Diagram sections — 28 (60 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 NAVIGATION POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Compressor Wiring Diagram for Hummer H3 2007 List of elements for Compressor Wiring Diagram for Hummer H3 2007: 26 (in hvac harness) s250 5v ref A/c clutch diode 90 A/c clutch relay A/c compressor clutch A/c refrigerant pressure sensor (on high pressure hose connection to compressor) A/c req sig A41 A42 A43 Body control module (behind right front kick panel) Computer data lines system Evap temp sig Evaporator temperature sensor (behind right lower dash) G103 (on lower left side of engine block, forward of g102) Hot at all times Hot w/ run/ crank relay energized Hvac control module (behind radio) Logic Low ref Manual a/c circuit Powertrain control module (pcm) (at left front side of engine compt) Press sens sig Rly ctrl Serial data Underhood fuse block (above left front wheel well) Manual A/C Wiring Diagram (1 of 2) for Hummer H3 2007 List of elements for Manual A/C Wiring Diagram (1 of 2) for Hummer H3 2007: 44 5v ref A/c req sig A26 A41 A42 A43 Air temp a Blower motor (below right side of dash) Blower motor resistor assembly (attached to bottom of blower) Blower motor switch Body control module (behind right front kick panel) Computer data lines system Evap temp sig G106 (on right inner front wheel well) G300 (under driver seat carpet, on floor board) Grd High High speed blower motor (attached to blower motor case) Hot at all times Hvac blwr fuse 82 30a Hvac cntrl hd fuse 59 10a Hvac control module (beneath radio) Hvac relay Ign 3 relay Ign 3 volt Ign 3 voltage L air temp b L air temp sig Logic Low Mode door b Mode door sig Off R air temp b R air temp sig Rdo fuse 13 10a Recirc a Recirc b S205 (approximately 5 cm (2 in) right of breakout to left footwell lamp) S206 (approximately 7 cm (2.8 in) right of breakout to right footwell lamp) S251 (approximately 0.5 cm (0.2 in) right of breakout to left footwell lamp) Serial data Tan Underhood fuse block (above left front wheel well) Manual A/C Wiring Diagram (2 of 2) for Hummer H3 2007 List of elements for Manual A/C Wiring Diagram (2 of 2) for Hummer H3 2007: 31 (in hvac harness, approximately 10 cm (3.9 in) back from right air temperature actuator connector) (in hvac harness, approximately 23.5 cm (9.3 in) back from right air temperature actuator connector) s260 (in hvac harness, approximately 28.5 cm (11.2 in) back from right air temperature actuator connector) s240 (not used) 13.5 cm (5.3 in) before breakout to evaporator temperature sensor) s250 5v ref A/c clutch diode 90 A/c clutch relay 76 A/c compressor clutch A/c refrigerant pressure sensor (on high pressure hose connection to compressor) Computer data lines system Engine coolant temperature (ect) sensor (front left of engine) Evaporator temperature sensor (behind right lower dash) G103 (on lower left side of engine block, forward of g102) Hot at all times Hot w/ run/ crank relay energized Left air temperature actuator (mounted to left side of hvac module assembly) Logic Low ref Mode actuator (on side of heater box) Nca Powertrain control module (pcm) (at left front side of engine compt) Press sens sig Recirculation actuator (upper right corner of heater case) Right air temperature actuator (mounted to left side of hvac module assembly) Rly ctrl S230 Sens sig Serial data Tan Underhood fuse block (above left front wheel well)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 2) for Hummer H3 2007 List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Hummer H3 2007: 52 (under driver seat near c307) (w/o active brake control) longitudinal accelerometer sensor 5v ref Abs/vses fuse 10a Abs/vses1 -mtr Abs/vses2 -sol fuse 30a Batt + Bkup volt Brake fluid level switch (on left side of brake fluid reservoir) Brk fld sig Can h Can l Dlvrd torq sig Electronic brake control module (ebcm) (left of master cylinder) Exterior lights system Fuse 40a G105 (on left inner front wheel well, behind battery) Gnd Grd Hot at all times Hot w/ run/crnk relay energized Ign 1 volt Ign 3 volt Las sig Left front wheel speed sensor (wss) (attached to left front wheel hub) Left rear wheel speed sensor (wss) (attached to left side of rear axle) Lf spd low ref Lf spd sig Low ref Lr spd low ref Lr spd sig Nca Pnk Red Req torq sig Rf spd low ref Rf spd sig Right front wheel speed sensor (wss) (attached to right front wheel hub) Right rear wheel speed sensor (wss) (attached to right side of rear axle) Rr spd low ref Rr spd sig S110 Serial class 2 Steering pos sig Steering sig a Steering sig b Stop fuse 15a Stop lamp switch (above brake pedal assembly) Stop lp volt Tan Underhood fuse block (above left front wheel well) W/ active brake control W/o active brake control Anti-lock Brakes Wiring Diagram (2 of 2) for Hummer H3 2007 List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Hummer H3 2007: 42 A17 A31 A37 A38 A39 A41 Abs ind Accessory switch Body control module (bcm) (behind right front kick panel) Brake ind Can h Can l Class 2 (ebcm) Class 2 serial data Data link connector (dlc) (left side of dash) Delivered torque signal G106 (on right inner front wheel well) G300 (under driver seat carpet, on floor board) Gnd Hot w/ hvac relay energized Ign Ign 3 volt Instrument panel cluster (ipc) Interior lights system Logic Park brake switch (left lower side of dash) Park brk sw sig Powertrain control module (pcm) (at left front side of engine compt) Requested torque signal S141 S205 S300 Steering pulse sig Steering sig a Steering sig b Steering wheel position sensor (w/ active brake control) (near base of steering column) Stop lp volt Trac ctrl sw sig Traction control switch Underhood fuse block (above left front wheel well) Vses/abs fuse 10a Yaw rate/lateral & longitudinal accelerometer sensor (w/ active brake control) (under driver seat near c307)
ANTI-THEFT Forced Entry Wiring Diagram for Hummer H3 2007 List of elements for Forced Entry Wiring Diagram for Hummer H3 2007: 42 A19 A24 A25 A32 A38 A39 A40 A44 A47 Bcm fuse 14 10a Body control module (bcm) (behind right front kick panel) Class 2 serial data Clstr fuse 19 10a Driver door ajar switch (in lower left "b" pillar) Endgate ajar switch (in right "d" pillar) Exterior lights system Frt trn/hazrd/ ctsy mir fuse 56 15a G300 (under driver seat carpet) G320 (under rear of middle console carpet) Gnd Headlamp rly ctrl Headlights system Horn rly ctrl Horns system Hot at all times Instrument panel cluster Left rear door ajar switch (in lower left "c" pillar) Lf door ajar sig Lr dr ajar sig sw Parklamp rly ctrl Passenger door ajar switch (in lower right "b" pillar) Powertrain control module (at left front side of engine compt) Rear trn/ hazrd fuse 20 20a Rf dr ajar sig sw Right rear door ajar switch (in lower right "c" pillar) Rr dr ajar sw sig S300 S320 S347 (in body harness, approximately 42 cm (16.5 in) rearward of breakout to right seat belt pretensioner) Security ind ctrl Security indicator Underhood fuse block (above left front wheel well) Immobilizer Wiring Diagram for Hummer H3 2007 List of elements for Immobilizer Wiring Diagram for Hummer H3 2007: 33 A14 A19 A42 A47 Acc Bcm fuse 14 10a Body control module (bcm) (behind right front kick panel) Class 2 serial data Clstr fuse 19 10a Engine controls system Frt trn/hazrd/ ctsy mir fuse 56 15a Fuel inj 1 ctrl Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 4 ctrl Fuel inj 5 ctrl G320 (under rear of middle console carpet) Gnd Hot at all times Ign key resistor sig Ignition switch Instrument panel cluster Lock Off/run/crank voltage Powertrain control module (at left front side of engine compt) Rear trn/ hazrd fuse 20 20a Run S320 Security ind ctrl Security indicator Start Theft Underhood fuse block (above left front wheel well)
