Diagram sections — 28 (81 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY COMPUTER COMPUTER DATA LINES CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Compressor Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Compressor Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 23 4.3l A/c compressor clutch A/c compressor clutch relay A/c fuse 10a A/c high pressure cutout switch (on a/c compressor) A/c high pressure recirculating switch (in a/c muffler hose) A/c low pressure cycling switch (on a/c compressor) A/c request A/c switch All others G100 (on left radiator support bracket) G110 (4.8l, 5.3l, 6.0l) (left front of engine) G119 (4.3l) (right front of engine) Hot at all times Hot in run or start Hvac control module Ign e fuse 10a Powertrain control module (pcm) (left front of engine compt) Press switch a/c high Relay ctrl a/c comp S101 (forward lamp harn) S102 (engine harn) Underhood junction block (left side of engine compt, near battery) Heater Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Heater Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 15 Blower motor Blower motor relay Blower motor resistor assembly (on hvac module, near blower motor) Blower motor switch D12 Frt hvac fuse 30a Fuse block (lower left side of dash) G203 (right side of dash, at "a" pillar) Hot at all times Hot in run Htr-a/c fuse 25a Interior lights system Off Tan Underhood junction block (left side of engine compt, near battery) Manual A/C Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Manual A/C Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado 2001 3500: 58 4.3l A a/c disable A/c comp relay ctrl A/c compressor clutch A/c compressor clutch relay A/c fuse 10a A/c high pressure cutout switch (on a/c compressor) A/c high pressure recirculating switch (in a/c muffler hose) A/c low pressure switch (right side of accumulator) A/c request A/c switch Air temperature actuator (bottom center of hvac module) All others B mode signal Blower motor (under right side of dash) Blower motor resistor/relay assembly (on hvac module, near blower motor) Blower relay Body junctioin block C ground D recirc signal D12 Defogger system E illumination F temp signal Frt hvac fuse 30a Fuse block (lower left side of dash) G feedback G100 (on left radiator support bracket) G110 (4.8l, 5.3l, 6.0l) (left front of engine) G119 (4.3l) (right front of eng) G200 (on upper left dash at "a" pillar) G200 (right side of dash, at "a" pillar) H 5v reference High Hot at all times Hot in run Hot in run or start Htr-a/c fuse 25a Hvac 1 fuse 10a Hvac control module (under radio) Ign e fuse 10a Interior lights system J rear defog K ign power L a/c request Low M feedback Mode actuator (left side of hvac module) Off Powertrain control module (pcm) (left front of engine of engine compt) Press sw a/c high Recirculation actuator (top of hvac module) Red S101 (forward lamp harness) S102 (engine harn) Sp203 Tan Underhood junctioin block (left side of engine compt, near battery) Manual A/C Wiring Diagram, Up Level for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Manual A/C Wiring Diagram, Up Level for Chevrolet Cab & Chassis Silverado 2001 3500: 54 4.3l A a/c disable A/c compressor clutch A/c compressor clutch relay A/c fuse 10a A/c high press sw A/c high pressure cutout switch (on a/c compressor) A/c high pressure recirculating switch (in a/c muffler hose) A/c request A/c switch Air temperature actuator (bottom center of hvac module) All others B mode signal Blower motor (under right side of dash) Blower motor resistor assembly (on hvac module, near blower motor) Blower relay C ground C3 c3 D recirc signal D12 Defogger system E illumination F temp signal Frt hvac fuse 30a Fuse block (lower left side of dash) G feedback G100 (on left radiator support bracket) G110 (4.8l, 5.3l, 6.0l) (left front of engine) G119 (4.3l) (right front of eng) G203 (right side dash, at "a" pillar) H 5v reference Hot at all times Hot in run Hot in run or start Htr-a/c fuse 25a Hvac 1 fuse 10a Hvac control module (under radio) I/p junction block (lower right side of dash) Ign e fuse 10a Interior lights system J rear defog K ign power L a/c request M feedback Mode actuator (left side of hvac module) Off Powertrain control module (pcm) (left side of engine compt) Recirculation actuator (top of hvac module) Red Relay ctrl a/c comp S101 (forward lamp harness) S102 (engine harn) Tan Underhood junctioin block (left side of engine compt, near battery)
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Anti-lock Brake Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500: 58 (dlc) (below steering column) (engine harn, 20 cm into ebcm breakout) Abs fuse 60a Abs ind Abs ind failure cntl Abs serial data Axle sw signal Battery Brake fuse 18 10a Brake pres diff sw signal Brake pressure differential switch Brake warning ind Class 2 serial data Cruise control system Data link connector Diesel Drl module (under left side of dash) Electronic brake control module (ebcm) (on left side of inner frame) Engine controls system Engine wiring harness junction block (at left side of engine compt, near battery) Fuse block (on lower left side of dash) G117 (rear of right cyl head) G132 (back of engine block, below left cyl head) Gas Gauges fuse 4 10a Ground Hot at all times Hot in run Hot in run or start Ignition 3 Instrument cluster Left front wheel speed sensor Lf whl sp sens low ref Lf whl spd sens signal Parking brake switch (part of park brake assembly) Pnk Powertrain control module (pcm) (on left front of engine compt) Red Rf whl sp sens low ref Rf whl spd sens signal Right front wheel speed sensor S107 S150 (13 cm into ebcm breakout from engine harness) S152 (engine harn, 16.5 cm from evap purge valve breakout) S157 S213 S224 (cluster connector breakout, 12 cm from inflatable ip harness) S229 (w/a/t) (engine harn, near pcm) S229 (w/m/t) (i/p harn, near radio) Stoplight switch (on top of brake pedal bracket) Tan Tcc brake sw signal Transmissions system Vehicle speed sensor (vss) (on left side of transfer case) Vehicle speed sensor buffer Vehicle speed signal W/ drl W/o drl
ANTI-THEFT Forced Entry Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Forced Entry Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 32 (left side of dash, below steering column) A11 All times Body control module Cargo door key switch Door unlock Driver mini-wedge door jamb switch Driver window/door lock switch Ex lights ctrl Exterior lights system F10 Front passenger mini-wedge door jamb switch Front passenger window/door lock switch G200 (upper left kick panel) G203 (upper right kick panel) G998 (rear corner or right rear window) Grd Headlights ctrl Headlights system Horn rly ctrl Horns system Hot at I/p junction block (lower right side of dash) Lift gate key switch Remote keyless entry system Right door contactor Sp203 Sp410 Tbc fuse 10a Underhood junction block W/ cargo doors W/o cargo doors Passlock Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Passlock Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 33 A12 Battery Body control module (lower left side of dash below steering column) Body junction block (near left kick panel) Connector (below steering column) Cruise fuse 10a Data Data link F10 Fuse block G200 (upper left kick panel) Grd Hot at all times Hot in run Ign 1 fuse 10a Ign pwr Key Lock cylinder Magnet Passlock sensor (internal to steering column) Pnk Powertrain control module (on left front of engine compt) Security sensor Sensor data Sensor pwr Sensor ret Sp203 Sp203 (upper left kick panel) Steering handwheel speed/ position sensor (base of steering column) Tamper sensor Tbc fuse 10a Underhood junction block W/o rear time damping only
BODY COMPUTER Body Computer Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Body Computer Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500: 91 12v ref 54 (54 or 394) 5v ref A10 A11 A12 Acc relay Ambient light sensor (top center of dash) Anti-theft system B10 B11 B12 Battery Body control module (on lower left side of dash, below steering column) Body junction block Body wiring harness junction block Cargo lp Class 2 data Computer data lines system Cruise fuse 10a Ctsy lp Ctsy lp rly Door latch Door locks system Door sw Dr unlk rly Drl rly coil Electronic power steering system Engine controls system Evo hi Evo lo Exterior lights system F10 Fog lp rly Fog lp sw Ftp sw Fuse block G200 (upper left kick panel) Ground Headlamp rly Headlights system Headlp dim Horn rly out Horns system Hot at all times Hot in run Hot in run & start Ign 1 feed Ign 1 fuse 10a Ign 3 input Ignition key alarm switch Inadv pwr Inst panel lp Int lp sw Interior lights system Key cyl sw Key reminder Lamp relay Led dim Lf dr sw Liftgate ajar Lock coil Lp rly coil Lt turn input Nca Park brake switch Passlock sig Photocell Pk lp rly Pk lps feed Pnk Power distribution system Power distribution system (rap) Prk bk sw Rear parking assist chime module Rfa link Rt turn input Seat belt sw Sensor rtn Serial data Sp203 Tan Tbc fuse 10a Tow/haul sw Tow/haul switch Underhood junction block Unlock coil Vss Warning system Warnings system Wheel pos
COMPUTER DATA LINES Computer Data Lines for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Computer Data Lines for Chevrolet Cab & Chassis Silverado 2001 3500: 26 (under driver's seat) inflatable restraint sensing & diagnostic module A12 Allison transmission Body control module (on lower left side of dash, below steering column) Body junc- tion block (under left side of dash) Body junction block (under left side of dash) C11 Cellular phone ready wiring Cigar fuse 15a Data link connector (dlc) (under left side of dash, below steering column) Driver information center (dic) (in lower console) Electronic brake control module (ebcm) (on left side of the inner frame) G117 (right rear of of engine) G200 (upper left kick panel) Hot at all times Hvac control module (in center of dash, under radio) Instrument panel cluster (ipc) Memory mirror module Memory seat module (under driver seat) Powertrain control module (pcm) (left front of engine compt) Sp205 (left side of dash) Splice pack sp203 Suspension control module (rear of right rear wheelwell) Transfer case shift control module (left side of dash, above headlight switch) Under- hood junction block (at left side of engine compt) Underhood junction block (at left side of engine compt, near battery)
CRUISE CONTROL
