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1 25a S317 Seats circuit breaker 8 30a Serial data Tan POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram, Long Wheel Base for GMC Envoy XL 2003 List of elements for Power Top/Sunroof Wiring Diagram, Long Wheel Base for GMC Envoy XL 2003: A12 A12 hot with rap energized c3 Battery Body control module (bcm) (beneath left rear seat, on rear fuse block) Close G302 (left "b" pillar) G306 (rear of left rear door) Gnd Hot at all times Nca Open Rap relay 22 Rear fuse block (below left rear seat) S302 Sun roof module (above headliner, at rear of sun roof assembly) Sun roof motor Sun roof switch Sunroof fuse 28 20a Vent wdo fuse 20 20a POWER WINDOWS Power Windows Wiring Diagram for GMC Envoy XL 2003 List of elements for Power Windows Wiring Diagram for GMC Envoy XL 2003: (body harn, 5-15 cm from breakout for tan right front seat) s347 (lower left "b" pillar) A6 nca B5 nca B6 nca B7 nca B8 nca B9 nca Battery Body computer module (bcm) (beneath left rear seat, on rear fuse block) Class 2 data Ddm fuse 10 10a Down Down input Down output Down signal output Driver door module (below drivers door switch panel) Driver memory seat module Drivers window motor Drivers window switch Front pass window switch Front passenger door module (below front passenger door switch panel) Front passenger window motor G302 G303 (lower right "b" pillar) Ground Hot at all times Left rear window motor Left rear window switch Lockout indicator Lockout switch Lr down sig Lr lockout control Lr up sig Lt door circuit breaker 2 25a Motor down control Motor up control Passenger memory seat module Rear fuse block (below left rear seat) Right rear window control Right rear window motor Right rear window switch Rr down sig Rr lockout control Rr up sig Rt door circuit breaker 1 25a Splice pack sp205 (behind left side of dash) Splice pack sp306 (body harn, under right rear seat) Switch power Switch pwr Tan Up input Up output Up signal output W/ memory seats Window dn Window up Rear Quarter Windows Wiring Diagram, Long Wheel Base for GMC Envoy XL 2003 List of elements for Rear Quarter Windows Wiring Diagram, Long Wheel Base for GMC Envoy XL 2003: A12 Body control module (bcm) (below left rear seat, on rear fuse block) Close G302 (lower left "b" pillar) G306 (rear of left rear door) Hot at all times Left quarter glass switch Nca Open Rap relay 22 Rear fuse block (below left rear seat) Right quarter glass switch S301 S302 Vent wdo fuse 20a RADIO Base Radio Wiring Diagram, with Rear Seat Audio for GMC Envoy XL 2003 List of elements for Base Radio Wiring Diagram, with Rear Seat Audio for GMC Envoy XL 2003: (near the right front of the lower console) g201 A/c system A10 A11 A12 A13 A14 A15 A16 Am/fm Antenna Auxiliary hvac control module B10 B11 B12 B13 B14 B15 Body control module (beneath left rear seat, on rear fuse block) G102 (left side of underhood compartment, near rear of underhood fuse block) Ground Hot at all times Hvac b fuse 36 10a Inflatable restraint steering wheel module coil Lf door speaker Lf door tweeter speaker Lf out + Lf out - Lr door speaker Lr low level audio sig + Lr low level audio sig - Lr out + Lr out - Lr speaker out + Lr speaker out - Mode Nca Pnk Radio Radio control signal Radio fuse 41 15a Rear fuse block (below left rear seat) Rf door speaker Rf door tweeter speaker Rf out + Rf out - Rr door speaker Rr low level audio sig + Rr low level audio sig - Rr out + Rr out - Rr speaker out + Rr speaker out - S202 S307 Serial data Sp201 (at lower right front of lower console) Sp205 (below left of dash, near headlamp switch connector) Steering wheel controls assembly Tan Volume down Volume up Volume/ am/fm switch Wiper/ washer system Base Radio Wiring Diagram, without Rear Seat Audio for GMC Envoy XL 2003 List of elements for Base Radio Wiring Diagram, without Rear Seat Audio