BODY CONTROL MODULES Body Control Modules Wiring Diagram (1 of 2) for Hummer H3 2007 List of elements for Body Control Modules Wiring Diagram (1 of 2) for Hummer H3 2007: 94 (under rear of middle console carpet, on floor board) g320 A/c req sig A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 A31 A32 A33 A34 A35 A36 A37 A38 A39 A40 A41 A42 A43 A44 A45 A46 A47 A48 Accessory voltage Air conditioning system Anti-lock brakes system Battery + Bcm fuse 14 10a Body control module (behind right front kick panel) Class 2 serial data Computer data lines system Courtesy lamp low ctrl Courtesy lamp pwr Defogger system Door locks system Door unlock ctrl Drl rly ctrl Engine controls system Exterior lights system Fog lamp rly ctrl Frt trn/hazrd/ ctsy mir fuse 56 15a Ground Headlamp rly ctrl Headlights system Hi beam rly ctrl Horn rly ctrl Horns system Hot at all times Ign 3 voltage Interior lights system Left trn sig lamp pwr Lf door ajar sw sig Lr door ajar sw sig Lr turn sig lamps pwr Mirrors system Park brake sw sig Park lamp rly ctrl Pass dr lock sw lock ctrl Power distribution system Rap rly coil ctrl Rear defog rly ctrl Rear trn/ hazrd fuse 20 20a Red Rf door ajar sw sig Right trn sig lamp pwr Rr door ajar sw sig Rr turn sig lamps pwr Run/crnk voltage S320 Starting/charging system Stop lamp volt Underhood fuse block (above left front wheel well) Windshield washer pmp ctrl Wiper mtr prk sw sig Wiper sw sig 2 Wiper/washer system Body Control Modules Wiring Diagram (2 of 2) for Hummer H3 2007 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Hummer H3 2007: 93 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 A31 A32 A33 A34 A35 A36 A37 A38 A39 A40 A41 A42 A43 A44 A45 A46 A47 A48 Acc Accessory voltage Ambient light sens low ref Ambient light sens sig Anti-lock brakes system Anti-theft system Body control module (behind right front kick panel) Cellular phones system Class 2 serial data Computer data lines system Courtesy lamp low ctrl Courtesy lamp pwr Defogger system Dome override sw sig Exterior lights system Flash to pass sw sig Front fog lamp sw sig Front fog lamps ind ctrl Hazard sw sig Headlamp sw headlamps on sig Headlamps dim sw hi beam sig Headlamps sw off sig Headlights system Horn rly ctrl Horns system Hot at all times I/p lamp dimmer sw sig I/p lamps dim ctrl Ign key resistor sig Ignition switch (bottom center of steering column) Int lamp sw sig Interior lights system Key-in switch Low ref Off Off/run/crnk voltage Onstar voice sig Park lamp sw sig Rear defog sw sig Red Rr tcs vol Run Run/crnk voltage Security ind lamp Shift interlock system Shift sol pwr Start Tan Traction ctrl sw sig Turn sig sw sig Warning system Windshield washer pmp ctrl Wiper sw sig 1 Wiper/washer system
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Hummer H3 2007 List of elements for Computer Data Lines Wiring Diagram for Hummer H3 2007: 27 (behind glove box) transfer case shift control module (on right inner front wheel well) (right side of dash) digital radio receiver (under driver seat carpet, on floor board) g300 A38 A39 A41 A42 A44 A47 Aux pwr 1 fuse 51 20a Body control module (bcm) (behind right front kick panel) Cigar lighter Class 2 serial data Class 2 serial data c2 Data link connector (dlc) (left side of dash) Electronic brake control module (ebcm) (left of master cylinder) G106 Hot at all times Inflatable restraint sensing & diagnostic module (sdm) (beneath lower console) Instrument panel cluster (ipc) Powertrain control module (pcm) (at left front side of engine compt) Radio S205 S251 Underhood fuse block (above left front wheel well) Vehicle communication interface module (vcim) (center of dash below hvac control head)
CRUISE CONTROL Cruise Control Wiring Diagram for Hummer H3 2007 List of elements for Cruise Control Wiring Diagram for Hummer H3 2007: 49 5 volt reference Accelerator pedal position (app) sensor (on accelerator pedal bracket) App sensor 1 signal App sensor 2 signal Class 2 serial data Cluster fuse 19 10a Clutch release switch (at top of clutch pedal assembly) Coast Computer data lines system Cpp switch signal Cruise control on/off switch Cruise control switch signal Cruise indicator Cruise/misc fuse 35 10a G105 (on left inner front wheel well, behind battery) Hot at all times Hot in run or start Ignition Instrument panel cluster (ipc) Logic Low reference M/t Off On/ Pnk Power distribution system Powertrain control module (pcm) (at left front side of engine compt) Resume/ accel Run/crank relay S215 (in body harness, approximately 14 cm (5.5 in) to right of stop lamp switch breakout in main harness) Set/ Stop fuse 54 15a Stop lamp switch (above brake pedal assembly) Tac motor control-1 Tac motor control-2 Tan Tcc brake switch/cruise control release signal Tcc brake/cruise release switch (top of brake pedal assembly) Throttle actuator control (tac) motor Throttle body (top of engine, mounted on upper air intake manifold) Throttle position (tp) sens 1 Throttle position (tp) sens 2 Tp sensor 1 signal Tp sensor 2 signal Turn signal/multifunction switch Underhood fuse block (above left front wheel well) Vehicle speed sensor (vss) (left rear of transfer case) Vss high signal Vss low signal
DEFOGGERS Defoggers Wiring Diagram for Hummer H3 2007 List of elements for Defoggers Wiring Diagram for Hummer H3 2007: 24 A c1 A c2 A10 A24 A32 Body control module (bcm) (behind right front kick panel) Defogger indicator G105 (on left inner front wheel well, behind battery) G300 (under driver seat carpet) G350 (behind left rear quarter trim, near wheel well) Hot at all times Hvac control module (beneath radio) Logic R/wdo defg fuse 30 20a Rear defog ind sply voltage Rear defog switch sig Rear defogger switch Rear window defogger Relay cntrl Rr defog relay 71 S251 S900 Tan Underhood fuse block (above left front wheel well)
ENGINE PERFORMANCE
3.7L VIN E 3.7L VIN E, Engine Performance Wiring Diagram (1 of 5) for Hummer H3 2007 List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (1 of 5) for Hummer H3 2007: 65 (behind glove box) transfer case shift control module (in body harness, approximately 14 cm (5.5 in) to right of stop lamp switch breakout in main harness) s215 (in chassis harness, approximately 22.5 cm (8.9 in) from fuel pump & sender assembly connector) 4wd lo sw A/c comp rly A/c press A/c refrigerant pressure sensor (on high pressure hose connection to compressor) Accelerator pedal position (app) sensor (on accelerator pedal bracket) Accy voltage Air conditioning system Air pump rly App 1 +5v ref App 1 low ref App 2 +5v ref App 2 low ref App sens 1 App sens 2 Arp +5v ref Arp low ref Battery b+ Class 2 data Clstr fuse 19 10a Cnstr vent fuse 31 10a Computer data lines system Cpp sw sig Cruise control system Cruise ctrls Diag enable Evap vent sol Evaporative emission (evap) canister vent solenoid valve (above spare tire) Exterior lights system Ftp +5v ref Fuel lvl sens Fuel pump rly Fuel tank press Fuel tank pressure (ftp) sensor (top of fuel pump & sender assembly) Hot at all times Hot in run or start Ign Ignition 1 Instrument panel cluster Iss sig Logic Low ref Malfunction indicator lamp (mil) Mil ctrl Pcm-1 fuse 21 10a Pcm-b fuse 25 10a Pnk Pnp/clutch sig Powertrain control module (pcm) (at left front side of engine compt) Radio S359 Serial data Starter rly Starting/ charging system Stop fuse 54 15a Stop lamp Stop lamp switch (above brake pedal assembly) Tan Tcc brk sw Underhood fuse block (above left front wheel well) Upshift ind (m/t) Vss W/ navigation 3.7L VIN E, Engine Performance Wiring Diagram (2 of 5) for Hummer H3 2007 List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (2 of 5) for Hummer H3 2007: 33 (on left inner front wheel well, behind battery) Acc Accy input Accy output Air pump fuse 62 60a Air sol fuse 44 15a Air sol relay 80 Body control module (bcm) (behind right front kick panel) Electronic brake control module (ebcm) (left of master cylinder) Engine oil pressure (eop) switch (above oil filter) Etc fuse 46 15a Fuel pmp fuse 3 15a Fuel pump & sender assembly (mounted on top of fuel tank) Fuel pump relay G103 (on lower left side of engine block, forward of g102) G105 G420 (mounted to left side of rear crossmember) Heated oxygen sensor (ho2s) 1 (on exhaust manifold on left side of engine) Heated oxygen sensor (ho2s) 2 (in exhaust pipe, adjacent to transmission) Hot at all times Ignition switch Nca O2 snsr fuse 47 15a Off Pnk Pwr/ trn relay Red Run Secondary air injection (air) pump Secondary air injection (air) pump relay Secondary air injection (air) solenoid Start Underhood fuse block (above left front wheel well) 3.7L VIN E, Engine Performance Wiring Diagram (3 of 5) for Hummer H3 2007 List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (3 of 5) for Hummer H3 2007: 44 1-2 shift sole- noid 1-2 sol 2-3 shift sole- noid 2-3 sol 3-2 shift sole- noid 3-2 sol A/t fluid pressure manual valve position switch Air ctrl