluster Instrument panel cluster (ipc) Lo ref Mil (service engine soon ind) Mil ctrl Nca Park/neutral position switch (left side of transmission) Pc sol hi Pc sol lo Pnk Powertrain control module (right side of engine compt) Press ctrl solenoid Prnd a Prnd b Prnd c Prnd p Range b Range c Red Red a Red b Rev, lo S106 S113 S116 S134 S140 S152 S203 Sens gnd Solid state Splice pack sp201 (near body relay block) Stoplamp switch (on brake pedal support bracket) Tan Tcc pwm Tcc pwm solenoid Tcc sol Tcc solenoid Tft sens sig Throttle position sensor (on throttle body assembly) Tp sig Trans rng a Transfer case circuit Underhood fuse block (on top of left front fender) Utility w/ floor shift Vehicle speed sensor (right rear of trans) Vss hi Vss lo Transfer Case Wiring Diagram, with 2-Speed Automatic Transfer Case for Chevrolet Blazer 2004 List of elements for Transfer Case Wiring Diagram, with 2-Speed Automatic Transfer Case for Chevrolet Blazer 2004: 92 (left rear of engine compt) g117 +8v ref +8v ref out 2-hi ind 4-hi ind 4-lo ind 4wd fuse 15 10a 4wd ind 4wd lo 4wd lo ind sig 4wd sw sig Atc fuse 20a Axle sw sig Bare Body control module Body relay block (behind left side of dash) C1 e5 Channel-a Channel-b Channel-c Channel-p Class ii data Class ii serial data Clutch sol sig Crank fuse 10a Data link connector (dlc) (partial) (under left side of dash) Decoder logic E10 E11 E12 E13 E14 E15 E16 Encoder motor Encoder sig rtn F10 F11 F12 F13 F14 F15 F16 Front axle indicator switch (on front axle, right of diff) Front axle vacuum solenoid (on firewall, near windshield wiper motor) Front propshaft speed sensor (top left rear of transfer case Ft shaft speed hi Ft shaft speed lo Fwd G105 (rear of left cylinder head) G203 (right side of dash) G205 (right side of dash) Gauges fuse 4 10a Gnd Ground Hot at all times Hot in run Hot in run or start Hot in start I/p fuse block (on left end of dash) Ignition Illum lamps Instrument panel cluster Interior lights system Lock sol out Module ground Motor feed a Motor feed b Motor lock Nca Neutral ind Pnk Powertrain control module (right side of engine compt) Pwr Rear propshaft speed sensor (top right rear of transfer case Red Rr shaft speed hi Rr shaft speed lo S134 bare S152 Service 4wd ind Solid state Splice pack sp200 (center of dash) Splice pack sp201 (near body relay block) Splice pack sp203 (near ashtray) Splice pack sp204 (center of dash) Tan Transfer case encoder motor Transfer case shift control module (behind right front kick panel) Transfer case shift control switch Underhood fuse block Underhood fuse block (on top of left front fender) Transfer Case Wiring Diagram, with 2-Speed Selectable Transfer Case for Chevrolet Blazer 2004 List of elements for Transfer Case Wiring Diagram, with 2-Speed Selectable Transfer Case for Chevrolet Blazer 2004: 89 (a/t) pnp switch in (right front of engine compt) powertrain control module 12v battery 12v ignition (3) 2 door 2 hi request 2 hi status lamp 2wd hi indicator 2wd hi switch 4 door 4 hi request 4 hi status lamp 4 lo request 4 lo status lamp 4wd fuse 15 10a 4wd hi indicator 4wd hi switch 4wd lo in 4wd lo indicator 4wd lo selected 4wd lo switch Anti-lock brakes system Atc fuse 20a Axle sw Battery Body relay block (behind left side of dash) Btsi fuse 10a C10 C11 C12 C13 C14 C15 C16 Crank fuse 10a Cruise control system Ctsy lp fuse 8 10a D10 D11 D12 D13 D14 D15 D16 Data link connector Data link connector (dlc) (partial) (under left side of dash) Encoder channel a Encoder channel b Encoder channel c Encoder channel p Encoder channel-a Encoder channel-b Encoder channel-c Encoder channel-p Encoder ground Encoder sig ground Front axle indicator switch (on front axle, right of diff) G203 (right side of dash) G205 (right side of dash) Ground Hot at all times Hot in park or neutral Hot in run Hot in start I/p fuse block (on left end of dash) Ignition Illumination lamp Instrument cluster Interior lights system M shift motor Motor control a Motor control b Red S121 (body harn, 6.5 cm from blower motor breakout) S208 Solid state Splice pack sp204 (center of dash) Splice pack sp200 (center of dash) Splice pack sp200 (left center of dash) Splice pack sp203 (near ashtray) Splice pack sp204 (center of dash) Starting/ charging system Stoplamp switch Transfer case encoder motor (behind automatic transmission) Transfer case shift control module (behind right kick panel) Transfer case shift control switch Underhood fuse block (on top of left front fender) Vehicle speed in Vs signal
