Разделы схем — 30 (всего 101)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION 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 WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 85 (diesel) (gasoline) 5v ref A/c comp cl rly ctrl A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay A/c low pressure switch (right side of accumulator) A/c on A/c recirc A/c ref pre sens sig A/c refrigerant pressure sensor (in a/c muffler hose assembly) A10 A11 A12 A5 c1 Amb air temp sig Ambient air temperature sensor (in right front bumper filler assembly Auto B c5 B(+) B10 B11 B12 Blower fuse 40a Blower motor Blower motor control processor (behind right side of dash) Blower speed ctrl C4 e C5 c1 Class 2 ser data Class 2 serial data Fan dn Fan up Frt def G104 (on left rear of engine block) G200 (behind right side of dash, near right "a" pillar) G203 (behind left side of dash, near left "a" pillar) Ground Hot at all times Hot in run Hot in run or start Hvac 1 fuse 10a Hvac control module (behind center of dash) Hvac/ ecas fuse 10a I/p relay block (left side of dash) Ign 3 Ign e fuse 10a Inside air temp sig Inside air temperature sensor assembly (in headliner above driver) Inst lamp dim ctrl Interior lights system Left i/p fuse block (lower left side of dash) Left temp control Lo lt air temp sig Lo press sens sig Lo rt air temp sig Logic Low ref Lower left air temperature sensor (in lower left floor duct assembly) Lower right air temperature sensor (bottom center of hvac box, in floor duct) Lt temp door ctrl Mode Mode door ctrl Off Powertrain control module or engine control module (left front of engine compt) Recir Recir door ctrl Recirc door po sig Red Right i/p fuse block (lower right side of dash) Right temp control Rt temp door ctrl S102 (in engine harness) S207 (in headliner harness) S218 (in i/p harn) Sp205 (in i/p harn) Speed ctrl Tan Temp sen ass ctrl Underhood fuse block (left side of engine compt, near battery) Up lt air temp sig Up rt air temp sig Upper left air temperature sensor (below dash trim panel, in upper duct) Upper right air temperature sensor (below dash trim panel, in upper duct) Automatic A/C Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 18 Ambient light sens lo ref Ambient light sens sig Ambient light sensor B12 Body control module (lower left side of dash, below steering column) Class 2 serial data Lefft sunload sensor sig Left air temperature actuator (top center of hvac control assembly) Left solar sensor Logic Mode actuator (left side of hvac module) Recirculation actuator (top center of hvac module) Right air temperature actuator (top center of hvac control assembly) Right i/p fuse block (lower right side of dash) Right solar sensor Right sunload sensor sig Sunload sensor (top center of dash) Tan Automatic A/C Wiring Diagram, Rear A/C for Chevrolet Avalanche 2003 1500 List of elements for Automatic A/C Wiring Diagram, Rear A/C for Chevrolet Avalanche 2003 1500: 58 (except luxury) (luxury) (in i/p harness) 5v ref A10 Air temp door ctrl Air temp door sig Auxiliary air temperature actuator (near top center of rear hvac module assembly) Auxiliary blower motor control processor (behind right rear quarterpanel, below aux blower motor) Auxiliary hvac control module (mounted to top of aux hvac assemblly) Auxiliary mode actuator (behind right rear quarter trim panel, at front of aux hvac module) B(+) Blower control Blower motor Blower mt sp ctrl Class 2 ser data Class 2 serial data Computer data lines system Except luxury Front auxiliary hvac control assembly Ft air temp sw sig Ft blow mt sw ctrl Ft blower mt sw sig Ft mode sw sig G200 (behind right side of dash, near right "a" pillar) G203 (benind left side of dash, near left "a" pillar) G410 (behind right rear quarterpanel) Gnd Ground Hot at all times Hot in run I/p relay block (lower left side of dash) Ign 3 fuse 10a In air temp sen sig Inside air temp ctrl Inside auxiliary air temperature sensor assembly (in headliner, near left "c" pillar) Interior lights system Left i/p fuse block (lower left side of dash) Lo air temp sen sig Logic Low ref Lower auxiliary air temperature sensor (behind right "c" pillar, front of hvac) Luxury Mode door sig Panel lp dim ctrl Power distribution system Radio fuse 10a Rear seat audio control module Rr ecc fuse 10a Rr hvac fuse 30a S207 (in headliner harness) S210 S330 s333 (in console harness) Speed ctrl Tan Temp control Underhood fuse block (left side of engine compt, near battery) Up air temp sen sig Upper auxiliary air temperature sensor (in rear auxiliary hvac upper duct, near "c" pillar) Compressor Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Compressor Wiring Diagram for Chevrolet Avalanche 2003 1500: 26 (diesel) (gasoline) 5v ref A/c comp cl rly ctrl A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay A/c low pressure switch (right side of accumulator) A/c on switch A/c ref pre sens sig A/c refrigerant pressure sensor (in a/c muffler hose assembly) A12 B11 Class 2 ser data Class 2 serial data G104 (on left rear of engine compt) Hot at all times Hot in run or start Hvac control module (behind center of dash) Ign e fuse 10a Lo press sens sig Logic Low ref Powertrain control module or engine control module (left front of engine compt) Sp205 (in i/p harn) Underhood fuse block (left side of engine compt, near battery) Manual A/C Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Manual A/C Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 67 (diesel) (gasoline) 5v ref 87a A/c comp cl rly ctrl A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay A/c low pressure switch (right side of accumulator) A/c on switch A/c recirc A/c ref pre sens sig A/c refrigerant pressure sensor (in a/c muffler hose assembly) A10 A11 A12 A5 c1 B c5 B(+) B10 B11 B12 Blower fuse 40a Blower motor (under right side of dash) Blower motor control switch Blower motor relay Blower motor resistor assembly (on hvac module, near blower motor) Class 2 ser data Class 2 serial data Frt def G104 (on left rear of engine block) G200 (behind right side of dash, near right "a" pillar) G203 (behind left side of dash, near left "a" pillar) Ground Hot at all times Hot in run Hot in run or start Htr a/c fuse 30a Hvac 1 fuse 10a Hvac control module (behind center of dash) Hvac/ ecas fuse 10a I/p relay block (left side of dash) Ign 3 Ign e fuse 10a Inst lamp dim ctrl Interior lights system Left i/p fuse block (lower left side of dash) Left temp control Lo press sens sig Logic Low ref Lt temp door ctrl Mode control Mode door ctrl Off Off blow mt ctrl Powertrain control module or engine control module (left front of engine compt) Recir door ctrl Recirc switch Red Right i/p fuse block (lower right side of dash) Right temp control Rt temp door ctrl S102 (in engine harness) Sp205 (in i/p harn) Tan Underhood fuse block (left side of engine compt, near battery) Manual A/C Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Manual A/C Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 15 (not used) Ambient light sens lo ref Ambient light sens sig Ambient light sensor (top center of dash) B12 Body control module (lower left side of dash, below steering column) Class 2 serial data G200 (behind right side of dash, near "a" pillar) Left air temperature actuator (top center of hvac control assembly) Logic Mode actuator (left side of hvac module) Recirculation actuator (top center of hvac module) Right air temperature actuator (top center of hvac control assembly) Right i/p fuse block (lower right side of dash) Tan Manual A/C Wiring Diagram, Rear with A/C only for Chevrolet Avalanche 2003 1500 List of elements for Manual A/C Wiring Diagram, Rear with A/C only for Chevrolet Avalanche 2003 1500: 24 (mounted to aux hvac box, below blower motor) auxiliary blower motor resistor assembly A10 Auxiliary blower motor (behind right rear quarterpanel) Auxiliary heater blower motor resistor Auxiliary high speed blower motor relay Auxiliary low speed blower motor relay Auxiliary med speed blower motor relay Fan com Front auxiliary hvac control assembly G401 (behind right rear quarterpanel) High Hot at all times Hot in run Ign 3 fuse 10a Interior lights system Left i/p fuse block (left side of dash) Low Med Off Rear auxiliary hvac control assembly Rear ctrl Red Rr hvac fuse 30a Underhood fuse block (left side of engine compt, near battery) Manual A/C Wiring Diagram, Rear with Heat & A/C for Chevrolet Avalanche 2003 1500 List of elements for Manual A/C Wiring Diagram, Rear with Heat & A/C for Chevrolet Avalanche 2003 1500: 42 (mounted to aux hvac box, below blower motor) auxiliary blower motor resistor assembly A10 Aux air temp ddor ctrl Aux front mode 1 sig Aux mode door ctrl Aux rear air temp 2 sig Aux rear mode 2 sig Auxiliary blower motor (behind right rear quarterpanel) Auxiliary heater blower motor resistor Auxiliary high speed blower motor relay Auxiliary hvac control processor (mounted on top of aux hvac assembly) Auxiliary low speed blower motor relay Auxiliary med speed blower motor relay Auxiliary mode actuator (behind right rear quarter trim panel, at front of aux hvac module) Auxiliary temperature actuator (near top center of rear hvac module assembly) Fan com Front auxiliary hvac control assembly Ft mode sig Ft temp sig G410 Ground High Hot at all times Hot in run Ign 3 fuse 10a Ign 3 voltage Ign volt Interior lights system Left i/p fuse block (left side of dash) Logic Low Med Off Rear auxiliary hvac control assembly Rear ctrl Rear enable ctrl Rear mode sig Rear temp sig Red Rr hvac fuse 30a Sp410 (behind right rear quarterpanel) Underhood fuse block (left side of engine compt, near battery)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhacement Stability (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhacement Stability (1 of 2) for Chevrolet Avalanche 2003 1500: 62 (on left side of A c9 Abs fuse 60a Abs/tcs class 2 serial data B c9 Battry (+) Brake fluid level sensor sig Brake fuse 10a Brake in C12 C5 c1 Control module (ebcm) Del torque Delivered torque signal Electronic brake G110 (on left front body mount) Gnd Hot at all times Hot in run Ignition 3 volt Inner frame) Lateral accelerometer sig Left front wheel speed sensor Left i/p fuse block (behind lower left side of dash) Left rear wheel speed sensor Lf wss sig Lf wss sig lo ref Lr wss sig Lr wss sig lo ref Nca Powertrain control module (pcm) (on left front side of eng compt) Precharge motor hi Precharge motor lo Precharge pump Red Req torque Request torqe signal Rf wss sig lo ref Right front wheel speed sensor Right rear wheel speed sensor Rr wss sig Rr wss sig lo ref S313 Steering wheel pos marker pulse sig Steering wheel pos sig a Steering wheel pos sig b Stoplamp switch (on top of brake pedal bracket) Tan Tcc brake sw/cruise ctrl sig Traction ctrl pref sw sig Underhood fuse block (at left side of eng compt, near battery) Vehicle speed sensor (vss) (on rear of transmission) Vehicle speed sig Vses fuse 60a Vses motor Vss high Vss low Vss output Yaw rate frequency Yaw rate sensor 5v ref Yaw rate sensor lo ref Yaw rate sensor sig Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhacement Stability (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhacement Stability (2 of 2) for Chevrolet Avalanche 2003 1500: 54 (in steering column harn) 5v ref Abs ind Anti-theft system B11 B11 c2 B5 c1 B7 c2 Battery (+) Body control module (on lower left side of dash, below steering column) Brake fluid level switch (on left side of brake fluid reservoir) Brake pressure differential switch (below master cylinder) C1 c4 C1 c5 C2 b7 C3 b7 Connector (dlc) (below steering column) Cruise fuse 10a Data link Except 8s8 G104 (left rear of engine block) G203 (near left "a" pillar) Ground Hot in run Hot in run or start I/p relay block (below i/p, left of steering column) Ign e fuse 10a Instrument panel cluster Interior lights system Left i/p fuse block (on lower left side of dash) Lo ref Logic Pnk S102 S106 S212 (in i/p harn) S213 S240 S241 Sensor self test sig ckt Seo ign fuse 10a Splice pack sp205 (in i/p harn) Steering wheel pos marker pulse sig Steering wheel position sens sig Steering wheel position sig a Steering wheel position sig b Steering wheel speed/ position sensor (near base of steering column) Theft deterrent control module Traction control switch Transfer case shift control module Underhood fuse block (at left side of eng compt, near battery) W/ 8s8 Yaw & lateral acceleration sensor (under right front seat) Yaw rate frequency Anti-lock Brakes Wiring Diagram, without Vehicle Speed Enhacement Stability for Chevrolet Avalanche 2003 1500 List of elements for Anti-lock Brakes Wiring Diagram, without Vehicle Speed Enhacement Stability for Chevrolet Avalanche 2003 1500: 63 (not used) 1500: brake press sens sig 2500: brake fluid level sw Abs fuse 60a Anti-lock ind Brake fluid level switch (2500 series) (on left side of brake fluid reservoir) Brake fuse 10a Brake ind Brake pressure differential switch (1500 series) (below master cylinder) C12 C2 b7 C5 c1 C8 a Data link connector (dlc) (under left side of dash, below steering column) Del torque Delivered torque Electronic brake control module (ebcm) (on left side of inner frame) Except seo G104 (left rear of engine block) G110 (left front body mount) G203 (near left "a" pillar) Hot at all times Hot in run Hot in run or start Ign e fuse 10a Ignition 3 voltage Illum lamp Instrument cluster Interior lights system Left front sensor (+) Left front sensor (-) Left front wheel speed sensor Left i/p fuse block (behind lower left side of dash) Logic Nca Pnk Powertrain or engine control module (pcm or ecm) (at left front of eng compt) Red Req torque Requested torque Right front sensor (+) Right front sensor (-) Right front wheel speed sensor S102 S213 Seo Seo ign fuse 10a Serial data Splice pack sp205 (behind left i/p fuse block) Stoplamp switch (on top of brake pedal bracket) Tan Tcc brake sw Tcc brake switch Trac ctrl sw sig Traction control switch Transfer case shift control module Underhood fuse block (at left side of eng compt, near battery) Underhood fuse block (at left side of engine compt, near battery) Vehicle speed sensor (vss) (on rear of transmission) Vss high Vss input Vss low Vss out Supplemental Brake Assist Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Supplemental Brake Assist Wiring Diagram for Chevrolet Avalanche 2003 1500: 18 C1 f5 C5 c1 Engine on signal G200 (behind right side of dash, near right "a" pillar) G203 (near left "a" pillar) Generator Grd Hot in run or start I/p relay block (near left kick panel) Ign 1 volt Instrument cluster system Pnk Pressure differential switch S202 Sba fuse 15a Underhood fuse block (at left side of engine compt) Vacuum pump motor Vehicle spd sig