vlv Automatic transmission Del torque Evap purge Fluid temp sensor Ho2s 2 hi Ho2s 2 htr Ho2s 2 low Input speed sensor (iss) Low oil sw Low ref Oil press Park/neutral position (pnp) switch (left side of automatic transmission) Pc sol Pnk Powertrain control module (pcm) (at left front side of engine compt) Pressure control (pc) solenoid valve Red Req torque Rev S133 Tan Tcc pwm sol Tcc pwm sole- noid valve Tcc sol Tcc sole- noid valve Tfp sw a Tfp sw b Tfp sw c Tft sens Tr sw a Tr sw b Tr sw c Tr sw p Vehicle speed sensor (vss) (left rear of transfer case) Vss sig hi Vss sig low 3.7L VIN E, Engine Performance Wiring Diagram (4 of 5) for Hummer H3 2007 List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (4 of 5) for Hummer H3 2007: 24 (above left front wheel well) underhood fuse block Air pump relay fuse 17 10a Control Eng cntrl sys fuse 22 15a Evaporative emission (evap) canister purge solenoid valve (below intake, in back of alternator) G102 (on lower left side of engine block, G103 (on lower left side of engine block, forward of g102) Ground Hot in run or start Iat Ign fuse 33 15a Ignition Ignition coils (in center front of cam cover) Inj fuse 23 15a Intake air temperature (iat)/ mass air flow (maf) sensor (between air cleaner & throttle body) Maf Nca Plug Pnk Rearward of g103) Spark plug Tan Trans fuse 34 10a Underhood fuse block (above left front wheel well) 3.7L VIN E, Engine Performance Wiring Diagram (5 of 5) for Hummer H3 2007 List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (5 of 5) for Hummer H3 2007: 66 (at top right side rear of engine, on intake manifold) manifold absolute pressure (map) sensor (left rear of engine block, below starter) crankshaft position (ckp) sensor (on lower left side of engine block, rearward of g103) g102 (top front left of engine) intake camshaft position (cmp) sensor (top right front of engine) exhaust camshaft position (cmp) sensor Air +5v ref Air rly ctrl Camshaft position (cmp) actuator solenoid bank 1 exhaust (right front of cylinder head) Ckp low ref Ckp sig Cmp 1 sig Cmp 2 sig Cmp hi ctrl Cmp low ref Cmp1 +12v ref Cmp1 low ref Cmp2 +12v ref Cmp2 low ref Ect low ref Ect sens Engine coolant temperature (ect) sensor (front left of engine) Fuel inj 1 Fuel inj 2 Fuel inj 3 Fuel inj 4 Fuel inj 5 Fuel injectors (attached to fuel rail) Gen ctrl Gen field Ground Ho2s 1 high Ho2s 1 htr Ho2s 1 low Iat low ref Iat sens Ic 1 ctrl Ic 2 ctrl Ic 3 ctrl Ic 4 ctrl Ic 5 ctrl Knock sensor (ks) bank 2 (below intake manifold, near front of engine) Knock sig Low ref Maf sens Map +5v ref Map low ref Map sens Nca Pnk Pnk a Powertrain control module (pcm) (at left front side of engine compt) Red S103 Starting/ charging system Starting/charging system Tac mtr 1 Tac mtr 2 Tan Throttle body (top of engine, mounted on upper air intake manifold) Tp 1 +5v ref Tp 1 low ref Tp 2 +5v ref Tp 2 low ref Tp sens 1 Tp sens 2 Underhood fuse block (above left front wheel well)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Hummer H3 2007 List of elements for Back-up Lamps Wiring Diagram for Hummer H3 2007: 24 A nca A/t Back-up lamp switch (on top of transmission) Bck/up fuse 28 15a Bkup Electronic brake control module (ebcm) (left of master cylinder) G105 (on left inner front wheel well, behind battery) G340 (behind right rear quarter trim, near wheel well) G350 (behind left rear quarter trim, near wheel well) Harness into breakout to sunroof) s224 Hot at all times Hot in run or start Inside rearview mirror Left back-up lamp Left tail/ stop & turn signal lamp M/t Nca Park/neutral position (pnp) switch (left side of automatic transmission) Right back-up lamp Right tail/ stop & turn signal lamp Run/ crank relay 78 S314 S315 Underhood fuse block (above left front wheel well) Exterior Lamps Wiring Diagram (1 of 3) for Hummer H3 2007 List of elements for Exterior Lamps Wiring Diagram (1 of 3) for Hummer H3 2007: 49 A10 A19 A24 A26 A37 A45 A48 Auto Body control module (bcm) (behind right front kick panel) Bulb out Center high mounted stop lamp (chmsl) Dealer installed Frt trn/ hazrd/ctsy mir fuse 56 15a Frt/prk fuse 43 10a G105 (on left inner front wheel well, behind battery) G106 (on right inner front wheel well) G350 (behind left rear quarter trim, near wheel well) Haz sw sig Hazard switch Headlamp switch Hot at all times Left Left front marker lamp Left front park/ turn signal lamp Low ref Lr prk lp Off Park Prk lmp rly Prk lmp sw Prk/lp relay 89 Rap rly cntrl Rear trn/ hazrd fuse 20 20a Red Right Right front marker lamp Right front park/ turn signal lamp S109 S185 S205 S900 Stop fuse 54 15a Stop lamp switch (above brake pedal assembly) Stp lp volt To lr prk fuse 37 (diagram 2 0f 3) Trn sig sw Turn signal/ multi-function switch Turn switch Underhood fuse block (above left front wheel well) Exterior Lamps Wiring Diagram (2 of 3) for Hummer H3 2007 List of elements for Exterior Lamps Wiring Diagram (2 of 3) for Hummer H3 2007: 27 (approximately 18 cm (7 in) from breakout to c204) s305 Electronic brake control module (ebcm) (left of master cylinder) From a frt/prk fuse 43 (diagram 1 0f 3) G105 (on left inner front wheel well, behind battery) G340 (behind right rear quarter trim, near wheel well) G350 (behind left rear quarter trim, near wheel well) G420 (mounted to left side of rear cross member, near c420) Instrument panel cluster (ipc) Left tail/ stop & turn signal lamp Left turn ind License lamp Logic Lr prk fuse 37 10a Powertrain control module (pcm) (at left front side of engine compt) Red Right tail/ stop & turn signal lamp Right turn ind Roof marker lamps (w/ roof mounted marker lamp) Rr prk fuse 49 10a S309 S314 S315 Stp lmp volt Trlr fuse 55 10a Underhood fuse block (above left front wheel well) W/ trailer connector W/o trailer connector Exterior Lamps Wiring Diagram (3 of 3) for Hummer H3 2007 List of elements for Exterior Lamps Wiring Diagram (3 of 3) for Hummer H3 2007: 35 (in dealer installed off road harness, under roof-mounted light bar near drivers side lamp connector) s302 (near left side grille lamp connector) s105 (under roof- mounted light bar near drivers side lamp connector) s301 Back-up lamp circuit E-brake fuse 83 30a G105 (on left inner front wheel well, behind battery) G106 (on right inner front wheel well) G420 (mounted to left side of rear cross member, near c420) Grille guard fuse 2 20a Grille lamps relay Grille lamps switch Hot at all times Lamp connector) Left grille lamp Left roof lamp Rap/accy relay 88 Red Right grille lamp Right roof lamp Roof lamp switch Roof lamps relay Roof lp fuse 4 20a S101 S102 (in dealer installed off road harness, 1.5 cm (5.9 in) from roof lamps relay, near master cylinder) S103 (near grille lamps relay, by master cylinder) S205 Spo fuse 10 10a Trailer connector (if equipped) Trlr b+ fuse 84 30a Trlr bck/up fuse 42 10a Underhood fuse block (above left front wheel well) W/ off road radiator grill guard lamp, dealer installed W/ roof mounted off road lamp, dealer installed W/ trailer connector W/o trailer connector
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 3) for Hummer H3 2007 List of elements for Ground Distribution Wiring Diagram (1 of 3) for Hummer H3 2007: 46 A/c clutch diode A/c compressor clutch A/t Battery Brake fluid level switch Electric air injection reactor Electronic brake control module (ebcm) Fog/lp relay 69 Fuel pump relay 66 G100 (in engine compt, mounted to the lf inner fender, behind the battery) G102 (on lower left side of engine block, rearward of g103) G103 (on lower left side of engine block, forward of g102) G104 (left side of engine block, in front of starter) G105 (in dealer installed grille lamps off road harness, near left side grille lamp connector) G110 (left side of engine block, forward of g103) G120 (on left lower inner wheel well, near engine mount) Generator battery control module Hi/lo beam relay 70 Hi/low wpr relay 73 Horn assembly If equipped Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Left front fog lamp Left front marker Left front park/turn signal lamp Left front position lamp Mass air flow (maf)/ intake air temperature (iat) sensor On/off wpr relay 72 Park/ neutral position (pnp) switch Powertrain control module (pcm) Right front fog lamp Right front marker lamp Right front park/turn signal lamp Right front position lamp Run/ crank relay 78 S110 (in body harness