6.0L 6.0L VIN U, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 62 (36 series only) (power take off) 5 volt ref A12 A13 A14 A15 Accelerator pedal position sensor (above accelerator pedal) Act cntrl App sens App sens 1 App sens 2 App sens 3 App sense C1 d11 C2 a10 Clutch pedal position switch (top of clutch pedal) Clutch sw input Cruise control on/off switch Cruise fuse 10a Cruise req Ect fuse 15a Engine compt) Engine controls system F12 Fuse block (on lower left side of dash) G117 (right rear of engine) Ground Hot at all times Hot in run & start Ign Nca Off Pnk Powertrain control module (left front of engine compt) R/a input Resume/accel S/c input S103 Sens 1 grd Sens 1 rt Sens 2 grd Sens 2 rt Sens 3 grd Sens 3 rt Serial data Set/coast Stop lps fuse 20a Stoplamp switch (on top of brake pedal bracket) Stp lp in Tan Throttle actuator control (tac) module (near front of engine compt) Throttle actuator control motor (near front of Throttle position sensor (near front of engine compartment) Tp sens 1 Tp sens 2 Underhood junction block (left side of engine compt, near battery) Veh stop fuse 10a Vehicle speed sensor (vss) (2wd: left rear side of transmission) (4wd: left rear side of transfer case) Vehicle speed sensor adapter (4wd) (on left side of transmission) Vss high Vss low
6.6L 6.6L VIN 1, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 34 A12 A13 A14 A15 Body junction block (near left kick panel) Brake fuse 10a C1 c1 C1 f12 Clutch pedal position switch (on top of clutch pedal bracket) Clutch sw sig Cruise control on/off switch Cruise fuse 10a Cruise on input D11 Engine control module (ecm) (left front of engine compt) Engine controls system (power take off) F11 c1 Fuse block (lower left side of dash) Hot at all times Hot in run Nca Off R/a Resume/accel sig S/c Set/coast sig Stop lps fuse 20a Stoplamp switch (top of brake pedal) Stoplamp switch input Underhood junction block (near battery) Veh stop fuse 10a Vehicle speed sensor (vss) (2wd) (left side of transmission) (4wd) (left side of transfer case) Vss high Vss low
8.1L 8.1L VIN G, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 62 (36 series only) (power take off) 5 volt ref A12 A13 A14 A15 Accelerator pedal position sensor (above accelerator pedal) Act cntrl App sens App sens 1 App sens 2 App sens 3 App sense C1 d11 C2 a10 Clutch pedal position switch (top of clutch pedal) Clutch sw input Cruise control on/off switch Cruise fuse 10a Cruise req Ect fuse 15a Engine compt) Engine controls system F12 Fuse block (on lower left side of dash) G117 (right rear of engine) Ground Hot at all times Hot in run & start Ign Nca Off Pnk Powertrain control module (left front of engine compt) R/a input Resume/accel S/c input S103 Sens 1 grd Sens 1 rt Sens 2 grd Sens 2 rt Sens 3 grd Sens 3 rt Serial data Set/coast Stop lps fuse 20a Stoplamp switch (on top of brake pedal bracket) Stp lp in Tan Throttle actuator control (tac) module (near front of engine compt) Throttle actuator control motor (near front of Throttle position sensor (near front of engine compartment) Tp sens 1 Tp sens 2 Underhood junction block (left side of engine compt, near battery) Veh stop fuse 10a Vehicle speed sensor (vss) (2wd: left rear side of transmission) (4wd: left rear side of transfer case) Vehicle speed sensor adapter (4wd) (on left side of transmission) Vss high Vss low
DEFOGGERS Defogger Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Defogger Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 27 (base) (right "b" pillar) g305 (uplevel) (upper right kick panel) g203 A c1 A c2 C c1 D9 c1 F3 c1 Fuse block (on lower left side of dash) G200 Ground Hot at all times Hot in run Hot in run & start Hvac 1 fuse 10a Hvac control module (in center of dash, under radio) Ign Ign fuse 10a Ind K c1 Rear window defogger grid Rear window defogger relay Relay ctrl Rr defog fuse 30a Splice pack sp203 (upper left kick panel) Underhood junction block (at left side of engine compartment, near battery) Heated Mirrors Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Heated Mirrors Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 38 Base Body junction block (under left side of dash, near kick panel) C c7 C1 c C1 f2 D2 c1 D9 c1 Defog request Defogger switch/ timer Driver outside rearview mirror Driver window/ door lock switch F c5 F3 c1 Fuse block (on lower left side of dash) G200 (upper left kick panel) G203 (upper right kick panel) Ground Ground distribution system Hot at all times Hot in run Hot in run & start Htd mir fuse 10a Hvac 1 fuse 10a Hvac control module (in center of dash, under radio) I/p junction block (on lower right side of dash) Ign 3 Ign e fuse 10a Ind K c1 M c1 Nca Passenger outside rearview mirror Passenger window/ door lock switch Rear window defogger relay Relay ctrl Splice pack 203 Underhood junction block (at left side of engine compartment, near battery) Uplevel
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Electronic Power Steering Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 30 5 volt ref A12 A4 c1 Anti-theft system Battery Body control module (bcm) (on lower left side of dash, below steering column) Body wiring harness junction block (under left side of dash, near kick panel) Computer data lines system Cruise fuse 10a E9 c1 Electronic variable orifice (evo) solenoid (on power steering pump fluid fittings) Engine wiring harness junction block (at left side of engine compt, near battery) Evo high Evo low F10 c1 Fuse block (on lower left side of dash) G202 (upper left side of dash, at "a" pillar) Ground Hot at all times Hot in run Hot in run or start Ign 1 fuse 10a Ignition Pnk Return Serial data Signal Sp203 Steering wheel speed/ position sensor (near base of steering column) Tbc fuse 10a
ENGINE PERFORMANCE
6.0L 6.0L VIN U, Engine Performance Wiring Diagrams (1 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, Engine Performance Wiring Diagrams (1 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 65 (below steering column) data link connector (lower right rear of engine) crankshaft position sensor +5v 3-2 ss Anti-lock brake system Body control module (below steering column) Brk sw C10 C11 C12 Ckp Cls 2 data Clutch sw Cmp Coolant lev D10 E12 Ecm1 fuse 10a Ecmb fuse 20a Ect sig Egr input Electronic suspension system Fuse block G117 (right rear of engine) Gnd Ho2s hi Ho2s lo Hot at all times Hot in run & start Ign Ign 0 fuse 10a Inj1 Inj2 Inj3 Inj4 Inj5 Inj6 Inj7 Inj8 Inja fuse 15a Injb fuse 15a Injectors Ks signal Lift/dive sig Low ref O2b fuse 15a Oil lev Pnk Pnk b Powertrain control module (left front of engine compt) Prnd a Prnd b Prnd p Range b Range c Red Ref low Req torque S103 Sens gnd Sens rtn Serial data Sp205 (behind headlamp switch) Tan Under- hood junction block 6.0L VIN U, Engine Performance Wiring Diagrams (2 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, Engine Performance Wiring Diagrams (2 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 38 (in engine harness) (left front of engine) (left rear of engine) (left rear of engine) g114 (not used) Ecm b fuse 20a Engine coolant level switch (in coolant reservoir) Engine coolant temperature sensor (left front of cylinder head) Engine oil level switch (right side of oil pan) Fuel pump relay G104 G110 G117 (right rear of engine) G402 (left frame body mount bracket) 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 Knock sensor 1 (under intake manifold) Knock sensor 2 (under intake manifold) Nca Park/neutral position switch (left side of transmission) Pnk Primary fuel pump/ level sensor (in fuel tank) Red S103 S104 S113 S114a S115 S116 S312 Secondary fuel pump relay Secondary fuel pump/ level sensor (in fuel tank) Tan Throttle position sensor (w/o electronic throttle control) (on throttle body assy) Under- hood junction block 6.0L VIN U, Engine Performance Wiring Diagrams (3 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, Engine Performance Wiring Diagrams (3 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 34 1-2 sol 2-3 sol A/t fluid pressure manual valve position switch Automatic transaxle Body junction block Brake fuse 10a Camshaft position sensor (top center rear of engine) Clutch pedal position switch (top of pedal bracket) Evap canister purge valve (top right rear of engine) Evap canister vent valve (left front side of fuel tank) Exhaust gas recirculation valve (top right front of engine) F12 Fuel tank pressure sensor (in fuel tank) Fuse block Hot in run Hot in run & start Manifold absolute pressure sensor (top rear of engine) N pnk P red Pc sol valve Pnk Pnk a Pnk b Red Red e Red/ Rev Stop lps fuse 20a Stop- lamp switch (top of brake pedal bracket) Tan Tcc pwm sol Tft sensor Vehicle speed sensor (left rear of transmission) Vss adapter (4wd) (left side of trans) 6.0L VIN U, Engine Performance Wiring Diagrams (4 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, Engine Performance Wiring Diagrams (4 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 57 (right rear of engine compt) secondary air injection reaction solenoid A10 Accelerator pedal position sensor (w/ electronic throttle control) Act cntrl Air maxi fuse 30a c7 App sens App sens 1 App sens 2 App sens 3 App sense Cruise control system Cruise req D11 Data Ect fuse 15a Fuse block G114 (left rear of engine) G117 (right rear of engine) Gnd Ground Hot at all times Hot in run & start Hot in run or start Iat sensor Ign Ign e fuse 10a c2 Ign0 fuse 10a Mass airflow sensor (in air intake duct) Nca Pnk Pnk d R/a input Red S/c input S103 S104 (in engine harness) S108 Secondary air injection reaction pump (right rear of engine compt) Secondary air injection reaction relay (in engine wiring harness junction block) Sens 1 grd Sens 1 rt Sens 2 grd Sens 2 rt Sens 3 grd Sens 3 rt Sens grd Signal Stp lp in Tan Tan b Throttle actuator control (tac) module (w/ electronic throttle control) (in left rear of engine compt) Throttle actuator control motor (w/ electronic throttle control) (on throttle body) Throttle position sensor (dual track) (w/ electronic throttle control) (on throttle body) Tp sens 1 Tp sens 2 Under- hood junction block Veh stop fuse 10a 6.0L VIN U, Engine Performance Wiring Diagrams (5 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, Engine Performance Wiring Diagrams (5 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 92 (in engine harness) (left front of engine) g110 (left rear of engine) g114 (pins 70-72 not used) 1-2 ss 2-3 ss 4wd low A/c clu A/c req A/c system Air pump Anti-lock brake system Anti-lock brake system (speed signal) Automatic trans- mission input shaft speed sensor Automatic transfer case control module (above c3 headlight switch) Cruise control system Cruise eng Ctrl Cyc sw in Delivered torq Egr ctrl Egr gnd Eng1 fuse 10a Evap canp Evap vent Front axle switch (right side of center on axle housing) Frt axle sw Fuel lev Fuel pmp Fuel sig ctrl Fuse block G117 (right rear of engine) Gen f Gen l Gnd Ho2s htr high Ho2s htr low Hot in run & start Hot in run & start Iac coil hi Iac coil lo Iat sig Idle air control valve (top of throttle body) Ign Ign ctrl Ign feed Ign1 fuse 10a Ignition coils Instrument cluster systems (speed signal) Instrument panel cluster Maf sig Malfunction indicator lamp Map sig Mil ctrl Nca Nca nca Pc sol hi Pc sol lo Pnk Pnk d Powertrain control module (left front of engine compt) Prnd c Recirc door Recirc sw Red Red c Ref lo Ref low Rpm out S103 S151 S152 S153 S154 S156 S157 Sec fuel lvl Sec fuel pmp Sens gnd Spark plug Starting/charging system Tan Tft sens sig Tp sig Trans rng a Transfer case switch (left front of transaxle case) Under- hood junction block Vss high Vss low Vss out W/ atc W/ manual 4wd