ANTI-THEFT Forced Entry Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Forced Entry Wiring Diagram for Chevrolet Avalanche 2003 1500: 57 (behind left front door trim panel, near handle) (behind right front door trim, near handle) (in liftgate harness) s910 (on lower left side of dash, below steering column) A12 Ajar sw B12 Body control module Body relay block Cargo door key switch Cargo/liftgate D12 Door ajar sw Door sw lo ref Door sw sig Driver door module Driver mini-wedge door jamb switch Ex lights ctrl Exterior lights system Front passenger door module Front passenger mini-wedge door jamb switch G203 (near left "a" pillar) G305 (on left "b" pillar) G306 (on right "b" pillar) G410 (behind right rear quarterpanel) Ground Headlights ctrl Headlights system Horn rly ctrl Horns system Hot at all times Key sw Key sw lo ref Key sw sig Left door contact plate (body) Left i/p fuse block Left liftgate ajar switch Left rear mini-wedge door jamb switch Liftgate key switch Liftglass ajar switch Right cargo door ajar switch Right door contact plate (body) Right door contact plate (door) Right i/p fuse block Right liftgate ajar switch Right rear mini-wedge door jamb switch S911 Serial data Splice pack sp205 Splice pack sp410 Tan Tbc batt fuse 10a Underhood fuse block W/ cargo doors W/ liftgate W/cargo doors Window wiper module (in liftgate, below rear glass) Passlock Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Passlock Wiring Diagram for Chevrolet Avalanche 2003 1500: 32 A11 A12 B12 Battery Body control module (lower left side of dash below steering column) Connector (below steering column) D12 Data Data link G203 (under left side of dash) Ground Hot at all times Hot in run & start I/p relay block (under left side of dash) Ign pwr Instrument panel cluster Key Lock cylinder Magnet Passlock sensor (internal to steering column) Pnk Powertrain control module (on left front of engine compt) Security sensor Sensor pwr Sensor ref Sensor sig Serial data Splice pack sp205 (behind left i/p fuse block) Tamper sensor Tbc batt fuse 10a Tbc ign 1 fuse 10a Underhood fuse block
BODY CONTROL MODULES Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 72 12 volt ref A10 A11 A12 Ambiennt light sens sig Ambient light sensor Ambient light sensor (top center of dash) Anti-lock brakes system Anti-theft system B10 B11 B12 Battery + Body control module (on lower left side of dash, below steering column) Body relay block Class 2 serial data Computer data lines system Defogger system Dimming input/courtesy lmp pwm Dimming potentiometer 5volt ref Door locks system Driver sunload sens sig Drl off ind Drl relay ctrl Drl sw sig E11 E12 Exterior lights system F0og light relay ctrl F10 Front fog lamp sw sig G203 (near left "a" pillar) Ground Headlamp high beam relay ctrl Headlamp low beam relay ctrl Headlights system Horn rly ctrl Horns system Hot at all times I/p lamp dinning ctrl Interior lamp defeat sw sig Interior lights system L solar sensor Led dimming sig Left i/p fuse block Low ref Park lamp relay ctrl Park lamp sw on sig Pass door lock sw lock ctrl Pass door lock sw unlock ctrl Passenger sunload sens sig Pnk Power distribution system Power tops system R solar sensor Rear defog rly ctrl Red Remote radio ctrl sig S217 Securityn system sens sig Sound system Steering wheel position sen sig Sunload sensor (on center of dash, near defrost deflectors) Tan Tbc 2a fuse 15a Tbc 2c fuse 15a Tbc batt fuse 10a Tow/haul sw sig Tow/haul switch Underhood fuse block W/ automatic a/c W/ manual a/c Body Control Modules Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 47 A10 A11 Accessory volt B10 B11 B12 Backup lamp sig Battery + Body control module (on lower left side of dash, below steering column) Cargo lamp low ctrl Courtesy lamps on sig Exterior lights system Headlamp sw flash to pass sig Headlamp sw headlamp on sig Headlights system Hot at all times Hot in run & acc Hot in run & start Hot in run, start & acc I/p lamps dimmer sw low ref Ignition 0 volt Ignition 1 volt Interior lights system Key in ignition sw sig Left i/p fuse block Left rear door ajar sw sig Lift gate ajar sw sig Low ref Navigation system Park brake sw sig Park brake switch (part of park brake assembly) Pnk Power window lockout lr sig Power window lockout rr sig Power window sw lr down sig Power window sw lr up sig Power window sw rr down sig Power window sw rr up sig Power windows system Rear parking assist chime sig Right rear door ajar sw sig Tbc 2b fuse 15a Tbc accy fuse 10a Tbc ign 0 fuse 10a Tbc ign 1 fuse 10a Underhod fuse block Warnings system
COMPUTER DATA LINES Computer Data Lines Wiring Diagram, Base & Up-Level for Chevrolet Avalanche 2003 1500 List of elements for Computer Data Lines Wiring Diagram, Base & Up-Level for Chevrolet Avalanche 2003 1500: 42 (not used) B11 B12 Body control module (on lower left side of dash, below steering column) Cig ltr fuse 15a Data link connector (dlc) (under left side of dash, below steering column) Digital radio receiver (behind center of dash) Drive door module (ddm) (in left front door) Electronic brake control module (ebcm) (left rear frame rail) Electronic suspension control module (behind right "c" pillar trim panel) Front passenger door module (fpdm) (in right front door) G200 (near right "a" pillar) G203 (near left "a" pillar) Ground distribution system Hot at all times Hvac control module (auxiliary) (mounted at top of auxiliary hvac assembly) Hvac control module (behind center of dash) I/p relay block (under left side of dash, near kick panel) Inflatable restraint sensing & diagnostic module (under left front seat) Instrument panel cluster (ipc) Left i/p fuse block (under left side of dash) Memory seat module (under side of driver seat) Pnk Power distribution system Powertrain control module (pcm) (on left front of engine compt) Radio (at center of dash) Rear seat audio (rsa) controller (under rear of center console) Rear seat entertainment (rse) assembly (at center of headliner) Rear wheel steering control module (at left rear of vehicle, near spare tire bracket) Remote playback device-cd player (at center of dash, below radio) Right i/p fuse block (under right side of dash) S202 Sp205 (left side of dash) Sp206 (left side of dash) Sp207 (left side of dash) Tan Theft deterrent module (at center of dash, below radio) Transfer case shift control module (behind headlamp switch) Underhood fuse block (at left side of engine compt, near battery) Vehicle communication interface module (vcim) (behind passenger air bag module) W/ active handling W/o active handling Computer Data Lines Wiring Diagram, Luxury for Chevrolet Avalanche 2003 1500 List of elements for Computer Data Lines Wiring Diagram, Luxury for Chevrolet Avalanche 2003 1500: 45 (not used) Audio amplifier (under rear of center console) B10 B11 B12 Body control module (on lower left side of dash, below steering column) Cig ltr fuse 15a Data link connector (dlc) (under left side of dash, below steering column) Digital radio receiver (behind center of dash) Drive door module (ddm) (in left front door) Electronic brake control module (ebcm) (left rear frame rail) Electronic suspension control module (behind right "c" pillar trim panel) Front passenger door module (fpdm) (in right front door) G200 (near right "a" pillar) G203 (near left "a" pillar) Ground distribution system Hot at all times Hvac control module (auxiliary) (mounted at top of auxiliary hvac assembly) Hvac control module (behind center of dash) I/p relay block (under left side of dash, near kick panel) Inflatable restraint sensing & diagnostic module (under left front seat) Instrument panel cluster (ipc) Left i/p fuse block (under left side of dash) Memory seat module (under side of driver seat) Pnk Power distribution system Powertrain control module (pcm) (on left front of engine compt) Radio (at center of dash) Rear seat audio (rsa) controller (under rear of center console) Rear seat entertainment (rse) assembly (at center of headliner) Rear wheel steering control module (at left rear of vehicle, near spare tire bracket) Remote playback device-cd player (at center of dash, below radio) Right i/p fuse block (under right side of dash) S202 Sp205 (left side of dash) Sp206 (left side of dash) Sp207 (left side of dash) Tan Theft deterrent module (at center of dash, below radio) Transfer case shift control module (behind headlamp switch) Underhood fuse block (at left side of engine compt, near battery) Vehicle communication interface module (vcim) (behind passenger air bag module) W/ active handling W/o active handling W/y91
CRUISE CONTROL Cruise Control Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Cruise Control Wiring Diagram for Chevrolet Avalanche 2003 1500: 54 (not used) 5v ref A10 Acceleration pedal position sensor (behind accelerator pedal) App sensor 1 sig App sensor 2 sig Class 2 data Computer data lines system Cruise control on/off switch Cruise fuse 10a Cruise ind Cruise on sw sig Etc/ecm fuse 15a F12 G104 (left rear of engine) Ground Hot at all times Hot in run Hot in run & start Ign Ign volt Instrument panel cluster Left i/p fuse block (on lower left side of dash) Low ref Nca Off Pnk Powertrain control module (left front of engine compt) Resume/ accel Resume/accel Resume/accel sig S102 S240 Serial data Set/ coast Set/coast sig Stop lps fuse 20a Stoplamp switch (top of brake pedal) Tac motor cntrl 1 Tac motor cntrl 2 Tan Throttle actuator control module (right rear of engine compt) Throttle body Tp sensor 1 sig Tp sensor 2 sig Turn signal multifunction switch Under- hood fuse block Underhood fuse block (near battery) Veh stop fuse 15a Vehicle speed sensor (vss) (on rear of transmission) Vss high Vss low W/ electronic adjustable pedal W/o electronic adjustable pedal
DEFOGGERS Heated Mirrors Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Heated Mirrors Wiring Diagram for Chevrolet Avalanche 2003 1500: 24 A7 c1 B11 Battery Computer data lines system Ddm fuse 15a Driver door module (ddm) (below driver door switch panel) Driver outside rearview mirror F c3 Front passenger door module (fpdm) (below front passenger door switch panel) G200 (near right "a" pillar) Ground Ground distribution system Hot at all times Hvac control module Left i/p block fuse block (under left side of dash) Left i/p fuse block (under left side of dash) Low ref Passenger outside rearview mirror Pdm fuse 10a R def Right i/p fuse block (under right side of dash) S202 Serial data Tan Rear Defogger Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Rear Defogger Wiring Diagram for Chevrolet Avalanche 2003 1500: 41 (behind right rear quarterpanel) A c1 A c2 A6 c1 Avalache/ escalade ext B c1 B11 B12 Body control module (below left side of dash) C1 a C1 d C2 a Computer data lines system D c1 G306 (right "b" pillar) G410 Hot at all times Hot in run & start Htr Hvac control module (behind center of dash) I/p relay block (below left side of dash) Ign L c10 Left cargo door contact plate (body) Left cargo door contact plate (door) Left cargo rear window defogger grid Liftgate defogger grid Logic Rear defogger relay Rear window defogger grid Relay cntrl Right cargo door contact plate (body) Right cargo door contact plate (door) Right cargo rear window defogger grid S319 S901 (in liftgate harness) Serial data Splice pack sp410 W/cargo doors W/liftgate Window contactor
ELECTRONIC POWER STEERING Rear Wheel Steering Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Rear Wheel Steering Wiring Diagram for Chevrolet Avalanche 2003 1500: 68 12v ref 2ws ind ctrl 4ws fuse 15a 4ws ind ctrl 5 volt ref 5v ref B+ volt B11 Base Body control module (on lower left side of dash, below steering column) C1 b5 C1 c5 Case gnd Case ground Combination yaw rate sensor/lateral accelerometer sensor (under front passenger seat) Computer data lines system Cruise fuse 10a D12 G101 G203 (near left "a" pillar) Gnd Hall a sig Hall b sig Hall c sig Hot at all times Hot in run I/p relay block (lower left side of dash) Ign 3 fuse 10a Ign 3 volt Instrument cluster system Interior lights system Lat accel sig Left i/p fuse block Low ref Mega fuse 125a Mode ind ctrl Mode sw sig Phase a ctrl Phase b ctrl Phase c ctrl Pnk Pos 1 sig Pos 2 sig Pos a sig Pos b sig Power distribution system Pulse sig Rear wheel position sensor (left rear of vehicle) Rear wheel steering control module (near spare tire bracket) Rear wheel steering mode select switch Red Rly gnd Rly volt S212 (in i/p harness) S240 (in steering pnk column harness) S241 (in steering column harness) Sens gnd Sens ref Sens sig Serial data Steering gear motor assembly (near spare tire bracket) Steering wheel speed/ position sensor (on steering column) Tan Tan c Underhood fuse block Underhood fuse holder Vss Yaw sens sig