near ebcm, approximately 7.5 cm (3 in) back from ebcm) S185 in forward lamp harness, approximately 25 cm (9.8 in) from c115 Secondary air injection (air) solenoid Sunroof motor Sunroof switch Underhood fuse block (above left front wheel well) Wind- shield wiper motor Ground Distribution Wiring Diagram (2 of 3) for Hummer H3 2007 List of elements for Ground Distribution Wiring Diagram (2 of 3) for Hummer H3 2007: 39 Automatic transmission floor shift control Center high mounted stop lamp (chmsl) Driver door lock & window switch Driver lumbar adjuster/ heater switch Driver seat adjuster switch Driver seat back heater element Fuel pump & sender assembly G340 (behind right rear quarter trim, near wheel well) G345 (behind left rear quarter trim, near wheel well) G350 (behind left rear quarter trim, near wheel well) G420 (mounted to left side of rear cross member, near c420) Left backup lamp Left rear door window switch Left tail/ stop & turn signal lamp License lamp Nca Outside rearview mirror switch Passenger door lock & window switch Passenger heated seat module Passenger lumbar adjuster/ heater switch Passenger seat adjuster switch Passenger seat back heater element Passenger seat cushion heater element Rear auxiliary power outlet Rear window defogger Rear window wiper motor Right backup lamp Right rear door lock & window switch Right tail/ stop & turn signal lamp S306 (in driver seat harness in breakout to lumbar adjuster/heater switch) S314 (in body harness, approximately 44.5 cm (17.5 in) rearward of breakout to left seat belt pretensioner) S316 (in passenger seat harness, approximately 5 cm (2 in) before breakout to seat adjuster & lumbar adjuster/heater switches) S317 (in passenger seat heater element jumper harness) S318 (in passenger seat heater element jumper harness) S514 (in driver door harness, approximately 6.5 cm (2.6 in) before breakouts to door lock & window switch) S900 (in endgate harness, approximately 19.5 cm (7.7 in) rearward of endgate grommet) Trailer connector W/ hd truck trailer wiring W/o hd truck trailer wiring Ground Distribution Wiring Diagram (3 of 3) for Hummer H3 2007 List of elements for Ground Distribution Wiring Diagram (3 of 3) for Hummer H3 2007: 49 A12 Accessory switch Audio amplifier Body control module (bcm) Breakout to left footwell lamp) Convenience package decor level 3 Data link connector (dlc) Digital radio receiver Dome/ reading lamp Driver door ajar switch Endgate ajar switch Exc convenience package decor level 3 Front auxiliary power outlet 1 Front auxiliary power outlet 2 G106 (on right inner front wheel well) G300 (under driver seat carpet, on floor board) G310 (mounted under left side of passenger seat) G320 (under rear of middle console carpet, on floor board) Garage door opener Hazard switch Headlamp dimmer switch High speed blower motor relay Hvac control module Ignition lock cylinder control actuator Inflatable restraint passenger presense module Inflatable restraint sensing & diagnostic module (sdm) Inflatable restraint vehicle rollover sensor Inside rearview mirror Instrument panel cluster (ipc) Left rear door ajar switch Left seat belt switch Left sunshade Passenger door ajar switch Pnk Radio Rear window wiper/washer switch Right rear door ajar switch Right seat belt switch Right sunshade S206 (in i/p harness, approximately 7 cm (2.8 in) right of breakout to right footwell lamp) S300 (in body harness, approximately 20 cm (7.9 in) forward of left rocker channel cover) S320 (in body harness rear seat area along sill, approximately 20 cm (7.9 in) rearward of breakout to g320) S340 (in dome lamp jumper harness, approximately 10 cm (3.9 in) before breakout to right sunshade) Steering wheel position sensor Transfer case control module Turn signal/ multifunction switch Vehicle communication interface module (vcim) Windshield washer fluid pump Yaw rate/ lateral & longitudinal accelerometer sensor
HEADLIGHTS Headlights Wiring Diagram for Hummer H3 2007 List of elements for Headlights Wiring Diagram for Hummer H3 2007: 67 (near center point of top of radiator, approximately 58 cm (22.8 in) from c115) (near left upper radiator support, approximately 48.5 cm (19.1 in) from c115) A10 A11 A18 A31 A36 A37 A39 A43 Ambient light sensor (right side of dash upper trim panel) Ambient lt sens Auto B10 Bm sel rly ctrl Body control module (behind right front kick panel) Class 2 data Class 2 ser data Class 2 serial data Drl fuse 39 10a Drl ind Drl relay Drl rly ctrl Flash to pass Fog lmp ind Fog lp fuse 24 15a Fog lp rly ctrl Fog lp sw sig Front fog lamp ind Front fog lamp switch Frt fog lp relay G105 (on left inner front wheel well, behind battery) G106 (on right inner front wheel well) Hdlp dim sw sig Hdlp off sig Hdlp on sig Hdlp relay Hdlp rly ctrl Headlamp dimmer switch Headlamp switch Hi/lo beam relay 70 High beam High beam ind Hot at all times Ign Instrument panel cluster Left front fog lamp Left head- lamp Lh hdlp fuse 41 10a Low ref Off Park Park brake switch (left lower side of dash) Pk brake sig Pnk Red Rh hdlp fuse 40 10a Right front fog lamp Right head- lamp S112 S120 S134 (approximately 15 cm (5.9 in) from c115) S145 S185 S205 Turn signal/ multifunction switch Underhood fuse block (above left front wheel well)
HORN Horn Wiring Diagram for Hummer H3 2007 List of elements for Horn Wiring Diagram for Hummer H3 2007: 17 A25 A40 Body control module (behind right front kick panel) G105 (on left inner front wheel well, behind battery) Horn (front of vehicle, behind grill) Horn contact Horn contact in Horn fuse 36 10a Horn relay 74 Horn rly cntrl Hot at all times Nca S185 Turn signal cancel cam Turn signal/ multi-function switch Underhood fuse block (above left front Wheel well)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram for Hummer H3 2007 List of elements for Instrument Cluster Wiring Diagram for Hummer H3 2007: 91 (at left front side of engine compt) powertrain control module (pcm) (in chassis harness, approximately 22.5 cm (8.9 in) from fuel pump & sender assembly connector) (under driver seat carpet, on floor board) g300 A nca A19 A26 A31 A38 A39 A41 A42 A44 A47 Abs ind Accessory switch Air bag ind B nca Battery Battery ind Body control module (bcm) (behind right front kick panel) Brake fluid level switch (on left side of brake fluid reservoir) Brake ind Brk fluid lvl C nca Chime Class 2 serial data Clstr fuse 19 10a Computer data lines system Coolant temp Cruise ind Driver information center (dic) Driver seat belt switch (part of seat belt buckle (driver)) Ect sense Electronic brake control module (ebcm) (left of master cylinder) Engine controls system Engine coolant Engine oil pressure (eop) switch (above oil filter) Fuel Fuel level Fuel pump & sender assembly (mounted on top of fuel tank) G105 (on left inner front wheel well, behind battery) G106 (on right inner front wheel well) G310 (mounted under left side of passenger seat) Ground High beam ind Hot at all times Ign Illumination (4 bulbs) Inflatable restraint sensing & diagnostic module (sdm) (beneath lower console) Instrument panel cluster (ipc) Km 0000000 L turn ind Left turn ind Logic Low ref Mil Nca Oil Oil press Oil pressure ind Park brake switch (left lower side of dash) Passenger seat belt ind Passenger seat belt switch (part of seat belt buckle (passenger)) Pnk Prk brk sw Prnd321 R turn ind Red Right turn ind S110 S205 S251 S310 S359 Seat belt ind Seat belt sw Security ind Security/ctd ind Ser data Serial data Service engine soon ind Speedo- meter Stability control ind Tacho- meter Temperature (ect) sensor (front left of engine) Tpm ind Trip Trip reset Underhood fuse block (above left front wheel well) Up shift ind (m/t) Volts