6.6L 6.6L VIN 1, Engine Performance Wiring Diagrams, California (1 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, California (1 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 63 (left rear of engine) 12v ref 5v ref A/c system B/u lp supp Batt Battery Body control module (left side of dash) Can high Can low Ccp sw Ckp signal Class2 data Cmp sig Cool lev Coolant level switch (in coolant reservoir) Crankshaft position sensor (right side of harmonic balancer) Cruise control system Data link connector (under left side of dash) Ecm1 fuse 10a Ect sig Engine control module (left front of engine compt) Engine coolant temperature sensor (next to oil filler tube) Engine oil level switch (left rear of oil pan) Ficm relay Fuse block G114 G114 (left rear of engine) Gen 2 to Ground Hot in run & start Hot w/ vehicle in reverse Ia htr Ign 0 fuse 10a Ign 1 Inj1 Inj2 Inj3 Inj4 Inj5 Inj6 Inj7 Inj8 Low ref Nca Off/run/crk Oil lev sw P/n sig Plug sig Pnk Pto en Res/acc S102 S103 Set/coast Splice pack sp205 (behind headlamp switch) Starting/ charging system Tan Transmission system Under- hood junction block Veh b/u fuse 15a Water in fuel Water in fuel sensor (attached to fuel filter) 6.6L VIN 1, Engine Performance Wiring Diagrams, California (2 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, California (2 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 43 (in engine harness) (left rear of engine) A11 Accelerator pedal position sensor (behind accelerator pedal) Battery Battery fuse 175a C11 Camshaft position sensor (front of engine) Ecmb fuse 20a Ecmprv fuse 15a F1 c2 Fuel heater (top of fuel filter element) Fuel ht fuse 25a Fuel pump (auxiliary tank) (left side frame rail) Fuel pump relay Fuse holder G113 (left front body mount) G114 G114 (left rear of engine) G414 (left frame body mount) Glow plug controller Glow plugs Ground Hot at all times Hot in run & start Ign 1 Ign 1 relay Intake air heater (rear of engine) Intake air heater relay (rear of engine) Intake air temperature/ mass airflow sensor (in air induction tube) Nca Plug sig Pnk Red Relay ctrl S102 S172 S173 S174 S175 Series Tan Under- hood junction block 6.6L VIN 1, Engine Performance Wiring Diagrams, California (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, California (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 48 (in engine harn) (in injector harn) (in injector harn) s167 (left rear of eng) (pins 49-58 not used) (pins 6-43 not used) (pins 68-81 not used) (pins 82-89 not used) (pins 95-113 not used) (right front of eng) g119 Baro sensor (left side of engine) Boost sensor (on intake manifold) C12 Can hi Can low Eng1 fuse 10a Engine spd Fuel injector control module (right front of engine, under air intake duct assembly) Fuel injectors Fuel pressure sensor G114 Ground Hot in run & start Ign Ign 2,3,5,8 Ign pos Inj 8 Inj1 Inj2 Inj3 Inj4 Inj5 Inj6 Inj7 Inj8 Injb fuse 25a Nca Pnk Red S119 S166 S168 S169 S170 S171 Tan Transmission control system Under- hood junction block 6.6L VIN 1, Engine Performance Wiring Diagrams, California (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, California (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 89 (in engine harn) (left rear of eng) 12 v redf 4wd low 5 volt ref A/c clu rly A/c hi pres A/c low A/c req A/c system Anti-lock brake system App sens 1 App sens 3 Axle sig Baro sens Body junction block Boost sens Brake fuse 10a C1 c1 Charge ind Chmsl supp Cruise control system Cruise fuse 10a Cruise on sig Electronic suspension system Engine control module (left front of engine compt) Engine spd Engine speed Exterior lights system F pmp rly ctrl Fog lamps fuse 15a Front sig hi Frp sens Fuel lev sens Fuel pres reg Fuel rail pressure regulator Fuel temp sig Fuel temperature sensor (under upper intake shield) Fuse block G114 Gen f Glow plug rly Ground Hot at all times Hot in run Hot in run & start Ia htr Iat sens Ign 1 volt Ign1 fuse 10a Ind logic Instrument cluster Instrument cluster system Instrument panel cluster Interior lights system Lift/dive Low ref Maf sens Malfunction indicator lamp Mil ctrl Nca Off Pnk Power take off relay (attached to underhood fuse block bracket) Power take off switch Pto disable Pto engage Pto fdbk Recirc door Red Rpm out S103 S163 S164 Set Sound system Sp203 (on top left of dash) Starting/charging system Stoplight switch (top of brake pedal bracket) Tan Tcc brake Tcm mil Transmission control module (left front of eng compt) Transmission control system Transmission system Under- hood junction block Vss Vss high Wait to start 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (1 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (1 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 63 (left rear of engine) 12v ref 5v ref A/c system B/u lp supp Batt Battery Body control module (left side of dash) Can high Can low Ccp sw Ckp signal Class2 data Cmp sig Cool lev Coolant level switch (in coolant reservoir) Crankshaft position sensor (right side of harmonic balancer) Cruise control system Data link connector (under left side of dash) Ecm1 fuse 10a Ect sig Engine control module (left front of engine compt) Engine coolant temperature sensor (next to oil filler tube) Engine oil level switch (left rear of oil pan) Ficm relay Fuse block G114 G114 (left rear of engine) Gen 2 to Ground Hot in run & start Hot w/ vehicle in reverse Ia htr Ign 0 fuse 10a Ign 1 Inj1 Inj2 Inj3 Inj4 Inj5 Inj6 Inj7 Inj8 Low ref Nca Off/run/crk Oil lev sw P/n sig Plug sig Pnk Pto en Res/acc S102 S103 Set/coast Splice pack sp205 (behind headlamp switch) Starting/ charging system Tan Transmission system Under- hood junction block Veh b/u fuse 15a Water in fuel Water in fuel sensor (attached to fuel filter) 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (2 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (2 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 34 (left rear of engine) A11 Accelerator pedal position sensor (behind accelerator pedal) Battery fuse 175a C11 Camshaft position sensor (front of engine) Ecmb fuse 20a Ecmprv fuse 15a F1 c2 Fuel heater (top of fuel filter element) Fuel ht fuse 25a Fuel pump (auxiliary tank) (left side frame rail) Fuel pump relay Fuse holder G113 (left front body mount) G114 G114 (left rear of engine) G414 (left frame body mount) Glow plug relay Glow plug/ intake heater relay assembly Glow plugs Hot at all times Hot in run & start Ign 1 relay Intake air heater (rear of engine) Intake air heater relay Intake air temperature/ mass airflow sensor (in air induction tube) Nca Pnk Red S102 Series Tan Under- hood junction block 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 48 (in engine harn) (in injector harn) (in injector harn) s167 (left rear of eng) (pins 49-58 not used) (pins 6-43 not used) (pins 68-81 not used) (pins 82-89 not used) (pins 95-113 not used) (right front of eng) g119 Baro sensor (left side of engine) Boost sensor (on intake manifold) C12 Can hi Can low Eng1 fuse 10a Engine spd Fuel injector control module (right front of engine, under air intake duct assembly) Fuel injectors Fuel pressure sensor G114 Ground Hot in run & start Ign Ign 2,3,5,8 Ign pos Inj 8 Inj1 Inj2 Inj3 Inj4 Inj5 Inj6 Inj7 Inj8 Injb fuse 25a Nca Pnk Red S119 S166 S168 S169 S170 S171 Tan Transmission control system Under- hood junction block 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Engine Performance Wiring Diagrams, Except California (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 89 (in engine harn) (left rear of eng) 12 v redf 4wd low 5 volt ref A/c clu rly A/c hi pres A/c low A/c req A/c system Anti-lock brake system App sens 1 App sens 3 Axle sig Baro sens Body junction block Boost sens Brake fuse 10a C1 c1 Charge ind Chmsl supp Cruise control system Cruise fuse 10a Cruise on sig Electronic suspension system Engine control module (left front of engine compt) Engine spd Engine speed Exterior lights system F pmp rly ctrl Fog lamps fuse 15a Front sig hi Frp sens Fuel lev sens Fuel pres reg Fuel rail pressure regulator Fuel temp sig Fuel temperature sensor (under upper intake shield) Fuse block G114 Gen f Glow plug rly Ground Hot at all times Hot in run Hot in run & start Ia htr Iat sens Ign 1 volt Ign1 fuse 10a Ind logic Instrument cluster Instrument cluster system Instrument panel cluster Interior lights system Lift/dive Low ref Maf sens Malfunction indicator lamp Mil ctrl Nca Off Pnk Power take off relay (attached to underhood fuse block bracket) Power take off switch Pto disable Pto engage Pto fdbk Recirc door Red Rpm out S103 S163 S164 Set Sound system Sp203 (on top left of dash) Starting/charging system Stoplight switch (top of brake pedal bracket) Tan Tcc brake Tcm mil Transmission control module (left front of eng compt) Transmission control system Transmission system Under- hood junction block Vss Vss high Wait to start
8.1L 8.1L VIN G, Engine Performance Wiring Diagrams (1 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagrams (1 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 64 (below steering column) data link connector (lower right rear of engine) crankshaft position sensor +5v Body control module (below steering column) Brk sw C10 C11 C12 Ckp Cls 2 data Clutch sw Cmp Coolant lev E12 Ecm1 fuse 10a Ecmb fuse 20a Ect sig Egr input Electronic suspension system Fuse block G117 (right rear of engine) Gnd Ho2s hi Ho2s lo Hot at all times Hot in run & start Ign Ign 0 fuse 10a Inj1 Inj2 Inj3 Inj4 Inj5 Inj6 Inj7 Inj8 Inja fuse 15a Injb fuse 15a Injectors Ks signal Lift/dive sig Low ref Nca O2b fuse 15a Oil lev Pnk Powertrain control module (left front of engine compt) Prnd p Pto enable Pto eng kill Pto engage Pto status Ref low Req torque S103 S152 S154 Sens gnd Sens rtn Serial data Sp205 (behind headlamp switch) Tan Transmission control system Under- hood junction block 8.1L VIN G, Engine Performance Wiring Diagrams (2 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagrams (2 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 34 (in engine harness) (left front of engine) (left rear of engine) (left rear of engine) g114 Ecm b fuse 20a Engine coolant level switch (in coolant reservoir) Engine coolant temperature sensor (left front of cylinder head) Engine oil level switch (right side of oil pan) Fuel pump relay G104 G110 G117 (right rear of engine) G402 (left frame body mount bracket) 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 Knock sensor 1 (under intake manifold) Knock sensor 2 (under intake manifold) Nca Park/neutral position switch (left side of transmission) Pnk Primary fuel pump/ level sensor (in fuel tank) S103 S104 S114a S115 S116 S312 Secondary fuel pump relay Secondary