ELECTRONIC SUSPENSION Electronic Suspension Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Electronic Suspension Wiring Diagram for Chevrolet Avalanche 2003 1500: 68 (near base of steering column) steering wheel speed/ position sensor 5 volt ref A10 A11 A12 All others Automatic level control (alc) compressor relay (near underhood fuse block) B10 B11 B12 Batt+ Battery voltage Compressor motor Compressor/ leveling module Computer data lines system Cruise fuse 10a Data lines Electronic suspension control module (behind right "c" pillar trim panel) Esclade ext Except esclade ext Exhaust sol G203 (near left "a" pillar) G304 (under right front seat) G306 (on right "b" pillar) G401 (on left rear body mount) G410 (behind right rear quarterpanel) Ground Hot at all times Hot in run Ign 3 fuse 10a Ignition 3 Left front suspension damper solenoid Left front suspension position sensor (on control arm, behind left front shock) Left i/p fuse block (behind lower left side of dash) Left rear suspension damper solenoid Left rear suspension position sensor (behind left rear shock, near frame rail) Lf damp servo Lf strut pos Lift/dive signal Lr damp servo Lr strut pos Pnk Powertrain control module (pcm) (at left front of engine compt) Pressure sensor Red Relay control Rf damp servo Rf strut pos Right front suspension damper solenoid Right front suspension position sensor (on control arm, behind right front shock) Right rear suspension damper solenoid Right rear suspension position sensor (behind right rear shock, near frame rail) Rr damp servo Rr strut pos Rtd fuse 30a S112 S240 S308 Sensor signal Solenoid control Splice pack sp410 Steering marker sig Steering post sig a Steering post sig b Stud 1 fuse 40a Tan Underhood fuse block (at left side of engine compt, near battery) With y91, except esclade ext
ENGINE PERFORMANCE
5.3L VIN T 5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Avalanche 2003 1500: 67 (below steering column) data link connector (lower right rear of engine) crankshaft position (ckp) sensor +5v 3-2 ss ctrl A/c system Anti-lock brakes sys Body control module (below steering column) Brk sw sig C10 Ckp sig Cls 2 data Cmp sig Cpp sw sig D10 E10 E11 Ect sig Electronic suspension system Fuel comp sig G103 (right rear of engine) Gnd Ho2s hi sig Ho2s lo Hot at all times Hot in accy, run & start Hot in run & start Ign Ign 0 fuse 10a Inj 1 ctrl Inj 2 ctrl Inj 3 ctrl Inj 4 ctrl Inj 5 ctrl Inj 6 ctrl Inj 7 ctrl Inj 8 ctrl Inj1 fuse 15a Inj2 fuse 15a Injectors Ks signal Left i/p fuse block Lev sw sig Lift/dive sig O2a fuse 15a O2b fuse 15a Oil lev sw sig Pcmb fuse 20a Pnk Pnk a Powertrain control module (left front of engine compt) Prnd a sig Prnd b sig Prnd p sig Range b Range c Red Ref low Ref low (a/t) Req torq sig Rly ctrl S103 S110 Serial data Sp205 (in i/p harness) Starting/ charging system Tan Under- hood fuse block 5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Avalanche 2003 1500: 36 (4l60) (4l80) (dual tanks) (in secondary fuel tank) fuel pump & sender assembly (secondary) (left rear of engine) g104 (not used) (right rear of engine) Coolant level switch (in coolant reservoir) Engine coolant temperature sensor (front of left cylinder head) Engine oil level switch (right side of oil pan) Fuel pump & sender assembly (primary) (in fuel tank) Fuel pump relay Fuel pump relay (secondary) (dual tanks) (on underhood fuse block bracket) G103 G103 (right rear of engine) G104 (left rear of engine) G110 (left front body mount) Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter) Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter) Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter) Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter) Hot at all times Hot in run & start Knock sensor (under intake manifold) Nca Park/neutral position switch (left side of transmission) Pcm b fuse 20a Pcm1 fuse 15a Pnk Red S102 S103 S312 Tan Under- hood fuse block Underhood fuse block 5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Avalanche 2003 1500: 39 (4l60e) (4l60e) s 1-2 sol 2-3 sol 3-2 sol A red A/t fluid pressure manual valve position switch Automatic transaxle Brake fuse 10a C12 Camshaft position sensor (top center rear of engine) Engine oil pressure (eop) sensor (top rear of engine) Evaporative emissions (evap) canister purge solenoid (behind throttle body) Evaporative emissions canister vent solenoid (right front side of fuel tank) F12 Fuel tank pressure sensor (in fuel tank) Hot at all times Hot in run Instrument cluster system Left i/p fuse block Manifold absolute pressure sensor (top rear of engine) N pnk P red Pc sol valve Pnk Pnk a Red Red/ Rev S150 Stop lps fuse 20a Stop- lamp switch (top of brake pedal bracket) Tan Tcc pwm sol Tcc sol Tft sensor Under- hood fuse block Underhood fuse block Vehicle speed sensor (rear of transmission/ transfer case) 5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Avalanche 2003 1500: 43 (behind accelerator pedal) accelerator pedal position sensor (in transmission) (4l80e) automatic transmission input shaft speed sensor 4ws fuse 15a A10 Act cntrl App sens 1 App sens 2 Cruise control system Cruise req Data E11 Ect/ecm fuse 15a Fuel composition sensor (flex fuel) G103 (right rear of engine) G104 (left rear of engine) Gnd Ground Hot at all times Hot in run & start Hot in run or start Iat sensor Ign Ign0 fuse 10a Intake air temperature (iat)/ mass airflow (maf) sensor (in air induction tube) Left i/p fuse block Not used Pnk R/a input Red Ref low S/c input S102 S103 Signal Stp lp in Tac ctrl Tan Throttle actuator control module (rear of engine compt) Throttle body Tp sens 1 Tp sens 2 Underhood fuse block Veh stop fuse 15a 5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Avalanche 2003 1500: 85 (in ignition coil jumper harness) (in injector jumper harness) (left rear of engine) g104 (left side of engine) g102 1-2 ss ctrl 2-3 ss ctrl 4wd low sig A/c system A12 Air conditioning system Anti-lock brakes system At iss high sig At iss low sig Axle sw sig B10 B11 Clu rly ctrl Crank fuse 10a Crank volt Css sig Ctrl Cycle sig Delivered torq Evap canp ctrl Evap vent ctrl Exc seo Fuel lev sens Fuel lev sig Fuel press sig G103 (right rear of engine) Gnd Ho2s htr low Ho2s low ctrl Hot at all times Hot in run & start Hot in start Iat sig Ign Ign ctrl Ign feed Ignition coils Ind ctrl Instrument cluster system Instrument panel cluster Ipc/dic fuse 10a Logic Maf sig Malfunction indicator lamp Map sig Mil ctrl Nca Nca nca Pc sol hi ctrl Pc sol lo ctrl Pcm1 fuse 15a Pmp rly ctrl Pnk Pnk d Powertrain control module (left front of engine compt) Press sens sig Prnd c sig Red Red c Ref lo Ref low Rpm out S103 S151 S152 S153 S154 S157 Seo Seo b1 fuse 15a Spark plug Starting/charging system Tan Tcc pwm ctrl Tcc sol ctrl Tft sens sig Transmissions system Underhood fuse block Vss high sig Vss low sig Vss out
8.1L VIN G 8.1L VIN G, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Avalanche 2003 1500: 66 (below steering column) data link connector (in injector jumper harness) (top left rear of engine) crankshaft position (ckp) sensor +5v A/c system Antilock brakes sys Body control module (below steering column) Brk sw sig C10 C12 Ckp sig Cls 2 data Cmp sig Cpp sw sig Css sig E11 Ect sig Egr pos sig G103 (right rear of engine) Gnd Ho2s hi sig Ho2s lo Hot at all times Hot in accy, run & start Hot in run & start Ign Ign 0 fuse 10a Inj 1 ctrl Inj 2 ctrl Inj 3 ctrl Inj 4 ctrl Inj 5 ctrl Inj 6 ctrl Inj 7 ctrl Inj 8 ctrl Inj1 fuse 15a Inj2 fuse 15a Injectors Ks signal Left i/p fuse block Lev sw sig O2a fuse 15a O2b fuse 15a Oil lev sw sig P/n sig Pcmb fuse 20a Pnk Pnk a Powertrain control module (pcm) (left front of engine compt) Pto enable sw Pto eng kill Pto engage Pto status Ref low Req torq sig Rly ctrl S103 S110 S152 S154 Serial data Sp205 (in i/p harness) Starting/ charging system Tan Transmissions system Under- hood fuse block 8.1L VIN G, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Avalanche 2003 1500: 33 (dual tanks) (in secondary fuel tank) fuel pump & sender assembly (secondary) (left rear of engine) g104 (right rear of engine) Coolant level switch (in coolant reservoir) Engine coolant temperature sensor (middle of right cylinder head) Engine oil level switch (right side of oil pan) Fuel pump & sender assembly- primary (in fuel tank) Fuel pump relay Fuel pump relay secondary (dual tanks) (on underhood fuse block bracket) G103 G103 (right rear of engine) G104 (left rear of engine) G110 (left front body mount) Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter) Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter) Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter) Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter) Hot at all times Hot in run & start Knock sensor bank 1 (forward of oil filter) Knock sensor bank 2 (forward of starter) Nca Park/neutral position switch (left side of transmission) Pcm b fuse 20a Pcm1 fuse 15a Pnk S102 S103 S150 S312 Tan Underhood fuse block 8.1L VIN G, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Avalanche 2003 1500: 41 (in engine harness) s163 (in i/p harness) (right "a" pillar) g200 Body relay block Brake fuse 10a C12 Camshaft position sensor (left side of timing cover) Cruise control system Cruise fuse 10a Engine oil pressure (eop) sensor (top rear of engine) Evaporative emissions (evap) canister purge solenoid (left side of throttle body) Evaporative emissions canister vent solenoid (right front side of fuel tank) Exhaust gas recirculation (egr) valve (top rear center of engine) F12 Fog lp fuse 15a Fuel tank pressure sensor (in fuel tank) Hot at all times Hot in run Ind logic Instrument cluster system Interior lights system Left i/p fuse block Manifold absolute pressure sensor (top rear of engine) Off Pnk Pnk a Power take off relay (underhood fuse block bracket) Power take off switch Red Red e S150 S161 S164 S205 Set Stop lps fuse 20a Stop- lamp switch (top of brake pedal bracket) Tan Transmissions system Under- hood fuse block Vehicle speed sensor (left rear of transmission/ transfer case) 8.1L VIN G, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Avalanche 2003 1500: 39 (behind accelerator pedal) accelerator pedal position sensor 4ws fuse 15a A10 Act cntrl App sens 1 App sens 2 Cruise control system Cruise req Data Ect/ecm fuse 15a G103 (right rear of engine) G104 (left rear of engine) Gnd Ground Hot at all times Hot in run or start Iat sensor Ign Intake air temperature (iat)/ mass airflow (maf) sensor (in air induction tube) Left i/p fuse block Not used Pnk R/a input Red Red pnk Ref low S/c input S102 S103 Signal Stp lp in Tac ctrl Tan Throttle actuator control module (left rear of engine compt) Throttle body Tp sens 1 Tp sens 2 Underhood fuse block Veh stop fuse 15a 8.1L VIN G, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Avalanche 2003 1500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Avalanche 2003 1500: 79 (in engine harness) (in ignition coil jumper harness) (in injector jumper harness) (left side of engine) g102 400 (or 821) 4wd low sig A/c system A/t Air conditioning system Anti-lock brakes system Axle sw sig B10 B11 Clu rly ctrl Crank fuse 10a Crank volt Ctrl Delivered torq Egr sol ctrl Egr sply volt Evap canp ctrl Evap vent ctrl Exc seo Fuel lev sens Fuel lev sig Fuel press sig G103 (right rear of engine) Gnd Ho2s htr low Ho2s low ctrl Hot at all times Hot in run & start Hot in start Iat sig Ign Ign ctrl Ign feed Ignition coils Ind ctrl Instrument cluster system Instrument panel cluster Ipc/dic fuse 10a Logic M/t Maf sig Malfunction indicator lamp Map sig Mil ctrl Mil request Nca Nca nca Pcm1 fuse 15a Pmp rly ctrl Pnk Pnk d Powertrain control module (pcm) (left front of engine compt) Press sens sig Red Red c Ref lo Ref low Rpm out S103 S151 S153 S154 S157 S159 Seo Seo b1 fuse 15a Spark plug Starting/charging system Tan Torque sig Transmissions system Underhood fuse block Vss high sig Vss low sig Vss out
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Back-up Lamps Wiring Diagram for Chevrolet Avalanche 2003 1500: 19 (below left side of dash) i/p relay block (w/ rear parking assist) A11 B/u lmp vlt B/u lmps sig B/u lp fuse 20a Body control module (bcm) (on lower left side of dash, below steering column) F10 G401 (on left rear body mount) Hot in run or start Left back-up lamp Park/neutral position (pnp) switch (left side of transmission) Parking assist circuit Pnk Rear lamps junction block Right back-up lamp Trailer connector Trlr b/u fuse 10a Underhood fuse block (left side of eng compt, near battery) Exterior Lamps Wiring Diagram (1 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Exterior Lamps Wiring Diagram (1 of 3) for Chevrolet Avalanche 2003 1500: 45 Anl/ Auto Back-up lamps circuit Body control module (bcm) (on lower left side of dash, below steering column) C2 b2 Computer data lines system D10 Drl F11 Frt park fuse 10a G100 (on left front body mount) G203 (near left "a" pillar) G401 (on left rear body mount) G410 (behind right rear quarter- panel) Hazard switch Head Headlamp switch Hot at all times Hot in run and start I/p relay block Ign e fuse 10a Left Left front marker lamp Left front park/ turn signal lamp Park Park lamp relay Pnk Prk lmp on Prk lmp rly Rear body marker lamp Red Right Right front marker lamp Right front park/ turn signal lamp S100 S101 S217 Serial data Splice pack sp410 Stud 1 fuse 40a Stud 2 fuse 30a To trl park fuse (diagram 2 0f 3) Trailer connector Turn signal/ multi- function switch Under- hood fuse block (on left side of engine compt) Exterior Lamps Wiring Diagram (2 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Exterior Lamps Wiring Diagram (2 of 3) for Chevrolet Avalanche 2003 1500: 54 (chevy) (except w/ 4-wheel steering) (in left rear taillamp harn) (in license lamp harn) (in right hip lamp harn) (in right rear taillamp harn) (w/ roof marker lamps) (w/ 4-wheel steering) (w/ power b A (w/o power adjustable pedals A12 Adjustable pedals C1 d C10 C2 d C3 b6 C3 d C3 h D10 F12 From a frt park fuse (diagram 1 0f 3) G401 (on left rear body mount) Hot at all times I/p relay block Int park fuse 10a Left front clear- ance lamp Left license lamp Left rear clear- ance lamp Left rear marker lamp Left rear turn sig- nal Left tail/ stop- lamp Lr park fuse 10a Rear lamps junction block Red Right front clear- ance lamp Right i/p fuse block Right license lamp Right rear clear- ance lamp Right rear marker lamp Right rear turn sig- nal Right tail/ stop- lamp Rr park fuse 10a S408 S412 S413 S480 S904 S905 S907 S914 Stop lp fuse 25a Stop- lamp switch Trl park fuse 15a Under- hood fuse block (on left side of engine compt) Exterior Lamps Wiring Diagram (3 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Exterior Lamps Wiring Diagram (3 of 3) for Chevrolet Avalanche 2003 1500: 69 (near right "a" pillar) g200 (on right "b" pillar) g306 (w/ level 3 convenience package) A11 Avalanche Battery C10 C3 e1 C6 right i/p fuse block Center high mounted stop lamp (chmsl) Clearance lamps Computer data lines system D10 Driver door module (ddm) (behind left front door trim panel, near handle) Driver outside rearview mirror E10 Except avalanche Ext- erior illum lamp F10 Flash fuse 25a Front passenger door module (fpdm) (behind right front door trim panel, near handle) G200 (near right "a" pillar) G203 (near left "a" pillar) G410 (behind right rear quarterpanel) Ground Hazard sw Hot at all times I/p relay block I/p relay block (below c7 Instrument panel cluster (ipc) Left i/p fuse block (on lower left side of dash) Left roof l marker lamp Left side of dash) Left turn ind Logic Lr lamp volt Lt door lmp gnd Lt door lmp pwr Lt trlr st/trn fuse 10a Lt turn fuse 10a Lt turn sig Lt turn sig volt Nca Passenger outside rearview mirror Red Right i/p fuse block Right roof r marker lamp Right turn ind Rr lamp volt Rt door lmp gnd Rt door lmp pwr Rt trlr st/trn fuse 10a Rt turn fuse 10a Rt turn sig Rt turn sig volt S200 S201 S202 S205 S319 Serial data Splice pack sp410b Stoplamp sw Tan Turn ind Turn signal/flasher module Under- hood fuse block Veh chmsl fuse 10a Veh stop fuse 15a