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Hummer H3 2007 List of elements for Courtesy Lamps Wiring Diagram for Hummer H3 2007: 64 (in body harness, approximately 6 cm (2.4 in) to right of stop lamp switch breakout in main harness) s209 A10 A11 A12 A24 A30 A32 A38 A39 A40 A41 A44 A46 A47 Approximately 5 cm (2 in) before breakout to dome/ reading lamp) s350 Battery Bcm fuse 14 10a Body control module (bcm) (behind right front kick panel) Dome lamp Dome on switch Dome override switch Dome/ reading lamps Driver door ajar switch (in lower left "b" pillar) Driver door lock & window switch c1 Endgate ajar switch (in right "d" pillar) Fr/prk fuse 43 10a Frt turn/ hazard/ ctsy mir fuse 56 15a G106 (on right inner front wheel well) G300 (under driver seat carpet, on floor board) G320 (under rear of middle console carpet, on floor board) G340 (behind right rear quarter trim, near wheel well) G350 (behind left rear quarter trim, near wheel well) Headlamp switch Hot at all times Lamp sw sig Left footwell courtesy lamp Left rear door ajar switch (in lower left "c" pillar) Left rear window switch Left sunshade Left vanity mirror Lf door ajar Low ref Lr door ajar Override sw Passenger door ajar switch (in lower right "b" pillar) Passenger door lock & window switch Pk lp ctrl Prk/lp relay Rf door ajar Right footwell courtesy lamp Right rear door ajar switch (in lower right "c" pillar) Right rear window switch Right sunshade (convenience package decor level 3) Right vanity mirror Rr door ajar S300 S314 S315 S320 S330 (in dome lamp jumper harness, approximately 5 cm (2 in) before breakout to right sunshade) b S340 S347 (in body harness, approximately 42 cm (16.5 in) rearward of breakout to right seat belt pretensioner) S514 Underhood fuse block (above left front wheel well) Instrument Illumination Wiring Diagram for Hummer H3 2007 List of elements for Instrument Illumination Wiring Diagram for Hummer H3 2007: 55 (5 bulbs) (in body harness, approximately 6 cm (2.4 in) to right of stop lamp switch breakout in main harness) s209 (not used) A10 A24 A27 A28 A29 A30 A33 A34 A36 A48 Accessory switch Auto Back lighting Battery Bcm fuse 14 10a Body control module (bcm) (behind right front kick panel) C204 Dim control Dim sw sig Driver door lock & window switch c1 Frt/prk fuse 43 10a G105 (on left inner front wheel well, behind battery) G106 (on right inner front wheel well) G340 (behind right rear quarter trim, near wheel well) G350 (behind left rear quarter trim, near wheel well) Gnd Hazard switch Head Headlamp switch Hot at all times Hvac control module (beneath radio) Instrument panel lamps dimming control Left rear window switch Low ref Lr prk fuse 37 10a Off Park Passenger door lock & window switch Pk lp ctrl Prk/lp relay Radio Rear window wiper/washer switch Right rear window switch S205 S210 S315 S514 Sunroof switch Sw sig Underhood fuse block (above left front wheel well) W/ sunroof W/o sunroof
NAVIGATION Navigation Wiring Diagram for Hummer H3 2007 List of elements for Navigation Wiring Diagram for Hummer H3 2007: 16 A12 Coax Computer data lines system Engine controls system G300 (under driver seat carpet, on floor board) Global positioning system (gps) antenna Ground Hot at all times Navi antenna Radio Rdo fuse 13 10a S214 S251 Serial data Underhood fuse block (above left front wheel well) Veh speed sen
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Hummer H3 2007 List of elements for Power Distribution Wiring Diagram (1 of 4) for Hummer H3 2007: 85 (above left front wheel well) underhood fuse block (approximately 2 cm (0.8 in) before breakout to c125) (approximately 24.5 cm (9.6 in) rearward of body pass through in breakout to left door) s264 (behind right rear quarter trim, near wheel well) g340 (not used) (on right inner front wheel well) g106 Abs/vses1 -mtr fuse 67 40a Abs/vses2 -sol fuse 64 30a Amp fuse 38 25a Automatic transmission floor shift control Aux pwr 1 fuse 51 20a Aux pwr 2 fuse 45 20a Battery Bcm fuse 10a Body control module Body control module (bcm) C201 Cluster fuse 19 10a Cnstr vent fuse 31 10a Data link connector (dlc) Digital radio receiver Diode Driver door lock & window switch Driver seat cushion heater element E-brake fuse 83 30a Electronic brake control module (ebcm) Evaporative emission (evap) canister vent solenoid valve From b aux pwr 1 fuse 51 (diagram 1 of 4) From c rear trn/ hazrd fuse 20 (diagram 1 of 4) Front 1 auxiliary power outlet Front 2 auxiliary power outlet Front passenger door lock & window switch Frt trn/ hazrd/ ctsy mir fuse 56 15a Generator Grille lamps relay (dealer installed) Htd/seats fuse 1 20a Hvac control module Instrument panel cluster (ipc) Left rear window switch Lt pwr wndw fuse 68 30a Mega fuse fuse 91 125a Nca Passenger heated seat module Pcm cntrl relay Pcm-b fuse 25 10a Powertrain control module (pcm) Pwr s/roof fuse 57 30a Pwr/ lock fuse 8 20a Radio Radio fuse 13 10a Rap/ accy relay Rear auxiliary power outlet Rear trn/hazrd fuse 20 20a Rear window washer fluid pump Rear window wiper/ washer module Rear window wiper/ washer switch Rear wpr sw/pump fuse 16 15a Rear/wpr mtr fuse 15 15a Red Right rear window switch Rt pwr wndw fuse 63 30a S/roof frt/wpr fuse 9 15a S143 S205 S319 (in passenger seat heater element jumper harness) Sdars fuse 50 10a Spo fuse 10 10a Start fuse 30a Starter Stop fuse 54 15a Stop lamp switch Sunroof module Sunroof motor Tccm fuse 12 30a To onstar fuse (diagram 4 of 4) To powertrain relay 81 (diagram 2 of 4) To pwr/ lock fuse 8 (diagram 1 of 4) To rap/accy relay 88 (diagram 1 of 4) Trailer connector Transfer case shift control module Trlr b+ fuse 84 30a Turn signal/multi- function switch Underhood fuse block (above left front wheel well) W/ hd truck trailer wiring harness Windshield wiper/washer switch Power Distribution Wiring Diagram (2 of 4) for Hummer H3 2007 List of elements for Power Distribution Wiring Diagram (2 of 4) for Hummer H3 2007: 53 (in driver seat harness, approximately 28.5 cm (11.2 in) back from c307) s312 (in passenger seat harness, approximately 10 cm (3.9 in) before breakout to seat adjuster and lumbar adjuster/heater switches) s341 1-2 shift solenoid (1-2 ss) valve 2-3 shift solenoid (2-3 ss) valve 3-2 shift solenoid (3-2 ss) valve A/t Accessory switch Air bag fuse 27 10a Air pump fuse 62 60a Air pump rly fuse 60a Clutch release switch (m/t) Cruise/misc fuse 35 10a Driver lumbar adjuster/ heater switch Driver seat adjuster switch Drl fuse 39 10a Drl relay Fog/lp relay From fuel/ e pump relay 66 (diagram 2 of 4) From rap/ d accy relay 88 (diagram 1 of 4) Frt/wiper fuse 25a Fuel/ pump relay G105 (on left inner front wheel well, behind battery) Generator battery control module Hdlp relay Horn relay Inflatable restraint front passenger presence system (pps) sensor Inflatable restraint sensing & diagnostic module (sdm) Inflatable restraint vehicle rollover sensor Inside rearview mirror On/off wiper relay Passenger lumbar adjuster/ heater switch Passenger seat adjuster switch Pnk Powertrain relay Pwr/ seats fuse 61 40a Red Run/ crank relay Rvc pwr fuse 7 10a Rvc vsense+ fuse 32 10a S133 Seat circuit breaker 20a Secondary air injection (air) pump relay Tcc brake/ cruise release switch To air cmprsr fuse 11 (diagram 3 of 4) To bak/up fuse 28 (diagram 3 of 4) To body control module (diagram 4 of 4) To run/ crank relay 78 (diagram 2 of 4) Torque converter clutch (tcc) solenoid valve Torque converter clutch pulse width modulation (tcc pwm) solenoid valve Trans fuse 34 10a Turn signal/ multi-function switch Underhood fuse block (above left front wheel well) W/ air injection reactor system Power Distribution Wiring Diagram (3 of 4) for Hummer H3 2007 List of elements for Power Distribution Wiring Diagram (3 of 4) for Hummer H3 2007: 65 (above left front wheel well) underhood fuse block (approximately 15 cm (6 in) from c203) s220 (approximately 5 cm (0.2 in) before breakout to ebcm) s141 (in dealer installed off road harness, 1.5 cm (5.9 in) from roof lamps relay, near master cylinder) s101 (in engine compartment harness, near grille lamps relay, by master cylinder) s103 (not used) A/c clutch diode 90 A/c clutch fuse 48 10a A/c clutch relay A/c compressor clutch A/t A26 Abs/vses fuse 29 10a Accessory switch Air cmprsr fuse 11 25a Back-up lamp switch Bak/up fuse 28 15a Blower motor Body control module (bcm) Clutch start switch Driver lumbar adjuster/ heater switch Electronic brake control module (ebcm) Eng cntrl sys fuse 22 15a Evaporative emission (evap) canister purge solenoid valve From ign 1 i fuse 33 (diagram 3 of 4) From injector fuse 23 (diagram 3 of 4) From run/ crank relay 78 (diagram 2 of 4) From trans f fuse 34 (diagram 2 of 4) Fuel injector Grille guard fuse 2 20a Grille guard lamps relay (dealer installed) High speed blower motor relay Hvac blwr fuse 82 30a Hvac cntrl hd fuse 59 10a Hvac control module Hvac relay Ign 1 fuse 33 15a Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Injector fuse 23 15a Intake air temperature (iat)/mass air