ENGINE PERFORMANCE – Chevrolet Silverado 2500 HD WT 2014 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

6.0L VIN B

6.0L VIN B, Engine Performance Wiring Diagram (1 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (1 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (on lower left front of engine) g102
• 175a
• 4wd low sig
• 5 volt ref 3
• 5-volt ref 1
• 5-volt ref 4
• A/c sens sig
• Air conditioning system
• Anti-lock brakes system
• App sens 1 sig
• App sens 2 sig
• Axle sw sig
• B+ volt
• Batt pos
• Brake sw sig
• Charge ind sig
• Cng sw 12
• Compr cltch rly ctrl
• Computer data lines system
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Evap vent sol ctrl
• Evaporative emissions (evap) canister vent solenoid valve (under rear of vehicle)
• Exterior lights system
• Fp rly ctrl
• Fuel pmp relay
• Fuel pump fuse 20 25a
• G103 (top rear of engine)
• G111
• Gnd
• High spd data bus +
• High spd data bus -
• Hot at all times
• Iat sens sig
• Ignition 1 volt
• Inlet press sens sig
• Intake air temperature signal modification module (left front of engine compt)
• J106
• J185
• Low ref
• Maf sens sig
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• Mil ctrl
• Park/neutral sig
• Pnk
• Primary rly ctrl
• Pwtn rly ctrl
• Starting/ charging system
• Starting/charging system
• Str enable rly ctrl
• Tan
• Tan/red
• To pwr/trn relay (diagram 2 of 10)
• Transmissions system
• Underhood fuse block (left side of engine compt)
• Underhood fuse holder (on positive battery terminal)
• Vehicle spd sig
• Wakeup serial data
• X189
• X300
• X420

6.0L VIN B, Engine Performance Wiring Diagram (2 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (2 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• Accelerator pedal position (app) sensor (above accelerator pedal)
• Ecm- batt fuse 12 10a
• Ecm- ign fuse 56 15a
• Ecm/throt cont fuse 5 15a
• Eng fuse 4 15a
• Evaporative emissions (evap) canister purge solenoid valve (on intake manifold)
• From fuel pmp relay (diagram 1 of 10)
• G300 (below driver's door, on body mount)
• Hot w/ run/crnk relay energized
• J300
• Pnk
• Pnk a
• Pwr/ trn relay
• Secondary fuel pump (fp) relay (w/ dual fuel tank) (left side of engine compt)
• Tan
• Tcm- batt fuse 14 15a
• Throttle inlet absolute pressure sensor (on throttle body)
• To o2-a snsr fuse 18 (diagram 7 of 10)
• Underhood fuse block (left side of engine compt)
• W/ two speed push button & electronic shift control transfer case
• W/o two speed push button & electronic shift control transfer case
• X109
• X205
• X300

6.0L VIN B, Engine Performance Wiring Diagram (3 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (3 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (lower left side of dash) left i/p junction block
• Alternative fuel pressure sensor
• Aux hvac- ign fuse 48 1oa
• Cng high pressure regulator temperature sensor
• Cng tank temperature sensor (part of cng fuel tank assembly)
• Computer data lines system
• G201 (upper left corner of dash)
• Gnd
• Ground distribution system
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Instrument panel cluster (ipc)
• Ipc fuse 46 10a
• J191
• J220 (w/ steering wheel heater) pnk
• Lo bus
• Logic
• Low oil pressure ind
• Malfunction indicator lamp
• Pnk
• Power distribution system
• Underhood fuse block (left side of engine compt)
• W/ two speed push button & electronic shift control transfer case
• W/o two speed push button & electronic shift control transfer case
• X109

6.0L VIN B, Engine Performance Wiring Diagram (4 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (4 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• 5-volt out
• 5-volt ref sig
• Alternative fuel enable relay
• Alternative fuel fuse holder 1
• Alternative fuel fuse holder 2
• Alternative fuel relay block
• Alternative fuel system data connector
• Batt pos out cng
• Batt pos vol
• Cng 1 fuse 25a
• Cng 2 fuse 5a
• Cng cut-off solenoid valve 1 (part of cng regulator)
• Cng cut-off solenoid valve 2 (part of cng fuel tank assembly)
• Cng sw 12 volt sig
• Cng tank temp out
• Cng tank temp sens sig
• Cut-off sol valve 1
• Cut-off sol valve 2
• Fuel pump disable module (top rear of cng regulator mounting bracket)
• G111
• Ground
• Hot at all times
• J183
• J184
• J185
• J190
• Lvl sens sig (out)
• Oem fuel pump vol (in)
• Red
• X178