for GMC Envoy XL 2003: A/c system A10 A11 A12 A13 A14 A15 A16 Am/fm Antenna B10 B11 B12 B13 B14 B15 Body control module (beneath left rear seat, on rear fuse block) G102 (left side of underhood compartment, near rear of underhood fuse block) Ground Hot at all times Inflatable restraint steering wheel module coil Lf door speaker Lf door tweeter speaker Lf out + Lf out - Lr door speaker Lr out + Lr out - Mode Nca Pnk Radio Radio control signal Radio fuse 41 15a Rear fuse block (below left rear seat) Rf door speaker Rf door tweeter speaker Rf out + Rf out - Rr door speaker Rr out + Rr out - Serial data Sp205 (behind left of dash, near headlamp switch) Steering wheel controls assembly Tan Volume down Volume up Volume/ am/fm switch Wiper/ washer system DVD Player/Voice Recorder Wiring Diagram for GMC Envoy XL 2003 List of elements for DVD Player/Voice Recorder Wiring Diagram for GMC Envoy XL 2003: C3 f1 Digital video disc player E1 c3 G302 (on lower left "b" pillar) Garage door opener Hot at all times Hot in accessory or run Oh batt/ onstar fuse 27 10a Outside moisture sensor Rain fuse 29 10a Rear fuse block (below left rear seat) S322 S340 (overhead console harn) S341 S343 Voice recorder W/ garage door opener w/o rear entertainment W/ rear entertainment and garage door opener W/ rear entertainment w/ moisture sensor wipers W/ rear entertainment w/o garage door opener W/ rear entertainment w/o moisture sensor wipers W/o rear entertainment w/ moisture sensor wipers Premium Sound Radio Wiring Diagram (1 of 2) for GMC Envoy XL 2003 List of elements for Premium Sound Radio Wiring Diagram (1 of 2) for GMC Envoy XL 2003: (ground splice pack, near the right front of the lower console) g201 (short wheel base) A/c system A10 A11 A12 A13 A14 A15 A16 Am/fm Antenna B10 B11 B12 B13 B14 B15 B16 (long wheel base) Bare Body control module (beneath rear seat, on rear fuse block) G102 (left side of underhood compartment, near rear of underhood fuse block) Ground Hot at all times Hvac b fuse 36 10a Inflatable restraint steering wheel module coil Lf out + Lf out - Lr low level audio sig + Lr low level audio sig - Lr out + Lr out - Mode Nca Pnk Radio Radio control signal Radio fuse 41 15a Rear fuse block (beneath left rear seat) Rf out + Rf out - Rr low level audio sig + Rr low level audio sig - Rr out + Rr out - Rsa/auxiliary hvac control module S202 S307 Serial data Sp201 (at lower right front of lower console) Sp205 (below left of dash, near headlamp switch connector) Sp306 (body harn, under right rear seat) Steering wheel controls assembly Tan Volume down Volume up Volume/ am/fm switch Wiper/ washer system Premium Sound Radio Wiring Diagram (2 of 2) for GMC Envoy XL 2003 List of elements for Premium Sound Radio Wiring Diagram (2 of 2) for GMC Envoy XL 2003: A a A10 A11 A12 Amp class 2 serial data Amp fuse 11 20a Audio amplifier (behind right side panel of the rear compartment) B10 B11 B12 Bare Drain wire G401 (on lower left "d" pillar) Ground Hot at all times Left front door speaker Left front i/p speaker Left rear door speaker Lf low lev aud sig + Lf low lev aud sig - Lf mid spkr out + Lf mid spkr out - Lf spkr out + Lf spkr out - Lr spkr out + Lr spkr out - Noise reduction microphone (in upper console) Rear fuse block (beneath left rear seat) Rf low lev aud sig + Rf low lev aud sig - Rf mid spkr out + Rf mid spkr out - Rf spkr out + Rf spkr out - Right front door speaker Right front i/p speaker Right rear door speaker Rr spkr out + Rr spkr out - S401 Tan SHIFT INTERLOCK Ignition Lock Solenoid Wiring Diagram for GMC Envoy XL 2003 List of elements for Ignition Lock Solenoid Wiring Diagram for GMC Envoy XL 2003: (closed in park) A/t shift lock actuator G201 Hot in acc, run & start Ign 0 fuse 47 10a Ignition lock cylinder control actuator Pnk Rear fuse block (below left rear seat) S320 Sp201 (right front of lower console) Shift