flow (maf) sensor M/t Nca Park/ neutral position (pnp) switch Passenger lumbar adjuster/ heater switch Pcm i fuse 21 10a Pnk Powertrain control module (pcm) Pwr htr switch fuse 53 10a Red Roof lamps relay (dealer installed) Roof lp fuse 4 20a Rr defor relay Steering wheel position sensor (swps) Tccm switch fuse 58 10a To a/c clutch relay 76 (diagram 3 of 4) To batt ign sw fuse 5 (diagram 4 of 4) To eng cntrl sys fuse 22 (diagram 3 of 4) Underhood fuse block (above left front wheel well) Vses/ abs fuse 52 10a W/ active brake control Yaw rate/ lateral & longitudinal accelerometer sensor Power Distribution Wiring Diagram (4 of 4) for Hummer H3 2007 List of elements for Power Distribution Wiring Diagram (4 of 4) for Hummer H3 2007: 52 (in body harness under left door sill plate, approximately 41 cm (16.1 in) rearward of body pass through in main bundle) s309 (in body harness, approximately 6 cm (2.4 in) to right of stop lamp switch breakout in main harness) s209 (in forward lamp harness, approximately 43 cm (17 in) from c115) s109 10a 5-volts reference A14 A48 Acc Accessory voltage Batt ign sw fuse 5 10a Body control module (bcm) Body control module (bcm) (behind right front kick panel) C1 b7 C2 a42 Digital radio receiver Driver door lock & window switch From battery a (diagram 1 of 4) From rr k defor relay 71 (diagram 3 of 4) From run/crank relay 78 (diagram 2 of 4) Front passenger door lock & window switch Frt/prk fuse 43 10a Ignition switch Key-in switch Left front marker lamp Left front park/turn signal lamp Left rear door window switch Left tail/stop & turn signal lamp License lamp Lr prk fuse 37 10a Off Off/run/ crank voltage Onstar fuse Powertrain control module (pcm) Prk/ lp relay Red Right front marker lamp Right front park/turn signal lamp Right rear door window switch Right tail/stop & turn signal lamp Roof marker lamps Rr prk fuse 49 10a Run Run/ crank voltage S234 (w/ digital audio) (in i/p harness center dash area, approximately 5 cm (2 in) left of breakouts to hvac in main bundle) Start Theft resistor Trailer connector Trlr fuse 55 10a Underhood fuse block (above left front wheel well) Vehicle communication interface module (vcim) W/ digital audio W/ roof mounted marker lamps
POWER DOOR LOCKS Power Door Locks Wiring Diagram for Hummer H3 2007 List of elements for Power Door Locks Wiring Diagram for Hummer H3 2007: 53 (in body harness, approximately 3 cm (1.2 in) to left of park brake switch breakout) (in body harness, approximately 3 cm (1.2 in) to right of park brake switch breakout) s295 (not used) A11 A12 A38 A39 A41 A42 A44 A47 All doors lock ctrl All doors unlock ctrl Battery + Bcm fuse 14 10a Body control module (bcm) (behind right front kick panel) Class 2 serial data Computer data lines system Door unlock Door unlock ctrl Driver door lock & window switch Driver door lock actuator (in center rear of driver door) Driver door unlock ctrl Driver unlock relay Endgate door lock actuator (on right side of endgate) Frt turn/ hazrd/ctsy mir fuse 56 15a G320 (under rear of middle console carpet, on floor board) G340 (behind right rear quarter trim, near wheel well) G350 (behind left rear quarter trim, near wheel well) Ground Hot at all times Left rear door lock actuator (in center rear of left rear door) Lock relay Lock sw Lock switch Logic Pass door lock ctrl Passenger door lock & window switch Passenger door lock actuator (in center rear of passenger door) Pwr/ lks fuse 8 20a Rear trn/ hazrd fuse 20 20a Right rear door lock actuator (in center rear of right rear door) S244 (in body harness behind passenger side dash area, approximately 25 cm (9.8 in) before breakout to right front door) S294 S315 S320 S514 S529 (in driver door harness, approximately 7.5 cm (3 in) before breakout to power window motor) Tan Underhood fuse block (above left front wheel well) Unlock relay Unlock sw Unlock switch
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Hummer H3 2007 List of elements for Electrochromic Mirror Wiring Diagram for Hummer H3 2007: 21 Ambient air temp sensor Ambient air temperature sensor (attached to front center of radiator support) Cruise/ misc fuse 35 10a Exterior lights system G105 (on left inner front wheel well, behind battery) G300 (under driver seat carpet, on floor board) Gnd Hot at al times Hot in run or start Ignition 1 voltage Inside rearview mirror Keypad green led sig Keypad red led sig Keypad signal Low ref Pnk Power distribution system Run/ crnk relay 78 S300 Underhood fuse block (above left front wheel well) Vehicle communication interface module (center of dash below hvac control head) Power Mirrors Wiring Diagram for Hummer H3 2007 List of elements for Power Mirrors Wiring Diagram for Hummer H3 2007: 18 A29 Body control module (behind right front kick panel) Cm (3 in) before breakout to osrvm) Driver outside rearview mirror Front passenger outside rearview mirror Frt trn/hazrd ctsy mir fuse 56 15a G350 (behind left rear quarter trim, near wheel well) Horz Hot at all times Left Nca Off Outside rearview mirror switch Right S514 S590 (in driver door harness, approximately 7.5 Underhood fuse block (above left front wheel well) Vert
POWER SEATS Driver Heated Seat Wiring Diagram for Hummer H3 2007 List of elements for Driver Heated Seat Wiring Diagram for Hummer H3 2007: 30 (in driver heater element jumper harness) (in driver heater element jumper harness) s324 A nca A26 B nca Body control module (behind right front kick panel) C nca Driver heated seat module (in driver seat bottom) Driver lumbar adjuster/ heater switch Driver seat back heater element (in driver seat back) Driver seat cushion heater element (in driver seat bottom) G345 (behind left rear quarter trim, near wheel well) Gnd High High/low status ind bulb Hot at all times Htd/seats fuse 1 20a Hvac relay Ign 3 rly coil Low Nca Passenger heated seat circuit Pnk Pwr htr switch fuse 53 10a Red S306 S321 (in driver heater element jumper harness) S322 S325 Underhood fuse block (above left front wheel well) Driver Power Seat Wiring Diagram for Hummer H3 2007 List of elements for Driver Power Seat Wiring Diagram for Hummer H3 2007: 18 25a Back Driver seat adjuster switch Driver seat motors (under driver seat) Front vertical Fwd G345 (behind left rear quarter trim, near wheel well) Hot at all times Lumbar circuit M horiz- ontal Nca Pwr/seats fuse 61 40a Rear vertical S306 S312 Seat circuit breaker Tan Underhood fuse block (above left front wheel well) Lumbar Wiring Diagram for Hummer H3 2007 List of elements for Lumbar Wiring Diagram for Hummer H3 2007: 19 25a Driver lumbar adjuster/ heater switch Driver lumbar pump motor (in driver seat) Driver power seat circuit G345 (behind left rear quarter trim, near wheel well) Hot at all times Nca Out Passenger lumbar adjuster/ heater switch Passenger lumbar pump motor (in passenger seat) Passenger power seat circuit Pnk Pwr/seats fuse 61 40a S306 S312 S316 S341 Seat circuit breaker Underhood fuse block (above left front wheel well) Passenger Power Seat Wiring Diagram for Hummer H3 2007 List of elements for Passenger Power Seat Wiring Diagram for Hummer H3 2007: 18 25a Front vertical Fwd G345 (behind left rear quarter trim, near wheel well) Hot at all times Lumbar circuit M horiz- ontal Passenger seat adjuster switch Passenger seat motors (under passenger seat) Pwr/seats fuse 61 40a Rear vertical Rwd S312 S316 S341 Seat circuit breaker Tan Underhood fuse block (above left front wheel well) Passenger"s Heated Seat Wiring Diagram for Hummer H3 2007 List of elements for Passenger"s Heated Seat Wiring Diagram for Hummer H3 2007: 36 (in passenger heater element jumper harness) (in passenger heater element jumper harness) s319 (not used) A nca A26 B nca Body control module (behind right front kick panel) C nca D nca Dr htd seat sw off sig Driver heated seats circuit G345 (behind left rear quarter trim, near wheel well) Gnd High High/low status ind bulb Hot at all times Htd/seats fuse 1 20a Hvac relay Ign 3 Ign 3 rly coil Logic Low Nca Passenger heated seat module (in passenger seat bottom) Passenger lumbar adjuster/ heater switch Passenger seat back heater element (in passenger seat back) Passenger seat belt buckle switch Passenger seat cushion heater element (in passenger seat bottom) Pnk Pwr htr switch fuse 53 10a Red S313 S316 S317 (in passenger heater element jumper harness) S318 Underhood fuse block (above left front wheel well)
