ENGINE PERFORMANCE – Chevrolet Silverado 1500 2004 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L VIN X

4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Silverado 1500 2004

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Silverado 1500 2004:

• (below steering column) data link connector
• (bottom front of engine) crankshaft position sensor
• (right rear of engine block)
• +5v
• 3-2 ss
• A/c system
• A12
• Anti-lock brakes system
• B10
• B12
• Body control module (below steering column)
• Brk sw
• C10
• Ckp sig
• Cls 2 data
• Clutch sw
• Cmp
• Coolant lev
• D10
• E10
• E11
• Ect sig
• Engine oil pressure (eop) sensor
• G103
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Injectors
• Left i/p fuse block
• Low ref
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Oil lev
• Pcm1 fuse 15a
• Pcmb fuse 20a
• Pnk
• Pnk b
• Pnk d
• Pnk e
• Pnk h
• Pnk j
• Pnk l
• Powertrain control module (pcm) (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• Rly ctrl
• S103
• S110
• Sens gnd
• Sensor sig
• Sp205 (in i/p harness)
• Starting system
• Tan
• Torque sig
• Underhood junction block

4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Silverado 1500 2004

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Silverado 1500 2004:

• (left rear of engine) g104
• (not used)
• Engine coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (rear side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (in fuel tank)
• Fuel pump relay
• G103 (right rear of engine)
• G104 (left rear of engine)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Knock sensor (rear of engine block)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S102
• S103
• S312
• Tan
• Throttle position sensor (on throttle body assy)
• Under- hood fuse block

4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Silverado 1500 2004

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Silverado 1500 2004:

• (in chassis harn)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brake fuse 10a
• C12
• Camshaft position sensor (in distributor)
• Clutch start switch (top of pedal bracket)
• Cruise control system
• E11
• Evaporative emissions canister purge solenoid (right front side of engine)
• Evaporative emissions canister vent solenoid (right front side of fuel tank)
• Fuel tank pressure sensor (in fuel tank)
• G103 (right rear of engine)
• Gnd
• Hot in accy, run & start
• Hot in run
• Iat sensor
• Ign
• Ign0 fuse 10a
• Instrument cluster system
• Intake air temperature (iat)/mass airflow (maf) sensor (in air induction tube)
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk d
• Power distribution system
• Red
• Red/
• Rev
• S103
• S150
• Signal
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tan b
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood junction block
• Underhood fuse block
• Vehicle speed sensor (left rear of transmission)

4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Silverado 1500 2004

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Silverado 1500 2004:

• (lower right front of eng block)
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low
• 4ws fuse 15a
• A/c clu
• A/c system
• Anti-lock brake system (speed signal)
• Anti-lock brakes system
• B11
• Coil driver
• Coil wire
• Crank fuse 10a
• Crank voltage
• Cruise control system a/c system
• Cruise eng
• Distributor
• Evap vent ctrl
• Fld sig
• Front axle actuator (right side of center on axle housing)
• Frt axle sw
• Fuel lev
• Fuel sig ctrl
• G102
• G103 (right rear of engine)
• Gen l
• Gnd
• Hot at all times
• Hot in run & start
• Hot in start
• Htr low ctrl
• Iac coil hi
• Iac coil lo
• Iat sig
• Ic timing ctrl
• Idle air control valve (on throttle body)
• Ign
• Ign feed
• Ignition coil
• Ignition control module (right rear of engine)
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Ipc/dic fuse 10a
• Logic
• Low ref
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Oil press sig
• Pc sol hi
• Pc sol lo
• Pmp rly ctrl
• Pnk
• Pnk a
• Powertrain control module (pcm) (left front of engine compt)
• Prnd c
• Red
• Rpm out
• S103
• Sens gnd
• Sens sig
• Sol ctrl
• Starting/ charging system
• Starting/charging system
• Sw sig
• Tan
• Tcc pwm
• Tcc sol ctrl
• Tft sens sig
• Timing
• Torque sig
• Tp sig
• Trans rng a
• Trans- missions system
• Transfer case shift control module (left front of transaxle case)
• Under- hood junction block
• Vss high
• Vss low
• Vss out

4.8L VIN V

4.8L VIN V, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Body control module (below steering column)
• Brk sw sig
• C10
• Ckp sig
• Cls 2 data
• Cmp sig
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel comp sig
• G103 (right rear of engine)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lev sw sig
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block

4.8L VIN V, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004:

• (4l60)
• (4l80)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (left rear of engine) g104
• (not used)
• (right rear of engine)
• Coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (front of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (in fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (on underhood fuse block bracket)
• G103
• G103 (right rear of engine)
• G104 (left rear of engine)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Hot in run & start
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pcm1 fuse 15a
• Pnk
• Red
• S102
• S103
• S312
• Tan
• Under- hood fuse block
• Underhood fuse block

4.8L VIN V, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004:

• (4l60e)
• (4l60e) s
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brake fuse 10a
• C12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body)
• Evaporative emissions canister vent solenoid (right front side of fuel tank)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot at all times
• Hot in run
• Instrument cluster system
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S150
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Underhood fuse block
• Vehicle speed sensor (rear of transmission/ transfer case)

4.8L VIN V, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004:

• (behind accelerator pedal) accelerator pedal position sensor
• (in transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (right rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature (iat)/ mass airflow (maf) sensor (in air induction tube)
• Left i/p fuse block
• Not used
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block
• Veh stop fuse 15a

4.8L VIN V, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004:

• (in ignition coil jumper harness)
• (in injector jumper harness)
• (left rear of engine) g104
• (left side of engine) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Clu rly ctrl
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Logic
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block
• Vss high sig
• Vss low sig
• Vss out

5.3L VIN T

5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Body control module (below steering column)
• Brk sw sig
• C10
• Ckp sig
• Cls 2 data
• Cmp sig
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel comp sig
• G103 (right rear of engine)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lev sw sig
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block

5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004:

• (4l60)
• (4l80)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (left rear of engine) g104
• (not used)
• (right rear of engine)
• Coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (front of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (in fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (on underhood fuse block bracket)
• G103
• G103 (right rear of engine)
• G104 (left rear of engine)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Hot in run & start
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pcm1 fuse 15a
• Pnk
• Red
• S102
• S103
• S312
• Tan
• Under- hood fuse block
• Underhood fuse block

5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004:

• (4l60e)
• (4l60e) s
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brake fuse 10a
• C12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body)
• Evaporative emissions canister vent solenoid (right front side of fuel tank)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot at all times
• Hot in run
• Instrument cluster system
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S150
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Underhood fuse block
• Vehicle speed sensor (rear of transmission/ transfer case)

5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004:

• (behind accelerator pedal) accelerator pedal position sensor
• (in transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (right rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature (iat)/ mass airflow (maf) sensor (in air induction tube)
• Left i/p fuse block
• Not used
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block
• Veh stop fuse 15a

5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004:

• (in ignition coil jumper harness)
• (in injector jumper harness)
• (left rear of engine) g104
• (left side of engine) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Clu rly ctrl
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Logic
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block
• Vss high sig
• Vss low sig
• Vss out

5.3L VIN Z

5.3L VIN Z, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Body control module (below steering column)
• Brk sw sig
• C10
• Ckp sig
• Cls 2 data
• Cmp sig
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel comp sig
• G103 (right rear of engine)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lev sw sig
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block

5.3L VIN Z, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004:

• (4l60)
• (4l80)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (left rear of engine) g104
• (not used)
• (right rear of engine)
• Coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (front of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (in fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (on underhood fuse block bracket)
• G103
• G103 (right rear of engine)
• G104 (left rear of engine)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Hot in run & start
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pcm1 fuse 15a
• Pnk
• Red
• S102
• S103
• S312
• Tan
• Under- hood fuse block
• Underhood fuse block

5.3L VIN Z, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004:

• (4l60e)
• (4l60e) s
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brake fuse 10a
• C12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body)
• Evaporative emissions canister vent solenoid (right front side of fuel tank)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot at all times
• Hot in run
• Instrument cluster system
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S150
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Underhood fuse block
• Vehicle speed sensor (rear of transmission/ transfer case)

5.3L VIN Z, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004:

• (behind accelerator pedal) accelerator pedal position sensor
• (in transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (right rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature (iat)/ mass airflow (maf) sensor (in air induction tube)
• Left i/p fuse block
• Not used
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block
• Veh stop fuse 15a

5.3L VIN Z, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004:

• (in ignition coil jumper harness)
• (in injector jumper harness)
• (left rear of engine) g104
• (left side of engine) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Clu rly ctrl
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Logic
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block
• Vss high sig
• Vss low sig
• Vss out

6.0L VIN N

6.0L VIN N, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Silverado 1500 2004:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Body control module (below steering column)
• Brk sw sig
• C10
• Ckp sig
• Cls 2 data
• Cmp sig
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel comp sig
• G103 (right rear of engine)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lev sw sig
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block

6.0L VIN N, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Silverado 1500 2004:

• (4l60)
• (4l80)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (left rear of engine) g104
• (not used)
• (right rear of engine)
• Coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (front of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (in fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (on underhood fuse block bracket)
• G103
• G103 (right rear of engine)
• G104 (left rear of engine)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Hot in run & start
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pcm1 fuse 15a
• Pnk
• Red
• S102
• S103
• S312
• Tan
• Under- hood fuse block
• Underhood fuse block

6.0L VIN N, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Silverado 1500 2004:

• (4l60e)
• (4l60e) s
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brake fuse 10a
• C12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body)
• Evaporative emissions canister vent solenoid (right front side of fuel tank)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot at all times
• Hot in run
• Instrument cluster system
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S150
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Underhood fuse block
• Vehicle speed sensor (rear of transmission/ transfer case)

6.0L VIN N, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Silverado 1500 2004:

• (behind accelerator pedal) accelerator pedal position sensor
• (in transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (right rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature (iat)/ mass airflow (maf) sensor (in air induction tube)
• Left i/p fuse block
• Not used
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block
• Veh stop fuse 15a

6.0L VIN N, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Silverado 1500 2004:

• (in ignition coil jumper harness)
• (in injector jumper harness)
• (left rear of engine) g104
• (left side of engine) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Clu rly ctrl
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Logic
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block
• Vss high sig
• Vss low sig
• Vss out