fuel pump/ level sensor (in fuel tank) Tan Under- hood junction block 8.1L VIN G, Engine Performance Wiring Diagrams (3 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagrams (3 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 45 Body junction block Brake fuse 10a Camshaft position sensor (on left side of timing cover) Clutch pedal position switch (top of pedal bracket) Cruise control system Cruise fuse 10a Del torque Evap canister purge valve (top right rear of engine) Evap canister vent valve (left front side of fuel tank) Exhaust gas recirculation valve (top right front of engine) F12 Fog lamps fuse 15a Fuel tank pressure sensor (in fuel tank) Fuse block G202 (upper left side of dash) Harn) Hot in run Hot in run & start Ind logic Interior lights system Manifold absolute pressure sensor (top rear of engine) Mil req Off Pnk Pnk a Pnk b Power take off relay (on underhood junction block) Power take off switch Red Red e Req torque S161 S162 S163 S164 (engine harn) Set Stop lps fuse 20a Stop- lamp switch (top of brake pedal bracket) Tan Transmission control module (left front of engine compt) Under- hood junction block Unm tor Vehicle speed sensor (left rear of transmission) Vss Vss adapter (4wd) (left side of trans) 8.1L VIN G, Engine Performance Wiring Diagrams (4 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagrams (4 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 55 (right rear of engine compt) secondary air injection reaction solenoid A10 Accelerator pedal position sensor Act cntrl Air maxi fuse 30a c7 App sens App sens 1 App sens 2 App sens 3 App sense Cruise control system Cruise req D11 Data Ect fuse 15a G114 (left rear of engine) G117 (right rear of engine) Gnd Ground Hot at all times Hot in run & start Hot in run or start Iat sensor Ign Ign e fuse 10a c2 Mass airflow sensor (in air intake duct) Nca Pnk Pnk d R/a input Red S/c input S103 S104 (in engine harness) S108 Secondary air injection reaction pump (right rear of engine compt) Secondary air injection reaction relay (in engine wiring harness junction block) Sens 1 grd Sens 1 rt Sens 2 grd Sens 2 rt Sens 3 grd Sens 3 rt Sens grd Signal Stp lp in Tan Tan b Throttle actuator control (tac) module (in left rear of engine compt) Throttle actuator control motor (near front of engine compt) Throttle position sensor (dual track) (near front of eng compt) Tp sens 1 Tp sens 2 Under- hood junction block Veh stop fuse 10a 8.1L VIN G, Engine Performance Wiring Diagrams (5 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, Engine Performance Wiring Diagrams (5 of 5) for Chevrolet Cab & Chassis Silverado 2001 3500: 85 (in engine harness) (left front of engine) g110 (left rear of engine) g114 (pins 70-71 not used) (pins 76-79 not used) 4wd low A/c clu A/c req A/c system Air pump Anti-lock brake system (speed signal) Automatic trans- mission input shaft speed sensor Automatic transfer case control module (above c3 headlight switch) Cruise control system Cruise eng Ctrl Cyc sw in Delivered torq Egr ctrl Egr gnd Eng1 fuse 10a Evap canp Evap vent Front axle switch (right side of center on axle housing) Frt axle sw Fuel lev Fuel pmp Fuel sig ctrl Fuse block G117 (right rear of engine) Gen f Gen l Gnd Ho2s htr hi Ho2s htr high Ho2s htr low Ho2s low ctrl Hot in run & start Hot in run & start Iat sig Ign Ign ctrl Ign feed Ign1 fuse 10a Ignition coils Instrument cluster systems (speed signal) Instrument panel cluster Maf sig Malfunction indicator lamp Map sig Mil ctrl Nca Nca nca Pnk Pnk d Powertrain control module (left front of engine compt) Recirc door Recirc sw Red Red c Ref lo Ref low Rpm out S103 S148 S149 S151 S153 S159 S160 Sec fuel lvl Sec fuel pmp Sens gnd Spark plug Starting/charging system Tan Tcc ctrl Trans mil Transfer case switch (left front of transaxle case) Under- hood junction block Vss high Vss low Vss out W/ atc W/ manual 4wd
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Back-up Lamps Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 21 (left side of transmission) back-up lamp switch A trailer connector (heavy duty) A/t B/u lp fuse 25a B10 Back-up alarm (w/ rpo) Back-up lamp switch (part of park/neutral position switch) (left side of transmission) Body computer module (lower left side of dash) G415 (on spare tire Hoist bracket) Hot in run or start Left back-up lamp M/t Mirrors system (automatic day/night mirror) Pnk Rear lamps bussing block (front of rear bumber, on crossmember) Right back-up lamp S416 (left frame rail near body mount) Trlr b/u fuse 10a Underhood junction block (left side of eng compt, near battery) Veh b/u fuse 15a Trailer/Camper Adapter Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Trailer/Camper Adapter Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 58 (in camper wiring harn) Body control module Body junction block (left side of dash) C1 c C1 c11 C1 f2 C10 c1 C2 d10 C3 b3 C3 e1 C3 e5 C5 a C5 b C5 c C5 d C5 f Camper extension Camper in-line connector Camper wiring (pickup only) Chmsl fuse 10a D10 E10 F c1 F10 c2 G203 (upper left kick panel) G415 (on spare tire hoist bracket) Heavy duty trailer wiring Hot at all times Hot with back-up lamp switch closed Hot with park lamp relay energized Hot with stop lamp switch depressed Int prk fuse 10a Light duty trailer wiring Nca Pickup only Red S400 (in camper wiring harn) S401 (in camper wiring harn) S402 (in camper wiring harn) S403 (in camper wiring harn) S404 (in camper wiring harn) S405 S406 Splice pack Stud 1 Stud 1 maxi fuse 40a Stud 2 Stud 2 maxi fuse 30a Trailer connector Trailer in-line connector Trl l trn fuse 10a Trl prk fuse 15a Trl r trn fuse 10a Trlr b/u fuse 15a Turn/ hazard switch Underhood junction block (left side of eng compt, near battery) Utilities only Veh b/u fuse 15a
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Ground Distribution Wiring Diagram (1 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 84 (4.3l) g119 (right front of engine) (6.6l) g119 (right front of engine) (others) (canada) 4.3l A c1 A/c A/c high pressure recirculating switch A/c low pressure switch All other gas Automatic transmission control (allison) Auxiliary B8 c2 Battery relay Body junction block (under left side of dash) Brake fluid C d C2 a7 Coil module Compressor clutch Coolant level switch Cruise control module D12 Data link connector (dlc) Driver information center (dic) Electronic brake control module (ebcm) Engine Front axle actuator Front windshield washer fluid pump Fuel heater Fuel pump & sender assembly Fuel pump relay G108 (left radiator support bracket) G113 (on left front body mount) G114 (left rear of engine) G117 (right rear of engine) G132 (right front of engine block) Headlamp relay Heated oxygen sensor (ho2s) (bank 1 sensor 1) Heated oxygen sensor (ho2s) (bank 1 sensor 2) Heated oxygen sensor (ho2s) (bank 2 sensor 1) Heated oxygen sensor (ho2s) (bank 2 sensor 2) Ign 1 relay Ignition Ignition coils (left bank) (v8 gas only) Ignition coils (right bank) (v8 gas only) Instrument panel cluster (ipc) Left battery Left daytime running lamp (drl) Left fog lamp Left horn Left park/ turn signal lamp Level switch Mass air flow (maf) sensor Motor module Nca Oil level switch Park/ neutral position switch Power Powertrain control module (pcm) Rear window washer pump Right battery Right daytime running lamp (drl) Right fog lamp Right horn Right park/ turn signal lamp S102 (engine harness) S103 (engine harness) S156 (eng harn) S157 (engine harn) Secondary air injection (air) pump Secondary air injection (air) solenoid Secondary fuel pump & sender assembly Starter relay Takeoff (pto) Throttle actuator control module Transfer case control module Transfer case shift control switch Underhood junction block (left side of engine compt) Underhood lamp V8 gas W/atc W/o atc Washer fluid level sensor Windshield wiper Ground Distribution Wiring Diagram (2 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Ground Distribution Wiring Diagram (2 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 81 (base only) (base only) air temperature actuator (base only) driver door lock switch (base only) driver mini wedge (door jamb switch) (base only) front passenger door lock switch (base only) front passenger mini wedge (door jamb switch) (base only) mode actuator (base only) recirculation door motor (base pickup only) cigar lighter (not used) (pickup) fog/ cargo lamp switch (utility) foglamp/ rear window wiper switch (uplevel only) transfer case shift control switch A utility pickup A/t shift lock solenoid A12 A16 Accessory power outlet Ashtray lamp Audio amplifier Automatic day-night rearview mirror w/ compass B12 Bin lamp Blower motor switch/hvac control module Body control module (bcm) Body junction block (under left side of dash) C10 C11 C297 C297c Center high mounted stop/ cargo lamp Cigar lighter Courtesy lamp module Courtesy lamp relay Data link connector (dlc) Dimmer switch Door locks relay Driver door key switch Driver mini wedge (door jamb switch) Driver outside power mirror Driver window/ door lock switch E13 E16 F12 Fuse block (lower left side of dash) G200 (upper left kick panel) Headlamp dimmer switch Heated/ memory seat switch Horn switch Ignition key alarm switch Inflatable restraint ip module switch Inside air temperature sensor assembly Instrument panel cluster (ipc) Left rear heated seat switch Left vanity mirror Luxury only Mid courtesy/ reading lamp Nca Outside power mirror switch Park switch Power door lock switch Power window switch Radio Reading lamps Rear courtesy/ reading lamp Rear seat audio (rsa) controller Remote control door lock receiver Right rear heated seat switch Right vanity mirror Roof beacon switch S303 S305 (in headliner harness) Selectable ride switch Sp203 Steering column Suburban only Tow/ haul switch Traction control switch Transfer case shift control module Turn/ hazard flasher Uplevel only Vehicle interface unit (viu) Ground Distribution Wiring Diagram (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Ground Distribution Wiring Diagram (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 76 (auto- ecc) hvac control module (base seat) (base suburban/ utility) front passenger door lock switch (heavy duty) trailer connector (light duty) trailer connector (uplevel) air temperature actuator (uplevel) hvac control module (uplevel) mode actuator motor (uplevel) recirculation motor 6.0l A11 A18 Blower motor resistor assembly C10 Door lock switch Driver heated seat element Driver heated seat relay Driver seat adjust switch Driver seat adjuster switch Driver seat bolster switch Driver seat lumbar motor Front Front passenger heated seat element Front passenger heated seat relay Front passenger heated seat switch Front passenger heated seat thermistor Front passenger mini wedge (door jamb switch Front passenger mini wedge (door jamb switch) Front passenger seat adjuster switch Front passenger window/ door lock switch Full