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 5) for Chevrolet Avalanche 2003 1500 List of elements for Ground Distribution Wiring Diagram (1 of 5) for Chevrolet Avalanche 2003 1500: 68 (exc cadillac) (in forward lamp harness) 5.3l flex fuel A/c compressor clutch A/c low pressure switch Active transfer case Back-up alarm Battery (left) Battery (right) Brake fluid level switch Brake pressure differential switch C1 c C1 e C3 a Coolant level switch Daytime running lamp (drl) (left) Daytime running lamp (drl) (right) Door lock switch (rear cargo) Dual tanks Electronic brake control module Electronic suspension control module F/pmp relay Fog lamp (left) Fog lamp (right) Front axle actuator Fuel composition sensor Fuel pump & sender assembly (secondary) Fuel pump & sender assembly primary G100 (on left front body mount) G101 G104 (left rear of engine block) G105 (lower left front of eng block) G106 (right front of engine block) G107 (engine ground strap) G110 (left front body mount) G304 (under right front seat) G403 (left rear body mount) Headlamp ballast (left) Headlamp ballast (right) Headlamp high beam (left) High beam headlamp (left) High beam headlamp (right) Horn (left) Horn (right) Ign 1 relay Inflatable restraint passenger presense module Inflatable restraint sensing & diagnostic module Low beam headlamp (left) Low beam headlamp (right) Nca Park/turn signal lamp (left front) Park/turn signal lamp (right front) Rear wheel steering control module S102 (in engine harness) S107 Throttle actuator control module Transfer case shift control module Underhood fuse block (left side of engine compt, near battery) W/ dual horns W/ hid W/dual battery W/hid W/o hid W/o vses W/vses Washer fluid level switch Washer fluid pump rear Windshield washer fluid pump Ground Distribution Wiring Diagram (2 of 5) for Chevrolet Avalanche 2003 1500 List of elements for Ground Distribution Wiring Diagram (2 of 5) for Chevrolet Avalanche 2003 1500: 54 Avalanche/ escalade ext C1 a C1 e C2 a C2 d Center high mount stop lamp Door courtesy lamp (left rear) Door courtesy lamp (right rear) Electronic suspension control module Engine oil level switch Escalade ext Exc 8.1l w/o calif lev Exc escalade ext G102 (left side of engine block) G103 (right rear of engine block) G305 (left "b" pillar) G306 (on right "b" pillar) Heated seat element (left rear) Heated seat element (right rear) Heated seat module (left rear) Heated seat module (right rear) Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Ignition coil 7 Ignition coil 8 Intake air temperature (iat)/mass airflow (maf) sensor Memory seat module Memory seat module (passenger) Mini wedge (door jamb switch) (left rear) Mini wedge (door jamb switch) (right rear) Nca Park/ neutral position switch Powertrain control module Rear object sensor control module Rear parking assist diagnostic connector Rear window defogger grid Roof beacon relay S103 (in engine harness) S104 (in engine harness) S110 (in engine harness) S156 (in engine harness) S157 (in right engine ignition coil jumper harness) S319 (in body harness) S332 S389 (right rear heated seat harness) S710 (left rear door harn) S810 (right rear door harn) Window contactor Window switch (right rear) Window switch) (left rear) Ground Distribution Wiring Diagram (3 of 5) for Chevrolet Avalanche 2003 1500 List of elements for Ground Distribution Wiring Diagram (3 of 5) for Chevrolet Avalanche 2003 1500: 76 (not used) A/t shift lock solenoid A12 Air temperature sensor assembly (inside front) Air temperature sensor assembly (inside rear) Analog clock Auto a/c Auto a/c exc avalanche/ escalade ext Auxiliary power outlet (bin) Auxiliary power outlet (console) Auxiliary power outlet (front) Blower motor Blower motor resistor assembly Bose exc luxury C1 4a C1 6c C1 a C1 b9 C1 d9 C1 f6 C2 f C3 c C3 d C4 a C5 e C7 f C8 f C9 a Cad Center high mounted stop lamp Cigar lighter Clearance lamps Clearance switch Courtesy lamp ("b" pillar) Courtesy lamp (right) Data link connector Dome lamp (front) Dome reading lamp (rear) Driver door module Exc cad ext Front passenger door module G200 (behind right side of dash, near right "a" pillar) Headlamp switch Heated seat switch (left rear) Heated seat switch (right rear) Hvac control assembly (front auxiliary) Hvac control module I/p compartment lamp I/p courtesy lamp (left) I/p relay block (below left side of dash, left of steering column) Inside rearview mirror Instrument panel cluster Left i/p fuse block (lower left side of dash) Lock relay Luxury Man a/c Overhead console Reading lamp (rear) Rear wheel steering switch Recirculation actuator Right i/p fuse block (lower right side of dash) Roof beacon switch Roof marker lamp (left) Roof marker lamp (right) S202 S205 S207 (in headliner harness) S352 Sunroof motor Sunroof relay Transfer case shift control switch Underhood lamp Unlock relay Visor lamp (left) Visor lamp (right) Windshield wiper motor module Ground Distribution Wiring Diagram (4 of 5) for Chevrolet Avalanche 2003 1500 List of elements for Ground Distribution Wiring Diagram (4 of 5) for Chevrolet Avalanche 2003 1500: 52 (not used) A12 Audio amplifier B12 Body control module C1 2c C1 a8 C1 b5 C1 c5 C1 d10 C2 a C2 b6 C3 b6 Column shift Data link connector Digital radio receiver Exc luxury G203 (near left "a" pillar) Hazard lamps switch Headlamp switch Hvac control module I/p relay block (below left side of dash, left of steering column Ignition key alarm switch Inflatable restraint steering wheel module coil Instrument panel cluster Left i/p fuse block (lower left side of dash) Luxury Multifunction accessory switch Nca Radio Rear parking assist disable switch Rear seat audio controller Rear seat entertainment assembly Remote playback device (cd player) Right i/p fuse block (lower right side of dash) S213 (in i/p harness) S216 (in steering column harn) S217 (in steering column harn) S330 S333 (in console harness) Steering wheel dic controls Steering wheel speed/ position sensor Tan Theft deterrent control module Tow/haul switch Traction control switch Transfer case shift control module Transmission shift select switch Turn signal hazard flasher module Turn signal/ multifunction switch Vehicle communication interface module Windshield wiper/washer switch Ground Distribution Wiring Diagram (5 of 5) for Chevrolet Avalanche 2003 1500 List of elements for Ground Distribution Wiring Diagram (5 of 5) for Chevrolet Avalanche 2003 1500: 60 (not used) Air temperature actuator Auto a/c Automatic level control compressor Auxiliary power outlet (rear) Backup lamp (left) Backup lamp (right) Blower motor (auxiliary) Blower motor (rear auxiliary) Cargo door key switch Center high mount control stop lamp Clearance lamp (left front) Clearance lamp (left rear) Clearance lamp (right rear) Dome lamp ("d" pillar) Door ajar switch (cargo) Door contact plate (left cargo body) Door contact plate (left cargo door) Door contact plate (right cargo body) Door contact plate (right cargo door) E c1 Electronic suspension control module Escalade Exc avalance/ escalade ext Four wheel steering G401 (left rear body mount) G410 (behind right rear quarterpanel) Hvac control assembly (rear auxiliary) Id lamp Lamp (right front) License lamp (left) License lamp (right) Liftgate ajar switch Liftgate ajar switch (left) Liftgate ajar switch (right) Liftgate key switch Mode actuator (rear) Rear a/c w/aux heater Rear a/c w/o aux heater Rear lamps junction block (inside of left rear frame rail) Rear object sensor control module Rear parking assist diagnostic connector Rear window defogger grid Rear window defogger grid (left cargo) Rear window defogger grid (right cargo) S901 (in liftgate harness) S913 S914 Splice pack sp410 (behind right quarterpanel) Splice pack sp410a (behing right rear quarter- panel) Stop/turn signal lamp (right) Stop/turn signal lamp) (left) Suburban Tail/stop lamp (left) Tail/stop lamp (right) Trailer connector W/ cargo doors W/cargo doors W/liftgate Wiper module (rear)
HEADLIGHTS Headlights Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Headlights Wiring Diagram for Chevrolet Avalanche 2003 1500: 58 (w/ cj2) (w/ t89) (w/o cj2) (w/o t89) A12 Ambient light sensor (on top center of dash) Ambient lt sens Anl/drl defeat Auto Body control module (bcm) (on lower left side of dash, below steering column) Drl fuse 10a Drl relay Drl rly ctrl Drl sw sig Flash to pass Fog lamp switch Fog lp fuse 15a Fog lp relay Fog lp rly ctrl Fog lp sw sig G100 (on left front body mount) G104 (left rear of engine block) G203 (near left "a" pillar) Hdlp dim sw sig Hdlp hi bm relay Hdlp lo bm relay Head Headlamp switch Hi bm rly ctrl Hi hdlp lt fuse 10a Hi hdlp rt fuse 10a Hi/lo beam select Hlps on sig Hot at all times I/p relay block (below left of dash, left of steering column) Interior lights system Left daytime running lamp Left front fog lamp Left high beam head- lamp Left low beam head- lamp Lo bm rly ctrl Lo hdlp lt fuse 10a Lo hdlp rt fuse 10a Low ref Multifunction accessory switch Park Park brake switch (part of park brake assembly) Pk brake sig Right daytime running lamp Right front fog lamp Right high beam head- lamp Right low beam head- lamp S100 S101 S107 S213 Turn signal multifunction switch Underhood fuse block (left side of engine compt)
HORN Horn Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Horn Wiring Diagram for Chevrolet Avalanche 2003 1500: 14 (left side of engine compartment) A11 C1 body control module (behind lower left side of dash, below steering column) G100 (on left front body mount) Horn fuse 15a Horn relay Horn switch Hot at all times Left horn (left side of radiator support) Nca Right horn (right side of radiator support) S101 S10o Underhood fuse block
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 86 (near right "a" pillar) g200 4wd ind A10 A11 A12 Abs ind Air bag ind Analog clock (cadilac only) B10 B11 B12 Batt Battery ind Body control module (bcm) (on lower left side of dash, below steering column) Brake ind C1 lamp Class 2 data Computer data lines Coolant temp gauge Coolant temp ind Cruise ind Dic fuel sig Dic mode sw Dic sw sig Dic toggle sw Eng speed sig Except seo Exterior lights system Fuel gauge G100 (on left front body mount) G200 (near right "a" pillar) G203 (near left "a" pillar) Ground High beam ind Hot at all times Hot in run or start Hour meter I/p dim I/p relay block Ign e fuse 10a Ignition Illumination Ingnition Instrument panel cluster Ipc serial data Ipc/dic fuse 10a Left turn Left turn ind Lo washer fluid Low fuel ind Low trac ind Message display Mil cntrl Nca Odometer Oil gauge Oil pressure ind Orn Pnk Prnd321 Radio fuse 15a Red Reset Right turn Right turn ind S100 S202 S303 Seat belt ind Seo Seo b1 fuse 15a Seo ign fuse 10a Service engine soon ind (mil) Speedometer Tachometer Temp ind transmission Tow/haul ind Trac off ind Transmission shift select switch Transmission temp gauge Trip Underhood fuse block (left side of engine compt) Variable dimming Volts gauge Vss Washer fluid level sensor (in washer fluid reservoir) Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 46 (in secondary fuel tank) (near left kick panel) i/p relay block 5 volt ref 5.3l flex fuel A10 C10 Class 2 data Computer data lines Coolant level switch (in coolant reservoir) Coolnt lev sig Eng speed sig Engine controls system Engine oil level switch (on lower right side of oil pan) Engine oil pressure sensor (on top rear of engine) Fuel Fuel lev sens Fuel pump & sender assembly (primary) (in primary fuel tank) Fuel pump & sender assembly (secondary) G103 (on right rear of engine block) G104 (on left rear of engine block) G203 (near left "a" pillar) I/p relay block Inflatable restraint steering wheel module coil Low ref Mil ctrl Nca Oil lev sw Oil pres sig Person- alization Powertrain control module (pcm) (on left front of engine compt) Radio (w/ navigation clock) Rear object sensor control module (under 2nd row seat (cadilac only) Rear wheel steering control module (w/ 4 wheel c4 steering) (below vehicle, between spare tire & rear bumper) S102 S103 S216 S312 Sba sig Select Steering wheel dic controls Suburban, yukon xl, escalade ext, avalanche Tahoe, yukon, escalade Trip Vss W/ dual tank W/o dual tank