Interlock Wiring Diagram for GMC Envoy XL 2003 List of elements for Shift Interlock Wiring Diagram for GMC Envoy XL 2003: (4.2l) (5.3l) A/t shift lock actuator A/t shift lock control solenoid Backup fuse 27 15a Btsi fuse 25 10a E10 G201 Hot in run & start Park lock solenoid Park/ neutral position (pnp) switch (on left side of transmission) Pnk S211 Sp201 (right front of lower console) Stoplamp switch (above brake pedal, on bracket) Underhood fuse block (on left side of engine compt) STARTING/CHARGING Charging Wiring Diagram for GMC Envoy XL 2003 List of elements for Charging Wiring Diagram for GMC Envoy XL 2003: (4.2l) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine) powertrain control module (pcm) (5.3l) 4.2l 5.3l Battery Battery voltage Charge indicator Class 2 Class 2 data Field duty cycle sig Fusible link (8 ga- red) G101 (left side G106 (left front wheel well) G110 (on lower left side of engine) Generator Generator on signal Hot at all times Instrument panel cluster (ipc) Ipc/dic fuse 24 10a Not used Of engine compt) Red S110 Splice pack sp205 (behind left side of i/p) Starter solenoid Under- hood fuse block (on left side of engine compt) Starting Wiring Diagram for GMC Envoy XL 2003 List of elements for Starting Wiring Diagram for GMC Envoy XL 2003: (4.2l) (5.3l) 4.2l 4.2l only 5.3l A10 Acc Batt Battery Crank fuse 17 10a Crank sig req Crank volt F10 F11 Fusible link (8 ga- red) G101 (left side of engine compt) G106 (left front wheel well) G110 (on lower left side of engine) Generator Hot at run and start Ign a fuse 34 40a Ign e fuse 22 10a Ignition switch Lock Off P/n Park/ neutral position (pnp) switch (on lower left side of transmision) Pnk Powertrain control module (pcm) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine) Red Run S110 Start Starter Starter relay 47 Starter rly Under- hood fuse block (left side of engine compt) SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram for GMC Envoy XL 2003 List of elements for Supplemental Restraints Wiring Diagram for GMC Envoy XL 2003: (near the rear of underhood fuse block) g102 (on lower left b-pillar) g302 A10 A11 A12 A13 A14 A15 A16 A17 A18 Air bag indicator Anti-theft system Bar C1 a1 Case ground Class 2 serial data Data link connector (dlc) (partial) (on bottom left side of dash) Driver seat Ground High control Hot in on & start Ign Ignition Inflatable restraint i/p module Inflatable restraint sensing & diagnostic module (below rear of center console) Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil Instrument panel cluster (ipc) Left electronic frontal sensor (efs) (at left rear of front frame crossmenber) Left front inflatable restraint side impact module (in left front seat back) Left inflatable restraint side impact sensor Left seat belt switch Low control Low reference Nca Pnk Right electronic frontal sensor (efs) (at right rear of front frame crossmenber) Right front inflatable restraint side impact module (in right front seat back) Right inflatable restraint side impact sensor S232 (w/immobilizer) (overhead console harn) Shorting Shorting bar Signal Solid state Splice pack sp205 (behind left of dash, near headlamp switch conn) Srs fuse 10a Stage 1 Stage 2 Tan Underhood fuse block (on left side of eng compt) Voltage TRANSMISSION Transfer Case Wiring Diagram, 2 Speed for GMC Envoy XL 2003 List of elements for Transfer Case Wiring Diagram, 2 Speed for GMC Envoy XL 2003: (below left side of dash) data link connector (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout) (on lower left side of engine) +5v ref +8v ref 1.1k 2 hi 2 hi ind 2.2k 2wd 4 hi 4 hi ind 4 lo 4 lo ind 4.2l 4wd fuse 15a 4wd lo sig 5.1k 5.3l Afwd Afwd ind Atc fuse 25a Axle act Axle sw B11 Battery Brake C2 a11 Class 2 data E11 E5 c3 Encoder Encoder gnd Encoder p Front axle actuator (on inner flange of front axle) Front sig hi Front sig lo G102 (left side of underhood compt, near rear of underhood fuse block) G107 G201 Ground Hot at all times Hot in run Hot in run or start Ing e fuse 10a Instrument panel cluster (ipc) Interior lights system Lock sol Logic Motor Motor ctrl a Motor ctrl b Neut Neutral Neutral ind Pnk Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine) Propshaft speed sensor (left front) (left front of transfer case) Propshaft speed sensor (right rear) (right rear of transfer case) Rear fuse block (below left rear seat) Rear sig hi Rear sig lo Red S202 S232 S239 Service 4wd/ awd Sp201 (at lower right front of lower console) Splice pack sp205 (behind left side of dash) Sw sig Tan Tcc/brake switch, traction control switch, multi-function switch, headlamp leveling switch, rearview mirror Theft deterent control module Transfer case encoder motor Transfer case shift control module (behind lower left side of dash) Transfer case shift control switch Under- hood fuse block (left side of engine compt) Underhood fuse block (left side of engine compt) W/ immobilizer Transfer Case Wiring Diagram, Single Speed for GMC Envoy XL 2003 List of elements for Transfer Case Wiring Diagram, Single Speed for GMC Envoy XL 2003: (behind left side of dash) splice pack sp205 (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout) (left side of underhood compt, near rear of underhood fuse block) +5v ref A11 Atc fuse 25a B6 c2 Battery Class 2 data Data link connector (on bottom left side of dash) Encoder Encoder gnd Encoder sig Front sig hi Front sig lo G102 G201 Ground Hot at all times Hot in run or start Ing e fuse 10a Instrument panel cluster (ipc) Logic Motor Motor ctrl a Motor ctrl b Pnk Propshaft speed sensor (left front) (left front of transfer case) Propshaft speed sensor (right rear) (right rear of transfer case) Rear sig hi Rear sig lo Red S202 S232 S239 Service 4wd/ awd Sp201 (right front of lower console) Stop lamp switch, traction control switch, multi-function switch, headlamp leveling switch, inside rearview mirror, inverting driver module (olds) Theft deterent control module Transfer case encoder motor Transfer case shift control module (behind lower left side of dash) Underhood fuse block (left side of engine compt) W/ immobilizer 4.2L VIN S 4.2L VIN S, A/T Wiring Diagram for GMC Envoy XL 2003 List of elements for 4.2L VIN S, A/T Wiring Diagram for GMC Envoy XL 2003: (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout) 1-2 shift red solenoid valve 2-3 shift red solenoid valve 3-2 shift red solenoid valve 4wd circuit (w/ 2-spd transfer case) 4wd lo A2 c1 Accelerator pedal position sensor (on bracket, above accelerator pedal) App 1 +5v App 1 lo App 1 sig App 2 +5v App 2 lo App 2 sig Automatic trans- mission fluid pressure manual valve position switch Automatic transmission Automatic transmission fluid temperature sensor Automatic transmission shift lock actuator Battery Body control module (bcm) (beneath left rear seat) C2 a7 Class 2 data D2 c1 D2 sw D3 sw D4 sw Data link connector (below left side of dash) Down (3-2) E3 c2 Ect ref Ect sig Engine coolant temperature sensor (left front of engine block, near generator) Etc fuse 10a F14 G108 (lower left side of engine) Ground Hot at all times Hot in accy, run or start Hot in run or start Ign 0 fuse 10a Ignitioin 1 Ignition Ignition 1 Ing e fuse 10a Instrument panel cluster (ipc) Lo sw Mil ind Park/neutral position switch (left side of transmission) Pcm 1 fuse 15a Pcm b fuse 20a Pcs sol (hi) Pcs sol (lo) Pnk Powertrain control module (upper left side of engine) Pressure control solenoid valve Prndl a in Prndl b in Prndl c in Prndl p in Rear fuse block (below left rear seat) Red Rev sw S232 S239 S320 Service engine soon Solenoid Splice pack sp205 (behind left side of dash) Ss a (1-2) Ss b (2-3) Stop lamp switch, traction control switch, multi-function switch, headlamp leveling switch, inside