feature seat G203 (upper right kick panel) G300 (under driver's seat) G415 (on spare tire hoist bracket) (w/ rear lamps bussing block) G416 (left rear body mount) G416 (on left frame rail near body mount) Heated seat thermistor I/p compart- ment lamp Inflatable restraint sensing & diagnostic module Ip junction block (lower right side of dash) Left back-up lamp Left front shock solenoid Left license lamp Left rear shock solenoid Left rear tail/ stoplamp Left rear turn signal lamp Memory seat module Nca Nca b Passenger outside rearview mirror Passenger seat adjuster switch Passenger seat bolster switch Passenger seat lumbar motor Power seat Power sunroof module Power window switch Primary fuel pump & sender assembly Rap 2 relay Rear lamps bussing block (front of rear bumper on crossmember) Right back-up lamp Right front shock solenoid Right license lamp Right rear shock solenoid Right rear tail/ stoplamp Right rear turn signal lamp Roof beacon ground Roof beacon relay Roof marker lamps S201 (near roof marker lamps) S307 S308 S309 Seat belt switch Secondary fuel pump & sender assembly Uplevel only Window lock out Ground Distribution Wiring Diagram (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Ground Distribution Wiring Diagram (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 67 (ecc-auto) c2 (front) auxiliary blower motor switch (heavy duty) trailer connector (light duty) trailer connector (others) (pickup only) rear window defogger grid (rear) auxiliary blower motor switch (security) right cargo key switch (suburban/ yukon xl) rear dome lamp (utility) roof beacon ground (utility) roof beacon relay (w/heat or a/c, or auto-ecc) auxiliary blower motor resistor assembly (w/o auto) auxiliary blower motor resistor assembly (w/o sunroof) (w/sunroof) 4 door tahoe/yukon A a A8 b8 Accessory power outlet (console) Auxiliary a/c request switch Auxiliary air temperature actuator Auxiliary mode actuator Cargo door Center high mounted stoplamp Compressor leveling module G305 (right "b" pillar) G308 (left "b" pillar) G415 (on spare tire hoist bracket) (w/o rear lamps bussing block) G998 (rear corner of right rear window) Hvac control module Left back-up lamp Left cargo door ajar switch Left cargo rear window defogger grid Left door contactor Left license lamp Left liftgate ajar switch Left rear heated seat module Left rear mini wedge (door jamb switch) Left rear tail/ stoplamp Left rear turn signal lamp Left rear window/ door lock switch Liftgate Liftgate key switch Liftglass ajar switch Nca Rear accessory power outlet Rear window defogger grid Rear window wiper module Right back-up lamp Right cargo door ajar switch Right cargo rear window defogger grid Right door contactor Right license lamp Right liftgate ajar switch Right rear heated seat module Right rear mini wedge (door jamb switch) Right rear tail/ stoplamp Right rear turn signal lamp Right rear window/ door lock switch S410 S415 S420 Sp410 Sp410a Suburban/ yukon xl Suspension control module W/ecc- auto
HEADLIGHTS Headlight Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Headlight Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 57 A11 Al sens ref Al sens sig Ambient light sensor (on top center of dash) Auto Body control module (lower left side of dash) Body junction block (under left side of dash) C1 b4 C1 d3 C1 f7 C2 f7 Drl fuse 10a Drl relay E10 E11 E12 E13 Exterior lamps system (park lamp relay) F2 c1 Flash- to-pass Fog lamp switch Fog lp relay Fog lp sw Fog lps fuse 15a Ftp in G108 (on left radiator support) G114 (left rear of engine) G202 Head Headlamp dimmer switch Headlamp relay Headlamp switch High High beam Hot at all times Hot in run or start Igne fuse 10a Left drl lamp Left fog lamp Left high beam headlamp Left low beam headlamp Low Lt hdlp fuse 15a On indicator Park Pickups Right drl lamp Right fog lamp Right high beam headlamp Right low beam headlamp S100 S101 S102 Splice pack 203 (left side of dash) Tbc fuse 10a Underhood junction block (left side of engine compt) Utilities
HORN Horn Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Horn Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 14 (left side of engine compartment) A11 C1 body control module (in center console) G108 (left radiator support bracket) 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 junction block
INSTRUMENT CLUSTER Driver Information Center Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Driver Information Center Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 27 Battery Body junction block Body junction block (under left side of dash, near kick panel) Class 2 data Data link connector (below steering column) Driver information center Fuse block (on lower left side of dash) G117 (right rear of engine) Ground Hot at all times Hot in run, bulb test, or start Hot in run, start or w/ rap energized Ign 1 fuse 10a Ign 1 volt Instrument panel cluster Interior lights system Lamp voltage Pnk Powertrain control module (pcm) (on left front of engine compt) Radio fuse 10a Rap volt Rdo 1 fuse 10a Sp205 (behind headlamp switch) Underhood junction block Underhood junction block (at left side of engine compt, near battery) Vss Vss out Instrument Cluster Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Instrument Cluster Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 90 (not used) 4wd ind A10 A11 A12 A4 pnk d8 Abs ind Air bag ind B10 B11 B12 Body control module Body junction block Body junction block (under left side of dash, near kick panel) Body wiring harness junction block Brake ind C201 Class 2 data Computer data lines system Cruise control module Cruise fuse 10a Cruise ind Cruise pwr Data lines Driver information center Engine controls system Engine oil pressure sensor Exterior lights system Fuel gauge Fuel lvl-primary Fuel lvl-secondary Fuel pump & sender assembly- primary Fuel pump & sender assembly- secondary Fuse block (on lower left side of dash) G108 (left radiator support bracket) G117 (right rear of engine) G200 (upper left kick panel) High beam ind Hot at all times Hot in run Hot in run, bulb test, or start Hour meter Ign 1 fuse 10a Ign o fuse 10a Ignition 0 Illum pwr Illumination (6 bulbs) Instrument cluster Interior lights system Led dim Left turn ind Logic Low ref Low wash Low washer switch (in washer fluid reservoir) Message center Nca Odometer Oil gauge Oil press Park brake switch (part of the park brake assembly) Park sw Pnk Powertrain control module (pcm) (on left front of engine compt) Prnd321 Radio Radio fuse 10a Right turn ind S100 S312 Seat belt ind Service engine soon ind Sp203 Spare Speedometer Suspension control module Tach out Tacho Tachometer Temp gauge Trans temp gauge Trip Underhood junction block Underhood junction block (at left side of engine compt, near battery) Upshift ind Volts gauge Vss Vss out W/ dual tank W/o dual tank
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Courtesy Lamps Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado 2001 3500: 43 (not used) A10 A12 B (not used) B1 (not used) B12 Body control module (on lower left side of dash, below steering column) Body junction block (under left side of dash, near left kick panel) C10 C11 C12 C9 c2 Cargo lamp Cargo lamp switch Cargo lp sw Courtesy lamp relay Ctsy lp fuse 15a Ctsy lp rly D (not used) Dome lamp Dome lamp defeat switch Dome lamp switch Dome lp dft Dome lp sw Fuse block (on lower left side of dash) G132 (right front of engine block) G200 (upper left kick panel) Headlamp & panel dimmer switch Hot at all times Inadvert rly Inadvertant power relay Lamp request Left i/p courtesy lamp Left mini wedge (door jamb switch) Lt door jamb Right i/p courtesy lamp Right mini wedge (door jamb switch) Rt dr jamb S102 Sp203 Tan Underhood junction block (on left side of engine compt, near battery) Underhood off lamp assembly Courtesy Lamps Wiring Diagram, Up Level for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Courtesy Lamps Wiring Diagram, Up Level for Chevrolet Cab & Chassis Silverado 2001 3500: 41 (not used) A10 A11 B12 Body control module (on lower left side of dash, below steering column) Body junction block (under left side of dash, near left kick panel) C10 C12 C9 c2 Cargo lamp Cargo lamp switch Cargo lp sw Courtesy lamp relay Ctsy lp fuse 15a Ctsy lp rly D10 Dome lamp Dome lamp defeat switch Dome lamp switch Dome lp dft Dome lp sw Fuse block (on lower left side of dash) G132 (right front of engine block) G200 (upper left kick panel) G203 (upper right kick panel) Headlamp & panel dimmer switch Hot at all times I/p compart- ment lamp I/p junction block (on lower right side of dash) Inadvert rly Inadvertent power relay Lamp request Left front door courtesy lamp Left i/p courtesy lamp Reading lamps Right front door courtesy lamp Right i/p courtesy lamp S102 Sp203 Underhood junction block (on left side of engine compt, near battery) Underhood lamp assembly off Instrument Illumination Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Instrument Illumination Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 47 (4 bulbs) (6 bulbs) A12 Ashtray lamp Auto B12 B5 c1 Base Body control module (on lower left side of dash, below steering column) Body junction block (under left side of dash, near left kick panel) C10 Dim in Driver heated seat switch F12 Fog/ cargo lamp switch Fuse block (on lower left side of dash) G200 (upper left kick panel) G203 (upper right kick panel) Head Headlamp & panel dimmer switch Hot at all times Hvac control module I/p dim I/p junction block (on lower right side of dash) Illum fuse 10a Inflatable restraint i/p module switch Instrument cluster Int prk fuse 10a Left power door lock switch Left power window switch Left power window/ door lock switch Nca Parade mode Park Park lp rly Park lp sig Park lps fuse 30a Parklamp relay Power mirror switch Radio Roof beacon switch Select- able ride switch Sp203 Traction assist switch Transfer case shift control switch Underhood junction block (on left side of engine compt, near battery) Up level
MEMORY SYSTEMS Driver's Memory Seat Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Driver's Memory Seat Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 70 (under driver's seat) A/t shift lock A3 a3 B7 c1 Back Batt pos volt Btsi fuse 10a Driver seat adjustment switch Driver window door lock switch Front vert dn Front vert up Frt dn Frt up Ft vert dn ctrl Ft vert pos sen Ft vert up ctrl Fuse block (lower left side of dash) Fwd G c4 G304 (under driver's seat) Ground Hall effect sensor Horiz fwd Horiz fwd ctrl Horiz pos sen Horiz rwd Horiz rwd ctrl Hot at all times Hot in run Ign 3 fuse 10a Ign 3 volt Memory 1 sw Memory 2 sw Memory seat module (underside of driver's seat) Memory seat switch Memory set sw Mir/lock fuse 3a Nca Not used Rcl 1 Rcl 2 Rcl back Rcl fwd Rear dn Rear up Rear vert dn Rear vert up Recline fwd Recline fwd ctrl Recline pos sen Recline rwd Recline rwd ctrl Recliner motor Red Rr vert dn ctrl Rr vert pos sen Rr vert up ctrl S308 S310 S314 S315 S316 Seat front verticle motor (under driver's seat) Seat horizonal motor (under driver's seat) Seat rear vertical motor (under driver's seat) Seats circuit breaker 25a Set Shift interlock system Tan Underhood junction block (at left side of engine compartment, near battery)