6.0L VIN B, Engine Performance Wiring Diagram (5 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (5 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (fuel injectors 1, 3, 5 & 7: top of left cylinder bank rocker cover) (fuel injectors 2, 4, 6 & 8: top of right cylinder bank rocker cover) alternative fuel injectors
• 5-volt output
• Alternative fuel enable relay
• Alternative fuel enable rly
• Alternative fuel inj 1 ctrl
• Alternative fuel inj 2 ctrl
• Alternative fuel inj 3 ctrl
• Alternative fuel inj 4 ctrl
• Alternative fuel inj 5 ctrl
• Alternative fuel inj 6 ctrl
• Alternative fuel inj 7 ctrl
• Alternative fuel inj 8 ctrl
• Alternative fuel inj ground
• Cng control module (left front of engine compt)
• Cng inj ground
• Cng sw 12 volt signal
• Cng tank cut-off 2 ctrl
• Cng tank loc 1 off ctrl
• Cng tank press input
• Cng tank temperature input
• Coolant temp input
• Data bus (+)
• Data bus (-)
• Fuel pressure input
• Fuel temp sensor input
• G111
• Ground
• J185
• J186
• J189
• Lines system computer data
• Oem inj 1 input
• Oem inj 1 output
• Oem inj 3 in
• Oem inj 3 out
• Oem inj 4 in
• Oem inj 4 out
• Oem inj 5 out
• Oem inj 6 out
• Oem inj 7 out
• Oem inj 8 out
• Oem inj in 5
• Oem inj in 6
• Oem inj in 7
• Oem inj in 8
• Oem inj pos vol bank 2
• Oem inj pos voltage bank 1
• Oem injector 2 input
• Oem injector 2 output
• Pnk
• Pwr
• Red
• Serial k
• Sw batt pos
• Tan
• Used) (not
• X160
• X161

6.0L VIN B, Engine Performance Wiring Diagram (6 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (6 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (fuel injectors 1, 3, 5 & 7: top of left cylinder bank) (fuel injectors 2, 4, 6 & 8: top of right cylinder bank) fuel injectors
• (left front of engine compt, near fan shroud) engine control module (ecm)
• Alternative fuel low alarm
• Alternative fuel rail temperature pressure sensor (mounted on engine left bank alternative fuel rail)
• Fuel type select switch
• G111
• Ic 1 ctrl
• Injector 1 ctrl
• Injector 2 ctrl
• Injector 3 ctrl
• Injector 4 ctrl
• Injector 5 ctrl
• Injector 6 ctrl
• Injector 7 ctrl
• Injector 8 ctrl
• J181
• J185
• J192
• J193
• Pnk
• Tan
• Vehicle speed sensor (vss) (on transfer case tailshaft housing)
• X160
• X161
• X181
• X182
• X183
• X184
• X185
• X186
• X187
• X188

6.0L VIN B, Engine Performance Wiring Diagram (7 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (7 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (on fuel pump & sender assembly)
• Engine coolant temperature (ect) sensor (on top of engine)
• From ecm/throt cont fuse 5 (diagram 2 of 10)
• Front fuel pump & sender assembly (in front fuel tank)
• Fuel tank pressure (ftp) sensor
• G300 (below driver's door, on body mount)
• Hot at all times
• I/p fuse block (left side of dash)
• Inj-a fuse 24 20a
• Inj-b fuse 13 20a
• J300
• J331 (in chassis harness)
• Lt stop trn fuse 6 15a
• O2-a snsr fuse 18 10a
• O2-b snsr fuse 8 10a
• Pnk
• Rear fuel pump & sender assembly (w/ dual fuel tank) (in rear fuel tank)
• Rt stop trn fuse 8 15a
• Tan
• Underhood fuse block (left side of engine compt)
• X181
• X300
• X420