rearview mirror, inverting driver module (olds) Stoplamp in Tan Tcc Tcc pmw red Tcc pwm Tcc red Tfp sw a Tfp sw b Tfp sw c Tft ref Tft sig Theft deterent control module Throttle actuator control motor (on throttle body) Tp 1 +5v Tp 1 lo Tp 1 sig Tp 2 +5v Tp 2 lo Tp 2 sig Trailer brake control unit Underhood fuse block (left side of engine compt) Veh stop fuse 34 15a Vehicle speed sensor (4wd/awd: left rear of transfer case) (2wd: left rear of transmission) Vss (hi) Vss (lo) W/ immob W/ immobilizer W/o immob W/o immobilizer 5.3L VIN P 5.3L VIN P, A/T Wiring Diagram for GMC Envoy XL 2003 List of elements for 5.3L VIN P, A/T Wiring Diagram for GMC Envoy XL 2003: (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout) 1-2 shift red solenoid valve 2-3 shift red solenoid valve 3-2 shift red solenoid valve 4wd circuit (w/ 2-spd transfer case) 4wd lo Automatic trans- mission fluid pressure manual valve position switch Automatic transmission Automatic transmission fluid temperature sensor Automatic transmission shift lock actuator Battery Body control module (bcm) (beneath left rear seat) Class 2 data D2 c1 D2 sw D3 sw D4 sw Data link connector (below left side of dash) Down (3-2) E3 c2 Ect ref Ect sig Engine coolant temperature sensor (left front of engine block, near generator) F14 F5 c1 G108 (lower left side of engine) Ground Hot at all times Hot in accy, run or start Hot in run or start Ign 0 fuse 10a Ignitioin 1 Ignition Ing e fuse 10a Instrument panel cluster (ipc) Lo sw Mil ind Park/neutral position switch (left side of transmission) Pcm 1 fuse 15a Pcm b fuse 20a Pcs sol (hi) Pcs sol (lo) Pnk Powertrain control module (near lower left front of engine) Pressure control solenoid valve Prndl a in Prndl b in Prndl c in Prndl p in Rear fuse block (below left rear seat) Red Rev sw S101 S232 S239 S320 Serial data Service engine soon Solenoid Splice pack sp205 (behind left side of dash) Ss a (1-2) Ss b (2-3) Stop lamp switch, traction control switch, multi-function switch, headlamp leveling switch, inside rearview mirror Tan Tcc Tcc pmw red Tcc pwm Tcc red Tfp sw a Tfp sw b Tfp sw c Tft ref Tft sig Theft deterent control module Throttle actuator control (tac) module Underhood fuse block (left side of engine compt) Vehicle speed sensor (on left rear of transfer case) Vss (hi) Vss (lo) W/ immob W/ immobilizer W/o immob W/o immobilizer WARNING SYSTEMS Warning Systems Wiring Diagram for GMC Envoy XL 2003 List of elements for Warning Systems Wiring Diagram for GMC Envoy XL 2003: (left rear of engine compartment) (on lower left "b" pillar) g302 (right front of lower console) splice pack sp201 A12 A15 Auto B10 Belt sw input Body control module (bcm) (beneath left rear seat, on rear fuse block) Class 2 serial data Computer data lines system Door ajar Dr ajar input Driver door module (ddm) (below driver's door switch panel) Driver miniwedge (door jamb switch) Driver seat belt switch (in left front seat belt buckle) Drl defeat E10 Front passenger door module (fpdm) (below front passenger door switch panel) Front passenger miniwedge (door jamb switch) G102 G201 G302 (on lower left "b" pillar) G303 (on lower right "b" pillar) Hdlmp on sig Head Headlamp switch Ignition key alarm switch Inflatable restraint sensing & diagnostic module (sdm) (below rear of center console) Instrument panel cluster (ipc) Key in ign sw Left rear miniwedge (door jamb switch) Liftgate ajar sw Liftgate control module (lgm) Liftgate miniwedge (door jamb switch) Liftglass ajar sw Liftglass ajar switch Logic Low reference Lr dr ajar sig Nca Park Powertrain control module (pcm) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine) Radio/chime Rear fuse block Right rear miniwedge (door jamb switch) Rr dr ajar sig S227 S302 S303 Seat belt indicator Serial data Sw on input Tail gate ajar ind
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