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Courtesy Lamps Wiring Diagram (1 of 3) for Chevrolet Avalanche 2003 1500: 42 A11 B12 Body control module (lower left side of dash, below steering column) C5 a1 Cargo lamp low ctrl Class 2 data Class 2 serial data Ctsy lamp ctrl Ctsy lamp on sig Ctsy lamp power Dome lamp switch Door ajar sig Driver door module (behind left front door trim panel, near handle F tan G305 (left "b" pillar) G306 (on right "b" pillar) G410 Headlamp switch Int lamp defeat sig Int lamp defeat sw Left front door courtesy lamp Left liftgate ajar switch Liftgate ajar sig Liftglass ajar switch Low ref Lr door ajar sig Lr door courtesy lamp (2003) Mini wedge (driver door jamb switch) Mini wedge (lr door jamb switch) Mini wedge (rr door jamb switch) Right cargo door ajar switch Right cargo door contact plate Right liftgate ajar switch Rr door ajar sig Rr door courtesy lamp (2003) S910 (in liftgate harness) S911 Sp205 (left side of dash) Splice pack sp410 (behind right rear quarterpanel) Tan W/ cargo doors W/o cargo doors Courtesy Lamps Wiring Diagram (2 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Courtesy Lamps Wiring Diagram (2 of 3) for Chevrolet Avalanche 2003 1500: 10 Dome Left vanity mirror lamp Map lamps Overhead console Reading Rear courtesy reading lamps Relay block) Right vanity mirror lamp S2345 Tan Courtesy Lamps Wiring Diagram (3 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Courtesy Lamps Wiring Diagram (3 of 3) for Chevrolet Avalanche 2003 1500: 25 (2003) A12 C10 C11 Cargo lamp switch Class 2 data Ctsy lamp control Ctsy lamp power Door ajar sig Driver cargo lamp assembly Front passenger door courtesy light Front passenger door module (fpdm) (in right front door) G200 (behind right side of dash near right "a" pillar) G203 (near left "a" pillar) I/p compartment lamp (2003) I/p relay block (below left side of dash, left of steering column) Left i/p fuse block (under left side of dash) Low ref Mini wedge (front passenger door jamb switch) Passenger cargo lamp assembly Right i/p fuse block (lower right side of dash) S202 S205 S213 Tan Instrument Illumination Wiring Diagram (1 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Instrument Illumination Wiring Diagram (1 of 3) for Chevrolet Avalanche 2003 1500: 49 (below vehicle, between spare tire and rear bumper) 2 hi ind 2 hi ind control 2ws ind 2ws ind control 4 hi ind 4 hi ind control 4 lo ind 4 lo ind control 4ws ind 4ws ind control 5 volt ref A11 A12 Auto 4wd ind B pnk B11 Body control module (lower left side of dash, below steering column) C pnk Cluster Control Diff lock ind control Dimming input Dimming return Drl off Drl off ind ctrl Fog lamp rly ctrl G305 (left "b" pillar) G306 (right "b" pillar) Headlamp on Headlamp on ind ctrl Headlamp switch Instrument Instrument panel dimming Left rear window switch Nr4 = transfer case, 4 wheel drive, open differential, 2 speed np8 = new venture gear 246 Pnk Rear wheel steering control module Rear wheel steering mode select switch (w/ four wheel steering) Red Right rear window switch S212 Tan Tow ind Tow mode ind Transfer case shift control module (behind headlamp switch) Transfer case shift control switch W/ np8 W/ nr4 Instrument Illumination Wiring Diagram (2 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Instrument Illumination Wiring Diagram (2 of 3) for Chevrolet Avalanche 2003 1500: 21 (behind center of dash) hvac control module (left side of engine compt, near battery) underhood fuse block (near left "a" pillar) g203 8 bulbs C201 Fog lamp circuit Left rear heated seat switch Multifunction accessory switch Nw7 = electronic traction control jl4 = active brake control Overhead console Rear parking assist disable switch (w/ ueb) Remote playback device-cd player Right rear heated seat switch S205 S213 S303 Steering wheel controls Traction control switch Transfer case shift control switch W/ jl4 W/ nw7 Instrument Illumination Wiring Diagram (3 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Instrument Illumination Wiring Diagram (3 of 3) for Chevrolet Avalanche 2003 1500: 36 multifunction accessory switch (lower left side of radiator support) g100 (w/ sunroof) sunroof switch (w/ t89) (w/ z75) 3 bulbs A11 Analog clock Auto a/c B3 c1 C10 Fog lamps Front auxiliary hvac control assembly G200 (behind right side of dash, near right "a" pillar) G203 (near left "a" pillar) G410 G410 (behind right rear quarter panel) Gnd Headlamp leveling switch Heated/ cooled cupholder Hvac control module (behind center of dash) I/p relay block (below left side of dash, left of steering column) Manual a/c Radio Rear auxiliary hvac control assembly Right i/p fuse block (lower left side of dash) Roof beacon switch S101 S202 S345 Splice pack sp410a (behind right rear quarter panel) W/ c69 and c36 W/ c69 w/o c36 W/ t89 W/ t96 Z75 = conversion name plate cadillac
MEMORY SYSTEMS Adjustable Pedal Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Adjustable Pedal Wiring Diagram for Chevrolet Avalanche 2003 1500: 43 (in driver seat jumper harn) (in driver seat jumper harn) s314 (in driver's door) (in left front door hard) Ad peed fwd ctrl Ad peed mt. fwd ctrl Ad peed mt. r&d ctrl Ad peed r&d ctrl Ad peed relay ctrl Adjust pdl sensor sig Batt (+) C1 a1 C10 h Class 2 serial data Computer data lines system Driver back heated seat element Driver door module Driver seat recliner motor position sensor Eap fuse 15a Electronic adjustable pedals assembly Electronic adjustable pedals relay (behind lower left of dash) Electronic adjustable pedals switches Em 1 sw sig Em 2 sw sig Exit Front pass- enger back heated seat element G305 (on left "b" pillar) Gnd Hot at all times I/p relay block (left of steering column) Low ref Memory seat module (under left front seat) Memory/ heated seat switch Pnk Recline mtr pos sen sig Red S311 (in driver seat harn) S315 S500 Seat circuit breaker 30a Set Tan Underhood fuse block (left side of engine compt) Memory Mirrors Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Memory Mirrors Wiring Diagram for Chevrolet Avalanche 2003 1500: 54 5 volt ref Batt (+) Battery Class 2 serial data Computer data lines system Ddm fuse 15a Defogger system Down Driver Driver door module (in driver's door) Driver outside rearview mirror Electro- chromic Electrochromic ref Exit Folding/ telescoping motor Front passenger door module (in passenger's door) Front passenger outside rearview mirror G200 (near right "a" pillar) G203 (near left "a" pillar) Ground Heating element Horiz pos sig Horizontal Hot at all times I/p relay block (left of steering column) Left Left i/p fuse block (lower left side of dash) Logic Logic logic Low ref Lt doors circuit breaker 25a Mem 1 sw sig Mem 2 sw sig Memory/ heated seat switch Mir mtr common Mir mtr dwn ctrl Mir mtr extend ctrl Mir mtr retract ctrl Mir mtr rt ctrl Mirror position Mirror select Passenger Pdm fuse 15a Pnk Red Right Right i/p fuse block (lower right side of dash) Rt door circuit breaker 25a S202 Set Switch pwr Tan Vert pos sig Vertical Memory Seat Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Memory Seat Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 67 (in driver seat harn) 5 volt ref Adj ped pos sens sig Batt (+) C (not used) C10 h Class 2 serial data Computer data lines system Driver seat adjuster switch Frt dwn Frt up Frt vert dn sw sig Frt vert mtr dn ctrl Frt vert mtr pos sen Frt vert mtr up ctrl Frt vert up sw sig Fwd G305 (on left "b" pillar) Gnd Heated seat cus pwr Heated seat temp sig Horiz fwd sw sig Horiz mtr fwd ctrl Horiz mtr pos sen sig Horiz mtr rwd ctrl Horiz rwd sw sig Hot at all times Htd seat back ctrl Htd seat back pwr Htd seat cus ctrl Htd seat cus pwr I/p relay block (left of steering column) Low ref Lum horiz pos sen sig Lum mtr fwd ctrl Lum mtr rwd ctrl Lum mtr rwd ctrl lum mtr rwd ctrl Memory seat module (under left front seat) Memory system (adjustable pedal circuit) Pnk Pnk pnk Rear vert dn sw sig Rear vert mtr pos sens Rear vert up sw sig Rec fwd Rec rwd Recline fwd sw sig Recline mtr fwd ctrl Recline mtr pos sen sig Recline mtr rwd ctrl Recline rwd sw sig Rr dwn Rr up Rr vert mtr dn ctrl Rr vert mtr up ctrl Rwd S311 S314 S315 (in driver seat jumper harn) Seat circuit breaker 30a Seats system (heated seats circuit) Tan Torso blstr in sw sig Torso blstr out sw sig Torso bolster in ctrl Torso bolster out ctrl Trso blstr pos sens sig Memory Seat Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Memory Seat Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 29 (in driver seat jumper harn) s309 (in driver seat jumper harn) s310 A red Batt (+) C (not used) Class 2 serial data Computer data lines system Driver door module (behind left front door trim panel, near handle) Driver seat bolster motor Driver seat bolster motor position sensor Driver seat bolster/ lumbar switch Driver seat front vertical motor Driver seat front vertical position sensor Driver seat horiz- ontal position sensor Driver seat lumbar motor Driver seat lumbar motor position sensor Driver seat rear vertical motor Driver seat rear vertical position sensor Driver seat recliner motor Driver seat recliner motor position sensor Exit Mem 1 sw sig Mem 2 sw sig Memory/ heated seat switch Out Pnk Red Set Tan
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 6) for Chevrolet Avalanche 2003 1500 List of elements for Power Distribution Wiring Diagram (1 of 6) for Chevrolet Avalanche 2003 1500: 76 (base) (exc base) 125a 4ws fuse 15a 5.3l w/dual battery A c7 A12 Abs fuse 60a Analog clock Audio amplifier Automatic level control compressor Automatic level control relay B c3 B c7 B c9 B11 c1 B12 c1 B2 c3 Battery (left) Battery (right) Battery fuse 125a Body control module C6 a C9 d Cig ltr fuse 15a Cigar lighter D2 c1 Data link connector Digital radio receiver E10 Eap fuse 15a Electronic adjustable pedals relay Electronic brake control module Electronic suspension control module Evaporative emissions canister vent solenoid Except luxury F2 c1 Fuse holder Fuse holder (w/qs4) Fusible link G200 (behind right side of dash, near "a" pillar) Generator I/p relay block (left of steering column) Ign a fuse 40a Ign b fuse 40a Luxury Nca Radio Radio amp fuse 30a Radio fuse 15a Rear seat audio (rsa) controller Rear wheel steering control module Rear window wiper module Red Rr wiper fuse 25a Rtd fuse 30a S112 (in chassis harness) S205 s303 S208 Starter Starter relay Stud 1 fuse 40a Stud 2 fuse 30a Sunroof fuse 25a Sunroof motor Sunroof relay Tbc batt fuse 10a To ignition switch (diagram 5 of 6) To ignition switch (diagram 6 of 6) To ipc/dic fuse (diagram 2 of 6) Trailer connector Underhood fuse block (left side of engine compt, near battery) Underhood junction block Upfitter battery junction block Vses/ ecas fuse 60a W/ vses W/o vses Power Distribution Wiring Diagram (2 of 6) for Chevrolet Avalanche 2003 1500 List of elements for Power Distribution Wiring Diagram (2 of 6) for Chevrolet Avalanche 2003 1500: 73 (cj2) (exc cj2) (cj3) (cj2) (not used) A c8 A g A10 Aux pwr fuse 20a Auxiliary power outlet (bin) Auxiliary power outlet (console) Auxiliary power outlet (front) B c2 c1 B c3 B c5 B11 B11 c1 Blower fuse 40a Blower motor resistor assembly C1 c2 C1 f12 C10 C4 e6 D c4 D12 Defog relay E b E c1 E11 c1 Exc seo Except luxury F/pmp relay From sunroof fuse (diagram 1 of 6) G200 (near right 'a" pillar) Garage door opener Headlamp ballast (left) Headlamp ballast (right) Hvac control assembly (rear auxiliary) Hvac control module Hvac/ecas fuse 10a I/p relay block (left of steering column) In i/p harness) Info fuse 15a Instrument panel cluster Ipc/dic fuse 10a Lh hid fuse 20a Luxury Overhead console Pcm b fuse 20a Powertrain control module Ptc Ptc thermistor Rear seat entertainment assembly Red Remote playback device (cd player) Rh hid fuse 20a Right i/p fuse block (lower right side of dash) Roof beacon relay Roof beacon switch Rr defog fuse 30a Rr hvac fuse 30a S335 Seo Seo b1 fuse 15a Seo b2 fuse 30a Stop lp fuse 25a Stoplamp switch To lbec 1 fuse (diagram 3 of 6) Transfer case encoder motor Transfer case shift control module Trec fuse 30a Underhood fuse block (left side of engine compt, near battery) Vehicle communication interface module W/adjustable pedals W/o adjustable pedals Power Distribution Wiring Diagram (3 of 6) for Chevrolet Avalanche 2003 1500 List of elements for Power Distribution Wiring Diagram (3 of 6) for Chevrolet Avalanche 2003 1500: 90 (below left side of dash, left of steering column) i/p relay block (left side of engine compt, near battery) underhood fuse block (not used) (passenger seat harness) A c5 A c6 A/c comp fuse 10a A/c comp relay A10 c1 A12 A7 c1 Aux pwr 2 fuse 20a Auxiliary power outlet (rear) B c7 B10 B12 B7 c2 Body control module C c3 C9 c1 Ddm fuse 15a Driver door module Drl fuse 10a Drl relay E c10 E c7 E10 E11 c1 E12 E3 c3 Ecc fuse 10a Etc/ecm fuse 15a Evaporative emissions (evap) canister purge solenoid F c3 F1 c1 Flash fuse 25a Fog lp fuse 15a Fog lp relay From mbec 1 fuse (diagram 3 of 6) From pcm b fuse (diagram 2 of 6) Front passenger door module Fuel composition sensor Fuel pump (fp) relay (secondary) G c4 G104 (on left rear of engine block) G410 (behind right rear quarter- panel) Hdlp-hi relay Hdlp-low relay Horn relay Hvac control assembly (rear auxiliary) Ign 1 relay Intake air temperature (iat)/mass airflow (maf) sensor assembly Lbec 1 fuse 50a Lbec 2 fuse 50a Left i/p fuse block (lower left side of dash) Lock relay Locks fuse 20a Lt doors circuit breaker 25a Lumbar bolster switch (front passenger) M c4 Mbec 1 fuse 50a Memory seat module Park lp relay Pcm 1 fuse 15a Pdm fuse 15a Pnk Powertrain control module Red Right i/p fuse block (lower right side of dash) Rt door circuit breaker 25a S102 S328 Sba fuse 15a Seat adjuster switch (driver) Seat adjuster switch (front passenger) Seat circuit breaker 30a Splice pack sp410 Tbc 2a fuse 15a Tbc 2b fuse 15a Tbc 2c fuse 15a Throttle actuator control module To ign 1 relay (diagram 3 of 6) To inj 1 fuse (diagram 4 of 6) To seo ign fuse (diagram 6 of 6) Turn signal/ hazard flasher module Unlock relay W/s wash fuse 15a W/s wash relay Window switch (left rear) Window switch (right rear) Power Distribution Wiring Diagram (4 of 6) for Chevrolet Avalanche 2003 1500 List of elements for Power Distribution Wiring Diagram (4 of 6) for Chevrolet Avalanche 2003 1500: 32 (left side of engine, compt, near battery) underhood fuse block (not used) 4.8l, 5.3l, 6.0l 8.1l C10 D10 E10 