6.0L VIN B, Engine Performance Wiring Diagram (8 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (8 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (in ignition coil jumper harness, 5 cm from x111 breakout)
• (lower left side of dash) body control module (bcm)
• (pin 18 to 21 not used)
• (pin 19 to 25 not used)
• (upper left side of engine) ignition coils
• 5 volt ref 1
• 5 volt ref 3
• 5v ref
• Bpp sens sig
• Brake pedal position sensor
• Ect sens sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Evap ctrl
• Fuel tank sig
• G102 (on lower left front of engine)
• G201 (upper left corner of dash)
• Gen sig
• Gnd
• Ho2s ctrl
• Ho2s hi sig
• Ho2s low sig
• J107 (in ignition coil pnk jumper harness, between ignition coils 5 & 7)
• J109
• Low ref
• Map sens sig
• Nca
• Plug spark
• Pnk
• Red
• Sig snsr
• Starting/ charging system
• Tan
• Tos sig
• Transmissions system
• Vol sply
• Vss hi sig
• Vss low sig
• W/ two speed push button & electronic shift control transfer case
• W/o two speed push button & electronic shift control transfer case
• X109
• X111
• X205

6.0L VIN B, Engine Performance Wiring Diagram (9 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (9 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (between ignition coils 4 & 2)
• (in ignition coil jumper harness, 5 cm from x111 breakout)
• (upper right side of engine) ignition coils
• Camshaft position (cmp) sensor (front of engine, above crank pulley)
• Crankshaft position (ckp) sensor (right rear of engine)
• G102 (on lower left front of engine)
• Heated oxygen sensor (ho2s) bank 1 sensor 2 (downstream of left catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 2 (downstream of right catalytic converter)
• J110
• J112
• Knock sensor (ks) 1 (lower left side of engine)
• Knock sensor (ks) 2 (lower right side of engine)
• Manifold absolute pressure (map) sensor (on top of intake manifold)
• Nca
• Plug spark
• Pnk
• Red
• Tan
• X112
• X113

6.0L VIN B, Engine Performance Wiring Diagram (10 of 10) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN B, Engine Performance Wiring Diagram (10 of 10) for Chevrolet Silverado 2500 HD WT 2014:

• (front of engine) camshaft (cmp) actuator solenoid valve
• (info not available)
• 5-volt ref 1
• 5-volt ref 2
• 5-volt ref 4
• 5v ref
• Camshaft ctrl
• Ckp sens sig
• Cmp sens sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• G103 (top rear of engine)
• Gnd
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (upstream of left catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (upstream of right catalytic converter)
• Ho2s heater low
• Ho2s high sig
• Ho2s low ctrl
• Ho2s low sig
• Ic 2 ctrl
• Ic 3 ctrl
• Ic 4 ctrl
• Ic 5 ctrl
• Ic 6 ctrl
• Ic 7 ctrl
• Ic 8 ctrl
• Ignition 1 volt
• J122
• Ks 1 sig
• Ks 2 sig
• Low ref
• Nca
• Oil press sig
• Pnk
• Pnk d
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan
• Tan a
• Throttle body
• Tp sens 1 sig
• Tp sens 2 sig
• X112

6.0L VIN G

6.0L VIN G, Engine Performance Wiring Diagram (1 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (1 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (below intake manifold) valve lifter oil manifold (vlom) assembly
• (on lower left front of engine) g102
• 175a
• 4wd low sig
• 5 volt ref 3
• 5-volt ref 1
• 5-volt ref 4
• A/c sens sig
• Air conditioning system
• Anti-lock brakes system
• App sens 1 sig
• App sens 2 sig
• Axle sw sig
• B+ volt
• Brake sw sig
• Charge ind sig
• Compr cltch rly ctrl
• Computer data lines system
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Evap vent sol ctrl
• Evaporative emissions (evap) canister vent solenoid valve (under rear of vehicle)
• Exterior lights system
• Fp rly ctrl
• Fuel pmp relay
• Fuel pump fuse 20 25a
• G103 (top rear of engine)
• High spd data bus +
• High spd data bus -
• Hot at all times
• Iat sens sig
• Ignition 1 volt
• Inlet press sens sig
• J106
• Low ref
• Maf sens sig
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• Mil ctrl
• Park/neutral sig
• Pnk
• Pnk d
• Primary rly ctrl
• Pwtn rly ctrl
• Starting/charging system
• Str enable rly ctrl
• Tan
• Tan a
• Throttle inlet absolute pressure sensor (on throttle body)
• Transmissions system
• Underhood fuse block (left side of engine compt)
• Underhood fuse holder (on positive battery terminal)
• Vehicle spd sig
• Wakeup serial data
• X300