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Hummer H3 2007 List of elements for Power Top/Sunroof Wiring Diagram for Hummer H3 2007: 22 Acc volt Body control module (bcm) (behind right front kick panel) Closed G105 (on left inner front wheel well, behind battery) Ground Hot at all times Interior lights system Logic Motor Open Pwr sunroof fuse 57 30a Rap rly Rap/accy relay S/roof frt/wpr fuse 9 10a S143 S210 Sunroof actuator m Sunroof motor (at front of sunroof module) Sunroof switch Sw closed Sw open Underhood fuse block (above left front wheel well)
POWER WINDOWS Power Windows Wiring Diagram for Hummer H3 2007 List of elements for Power Windows Wiring Diagram for Hummer H3 2007: 34 (in body harness, approximately 11 cm (4.3 in) to right of stop lamp switch breakout in main harness) s213 Down Down relay Driver door lock & window switch Driver window motor (attached to interior of left front door) Dwn G340 (behind right rear quarter trim, near wheel well) G350 (behind left rear quarter trim, near wheel well) Hot w/ rap/acc relay energized Ill Interior lights system Left rear window motor (attached to interior of left rear door) Left rear window switch Logic Lr down Lr up Lt pwr window fuse 68 30a Passenger door lock & window switch Passenger window motor (attached to interior of right front door) Rf down Rf up Right rear window motor (attached to interior of right rear door) Right rear window switch Rr down Rr up Rt pwr window fuse 63 30a S247 S264 S314 S315 Tan Underhood fuse block (above left front wheel well) Up relay W/l
RADIO Base Radio Wiring Diagram for Hummer H3 2007 List of elements for Base Radio Wiring Diagram for Hummer H3 2007: 46 A10 A11 A12 Audio comm sig B10 B11 B12 Bare Coax Common sig Computer data lines system Drain wire Engine controls system G106 (on right inner front wheel well) G300 (under driver seat carpet, on floor board) Ground Hot at all times Left aud sig Left audio sig Left front door speaker Left front tweeter speaker Left rear door speaker Lf out + Lf out - Lr out + Lr out - Radio Radio antenna Rdo fuse 13 10a Rf out + Rf out - Right aud sig Right front door speaker Right front tweeter speaker Right rear door speaker Rr out + Rr out - S205 S214 S251 Satellite radio circuit Serial data Tan Underhood fuse block (above left front wheel well) Vehicle communication interface module (center of dash below hvac control head) Vss Premium Radio Wiring Diagram (1 of 2) for Hummer H3 2007 List of elements for Premium Radio Wiring Diagram (1 of 2) for Hummer H3 2007: 43 A10 A11 A12 Audio comm sig B10 B11 B12 Bare Coax Common sig Computer data lines system Drain wire Engine controls system G106 (on right inner front wheel well) G300 (under driver seat carpet, on floor board) Ground Hot at all times Left aud sig Left audio sig Lf out + Lf out - Lr out + Lr out - Pnk Radio Radio antenna Radio mute Radio on sig Rdo fuse 13 10a Rf out + Rf out - Right aud sig Rr out + Rr out - S205 S214 S251 Satellite radio circuit Serial data Tan Underhood fuse block (above left front wheel well) Vehicle communication interface module (center of dash below hvac control head) Vss Premium Radio Wiring Diagram (2 of 2) for Hummer H3 2007 List of elements for Premium Radio Wiring Diagram (2 of 2) for Hummer H3 2007: 43 Amp fuse 38 25a Audio amplifier (mounted next to subwoofer) G300 (under driver seat carpet, on floor board) Ground Hot at all times Info not available L spk out + L spk out - Left front door speaker Left front tweeter speaker Left rear door speaker Left subwoofer Lf aud sig + Lf aud sig - Lf spkr out + Lf spkr out - Lr aud sig + Lr aud sig - Lr spkr out + Lr spkr out - Nca Pnk R spk out + R spk out - Radio mute sig Radio on sig Rem amp sig Rf aud sig + Rf aud sig - Rf spkr out + Rf spkr out - Right front door speaker Right front tweeter speaker Right rear door speaker Right subwoofer Rr aud sig + Rr aud sig - Rr spkr out + Rr spkr out - S300 Subwoofer speaker Tan Underhood fuse block (above left front wheel well) Satellite Radio Wiring Diagram for Hummer H3 2007 List of elements for Satellite Radio Wiring Diagram for Hummer H3 2007: 21 Antenna sig Aud common Audio common Bare Battery Cellular & navigation antenna (mounted to right front roof area) Coax Digital radio receiver (right side of dash) Drain wire G300 (under driver seat carpet, on floor board) Ground Hot at all times Lt aud sig Lt aud sig+ Onstar fuse 10 10a Radio Rt aud sig Rt aud sig+ S234 S251 Serial data
SHIFT INTERLOCK Ignition Lock Solenoid Wiring Diagram for Hummer H3 2007 List of elements for Ignition Lock Solenoid Wiring Diagram for Hummer H3 2007: 11 Automatic transmission floor shift control (beneath center console) Body control module (bcm) (behind right front kick panel) G106 (on right inner front wheel well) Hot at all times Ignition lock cylinder control actuator (on upper right side of steering column) Park position switch (closed in park) Rap relay Rap/accy relay S143 S205 Underhood fuse block (above left front wheel well) Shift Interlock Wiring Diagram for Hummer H3 2007 List of elements for Shift Interlock Wiring Diagram for Hummer H3 2007: 15 A/t shift lock control solenoid A31 c2 A47 c1 Automatic transmission floor shift solenoid B+ voltage Bcm fuse 14 10a Body control module (bcm) (behind right front kick panel) C1 a7 Class 2 serial data Computer data lines system G350 (behind left rear quarter trim, near wheel well) Hot at all times Powertrain control module (pcm) (at left front side of engine compt) S314 Underhood fuse block (above left front wheel well)
STARTING/CHARGING Charging Wiring Diagram for Hummer H3 2007 List of elements for Charging Wiring Diagram for Hummer H3 2007: 30 (not used) B+ s Batt pos vol Batt pos vol field duty cycle sig c Battery Class 2 data Class 2 serial data Class 2 series data Computer data lines system G100 (in engine compt, mounted to the lf inner fender, behind the battery) G102 (on lower left side of engine block, rearward of g103) G104 (left side of engine block, in front of starter) Generator Generator battery control module Generator field duty cycle sig Generator regulator cycle sig Gnd Instrument panel cluster (ipc) Logic Megafuse fuse 91 125a Powertrain control module (pcm) (at left front side of engine compt) Red Reg contrl Rvc pwr fuse 7 10a Rvc vsense+ fuse 32 10a S136 Starter Turn on sig Underhood fuse block (above left front wheel well) Volts Starting Wiring Diagram, A/T for Hummer H3 2007 List of elements for Starting Wiring Diagram, A/T for Hummer H3 2007: 25 Acc Batt ign sw fuse 5 10a Battery Body control module (bcm) (behind right front kick panel) C1 b6 C2 b8 G100 (in engine compt, mounted to the lf inner fender, behind the battery) G104 (left side of engine block, in front of starter) G105 (on left inner front wheel well, behind battery) Ign 1 fuse 33 15a Ignition switch Off Park/neutral position (pnp) switch (left side of automatic transmission) Pcm ctrl relay 77 Pnk Pnp start switch sig Powertrain control module (pcm) (at left front side of engine compt) Red Run Run/crank relay 78 Start Starter Starter enable relay ctrl Starter fuse 85 30a Underhood fuse block (above left front wheel well) Starting Wiring Diagram, M/T for Hummer H3 2007 List of elements for Starting Wiring Diagram, M/T for Hummer H3 2007: 26 (not used) Acc Batt ign sw fuse 5 10a Battery Body control module (bcm) (behind right front kick panel) C1 b6 C2 b8 Clutch start switch (at top of clutch pedal assembly) G100 (in engine compt, mounted to the lf inner fender, behind the battery) G104 (left side of engine block, in front of starter) G105 (on left inner front wheel well, behind battery) Ign 1 fuse 33 15a Ignition switch Off Pcm ctrl relay 77 Pnk Pnp start switch sig Powertrain control module (pcm) (at left front side of engine compt) Red Run Run/crank relay 78 Start Starter Starter enable relay ctrl Starter fuse 85 30a Underhood fuse block (above left front wheel well)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Hummer H3 2007 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Hummer H3 2007: 52 Accessory switch Airbag fuse 27 10a G310 G310 (mounted under left side of passenger seat) Gnd Hot w/ run/crank relay energized I/p stage 1-h I/p stage 1-l I/p stage 2-h I/p stage 2-l Ign 1 + Inflatable restraint