From pcm 1 fuse (diagram 3 of 6) Fuel injector 1 Fuel injector 2 Fuel injector 3 Fuel injector 4 Fuel injector 5 Fuel injector 6 Fuel injector 7 Fuel injector 8 Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Ignition coil 7 Ignition coil 8 Inj 1 fuse 15a Inj 2 fuse 15a Pnk Pnk a S152 (left engine ignition coil jumper harn) S153 (right engine ignition coil jumper harn) S154 (right engine ignition coil jumper harn) S155 Power Distribution Wiring Diagram (5 of 6) for Chevrolet Avalanche 2003 1500 List of elements for Power Distribution Wiring Diagram (5 of 6) for Chevrolet Avalanche 2003 1500: 67 (behind lower left side of dash) left i/p fuse block (not used) (steering column harness) s240 (w/vses) (w/o vses) 4wd fuse 15a Acc Air temperature actuator (auxiliary) Air temperature actuator (left) Air temperature actuator (right) Auto a/c Automatic level control relay Automatic transmission Body control module Brake fuse 10a C1 c9 C1 d12 C1 e8 C175 C4 b C4 c Clutch start switch Crank fuse 10a Cruise Cruise control module Cruise control on/off switch Cruise fuse 10a E11 Electronic brake control module Electronic suspension control module Escalade ext Except escalade ext F10 From ign a fuse (diagram 1 of 6) Front axle actuator Heated seat module (left rear) Heated seat module (right rear) Htr/ac fuse 30a Hvac 1 fuse 10a Hvac control assembly (rear auxiliary) Hvac control module Hvac control processor (auxiliary) Ign 0 fuse 10a Ign 3 fuse 10a Ignition switch Lock Manual a/c Mode actuator Mode actuator (auxiliary) Off Pnk Power takeoff (pto) switch Powertrain control module Pto Rear wheel steering control module Recirculation actuator Red Right i/p fuse block (lower right side of dash) Run Start Steering wheel speed/ position sensor Stoplamp switch Tbc ign 0 fuse 10a Theft deterrent control module Traction control switch Transfer case shift control switch Turn signal multifunction switch Underhood fuse block (left side of engine compt, near battery) Power Distribution Wiring Diagram (6 of 6) for Chevrolet Avalanche 2003 1500 List of elements for Power Distribution Wiring Diagram (6 of 6) for Chevrolet Avalanche 2003 1500: 61 (left side of engine compt, near battery) underhood fuse block (not used) A/c comp relay Acc Auxiliary power outlet B/u lp fuse 20a Body control module C c8 C1 b2 C10 C8 d8 D c5 D10 c1 Defog relay E c3 Exc 8.l w/o california lev Exc seo F11 F8 c2 From ign 1 relay (diagram 3 of 6) From ign b fuse (diagram 1 of 6) G203 (behind left side of dash, near left "a" pillar) Heated oxygen sensor bank 1 sensor 1 Heated oxygen sensor bank 1 sensor 2 Heated oxygen sensor bank 2 sensor 1 Heated oxygen sensor bank 2 sensor 2 I/p relay block (left of steering column) Ign e fuse 10a Ignition switch Inflatable restraint passenger presence module Inflatable restraint sensing & diagnostic module Inside rearview mirror Instrument panel cluster Left i/p fuse block (behind lower left side of dash) Lock Nca O2a fuse 15a O2b fuse 15a Off Park/neutral position switch Pnk Rear object sensor control module Rear wiper/ washer switch Rr wpr fuse 15a Run S337 S338 Seo Seo accy fuse 10a Seo ign fuse 10a Sir fuse 15a Start Tbc accy fuse 10a Tbc ign 1 fuse 10a Thermo cupholder assembly Turn signal/ multifunction switch Upfitter battery junction block W/ thermo console W/o thermo console Windshield wiper motor module Ws wpr fuse 25a
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Power Door Locks Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 44 (lower left side of dash) left i/p fuse block 87a A12 B12 Battery Body control module (on lower left side of dash, below steering column) C1 a2 C1 a7 C1 f6 C3 f C4 f C4 l Cargo door contact plate Cargo/liftgate door lock actuator Ddm fuse 15a Driver door module (inside driver door) Front passenger door module (inside front passenger door) G200 (below right side of dash) G203 (upper left kick panel) Ground Hot at all times I/p relay block (near left kick panel) Ign key sw Ignition key alarm switch (on ignition key cylinder) Key sw Key sw sig Left i/p fuse block (behind left side of dash) Left i/p fuse block (on lower left side of dash) Left rear door lock actuator Lock ctrl Locks fuse 20a Lt doors circuit breaker 25a Pdm fuse 10a Powertrain control module (left front side of engine compartment) Rear door lock relay Rear door unlock relay Right i/p fuse block (behind right side of dash) Right rear door lock actuator S217 (steering tan column harness) Serial data Tan Unlock ctrl W/ cargo doors W/o cargo doors Power Door Locks Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Power Door Locks Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 25 (lower right side of dash) right i/p fuse block C1 c9 C1 d12 Cargo door key switch Door contact plate Driver mini wedge door jamb switch Front passenger mini wedge door jamb switch G410 (near right "d" pillar) Hot at all times I/p relay block (below left side of dash) Instrument panel cluster Key sw Liftgate key switch Lock Right i/p fuse block (behind right side of dash) Rt door circuit breaker 25a S601 (near front passenger door module breakout) S911 Splice pack sp205 (behind left i/p fuse block) Splice pack sp410 Tan Tbc batt fuse 10a Underhood fuse block (on left side of engine compt) W/ cargo doors W/o cargo doors
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Electrochromic Mirror Wiring Diagram for Chevrolet Avalanche 2003 1500: 32 A12 A7 c1 Air temp sensor B11 B12 Back up lamp voltage output c5 Back up voltage Body control module (bcm) (on lower left side of dash, below steering column) Body relay block (under left side of dash, near kick panel) Computer data lines system Driver door module (ddm) Driver outside rearview mirror Electrochromic mirror G200 (near right "a" pillar) Ground Hot in run & start Ign 1 Inside rearview mirror Left i/p fuse block (behind lower left side of dash) Low ref Mir signal Nca On/off Outside air temperature sensor Pnk Right i/p fuse block (on lower right side of dash) S202 (in i/p harness) S207 (in headliner harness) S211 (in i/p harness) Serial data Sir fuse 15a Underhood fuse block Power Mirrors Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Power Mirrors Wiring Diagram for Chevrolet Avalanche 2003 1500: 43 5 volt ref B11 Battery Class 2 serial data Computer data lines system Ddm fuse 15a Driver door module (behind left front door trim panel, near handle) Driver outside rearview mirror Electro- chromic Folding/ telescoping motor Front passenger door module (behind right front door trim, near handle) Front passenger outside rearview mirror G200 (near right "a" pillar) Ground Heating element Horizontal Hot at all times Hvac control module (behind center of dash) I/p relay block (below left side of dash, left of steering column) Left Left i/p fuse block (lower left side of dash) Low ref Lt doors circuit breaker 25a Mir htr low ref Mir htr sply voltage Mir mtr dwn ctrl Mir mtr extend ctrl Mir mtr retract ctrl Mir mtr rt ctrl Mir position sens sig Mir sens low ref Mir signal Mtr position sens sig Pdm fuse 15a Pnk Red Right i/p fuse block (lower right side of dash) Rt door circuit breaker 25a Rt/dwn mtr common S202 (in i/p harness) Tan Vert posit sens sig Vertical
POWER SEATS Driver Seat Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Driver Seat Wiring Diagram for Chevrolet Avalanche 2003 1500: 16 Back C10 Driver seat adjuster switch Driver seat front vertical motor Driver seat horizontal motor Driver seat rear vertical motor Front dn Front up Fwd Hot at all times I/p relay block Rear dn Rear up Red Seats circuit breaker 30a Tan Front Seat Heater Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Front Seat Heater Wiring Diagram for Chevrolet Avalanche 2003 1500: 61 (in driver seat jumper harness) (in driver's seat harness) s311 (not used) Back & cushion select Back only ind Back only indicator Back only select Batt Batt (+) Bck & csh select C1 4a C1 7e C1 a7 C1 c9 C1 f6 C10 h C2 f C3 c C3 d C3 f C4 a C7 c C7 e Computer data lines system Ddm fuse 15a Driver back heated seat element Driver cushion heated seat element Driver door module Element control Front passenger back heated seat element Front passenger cushion heated seat element Front passenger door module G200 (near right "a" pillar) G305 (on left "b" pillar) Gnd Ground Hi heat ind Hi heat indicator Hot at all times I/p relay block Left i/p fuse block Low heat ind Low heat indicator Low ref Lt doors circuit breaker 25a Med heat ind Med heat indicator Memory seat module (underside of left front seat) Memory/heated seat switch Nca Pdm fuse 10a Pnk Right i/p fuse block Rt doors circuit breaker 30a S202 S314 Seats circuit breaker 30a Serial data Switch power Tan Temp signal Passenger Full Feature Seat Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Passenger Full Feature Seat Wiring Diagram for Chevrolet Avalanche 2003 1500: 19 Back C10 Fr dn Fr up Front passenger seat adjuster switch Front passenger seat front vertical motor Front passenger seat horizontal motor Front passenger seat rear recliner motor Front passenger seat rear vertical motor Fwd Hot at all times I/p relay block Red Rr dn Rr up S328 S329 Seats circuit breaker 30a Tan Passenger Power Seat Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Passenger Power Seat Wiring Diagram for Chevrolet Avalanche 2003 1500: 16 Back C10 Front dn Front passenger seat adjuster switch Front passenger seat front vertical motor Front passenger seat horizontal motor Front passenger seat rear vertical motor Front up Fwd Hot at all times I/p relay block Rear dn Rear up Red Seats circuit breaker 30a Tan Passenger"s Lumbar Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Passenger"s Lumbar Wiring Diagram for Chevrolet Avalanche 2003 1500: 11 C10 e Front passenger lumbar/ bolster switch Front passenger seat bolster m0tor Front passenger seat lumbar m0tor Hot at all times I/p relay block Out Pnk S328 S329 Seats circuit breaker 30a Rear Heated Seats Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Rear Heated Seats Wiring Diagram for Chevrolet Avalanche 2003 1500: 35 Battery C1 f7 C10 G200 (near right "a" pillar) G305 (left "b" pillar) G306 (right "b" pillar) Ground High heat High indicator control Hot at all times Hot in run I/p relay block Ign 3 Ign 3 fuse 10a Interior lights system Left i/p fuse block Left rear heated seat element Left rear heated seat module Left rear heated seat switch Low heat Low indicator control Mode Nca Pnk Ptc thermistor Right rear heated seat element Right rear heated seat module Right rear heated seat switch S303 S308 S332 S389 Seo b1 fuse 15a Signal Underhood fuse block
POWER TOP/SUNROOF Moonroof Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Moonroof Wiring Diagram for Chevrolet Avalanche 2003 1500: 24 B11 c1 Battery Close G200 (upper right dash at "a" pillar) Ground Hot at all times Hot w/rap relay energized Mtr out 1 Mtr out 2 Open Rap relay Red Right i/p fuse block (lower right side of dash) Right i/p fuse block (lower right side of dash) S205 S208 S351 (in sunroof harness) S352 Sun roof fuse 25a Sun roof module (near rear of sun roof) Sun roof relay (at lower side of right "a" pillar) Sunroof motor Sunroof switch Underhood fuse block (left side of engine compt, near battery)
POWER WINDOWS Power Windows Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Power Windows Wiring Diagram for Chevrolet Avalanche 2003 1500: 59 B+ volt B12 Bcm class 2 serial data Body control module (left side of dash) Body relay block C1 7b C10 C7 e Ddm class 2 serial data Driver door module Driver window motor Front passenger door module Front passenger window motor G305 (on left "b" pillar) G306 (on right "b" pillar) Ground Hot at all times Illumination Interior lights system Left front window Left i/p fuse block (left side of dash) Left rear window Left rear window motor Left rear window switch Logic Lr window Lt doors circuit breaker 25a Pwr wnd lockout lr sig Pwr wnd lockout lr signal Pwr wnd lockout rr sig Pwr wnd lockout rr signal Pwr wnd motor lf down cntrl Pwr wnd motor lf up cntrl Pwr wnd motor lr rear down cntrl Pwr wnd motor lr rear up cntrl Pwr wnd motor rf down cntrl Pwr wnd motor rf up cntrl Pwr wnd motor rr rear down cntrl Pwr wnd motor rr rear up cntrl Pwr wnd sw lr down sig Pwr wnd sw lr up sig Pwr wnd sw rr down sig Pwr wnd sw rr up sig Pwr wnd switch lr down signal Pwr wnd switch lr up signal Pwr wnd switch rr down signal Pwr wnd switch rr up signal Right i/p fuse block (right side of dash) Right rear window Right rear window motor Right rear window switch Rr window Rt doors circuit breaker 25a Splice pack sp205 Switch power Tan Window down Window right front Window up