6.0L VIN G, Engine Performance Wiring Diagram (2 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (2 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• Accelerator pedal position (app) sensor (above accelerator pedal)
• Ecm- batt fuse 12 10a
• Ecm- ign fuse 56 15a
• Ecm/throt cont fuse 5 15a
• Electric shift control transfer case
• Eng fuse 4 15a
• Evaporative emissions (evap) canister purge solenoid valve (on intake manifold)
• G300 (below driver's door, on body mount)
• Hot at all times
• Hot w/ run/crnk relay energized
• J300
• Pnk
• Pnk a
• Pwr/ trn relay
• Secondary fuel pump (fp) relay (w/ dual fuel tank) (left side of engine compt)
• Tan
• Tcm- batt fuse 14 15a
• To inj-b fuse 13 (diagram 5 of 6)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (vss) (on transfer case tailshaft housing)
• W/ two speed push button &
• W/o two speed push button &
• X109
• X205
• X300

6.0L VIN G, Engine Performance Wiring Diagram (3 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (3 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (lower left side of dash) left i/p junction block
• (on fuel pump & sender assembly)
• 10 series
• Aux hvac- ign fuse 48 1oa
• Computer data lines system
• Electric shift control transfer case
• Except 10 series
• Front fuel pump & sender assembly (in front fuel tank)
• Fuel tank pressure (ftp) sensor
• G201 (upper left corner of dash)
• G300 (below driver's door, on body mount)
• Gnd
• Ground distribution system
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Instrument panel cluster (ipc)
• Ipc fuse 46 10a
• J220
• J300
• J331 (in chassis harness)
• Lo bus
• Logic
• Low oil pressure ind
• Malfunction indicator lamp
• Pnk
• Power distribution system
• Rear fuel pump & sender assembly (w/ dual fuel tank) (in rear fuel tank)
• Underhood fuse block (left side of engine compt)
• W/ steering wheel heater
• W/ two speed push button &
• W/o steering wheel heater
• W/o two speed push button & electric shift control transfer case
• X109
• X131
• X300

6.0L VIN G, Engine Performance Wiring Diagram (4 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (4 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (in ignition coil jumper harness, between ignition coils
• (pin 18 to 21 not used)
• (pin 19 to 25 not used)
• (upper left side of engine) ignition coils
• (upper right side of engine) ignition coils
• 4 & 2)
• 5 volt ref 1
• 5 volt ref 3
• 5v ref
• Body control module (bcm) (lower left side of engine)
• Bpp sens sig
• Brake pedal position (bpp) sensor
• C red
• Computer data lines system
• D pnk
• Data bus (+)
• Data bus (-)
• Ect sens sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Evap ctrl
• Fuel lvl sig
• Fuel tank sig
• G102 (on lower left front of engine)
• Generator sig
• Ho2s ctrl
• Ho2s hi sig
• Ho2s low sig
• J107 (in ignition coil pnk jumper harness, between ignition coils 5 & 7)
• J109 (in ignition coil jumper harness, 5 cm from x111 breakout)
• J110
• J112 (in ignition coil jumper harness, 5 cm from x111 breakout)
• Low ref
• Map sens sig
• Nca
• Plug spark
• Pmry sen sig
• Pnk
• Red
• Sig snsr
• Starting/ charging system
• Tan
• Tos sig
• Transmissions system
• Vol sply
• Vss hi sig
• Vss low sig
• W/ two speed push button & electric shift control transfer case
• W/o two speed push button & electric shift control transfer case
• X109
• X111
• X113
• X205

6.0L VIN G, Engine Performance Wiring Diagram (5 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (5 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (top of right cylinder bank) fuel injectors
• A pnk
• Camshaft position (cmp) sensor (front of engine, above crank pulley)
• Crankshaft position (ckp) sensor (right rear of engine)
• Engine coolant temperature (ect) sensor (on top of engine)
• From ecm/throt cont fuse 5 (diagram 2 of 6)
• Heated oxygen sensor (ho2s) bank 1 sensor 2 (downstream of left catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 2 (downstream of right catalytic converter)
• Inj-a fuse 24 20a
• Inj-b fuse 13 20a
• Manifold absolute pressure (map) sensor (on top of intake manifold)
• Nca
• O2-a snsr fuse 18 10a
• O2-b snsr fuse 8 10a
• Pnk
• Tan
• Underhood fuse block (left side of engine compt)
• X112