POWER DISTRIBUTION Power Distribution Wiring Diagram (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Power Distribution Wiring Diagram (3 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 100 (4.3l) (all other gas) (auto ecc) (base) (diesel) (diesel) (gas) (engine harness) s199 (except 4.3l) (gas) (manual) (on lower left side of dash) fuse block (other pnk (other) (uplevel pickups & utilities) 4.3l 4wd fuse 15a A11 Air temperature actuator All other gas Auxiliary battery relay B h B j B10 Blower motor switch (manual) Brake fuse 10a C10 C11 C12 C2 c1 Clutch pedal position switch Compressor leveling relay relay D10 Diesel E10 E12 Ecm 1 fuse 10a ecm prv fuse 15a Electronic brake control module (ebcm) Engine control module (ecm)/ Engine control module (ecm)/ powertrain control module (pcm) Etc fuse 15a From cruise g From eng 1 fuse (diagram 2 of 4) from ecm b fuse (diagram 1 of 4) From fuse link (diagram 1 of 4) From ign c f From rr hvac fuse (diagram 2 of 4) Front axle actuator Front passenger heated seat switch Fuel injector 1 Fuel injector 2 Fuel injector 3 Fuel injector 4 Fuel injector 5 (all gas) Fuel injector 6 Fuel injector 7 (except 4.3l) Fuel injector 8 Fuse (diagram 2 of 4) G114 (left rear of engine) Gas Gas) Heater auxiliary blower motor resistor Htr/ a/c fuse 25a Hvac 1 fuse 10a Hvac control module I/p junction block (on lower right side of dash) Ign 1 relay Ign 3 fuse 10a Ignition coil Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Ignition coil 7 Ignition coil 8 Ignition coil driver Inj a fuse 15a Inj b fuse 25a 15a Injector control module (icm) Left front heated seat switch Left rear heated seat module Mega fuse 125a Memory seat module (except pickup) Memory seat module (pickup only) Mode actuator Nca Pnk Powertrain control module (pcm) (4.3l) Recirculation actuator Red Right battery Right rear heated seat module S104 S152 (eng pnk harn) S154 (eng pnk harn) Stoplamp switch Suspension control module To a/c auxiliary blower motor resistor assembly (diagram 4 of 4) Transfer case shift control module Under- hood junction block (on left side of engine compt) Power Distribution Wiring Diagram (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Power Distribution Wiring Diagram (4 of 4) for Chevrolet Cab & Chassis Silverado 2001 3500: 75 (except pickup) (not used) (pickup only) (pickup) (utilities) A/c auxiliary blower motor resistor assembly A10 Air temperature actuator Air temperature sensor Base Base pickup Base utility Body control module (bcm) Body junction block fuse block (under left side of dash) C1 b4 C1 c9 C1 e7 C14 C4 k C4 l C6 c C7 e Door lock fuse 20a Door lock relay Door unlock relay Driver door lock switch Driver door unlock relay (uplevel only) Driver memory seat switch Driver seat adjuster switch Driver window/ door lock switch F11 From fuse block (diagram 2 of 4) From i/p junction block (diagram 3 of 4) From rap fuse d (diagram 1 of 4) Front auxiliary hvac control assembly Front passenger door lock switch Front passenger seat adjuster switch Front passenger window/ door lock switch Fuse block (on lower left side of dash) I/p junction block Instrument cluster & sound systems Left full feature seat Left power door lock switch Left power seat Left power window/ door lock switch Memory seat switch Mir/ lock fuse 3a Mode actuator Nca Outside rear view mirror switch Pickup Pwr wdo cb 25a Radio Rap 2 fuse 10a Rdo 1 fuse 10a Rear auxiliary hvac control assembly Rear cargo door lock switch Rear hvac control module Red Relays Retained accessory power relay Right full feature seat Right power seat Seats circuit breaker 25a To rap 2 relay (diagram 1 of 4) Uplevel & 4-door Uplevel all Utilities Utility only Vehicle interface unit (viu) W/ auto ecc W/ heat & a/c W/ heat or a/c W/ sunroof W/o sunroof
POWER DOOR LOCKS Power Door Lock Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Power Door Lock Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado 2001 3500: 46 (lower right side of i/p) i/p junction block (upper left i/p, at "a" pillar) 87a A12 B11 B12 Body control module (on lower left side of dash, below steering column) Body junction block (near left kick panel) C1 a11 C1 b8 C1 f4 C211 C4 a C4 d C4 m Door lock relay Door unlock relay Dr lk rly Dr lock fuse 20a Dr unlk rly Driver door lock actuator Driver door lock switch Drv dr unlk rly E10 F12 Fuse block (on lower left side of dash) G200 G200 (upper left kick panel) Hot at all times Ign key sig Ignition key alarm switch (part of steering column assembly) Instrument panel cluster Lock Lock fuse 15a Mir/ lock fuse 3a Nca Passenger door lock actuator Passenger door lock switch Powertrain control module (left front inside of engine compartment) Splice pack Tan Unlock Unlock fuse 15a Unlock jmpr fuse 30a Vss Vss signal Power Door Lock Wiring Diagram, Up Level for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Power Door Lock Wiring Diagram, Up Level for Chevrolet Cab & Chassis Silverado 2001 3500: 58 (lower right side of i/p) i/p junction block (upper left kick panel) 87a A12 B11 B12 Battery Body control module (on lower left side of dash, below steering column) Body junction block (near left kick panel) C1 a11 C1 a12 C1 b8 C1 f2 C1 f4 C11 C211 C4 a C4 d C4 m Door lock relay Door unlock relay Dr lock fuse 20a Driver door lock actuator Driver door unlock relay Driver window/door lock switch E10 F10 F12 Fuse block (on lower left side of dash) G200 G200 (upper left kick panel) Ground Hot at all times I/p junction block (on lower right side of i/p) Ign key switch Ignition key alarm switch (part of steering column assembly) Instrument panel cluster Lf dr unlk in Lock Lock fuse 15a Lock in Mir/lock fuse 3a Nca Passenger door lock actuator Passenger window/door lock switch Powertrain control module (left front inside of engine compartment) Remote control door lock receiver (behind top center of dash) Serial data Splice pack Srl data Tan Tbc fuse 10a Underhood junction block (on left side of engine compt) Unlock Unlock fuse 15a Unlock in Vss Vss signal
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Electrochromic Mirror Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 45 (behind left side of dash) (w/ onstar) (w/o onstar) (w/o onstar) (w/ onstar) A/t B/u lp fuse 25a Back-up lamp switch (on left side of trans- mission) Back-up lamp switch (part of park/neutral position switch) (on left side transmission) Body junction block C/m C1 a11 C1 a4 C1 b10 C1 d8 C1 e12 C1 f2 C11 a C11 b C2 a9 C2 f C2 f9 C6 a C6 j C6 m Compass Dim fd Dim rtn Driver outside rearview mirror (utility) Electro-chromic Fuse block (on lower left side of dash) G202 Hot in run or start Ign 1 fuse 10a Inside rearview mirror M/t Nca Off Others Outside air temperature sensor (behind center grille) Photo sensor Pickup w/ compass & outside temperature Pnk Selector switch Temp Veh b/u fuse 15a Power Mirror Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Power Mirror Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 22 C1 m C2 g Defogger system Down Driver outside rearview mirror Driver power window/ door lock switch Fuse block G200 Heating element Hot at all times Interior lights system L c4 Left Left/ right motor Memory systems Mir/ clock fuse 3a Nca Outside rearview mirror switch Passenger outside rearview mirror Right Sp203 (upper left kick panel) Up/ down motor
POWER SEATS 6-Way Power Seat Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6-Way Power Seat Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 20 A10 Back Body junction block C14 Driver seat adjuster switch Front dn Front up Fuse block (on lower left side of dash) Fwd G300 (under driver's seat) Hot at all times Passenger power seat switch Rear dn Rear up S307 Seat circuit breaker 25a Seat front vertical motor Seat horizontal motor Seat rear vertical motor Tan Front Seat Heater Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Front Seat Heater Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 32 Body junction block (under left side of dash, near kick panel) D12 Driver heated seat relay (in driver seat) Driver heated seat thermistor Driver seat heated switch Driver seat heater element (seat back) Driver seat heater element (seat) Fuse block (on lower left side of dash) G200 (upper left kick panel) G203 (upper right kick panel) G300 (under driver's seat) Gnd Heater on ind Hot at all times Hot in run I/p junction block (lower right side of dash) Ign 3 fuse 10a Illum Interior lights system Left power window/ door lock switch Nca Passenger heated seat relay (in passenger seat) Passenger heated seat switch Passenger heated seat thermistor Passenger seat heater element (seat back) Passenger seat heater element (seat) S308 Sensor Seo 2 fuse 30a Solid state Sp203 Underhood junction block (left side of dash, near kick panel) Lumbar Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Lumbar Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 21 A10 Body junction block C14 Driver lumbar/ bolster switch Driver seat bolster m0tor Driver seat lumbar m0tor Fuse block (on lower left side of dash) G300 (under driver's seat) Hot at all times Out Pass- enger lumbar/ bolster switch Passenger seat bolster m0tor Passenger seat lumbar m0tor Pnk Power seats circuit S308 S309 S310 S311 Seat circuit breaker 25a Tan
POWER WINDOWS Power Window Wiring Diagram, 2 Door for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Power Window Wiring Diagram, 2 Door for Chevrolet Cab & Chassis Silverado 2001 3500: 19 Down Driver window motor Driver window/ door lock switch Fuse block (on lower left side of dash) G200 (upper left kick panel) Hot in acc, run, bulb test, start & with rap relay energized I/p junction block (on lower right side of dash) Interior lights system Left down Left up Passenger window motor Passenger window/ door lock switch Pwr wdo circuit breaker 25a Right down Right up Splice pack sp203 Tan Wdo dn relay Wdo up relay Power Window Wiring Diagram, 4 Door for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Power Window Wiring Diagram, 4 Door for Chevrolet Cab & Chassis Silverado 2001 3500: 34 B12 D12 Down Driver window motor Driver window switch Front passenger window motor Front passenger window switch Fuse block (on lower left side of dash) G200 (upper left kick panel) G203 (upper right kick panel) G305 (right "b" pillar) G308 (left "b" pillar) Hot in acc, run, bulb test or w/rap relay energized Hot in acc, run, bulb test, start or w/rap relay energized I/p junction block (on lower right side of dash) Interior lights system Left front down Left front up Left rear down Left rear up Left rear window motor Left rear window switch Lockout Pwr wdo circuit breaker 25a Right front down Right front up Right rear down Right rear up Right rear window motor Right rear window switch Splice pack sp203 Tan Window down relay Window up relay