RADIO Base Radio Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Base Radio Wiring Diagram for Chevrolet Avalanche 2003 1500: 49 A10 A11 A12 Antenna Aud out - B10 B11 B12 Bare Cell voice sig Coax Common aud sig Computer data lines system Digital radio antenna Digital radio receiver (if equipped) Drain wire G203 (near left "a" pillar) Ground Hot at all times I/p fuse block (below lower left side of dash) Left aud sig Left front door speaker Left front tweeter speaker Left i/p fuse block (on lower left side of dash) Left rear door speaker (avalanche) left "d" pillar speaker (except avalanche) Lf aud + Lf spk out+ Lf spk out- Lr spk out + Lr spk out - Nca Radio Radio fuse 15a Rf spk out + Rf spk out - Right aud sig Right front door speaker Right front tweeter speaker Right i/p fuse block (on lower right side of dash) Right rear door speaker (avalanche) right "d" pillar speaker (except avalanche) Rr spk out+ Rr spk out- Rt aud + Serial data Tan Underhood fuse block (at left side of engine compartment) Vehicle communication interface module Voice low ref Voice signal Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 3) for Chevrolet Avalanche 2003 1500: 62 (behind left i/p fuse block) sp205 (in console harness) s330 A10 A11 A12 Antenna B10 B11 B12 B31 Bare Bcm class 2 serial data Body control module C201 Cell voice sig Common aud sig Computer data lines system Drain wire Enable sig G203 (near left "a" pillar) Ground Hot at all times I/p relay block (below lower left side of dash) Inflatable restraint steering wheel module coil Left aud sig Lf spk out+ Lf spk out- Lr aud sig+ Lr aud sig- Lr spk out + Lr spk out - Nca Pnk Prog Radio Radio fuse 15a Radio mute Radio on sig Rear seat audio controller (on rear of center console) Remote radio control signal Rf spk out + Rf spk out - Right aud sig Rr aud sig+ Rr aud sig- Rr spk out+ Rr spk out- S210 Seek dn Seek up Serial data Source dn Source up Steering wheel audio controls Tan Underhood fuse block (at left side of engine compartment) Vehicle communication interface module Voice Voice low ref Voice signal Vol dn Vol up Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 3) for Chevrolet Avalanche 2003 1500: 52 A10 A11 A12 Audio amplifier B10 B11 B12 Bare Drain wire Ground Hot at all times I/p relay block (below lower left side of dash) L spk out+ L spk out- Left "d" pillar (except escalade ext) Left front door speaker Left front tweeter speaker Left i/p fuse block (on lower left side of dash) 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- Pnk R spk out+ R spk out- Radio fuse 15a Radio mute Radio on sig Rf aud sig+ Rf aud sig- Rf spkr out+ Rf spkr out- Right "d" pillar (except escalade ext) Right front door speaker Right front tweeter speaker Right i/p fuse block (on lower right side b of dash) Right rear door speaker Right subwoofer Rr aud sig+ Rr aud sig- Rr spkr out+ Rr spkr out- Rsa enable Subwoofer speaker Tan Underhood fuse block (at left side of engine compartment) Mid-Line Radio Wiring Diagram, with Rear Seat Audio (3 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (3 of 3) for Chevrolet Avalanche 2003 1500: 24 Antenna Aud out - B11 Bare Coax Com aud sig Computer data lines system Data lines Digital radio antenna Digital radio receiver (if equipped) Drain wire G203 (near left "a" pillar) Ground Hot at all times I/p relay block (below lower left side of dash) Info fuse 15a Lf aud + Lt aud sig Rear seat entertainment assembly (if equipped) Rt aud + Rt aud sig Serial data Splice pack sp250 Underhood fuse block (at left side of engine compartment) Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 3) for Chevrolet Avalanche 2003 1500: 57 (behind left i/p fuse block) sp205 (in console harness) A10 A11 A12 Antenna B10 B11 B12 B31 Bare Bcm class 2 serial data Body control module C201 Cell voice sig Common aud sig Computer data lines system Drain wire G203 (near left "a" pillar) Ground Hot at all times I/p relay block (below lower left side of dash) Inflatable restraint steering wheel module coil Left aud sig Lf spk out+ Lf spk out- Lr spk out + Lr spk out - Nca Pnk Prog Radio Radio fuse 15a Radio mute Radio on sig Remote radio control signal Rf spk out + Rf spk out - Right aud sig Rr spk out+ Rr spk out- S210 S330 Seek dn Seek up Serial data Source dn Source up Steering wheel audio controls Tan Underhood fuse block (at left side of engine compartment) Vehicle communication interface module Voice Voice low ref Voice signal Vol dn Vol up Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 3) for Chevrolet Avalanche 2003 1500: 52 A10 A11 A12 Audio amplifier B10 B11 B12 Bare Drain wire Ground Hot at all times I/p relay block (below lower left side of dash) L spk out+ L spk out- Left "d" pillar (except escalade ext) Left front door speaker Left front tweeter speaker Left i/p fuse block (on lower left side of dash) 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- Pnk R spk out+ R spk out- Radio fuse 15a Radio mute Radio on sig Rf aud sig+ Rf aud sig- Rf spkr out+ Rf spkr out- Right "d" pillar (except escalade ext) Right front door speaker Right front tweeter speaker Right i/p fuse block (on lower right side b of dash) Right rear door speaker Right subwoofer Rr aud sig+ Rr aud sig- Rr spkr out+ Rr spkr out- Rsa enable Subwoofer speaker Tan Underhood fuse block (at left side of engine compartment) Mid-Line Radio Wiring Diagram, without Rear Seat Audio (3 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (3 of 3) for Chevrolet Avalanche 2003 1500: 25 Antenna Aud out - B11 Bare Coax Com aud sig Computer data lines system Data lines Digital radio antenna Digital radio receiver (if equipped) Drain wire G203 (near left "a" pillar) Ground Hot at all times I/p relay block (below lower left side of dash) Info fuse 15a Lf aud + Lt aud sig Nca Rear seat entertainment assembly (if equipped) Rt aud + Rt aud sig Serial data Splice pack sp250 (left end of dash) Underhood fuse block (at left side of engine compartment) Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (1 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (1 of 3) for Chevrolet Avalanche 2003 1500: 76 (behind left i/p fuse block) sp205 (in console harness) A10 A11 A12 Am antenna Ant enable sig Antenna B10 B11 B12 B31 Bare Bcm class 2 serial data Body control module C201 Cell voice sig Coax Common aud sig Computer data lines system Drain wire Enable sig Engine controls system Escalade ext Except excalade ext Fm antenna Fm comp sig Fm impedance matching module (in right rear quarter glass) G203 (near left "a" pillar) Ground Hot at all times I/p fuse block (below lower left side of dash) Inflatable restraint steering wheel module coil Left aud sig Lf spk out+ Lf spk out- Lr aud sig+ Lr aud sig- Lr spk out + Lr spk out - M m Nca Out to radio Pnk Prog Radio Radio antenna module (above right rear quarter glass, in headliner) Radio fuse 15a Rear seat audio controller (on rear of center console) Red Remote radio control signal Rf spk out + Rf spk out - Right aud sig Rr aud sig+ Rr aud sig- Rr spk out+ Rr spk out- S210 S333 Seek dn Seek up Serial data Source dn Source up Steering wheel audio controls Tan Underhood fuse block (at left side of engine compartment) Veh speed sen Vehicle communication interface module (right side of dash) Voice Voice lo ref Voice low ref voice low ref Voice signal Vol dn Vol up Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (2 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (2 of 3) for Chevrolet Avalanche 2003 1500: 48 A10 A11 A12 Audio amplifier B10 B11 B12 Bare Computer data lines system Drain wire Ground Hot at all times L spk out+ L spk out- Left "d" pillar (except escalade ext) Left front door speaker Left front tweeter speaker Left i/p fuse block (on lower left side g of dash) Left rear door speaker Left subwoofer Lf aud sig+ Lf aud sig- Lf spkr out+ Lf spkr out- Lr spkr out+ Lr spkr out- Mic sup volt Noise compensation microphone R spk out+ R spk out- Radio fuse 15a Red Rf aud sig+ Rf aud sig- Rf spkr out+ Rf spkr out- Right "d" pillar (except escalade ext) Right front door speaker Right front tweeter speaker Right i/p fuse block (on lower right side b of dash) Right rear door speaker Right subwoofer Rr spkr out+ Rr spkr out- Serial data Subwoofer speaker Tan Underhood fuse block (at left side of engine compartment) Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (3 of 3) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (3 of 3) for Chevrolet Avalanche 2003 1500: 28 (near left "a" pillar) g203 Antenna Aud out - Bare Cd player remote playback device (if equipped) Coax Com aud sig Computer data lines system Data lines Digital radio antenna Digital radio receiver (if equipped) Dimming Drain wire Ground Hot at all times I/p relay block (below lower left side of dash) Info fuse 15a Interior lights system Lf aud + Lt aud sig Rear seat entertainment assembly (if equipped) Rt aud + Rt aud sig S335 Serial data Splice pack sp250 (left end of dash) Tan Underhood fuse block (at left side of engine compartment) Premium Sound Radio Wiring Diagram, with CD (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with CD (1 of 2) for Chevrolet Avalanche 2003 1500: 77 (behind left i/p fuse block) sp205 (in console harness) A10 A11 A12 Am antenna Ant enable sig Antenna B10 B11 B12 B31 Bare Bcm class 2 serial data Body control module C201 Cell voice sig Coax Common aud sig Computer data lines Computer data lines system Drain wire Enable sig Engine controls system Escalade ext Except excalade ext Fm antenna Fm comp sig Fm impedance matching module (in right rear quarter glass) G203 (near left "a" pillar) Ground Hot at all times I/p fuse block (below lower left side of dash) Inflatable restraint steering wheel module coil Left aud sig Lf spk out+ Lf spk out- Lr aud sig+ Lr aud sig- Lr spk out + Lr spk out - Nca Out to radio Pnk Prog Radio Radio antenna module (above right rear quarter glass, in headliner) Radio fuse 15a Rear seat audio controller (on rear of center console) Red Remote radio control signal Rf spk out + Rf spk out - Right aud sig Rr aud sig+ Rr aud sig- Rr spk out+ Rr spk out- S210 S333 Seek dn Seek up Serial data Source dn Source up Steering wheel audio controls System Tan Underhood fuse block (at left side of engine compartment) Veh speed sen Vehicle communication interface module (right side of dash) Voice Voice lo ref Voice low ref Voice signal Vol dn Vol up Premium Sound Radio Wiring Diagram, with CD (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with CD (2 of 2) for Chevrolet Avalanche 2003 1500: 56 A10 A11 A12 Aud out - Audio amplifier B10 B11 B12 Bare Cd player remote playback device Computer data lines system Dimming Drain wire Ground Hot at all times Info fuse 15a Interior lights system L spk out+ L spk out- Left "d" pillar (except escalade ext) Left front door speaker Left front tweeter speaker Left i/p fuse block (on lower left side g of dash) Left rear door speaker Left subwoofer Lf aud + Lf aud sig+ Lf aud sig- Lf spkr out+ Lf spkr out- Lr spkr out+ Lr spkr out- Mic sup volt Noise compensation microphone R spk out+ R spk out- Radio fuse 15a Red Rf aud sig+ Rf aud sig- Rf spkr out+ Rf spkr out- Right "d" pillar (except escalade ext) Right front door speaker Right front tweeter speaker Right i/p fuse block (on lower right side b of dash) Right rear door speaker Right subwoofer Rr spkr out+ Rr spkr out- Rt aud + S335 Serial data Subwoofer speaker Tan Underhood fuse block (at left side of engine compartment) Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (1 of 2) for Chevrolet Avalanche 2003 1500: 75 (behind left i/p fuse block) sp205 (in console harness) A10 A11 A12 Am antenna Ant enable sig Antenna B10 B11 B12 B31 Bare Bcm class 2 serial data Body control module C201 Cell voice sig Coax Common aud sig Computer data lines system Drain wire Enable sig Engine controls system Escalade ext Except excalade ext Fm antenna Fm comp sig Fm impedance matching module (in right rear quarter glass) G203 (near left "a" pillar) Ground Hot at all times I/p fuse block (below lower left side of dash) Inflatable restraint steering wheel module coil Left aud sig Lf spk out+ Lf spk out- Lr aud sig+ Lr aud sig- Lr spk out + Lr spk out - Nca Out to radio Pnk Prog Radio Radio antenna module (above right rear quarter glass, in headliner) Radio fuse 15a Rear seat audio controller (on rear of center console) Red Remote radio control signal Rf spk out + Rf spk out - Right aud sig Rr aud sig+ Rr aud sig- Rr spk out+ Rr spk out- S210 S333 Seek dn Seek up Serial data Source dn Source up Steering wheel audio controls Tan Underhood fuse block (at left side of engine compartment) Veh speed sen Vehicle communication interface module (right side of dash) Voice Voice lo ref Voice low ref Voice signal Vol dn Vol up Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (2 of 2) for Chevrolet Avalanche 2003 1500: 55 A10 A11 A12 Antenna Aud out - Audio amplifier B10 B11 B12 Bare Coax Computer data lines system Digital radio antenna Digital radio receiver Drain wire Ground Hot at all times L spk out+ L spk out- Left "d" pillar (except escalade ext) Left front door speaker Left front tweeter speaker Left i/p fuse block (on lower left side g of dash) Left rear door speaker Left subwoofer Lf aud + Lf aud sig+ Lf aud sig- Lf spkr out+ Lf spkr out- Lr spkr out+ Lr spkr out- Mic sup volt Noise compensation microphone R spk out+ R spk out- Radio fuse 15a Red Rf aud sig+ Rf aud sig- Rf spkr out+ Rf spkr out- Right "d" pillar (except escalade ext) Right front door speaker Right front tweeter speaker Right i/p fuse block (on lower right side b of dash) Right rear door speaker Right subwoofer Rr spkr out+ Rr spkr out- Rt aud + Serial data Subwoofer speaker Tan Underhood fuse block (at left side of engine compartment) Premium Sound Radio Wiring Diagram, with Rear Entertainment (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with Rear Entertainment (1 of 2) for Chevrolet Avalanche 2003 1500: 75 (behind left i/p fuse block) sp205 (in console harness) A10 A11 A12 Am antenna Ant enable sig Antenna B10 B11 B12 B31 Bare Bcm class 2 serial data Body control module C201 Cell voice sig Coax Common aud sig Computer data lines system Drain wire Enable sig Engine controls system Escalade ext Except excalade ext Fm antenna Fm comp sig Fm impedance matching module (in right rear quarter glass) G203 (near left "a" pillar) Ground Hot at all times I/p fuse block (below lower left side of dash) Inflatable restraint steering wheel module coil Left aud sig Lf spk out+ Lf spk out- Lr aud sig+ Lr aud sig- Lr spk out + Lr spk out - Nca Out to radio Pnk Prog Radio Radio antenna module (above right rear quarter glass, in headliner) Radio fuse 15a Rear seat audio controller (on rear of center console) Red Remote radio control signal Rf spk out + Rf spk out - Right aud sig Rr aud sig+ Rr aud sig- Rr spk out+ Rr spk out- S210 S333 Seek dn Seek up Serial data Source dn Source up Steering wheel audio controls Tan Underhood fuse block (at left side of engine compartment) Veh speed sen Vehicle communication interface module (right side of dash) Voice Voice lo ref Voice low ref Voice signal Vol dn Vol up Premium Sound Radio Wiring Diagram, with Rear Entertainment (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Premium Sound Radio Wiring Diagram, with Rear Entertainment (2 of 2) for Chevrolet Avalanche 2003 1500: 55 A10 A11 A12 Audio amplifier B10 B11 B12 Bare Com aud sig Computer data lines system Data lines Drain wire Ground Hot at all times Info fuse 15a L spk out+ L spk out- Left "d" pillar (except escalade ext) Left front door speaker Left front tweeter speaker Left i/p fuse block (on lower left side g of dash) Left rear door speaker Left subwoofer Lf aud sig+ Lf aud sig- Lf spkr out+ Lf spkr out- Lr spkr out+ Lr spkr out- Lt aud sig Mic sup volt Noise compensation microphone R spk out+ R spk out- Radio fuse 15a Rear seat entertainment assembly Red Rf aud sig+ Rf aud sig- Rf spkr out+ Rf spkr out- Right "d" pillar (except escalade ext) Right front door speaker Right front tweeter speaker Right i/p fuse block (on lower right side b of dash) Right rear door speaker Right subwoofer Rr spkr out+ Rr spkr out- Rt aud sig S335 Serial data Subwoofer speaker Tan Underhood fuse block (at left side of engine compartment)