i/p module (above dash compartment) Inflatable restraint passenger airbag on/off indicator Inflatable restraint sensing/diagnostic module (sdm) (beneath lower console) Inflatable restraint steering wheel module (in steering column) Inflatable restraint steering wheel module coil (steering wheel) L asf + L asf sig L asf-h L asf-l L belt sw L efs + L efs sig L pretens-h L pretens-l Left front seat belt pretensioner (at left inner "b" pillar) Nca Passenger seat belt indicator Pnk Pos rtrn Pos sensor-h R asf + R asf sig R asf-h R asf-l R belt sw R efs + R efs sig R pretens-h R pretens-l Red Right front seat belt pretensioner (at right inner "b" pillar) Serial Shorting bar Stage 1 Stage 1-h Stage 1-l Stage 2 Stage 2-h Stage 2-l Tan Underhood fuse block (above left front wheel well) Supplemental Restraints Wiring Diagram (2 of 2) for Hummer H3 2007 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Hummer H3 2007: 44 (behind right front kick panel) body control module (in body harness) s323 (in body harness) s344 (left side of dash) data link connector (dlc) (mounted under left side of passenger seat) g310 (under center console) inflatable restraint vehicle rollover sensor Air bag ind C1 a42 C2 a38 C2 a39 Driver seat belt switch (open w/ seat belt buckled) G310 (mounted under left side of passenger seat) Gnd Ign Ign 1 + Ign 1+ Inflatable restraint front passenger presence system (pps) module (on underside of cushion) Inflatable restraint passenger presence system (pps) (in front passenger seat cushion) Instrument panel cluster Ipc class 2 serial data Left inflatable restraint front end sensor (lower left radiator support) Left inflatable restraint roof rail module (upper left "b" pillar) Left inflatable restraint seat position sensor Left inflatable restraint side impact sensor (sis) (in left front door) Logic Low ref Nca Off ind On ind Passenger seat belt buckle (open w/ seat belt buckled) Pnk Press sig Red Right inflatable restraint front end sensor (lower right radiator support) Right inflatable restraint roof rail module (upper right "b" pillar) Right inflatable restraint seat position sensor Right inflatable restraint side impact sensor (sis) (in right front door) S310 Seat belt ind Serial Shorting bar Tan Tension sig Volt ref
TRANSMISSION A/T Wiring Diagram for Hummer H3 2007 List of elements for A/T Wiring Diagram for Hummer H3 2007: 50 (top of brake pedal assembly) tcc brake/ cruise release switch 1-2 shift solenoid valve 2-3 shift solenoid valve 3-2 shift solenoid valve 5v ref Accelerator pedal position (app) sensor (on accelerator pedal bracket) App sens 1 sig App sens 2 sig Automatic transmission Automatic transmission fluid pressure manual valve position switch Automatic transmission fluid temperature sensor Cruise/misc fuse 35 10a Ect sens sig Engine coolant temperature (ect) sensor (front left of engine) G102 (on lower left side of engine block, rearward of g103) G105 (on left inner front wheel well, behind battery) Hot at all times Hot in run or start Input speed sensor Iss sig Low ref Nca Park/neutral position (pnp) switch (left side of automatic transmission) Pc vlv hi ctrl Pnk Powertrain control module (pcm) (at left front side of engine compt) Pressure control solenoid valve Prndl a Prndl b Prndl c Prndl p Red Release sig Rev Run/crank relay 78 S133 Sol vlv ctrl Sw sig a Sw sig b Sw sig c Tan Tft sens sig Torque converter clutch pulse width modulation solenoid valve Torque converter clutch solenoid valve Trans fuse 34 10a Underhood fuse block (above left front wheel well) Vehicle speed sensor (left rear of transfer case) Vlv low ctrl Vss hi Vss lo Transfer Case Wiring Diagram for Hummer H3 2007 List of elements for Transfer Case Wiring Diagram for Hummer H3 2007: 55 (on right inner front wheel well) g106 4 hi ind 4 hi lock ind 4 lo lock ind 4-hi ind 4-lo ind 4hi 4hi lock 4lo lock 4wd-lo sig 5v ref A encoder sig Accessory switch B encoder sig Bat Body control module (bcm) (behind right front kick panel) C encoder sig C1 a26 Computer data lines system Diff lock Diff lock hi Diff lock ind Diff lock lo Encoder Encoder lo ref Gnd Hot at all times Hvac relay 87 Instrument panel cluster (ipc) Logic Low sig Message center Motor Motor ctrl a Motor ctrl b Neu ind ctrl Neutral ind P encoder sig Pnk Powertrain control module (pcm) (at left front side of engine compt) Rear diff lock ind Rear differential lock actuator (mounted to center of rear axle) Red Red/ Serial data Service 4wd Sig hi Sig lo Switch sig Tccm fuse 12 30a Tccm switch fuse 58 10a Transfer case encoder motor (part of transfer case) Transfer case shift control module (behind glove box) Underhood fuse block (above left front wheel well) Vehicle speed sensor (left rear of transfer case)
WARNING SYSTEMS Warning Systems Wiring Diagram for Hummer H3 2007 List of elements for Warning Systems Wiring Diagram for Hummer H3 2007: 70 (approximately 42 cm (16.5 in) rearward of breakout to right seat belt pretensioner) s347 A10 A14 A26 A32 A38 A39 A42 A44 Accessory switch Auto Batt ign sw fuse 5 10a Bcm fuse 14 10a Body control module (bcm) (behind right front kick panel) Check tire pressure serivce tire monitor Chime Class 2 serial data Computer data lines system Driver buckle seat belt switch Driver door ajar switch (in lower left "b" pillar) Driver information center (dic) Endgate ajar switch (in right "d" pillar) G106 (on right inner front wheel well) G300 (under driver seat carpet, on floor board) G310 (mounted under left side of passenger seat) G320 (under rear of middle console carpet, on floor board) Headlamp switch Hot at all times Ign Ignition switch Inflatable restraint sensing & diagnostic module (sdm) (beneath lower console) Instrument panel cluster (ipc) Key-in switch Left front tire pressure monitor sensor (in left front tire) Left rear door ajar switch (in lower left "c" pillar) Left rear tire pressure monitor sensor (in left rear tire) Left seat belt sw Left seat belt switch Left turn ind Lf dr ajar sw sig Logic Low ref Lr dr ajar sw sig Lr turn sig lmps pwr Nca Off Off/run/crank voltage Park Passenger buckle seat belt switch Passenger door ajar switch (in lower right "b" pillar) Passenger seat belt ind Pk lmp sw sig Red Rf dr ajar sw sig Right front tire pressure monitor sensor (in right front tire) Right rear door ajar switch (in lower right "c" pillar) Right rear tire pressure monitor sensor (in right rear tire) Right seat belt sw Right turn ind Rr dr ajar sw sig Rr turn sig lmps pwr S205 S300 S310 S320 Seat belt ind Seat belt ind ctrl Solid state Tire pressure ind Underhood fuse block (above left front wheel well)
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Hummer H3 2007 List of elements for Front Wiper/Washer Wiring Diagram for Hummer H3 2007: 32 A/c clutch diode 90 A20 Body control module (behind right front kick panel) C201 Frt/wpr fuse 6 25a G105 (on left inner front wheel well, behind battery) G106 (on right inner front wheel well) Hi in Hi/low wpr relay Hot at all times Int Lo in Mist Nca Off On/off wpr relay Park out Rap relay coil control Rap/aacy relay 88 Red S/roof frt/wpr fuse 9 15a S143 S210 Turn signal/ multifunction switch Underhood fuse block (above left front wheel well) Windshield washer fluid pump (mounted on fluid reservoir) Windshield wiper motor (under center of front cowling) Windshield wiper/ washer switch Windshield/ washer pump control Windshield/ wiper motor park switch signal Windshield/ wiper switch signal 1 Windshield/ wiper switch signal 2 Rear Wiper/Washer Wiring Diagram for Hummer H3 2007 List of elements for Rear Wiper/Washer Wiring Diagram for Hummer H3 2007: 28 (center of endgate) rear window wiper motor Accy voltage Body control module (behind right front kick panel) G106 (on right inner front wheel well) G350 (behind left rear quarter trim, near wheel well) Ground Hot at all times Ill Interior lights system Logic Low Off Rap relay coil control Rap/accy relay 88 Rear window washer fluid pump (in right rear engine compt area) Rear window wiper/ washer switch Rear wpr switch/pump fuse 16 15a Rear/wpr mtr fuse 15 15a S205 S292 (in body harness right kick panel area, approximately 3 cm (1.2 in) rearward of breakout to bcm) S900 Underhood fuse block (above left front wheel well) Wash Washer switch signal Wiper control motor Wiper delay 1 signal Wiper delay 2 signal Wiper motor