RADIO Radio Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Radio Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500: 54 Antenna Audio rtn Bare Base Battery Body junction block (near left kick panel) Cd player- remote play- back device Cruise control module D10 D12 Dim sig in Dim sig out Dimmer Drain E&c line Fuse block (on lower left side of dash) G200 (upper left kick panel) Ground Hot at all times Hot with rap relay energized I/p lamp Ignition Instrument cluster Interior lights system J c4 Left front door speaker Left rear door speaker (crew cab) left rear speaker (except crew cab) Lf + Lf - Lr + Lr - Lt input Lt output Nca Pnk Powertrain control module (left front of engine compt) Premium R14 in R14 out Radio Radio fuse 15a Rdo i fuse 10a Rf + Rf - Right front door speaker Right rear door speaker (crew cab) right rear speaker (except crew cab) Rr + Rr - Rt input Rt output Sp203 Tan Underhood junction block (on left side of engine compt) Vss signal
SHIFT INTERLOCKS Shift Interlock Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Shift Interlock Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 15 (upper left kick panel) A/t shift lock control solenoid (on steering column) A16 A17 B/u lps fuse 25a Btsi fuse 10a G200 Hot in run or start Memory systems Nca Park/ neutral position switch (left side of transmission) Pnk Splice pack Stoplamp switch (top of brake pedal) Underhood junction block
STARTING/CHARGING
6.0L 6.0L VIN U, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 29 (2001 only) (left radiator support bracket) g108 (not used) (on left front side of engine) battery cable junction block (right front of engine) g119 4.3l engine All other engines Battery Body wiring harness junction block (under left side of dash, near kick panel) Charge indicator control Computer data lines Fuse block (on lower left side of dash) G117 (right rear of engine) Generator Generator field duty cycle signal Hot in run & start Ign 1 fuse 10a Instrument cluster Left battery Message center Pnk Power distribution system Powertrain control module (pcm) or vehicle control module (vcm) (on left front of engine compartment) Red Serial data class 2 Solid state Splice pack (sp205) (on left side of dash behind headlamp switch) Starter solenoid Voltmeter Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 37 (in engine harness) s102 (not used) (right front of engine block) g132 87a A/t Acc Battery cable junction block (on left front side of engine) Body wiring harness junction block (under left side of dash, near kick panel) C10 Clutch pedal position switch (on top of clutch pedal bracket) Crank fuse 10a D11 D12 F10 F11 Fuse block (on lower left side of dash) G108 (left radiator support bracket) G119 (right front of engine) Ign a fuse 40a Ign c fuse 20a Ignition switch Left battery Lock M/t Nca Off Park/neutral position switch (on left side of transmission) Power distribution system Red Run Start Starter motor Starter motor relay Starter solenoid Starting/ charging system (charging circuit) (generator left) Starting/ charging system (charging circuit) (generator right) (diesel dual generator) Underhood junction block (at left side of engine compartment, near battery)
6.6L 6.6L VIN 1, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 27 (not used) (on left front side of engine) battery cable junction block Battery Body wiring harness junction block (under left side of dash, near kick panel) Charge indicator control Computer data lines Field duty cycle signal Fuse block (on lower left side of dash) G108 (left radiator support bracket) G117 (right rear of engine) G119 (right front of engine) Hot in run & start Ign 1 fuse 10a Instrument cluster Left battery Left generator Message center Pnk Power distribution system Powertrain control module (pcm) (on left front of engine compartment) Red Right generator Serial data class 2 Solid state Splice pack (sp205) (on left side of dash behind headlamp switch) Starter solenoid Voltmeter Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 37 (in engine harness) s102 (not used) (right front of engine block) g132 87a A/t Acc Battery cable junction block (on left front side of engine) Body wiring harness junction block (under left side of dash, near kick panel) C10 Clutch pedal position switch (on top of clutch pedal bracket) Crank fuse 10a D11 D12 F10 F11 Fuse block (on lower left side of dash) G108 (left radiator support bracket) G119 (right front of engine) Ign a fuse 40a Ign c fuse 20a Ignition switch Left battery Lock M/t Nca Off Park/neutral position switch (on left side of transmission) Power distribution system Red Run Start Starter motor Starter motor relay Starter solenoid Starting/ charging system (charging circuit) (generator left) Starting/ charging system (charging circuit) (generator right) (diesel dual generator) Underhood junction block (at left side of engine compartment, near battery)
8.1L 8.1L VIN G, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 29 (2001 only) (left radiator support bracket) g108 (not used) (on left front side of engine) battery cable junction block (right front of engine) g119 4.3l engine All other engines Battery Body wiring harness junction block (under left side of dash, near kick panel) Charge indicator control Computer data lines Fuse block (on lower left side of dash) G117 (right rear of engine) Generator Generator field duty cycle signal Hot in run & start Ign 1 fuse 10a Instrument cluster Left battery Message center Pnk Power distribution system Powertrain control module (pcm) or vehicle control module (vcm) (on left front of engine compartment) Red Serial data class 2 Solid state Splice pack (sp205) (on left side of dash behind headlamp switch) Starter solenoid Voltmeter Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 37 (in engine harness) s102 (not used) (right front of engine block) g132 87a A/t Acc Battery cable junction block (on left front side of engine) Body wiring harness junction block (under left side of dash, near kick panel) C10 Clutch pedal position switch (on top of clutch pedal bracket) Crank fuse 10a D11 D12 F10 F11 Fuse block (on lower left side of dash) G108 (left radiator support bracket) G119 (right front of engine) Ign a fuse 40a Ign c fuse 20a Ignition switch Left battery Lock M/t Nca Off Park/neutral position switch (on left side of transmission) Power distribution system Red Run Start Starter motor Starter motor relay Starter solenoid Starting/ charging system (charging circuit) (generator left) Starting/ charging system (charging circuit) (generator right) (diesel dual generator) Underhood junction block (at left side of engine compartment, near battery)
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Supplemental Restraint Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 41 A10 A11 A12 A13 A14 A15 A16 A17 A18 Air bag fuse 15a Air bag indicator Class 2 serial data Data link connector (dlc) (partial) (under left side of dash, below steering column) Disable signal Fuse block (on lower left side of dash) G202 Ground High control Hot in run & start Ign 1 fuse 10a Ignition Indicator control Inflatable restraint electronic frontal sensor (efs) (under front center of vehicle, near radiator support frame) Inflatable restraint i/p module disable switch Inflatable restraint ip module Inflatable restraint sensing & diagnostic module (under driver's seat) Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil Instrument panel cluster (ipc) Interior lights system Junction block-body (under left side of dash, near left kick panel) Low control Nca Off Pnk Sensor ground Sensor signal Shorting bar Solid state Splice pack 205 (sp205) (on left side of dash, behind headlamp switch) Splice pack sp203 (sp203) (on top left side of dash, near "a" pillar)
TRANSMISSION
6.0L 6.0L VIN U, A/T Wiring Diagram, 4L80-E for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.0L VIN U, A/T Wiring Diagram, 4L80-E for Chevrolet Cab & Chassis Silverado 2001 3500: 83 (in engine harness) (not used) a (right rear of engine block) g103 +5v 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 A/t ss A12 Abs system Automatic transmission (4l80-e) Automatic transmission input shaft speed sensor (4wd) (on transmission) Body control module (lower left side of dash, below steering column) Body relay block (under c1 Brake fuse 10a Brk sw C11 Cls 2 data D3, d2 D4, d2 Data link connector (under left side of dash) Ecm1 fuse 10a Ecmb fuse 20a Ect sig Engine coolant temperature sensor (front of left cylinder head) Except light duty w/ delphi ho2s Fluid temp sensor Frt axle sw G103 (right rear of engine block) Gnd Hot at all times Hot in run Hot in run & start Hot in run, bulb test & start Ign Ign0 fuse 10a Ign1 fuse 10a Instrument cluster Instrument panel cluster (ipc) Left end of dash) Left i/p fuse block (lower left side of dash) Light duty w/ delphi ho2s Lo ref Malfunction indicator lamp Mil ctrl Park/neutral position switch (left side of transmission) Pc sol hi Pc sol lo 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 S113 Sens gnd Splice pack sp205 (left side of dash) Stoplight switch (top of brake pedal bracket) Tcc pwm Tcc pwm solenoid Tft sens sig Throttle position sensor (on throttle body assy) Tp sig Trans rng a Underhood fuse block (left side of engine c2 compt, near 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 adapter (4wd) (left side of trans) Vss hi Vss lo W/ traction assist W/o traction assist Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado 2001 3500: 27 (w/ allison transmission) 4wd fuse 15a 4wd indicator lamp A4 c1 Auxiliary battery relay Body relay block (under left side of dash) C9 c1 D2 c1 D8 c1 Data link connector (under left side of dash) Dsl(ecm) gas (pcm) Electronic brake control module (on left side of inner frame) Front axle actuator G110 (on left front body mount) Hot in run Hot in run & start Ign1 fuse 10a Instrument panel cluster Left i/p fuse block (lower left side of dash) Logic Pnk Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt) S165 (in engine harness) Splice pack sp205 (left side of dash) Transfer case shift switch (left front of transfer case) Transmission control module (w/ allison trans) (left front of engine compt) Underhood fuse block (left side of engine compt, near battery) Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado 2001 3500: 73 (left front of engine compt) (w/ allison trans) transmission control module (left front of engine compt) powertrain control module (gas engines) or engine control module (diesel) (on left front body mount) g110 (under left side of dash) data link connector (w/ allison transmission) +8v ref +8v ref out 2-hi ind 4-hi ind 4-lo ind 4wd fuse 15a 4wd ind lamp 4wd sw (lo) 4wd sw sig 4wd whl lock Atc fuse 20a Auxiliary battery relay Body relay block (under c1 C10 C11 C12 C13 C14 C15 C16 Channel-a Channel-b Channel-c Channel-p Class ii data Ctrl D10 D11 D12 D13 D14 D15 D16 Dsl (ecm) gas (pcm) Encoder logic Encoder motor Encoder rtn Front axle actuator Ft axle ctrl G110 (on left front body mount) G203 (upper left kick panel) Gnd Hot at all times Hot in run Hot in run & start Ign 3 (run) Ign1 fuse 10a Illumination lamp (2) Instrument panel cluster Interior lights system Left i/p fuse block (lower left side of dash) Left side of dash) Logic Module gnd Motor (ccw) Motor (cw) Nca Neutral ind Pnk Red S165 (in engine harness) Shift motor Solid state Splice pack sp203 Splice pack sp205 (left side of dash) Transfer case shift control module (behind headlamp switch) Transfer case shift control switch Underhood fuse block (left side of engine compt, near battery)