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Shift Interlock Wiring Diagram for Chevrolet Avalanche 2003 1500: 10 A/t shift lock control solenoid (on steering column) B/u lp fuse 20a Btsi fuse 10a G200 behind right side of dash, near right "a" pillar) Hot in run or start Park/ neutral position switch (left side of transmission) Pnk S202 Stoplamp switch (top of brake pedal) Underhood fuse block (at left side of engine compartment)
STARTING/CHARGING Charging Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Charging Wiring Diagram for Chevrolet Avalanche 2003 1500: 36 (at left side of eng compt, near battery) underhood junction block (not used) (w/ sba only) B12 Battery Charge indicator control Computer data lines Fusible link G100 (on left front of body mount) G105 (on lower left front of eng block) G106 (on right front of eng block) G203 (near left "a" pillar) Generator Generator field duty cycle signal Ground Hot in run & start I/p relay block (under left side of dash, near kick panel) Ign 1 volt Ign e fuse 10a Instrument panel cluster Ipc class 2 serial data Left battery Logig Pnk Power distribution system Powertrain control module (pcm) (at left side of eng compt) Red Right battery Seo ign fuse 10a Serial data class 2 Splice pack sp205 (in i/p harn) Starter solenoid Underhood fuse block (at left side of eng compt, near battery) W/ seo W/dual batteries W/o seo Starting Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Starting Wiring Diagram for Chevrolet Avalanche 2003 1500: 42 (not used) Acc C1 a11 C1 a3 C1 a9 C1 b12 C2 a7 C2 d11 C2 e C2 f3 C2 f9 C2 g Crank fuse 10a Crank sign D12 F11 G100 (on left front of body mount) G105 (on lower left front of eng block) Ign a fuse 40a Ign b fuse 40a Ign e fuse 10a Ignition switch Left battery Lock Off Park/neutral position switch (on left side of transmission) Pnk Power distribution system Powertrain control module (pcm) (at left front side of eng compt) Red Run Run off Start Starter enable relay ctrl Starter motor Starter relay Starter solenoid Starting/ charging system (fusible link) Starting/ charging system (right battery) (w/ dual batteries) Underhood fuse block (at left side of eng compt, near battery) Underhood fuse block (left side of eng compt, near battery) Underhood junction block (at left side of eng compt, near battery)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 36 (mounted inside driver door, behind trim panel) left inflatable restraint side impact sensor Body relay block (under left side of dash, near kick panel) C10 Class 2 serial data Control Dk gnr G304 (under right front seat) Ground High control Hot in run or start Igniton 1 volt Inflatable restraint i/p module (behind right side of dash) Inflatable restraint sensing/diagnostic module (under left front seat) Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil Left inflatable restraint front end sensor (on left front of vehicle, by core supprt) Left inflatable restraint side impact module Left signal Low control Low reference Nca Pnk Red Right inflatable restraint front end sensor (on right front of vehicle, by core supprt) Right inflatable restraint side impact module Right inflatable restraint side impact sensor (mounted inside passenger door, behind trim panel) Right signal Shorting bar Signal Sir fuse 15a Stage 1 Stage 2 Tan Twisted pair wires Underhood fuse block (at left side of eng compt, near battery) Voltage Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 36 Air bag Anti-theft system Body relay block (under left side of dash, near kick panel) C10 Class 2 serial data Data link connector (under left side of dash, below steering column) Driver seat belt switch Front passenger seat belt switch G304 (under right front seat) Ground I/p mod disable sw sig Ign Ignition 1 voltage Inflatable restraint passenger air bag on/off indicator Inflatable restraint passenger presence system (pps) module (front passenger seat) Inflatable restraint passenger presence system sensor Inflatable restraint passenger seat belt tension retractor sensor Inside rearview mirror instrument Instrument panel cluster Ipc class 2 serial data Left inflatable restraint seat position switch Off Pass air bag off ind ctrl Pass air bag on ind ctrl Pass seat belt tens 5v ref Pass seat belt tens lo ref Pass seat belt tens sig Pnk Pps sens 5v ref Pps sens lo ref Pps sens sig Red Right inflatable restraint seat position switch Splice pack sp205 (behind left i/p fuse block) Splice pack sp206 (on left "b" pillar) Tan
TRANSMISSION Transfer Case Wiring Diagram, 2-Speed Automatic for Chevrolet Avalanche 2003 1500 List of elements for Transfer Case Wiring Diagram, 2-Speed Automatic for Chevrolet Avalanche 2003 1500: 66 (behind right side of dash, near right "a" pillar) (left front of engine compt) powertrain control module (on left front body mount) g110 +5v ref 2-hi ind 2wd 4 hi 4 lo 4-hi ind 4-lo ind 4wd fuse 15a 4wd indicator lamp 4wd lo sig 4wd sw sig Awd Awd ind Axle ctrl Axle sw sig Battery Body relay block (under c1 Brake control Class ii data Ctrl Data link connector (under left side of dash) Encoder Encoder low Encoder sig Except seo Front axle actuator Front propshaft speed sensor Ft shaft hi Ft shaft lo G200 G203 (behind left side of dash, near left "a" pillar) Gnd Ground Hot at all times Hot in run Hot in run or start Ign e fuse 10a Illumination Instrument panel cluster Interior lights system Left i/p fuse block (lower left side of dash) Left side of dash) Lock sol ctrl Logic Motor ctrl a Motor ctrl b Nca Neutral ind Pnk Rear propshaft speed sensor Red Rr shaft hi Rr shaft lo Seo Seo ign fuse 10a Shift motor Splice pack sp205 (left side of dash) Tan Transfer case encoder motor Transfer case shift control module (left side of i/p area, behind knee bolster, above parking brake assy) Transfer case shift control switch Trec fuse 30a Underhood fuse block (left side of engine compt, near battery)
5.3L VIN T 5.3L VIN T, A/T Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for 5.3L VIN T, A/T Wiring Diagram for Chevrolet Avalanche 2003 1500: 85 (behind left side of dash) g203 (left rear of engine compt) throttle actuator control module (not used) (right rear of engine block) g103 1-2 shift solenoid 1-2 ss 2-3 shift solenoid 2-3 ss 3-2 shift solenoid 3-2 ss 4wd circuit (transfer case & front axle switch) 4wd low A/t fluid pressure manual valve position switch Automatic transmission (4l60-e) B10 B11 B12 Body control module (below steering column) Brake fuse 10a Brk sw C12 Cls 2 data D3, d2 D4, d2 Data link connector (below steering column) E11 Ect sig Engine controls system Engine coolant temperature sensor (front of left cylinder head) Except seo Fluid temp sensor Frt axle sw Gnd Hot at all times Hot in run Hot in run & start Hot in run, acc & start I/p relay block (below left side of dash) Ign Ign0 fuse 10a Instrument cluster Instrument panel cluster (ipc) Ipc/dic fuse 10a Left i/p fuse block (lower left side of dash) Lo ref Malfunction indicator lamp Mil ctrl Park/neutral position switch (left side of transmission) Pc sol hi Pc sol lo Pcm 1 fuse 15a Pcm b fuse 20a Pnk Powertrain control module (left front of engine compt) Press ctrl solenoid Prnd a Prnd b Prnd c Prnd p Range b Range c Red Red a Rev, lo S103 S312 Sens gnd Seo Seo b1 fuse 15a Serial data Splice pack sp205 (in dash harness) Stoplight switch (top of brake pedal bracket) Tan Tcc pwm Tcc pwm solenoid Tcc sol Tcc solenoid Tft sens sig Tow/haul switch Trans rng a Underhood fuse block (left side of engine c2 compt, near the battery) Underhood fuse block (left side of engine compt, near battery) Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case) Vss hi Vss lo
8.1L VIN G 8.1L VIN G, A/T Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for 8.1L VIN G, A/T Wiring Diagram for Chevrolet Avalanche 2003 1500: 84 (behind left side of dash) g203 (left rear of engine compt) throttle actuator control module (not used) (right rear of engine block) g103 1-2 shift solenoid 1-2 ss 2-3 shift solenoid 2-3 ss 4wd circuit (transfer case & front axle switch) 4wd low A/t fluid pressure manual valve position switch At iss hi At iss lo Automatic transmission (4l80-e) Automatic transmission input shaft speed sensor (in transmission) B10 B11 B12 Body control module (below steering column) Brake fuse 10a Brk sw C12 Cls 2 data D3, d2 D4, d2 Data link connector (below steering column) E11 Ect sig Engine controls system Engine coolant temperature sensor (front of left cylinder head) Except seo Fluid temp sensor Frt axle sw Gnd Hot at all times Hot in run Hot in run & start Hot in run, acc & start I/p relay block (below left side of dash) Ign Ign0 fuse 10a Instrument cluster Instrument panel cluster (ipc) Ipc/dic fuse 10a Left i/p fuse block (lower left side of dash) Lo ref Malfunction indicator lamp Mil ctrl Park/neutral position switch (left side of transmission) Pc sol hi Pc sol lo Pcm 1 fuse 15a Pcm b fuse 20a Pnk Powertrain control module (left front of engine compt) Press ctrl solenoid Prnd a Prnd b Prnd c Prnd p Range b Range c Red Red a Rev, lo S103 S312 Sens gnd Seo Seo b1 fuse 15a Serial data Splice pack sp205 (in dash harness) Stoplight switch (top of brake pedal bracket) Tan Tcc pwm Tcc pwm solenoid Tft sens sig Tow/haul switch Trans rng a Underhood fuse block (left side of engine c2 compt, near the battery) Underhood fuse block (left side of engine compt, near battery) Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case) Vss hi Vss lo
WARNING SYSTEMS Warning Systems Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Warning Systems Wiring Diagram (1 of 2) for Chevrolet Avalanche 2003 1500: 57 (near left "a" pillar) g203 (on left "b" pillar) g305 (on right "b" pillar) g306 5v reference A12 Accessory voltage Anl/drl defeat Auto B11 B12 Battery Body (i/p) relay block (under left side of dash, near kick panel) Body control module (bcm) (on lower left side of dash, below steering column) D12 Dimmer low reference Dimming input E11 E12 G203 (near left "a" pillar) Ground Ground distribution system Head Headlamp dimmer switch Headlamp switch Headlamps on signal Hot at all times Hot in acc & run Hot in acc, run & start Hot in run & start Ignition 0 voltage Ignition 1 voltage Ignition key alarm switch Key in ignition switch Left i/p fuse block (behind lower left side of dash, near kick panel) Left rear door ajar sw Left rear mini wedge (door jamb switch) Liftgate ajar switch sig Park Park brake sw signal Park brake switch (part of park brake assembly) Park lamp on signal Pnk Power distribution system Right rear door ajar sw Right rear mini wedge (door jamb switch) S212 (in i/p harness) S217 (in steering column harness) Serial data Tan Tbc 2a fuse 15a Tbc 2b fuse 15a Tbc 2c fuse 15a Tbc accy fuse 10a Tbc batt fuse 10a Tbc ign 0 fuse 10a Tbc ign 1 fuse 10a Underhood fuse block (at left side of engine compartment, near battery) Warning Systems Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500 List of elements for Warning Systems Wiring Diagram (2 of 2) for Chevrolet Avalanche 2003 1500: 45 (closed w/door open) (in liftgate harness) s910 Computer data lines system Data link connector (dlc) (partial) (under left side of dash, below steering column) Door ajar switch Driver door module (ddm) (behind left front door trim panel, near handle) Driver mini wedge (door jamb switch) Driver seat belt switch Exterior lights system Front passenger door module (fpdm) (behind right front door trim, near handle) G410 Ground distribution system Ign Inflatable restraint sensing & diagnostic module (sdm) (under left front seat) Instrument panel cluster (ipc) Left door ajar sw Left door contact plate (body) Left i/p fuse block (on lower left side of dash) Left liftgate ajar switch Left seat belt sw Left turn Liftglass ajar switch Logic Low reference Passenger mini wedge (door jamb switch) Pnk Powertrain control module (pcm) (at left front side of engine compartment) Radio Right cargo door ajar switch Right door contact plate (body) Right door contact plate (door) Right i/p fuse block (on lower right side of dash) Right liftgate ajar switch Right turn S911 (in liftgate harness) Seat belt Serial data Splice pack sp205 (behind left i/p fuse block) Splice pack sp206 (on left "b" pillar) Splice pack sp410 (behind right rear quarterpanel) Tan W/anti-theft system W/cargo doors W/o cargo doors (liftgate) Wiper washer system
WIPER/WASHER Front Washer/Wiper Wiring Diagram for Chevrolet Avalanche 2003 1500 List of elements for Front Washer/Wiper Wiring Diagram for Chevrolet Avalanche 2003 1500: 30 Accessory voltage G100 (on left side of radiator support) G200 (behind right side of dash) G203 (behind left side of dash) Ground Hot at all times Hot in run and acc Left i/p fuse block (lower left side of dash) Lsd Mist Off Pnk Pulse Red S100 S202 S217 Tan Turn signal multi- function switch Underhood fuse block (on left side of engine compt) W/s wash fuse 15a W/s wash relay W/s wiper fuse 25a Wash Windshield washer fluid pump (on washer fluid reservoir) Windshield washer relay cntrl Windshield wiper high signal Windshield wiper motor module (under windshield cowl) Windshield wiper switch signal Windshield wiper/ washer switch