TRUNK, TAILGATE, FUEL DOOR Trunk, Tailgate, Fuel Door Wiring Diagram for Chevrolet Blazer 2004 List of elements for Trunk, Tailgate, Fuel Door Wiring Diagram for Chevrolet Blazer 2004: 35 (2.2l) (4.3l) (w/o rke) (w/rke) a b A12 A5 c1 B10 Body control module (under dash, on heater case) Body relay block (behind left side of dash, near dash fuse block) C (w/rke) (w/o rke) a Class 2 serial data D11 D12 E12 F10 G203 (right side of dash) G204 (right side of dash) G450 (left rear corner of vehicle) Gmcm serial data Hot at all times Left door lock cylinder switch (inside door latch assembly) Lift glass release sw sig Liftgate/endgate lock cylinder switch (at top center of liftgate) Liftgate/endgate window release actuator (in top of endgate) Liftglass rel relay ctrl Liftglass relay Mir/lks fuse 3a Park brake sw sig Park brake switch (on base of park brake assembly) Powertrain control module (pcm) (on right front of engine compt) Rear wiper/washer & endgate/liftgate window release switch Remote control door lock receiver (behind lower left side of dash) S427 Splice pack sp201 (body harness, under left side of dash) Splice pack sp203 (near ashtray) Underhood fuse block (on top of left front inner wheelwell)
WARNING SYSTEMS Warning Systems Wiring Diagram for Chevrolet Blazer 2004 List of elements for Warning Systems Wiring Diagram for Chevrolet Blazer 2004: 58 (behind right side of dash, between c203 & splice packs) g203 (behind upper left end of dash) g200 (on left rear corner of vehicle, near c403) g450 A12 Auto B11 Battery Body control module (bcm) (under dash, on heater case) Chime Cruise fuse 3 10a Driver door jamb switch Driver seat belt switch (open when buckled) Exterior lights system Gauges fuse 4 10a Ground Ground distribution system Head Headlamp off sig Headlamp switch Hot at all times Hot in run Hot in run & start Hot w/headlamp switch in park or head Hot w/headlamp switch in park or head position rheostat controlled I/p fuse block (on left end of dash) Ignition 1 volt Ignition 3 volt Ignition key alarm switch (closed w/key in ignition switch) Illum fuse 12 10a Inst panel fuse Instrument panel cluster (ipc) Key in ign sw Left front dr sw Left turn sig Nca Park Park lps fuse 5 10a Park lps volt Pickup except crew cab Pnk Power distribution system Powertrain control module (pcm) (on right side of engine compartment) Radio Right turn sig S205 S276 S283 S313 Seat belt switch Serial data Sp200 (strapped to body harness, in center front of dash, to right of sp204) Sp201 (strapped to body harness, near body relay block) Sp202 (strapped to body harness, at left center of dash) Sp203 (in dash harness, in front of ashtray, strapped to body harness) Tan Tbc fuse 10a Underhood fuse block (on top of left front inner wheelwell) Utility
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Chevrolet Blazer 2004 List of elements for Front Wiper/Washer Wiring Diagram for Chevrolet Blazer 2004: 19 (on left rear of engine compt) g117 (on rear of right cylinder head) g102 Frt wpr fuse 17 25a High Hot in accy or run I/p fuse block (on left end of dash) Mist Mux1 Mux2 Off Pulse Red S118 Underhood fuse block (on top of left front inner wheelwell) Washer switch Windshield washer fluid pump (in washer fluid reservoir) Windshield wiper motor (on center of firewall) Wiper switch Wiper/ washer switch (part of multi- function switch) Rear Wiper/Washer Wiring Diagram for Chevrolet Blazer 2004 List of elements for Rear Wiper/Washer Wiring Diagram for Chevrolet Blazer 2004: 18 (no connection) (on left rear corner of vehicle, near c403) g450 G102 (on rear of right cylinder head) High Hot at all times Hot in accy & run I/p fuse block (on left end of dash) Logic Low Off Rear window washer fluid pump (in washer fluid reservoir, on left front of eng compt) Rear window wiper cutout & liftgate ajar jamb switch (in liftgate) Rear window wiper motor (on top center of endgate) Rear wiper/washer switch & endgate/liftgate window release switch Rr w/w fuse 15a Rr wpr fuse 23 15a Underhood fuse block (on top of left front inner wheelwell) Washer switch