6.6L 6.6L VIN 1, A/T Wiring Diagram, Allison for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 6.6L VIN 1, A/T Wiring Diagram, Allison for Chevrolet Cab & Chassis Silverado 2001 3500: 82 (left front of engine block) g105 12 volt ref 4wd circuit (transfer case controls) 4wd low sig A4 c1 Allison transmission Battery Body relay block (under left end of dash) Brake fuse 10a C1 d8 C1 vss adapter (4wd) (left side of trans) C9 c1 Can data hi Can data high Can data lo Can data low Class 2 data Class 2 serial data Data link connector (under left side of dash) Driver information center Ecm b fuse 20a Engine control module (left front of engine compt) Exterior lights system Force motor solenoids G103 (right front of engine block) Ground Hot at all times Hot in run Hot in run & start Ign 0 fuse 10a Ignition Input speed sensor Instrument panel cluster (ipc) Iss high Iss low Left i/p fuse block (lower left side of dash) Low ref Malfunction indicator lamp Mil control Mil signal On/off sol a On/off sol b On/off sol c On/off solenoids Park/neutral position switch (left side of transmission) Pcs a high Pcs a low Pcs b high Pcs b low Pnk Pressure switch manifold Red Rev Reverse sig S103 Sig hi-front Signal high - front Splice pack sp205 (left side of dash) Stoplamp switch (on brake pedal bracket) Sump temper- ature sensor Tcc brake sw Tcc lockup solenoid Tcc pwm Tcc sol Tfp signal a Tfp signal b Tfp signal c Tft signal Tr signal a Tr signal b Tr signal c Tr signal p Trans id Trans mil request Transmission control module (left front of engine compt) Tss return Tss signal Turbine speed sensor 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 high Vss low Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado 2001 3500: 27 (w/ allison transmission) 4wd fuse 15a 4wd indicator lamp A4 c1 Auxiliary battery relay Body relay block (under left side of dash) C9 c1 D2 c1 D8 c1 Data link connector (under left side of dash) Dsl(ecm) gas (pcm) Electronic brake control module (on left side of inner frame) Front axle actuator G110 (on left front body mount) Hot in run Hot in run & start Ign1 fuse 10a Instrument panel cluster Left i/p fuse block (lower left side of dash) Logic Pnk Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt) S165 (in engine harness) Splice pack sp205 (left side of dash) Transfer case shift switch (left front of transfer case) Transmission control module (w/ allison trans) (left front of engine compt) Underhood fuse block (left side of engine compt, near battery) Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado 2001 3500: 73 (left front of engine compt) (w/ allison trans) transmission control module (left front of engine compt) powertrain control module (gas engines) or engine control module (diesel) (on left front body mount) g110 (under left side of dash) data link connector (w/ allison transmission) +8v ref +8v ref out 2-hi ind 4-hi ind 4-lo ind 4wd fuse 15a 4wd ind lamp 4wd sw (lo) 4wd sw sig 4wd whl lock Atc fuse 20a Auxiliary battery relay Body relay block (under c1 C10 C11 C12 C13 C14 C15 C16 Channel-a Channel-b Channel-c Channel-p Class ii data Ctrl D10 D11 D12 D13 D14 D15 D16 Dsl (ecm) gas (pcm) Encoder logic Encoder motor Encoder rtn Front axle actuator Ft axle ctrl G110 (on left front body mount) G203 (upper left kick panel) Gnd Hot at all times Hot in run Hot in run & start Ign 3 (run) Ign1 fuse 10a Illumination lamp (2) Instrument panel cluster Interior lights system Left i/p fuse block (lower left side of dash) Left side of dash) Logic Module gnd Motor (ccw) Motor (cw) Nca Neutral ind Pnk Red S165 (in engine harness) Shift motor Solid state Splice pack sp203 Splice pack sp205 (left side of dash) Transfer case shift control module (behind headlamp switch) Transfer case shift control switch Underhood fuse block (left side of engine compt, near battery)
8.1L 8.1L VIN G, A/T Wiring Diagram, Allison for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for 8.1L VIN G, A/T Wiring Diagram, Allison for Chevrolet Cab & Chassis Silverado 2001 3500: 87 (in engine harness) s164 (right rear of engine block) g103 12 volt ref 4wd circuit (transfer case controls) 4wd low sig A4 c1 Allison transmission Battery Body relay block (under left end of dash) Brake fuse 10a C1 c9 C1 d8 C1 vss adapter (4wd) (left side of trans) Class 2 data Class 2 serial data Data link connector (under left side of dash) Delivd torque Delivered torque sig Driver information center Ecm b fuse 20a Engine controls system (power take off switch) Exterior lights system Force motor solenoids Ground Hot at all times Hot in run Hot in run & start Ign 0 fuse 10a Ignition Input speed sensor Instrument panel cluster (ipc) Iss high Iss low Left i/p fuse block (lower left side of dash) Low ref Malfunction indicator lamp Mil control Mil signal On/off sol a On/off sol b On/off sol c On/off solenoids Orn Park/neutral position switch (left side of transmission) Pcs a high Pcs a low Pcs b high Pcs b low Pnk Powertrain control module (left front of engine compt) Pressure switch manifold Pto status Red Reqst torque Requested torque sig Rev Reverse sig S103 Sig hi-front Signal high - front Splice pack sp205 (left side of dash) Stoplamp switch (on brake pedal bracket) Sump temper- ature sensor Tcc brake sw Tcc lockup solenoid Tcc pwm Tcc sol Tfp signal a Tfp signal b Tfp signal c Tft signal Torque response sig Tr signal a Tr signal b Tr signal c Tr signal p Trans id Trans mil request Transmission control module (left front of engine compt) Trq response Tss return Tss signal Turbine speed sensor 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 high Vss low Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado 2001 3500: 27 (w/ allison transmission) 4wd fuse 15a 4wd indicator lamp A4 c1 Auxiliary battery relay Body relay block (under left side of dash) C9 c1 D2 c1 D8 c1 Data link connector (under left side of dash) Dsl(ecm) gas (pcm) Electronic brake control module (on left side of inner frame) Front axle actuator G110 (on left front body mount) Hot in run Hot in run & start Ign1 fuse 10a Instrument panel cluster Left i/p fuse block (lower left side of dash) Logic Pnk Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt) S165 (in engine harness) Splice pack sp205 (left side of dash) Transfer case shift switch (left front of transfer case) Transmission control module (w/ allison trans) (left front of engine compt) Underhood fuse block (left side of engine compt, near battery) Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado 2001 3500: 73 (left front of engine compt) (w/ allison trans) transmission control module (left front of engine compt) powertrain control module (gas engines) or engine control module (diesel) (on left front body mount) g110 (under left side of dash) data link connector (w/ allison transmission) +8v ref +8v ref out 2-hi ind 4-hi ind 4-lo ind 4wd fuse 15a 4wd ind lamp 4wd sw (lo) 4wd sw sig 4wd whl lock Atc fuse 20a Auxiliary battery relay Body relay block (under c1 C10 C11 C12 C13 C14 C15 C16 Channel-a Channel-b Channel-c Channel-p Class ii data Ctrl D10 D11 D12 D13 D14 D15 D16 Dsl (ecm) gas (pcm) Encoder logic Encoder motor Encoder rtn Front axle actuator Ft axle ctrl G110 (on left front body mount) G203 (upper left kick panel) Gnd Hot at all times Hot in run Hot in run & start Ign 3 (run) Ign1 fuse 10a Illumination lamp (2) Instrument panel cluster Interior lights system Left i/p fuse block (lower left side of dash) Left side of dash) Logic Module gnd Motor (ccw) Motor (cw) Nca Neutral ind Pnk Red S165 (in engine harness) Shift motor Solid state Splice pack sp203 Splice pack sp205 (left side of dash) Transfer case shift control module (behind headlamp switch) Transfer case shift control switch Underhood fuse block (left side of engine compt, near battery)
WARNING SYSTEMS Warning System Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Warning System Wiring Diagrams for Chevrolet Cab & Chassis Silverado 2001 3500: 69 (on lower left side of dash, below steering column) body control module A11 A12 B10 B11 Base Battery Body junction block Body wiring harness junction block (under left side of dash, near kick panel) C1 f2 C10 C11 Cgo dr jmb sw in Cruise fuse 10a Door jamb sw in Exterior lights F10 Fuse block G200 (upper left kick panel) G300 (under driver's seat) G998 (rear corner of right rear window) Ground Hdlmp rly cntrl Headlamp & panel dimmer switch Hot at all times Hot in run Hot in run or start Hot with park lights on Ign 1 fuse 10a Ignition 1 Ignition 3 Instrument cluster Int prk fuse 10a Key in ign Key-in ignition switch Left cargo door ajar switch Left door contactor Left liftgate ajar switch Left mini wedge switch Left power window/ door lock switch Left turn input Liftglass ajar switch Logic Nca Park lights in Pnk Pnk/ Powertrain control module (pcm) (left front of engine compartment) Rear window wiper module Right cargo door ajar switch Right door contactor Right liftgate ajar switch Right turn input S410 S411 Seat belt ind Seat belt input Seat belt switch (on driver's seat belt buckle) Serial data Sp203 Sp205 (left side of dash) Sp410 Tan Tbc fuse 10a Turn signal/ mulitfunction switch Underhood junction block Uplevel Utility w/cargo doors Utility w/o cargo doors
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500 List of elements for Front Wiper/Washer Wiring Diagram for Chevrolet Cab & Chassis Silverado 2001 3500: 24 (in forward lamp harness) s100 (left front of engine) g110 (left radiator support bracket) g108 24,000 ohms Fuse block (on lower left side of dash) High Hot in acc & run Lo pulse Mist Mux 1 Mux 2 Nca Off Pnk Pulse Red Resistance values: minimum delay; 39,000, 82,000, 150,000, 270,000 maximum delay; 680,000 Underhood junction block (at left side of engine compartment, near battery) W/w pmp fuse 15a Wash Windshield washer pump (in washer fluid reservoir) Windshield wiper motor module (under cowl, near wiper arms) Windshield wiper/ washer switch Ws wiper fuse 25a