6.0L VIN G, Engine Performance Wiring Diagram (6 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (6 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (front of engine) camshaft position (cmp) actuator solenoid valve
• (top of left cylinder bank) fuel injectors
• 5-volt ref 1
• 5-volt ref 2
• 5-volt ref 4
• A pnk
• B tan
• C tan
• Camshaft ctrl
• Ckp sens sig
• Cmp sens sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine oil pressure (eop) sensor (top rear of engine)
• G103 (top rear of engine)
• Gnd
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (upstream of left catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (upstream of right catalytic converter)
• Ho2s heater low
• Ho2s high sig
• Ho2s low ctrl
• Ho2s low sig
• Ic 1 ctrl
• Ic 2 ctrl
• Ic 3 ctrl
• Ic 4 ctrl
• Ic 5 ctrl
• Ic 6 ctrl
• Ic 7 ctrl
• Ic 8 ctrl
• Ignition 1 volt
• Injector 1 ctrl
• Injector 2 ctrl
• Injector 3 ctrl
• Injector 4 ctrl
• Injector 5 ctrl
• Injector 6 ctrl
• Injector 7 ctrl
• Injector 8 ctrl
• J106
• Knock sensor (ks) 1 (lower left side of engine)
• Knock sensor (ks) 2 (lower right side of engine)
• Ks 1 sig
• Ks 2 sig
• Low ref
• Nca
• Pnk
• Pnk d
• Press sens sig
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan
• Tan a
• Throttle body
• Tp sens 1 sig
• Tp sens 2 sig
• X112

6.6L VIN 8

6.6L VIN 8, Engine Performance Wiring Diagram (1 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (1 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (above reductant tank) reductant pressure sensor
• (under vehicle, above reductant tank) reductant purge solenoid valve
• 5 volt ref
• A/c clutch rly ctrl
• Air conditioning system
• Air flow sens sig
• App sig 1
• App sig 2
• Cf ctrl rly spd sig
• Computer data lines system
• Cooling fan spd sig
• Cooling fans system
• Cooling fans system starting/charging system cooling fans system transmissions system
• Cruise/etc/tcc brk sig
• Def smart pump ctrl
• Def valve high ctrl
• Def valve low ctrl
• Duty cycle sig
• Egt sens 2 sig
• Egt sens 3 sig
• Egt sens 4 sig
• Engine control module (ecm) (left side of engine compt, near fan shroud)
• Engine indicator ctrl
• Exhaust differential sensor (on frame rail above catalytic converter)
• Exhaust temperature sensor 2 (in exhaust, downstream of catalytic converter)
• Exhaust temperature sensor 3 (in exhaust, middle of diesel particulate filter)
• Exhaust temperature sensor 4 (in exhaust, near rear of diesel particulate filter)
• Exterior lights system
• Fuel level sens
• Fwd lock ind
• Fwd lock sig
• Generator turn on sig
• Ign 1 volt
• Inj high ctrl
• Inj low ctrl
• Low ref
• Mass air flow (maf)/intake air temperature (iat) sensor
• Nca
• Park/neutral sig
• Pnk
• Pressure sens sig
• Pressure sens sig 1
• Pump sply volt
• Replicated tos sig
• Rly coil ctrl
• Ser data +
• Ser data -
• Starter enable rly ctrl
• Starting/charging system
• Tan
• Temp sens sig
• Transmissions system
• Valve low ctrl
• Wait to start ind ctrl
• Wakeup serial data
• X300
• X395

6.6L VIN 8, Engine Performance Wiring Diagram (2 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (2 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (above reductant tank) reductant pump
• (in chassis harness) (w/ dual fuel tank) j313
• (in exhaust, rear of catalytic converter) reductant injector
• (in front fuel tank) primary fuel level sensor
• (near compressor, on a/c high pressure hose) (if equipped) a/c refrigerant pressure sensor
• (right rear of engine) exhaust after treatment fuel injector
• (under vehicle, above reductant tank) reductant line heater
• Accelerator pedal position (app) sensor (above accelerator pedal)
• B10
• C10
• Computer data lines system
• Electric shift control transfer case
• G103 (top rear of engine)
• Gnd
• Hi spd gmlan ser data +
• Hi spd gmlan ser data -
• Ign volt
• Ind ctrl
• Instrument panel cluster (ipc)
• J105
• J106
• Logic
• Low engine oil pressure ind
• Malfunction indicator lamp
• Mil ctrl
• Nitrogen oxides sensor 1 (in exhaust, top left rear side of engine)
• Nitrogen oxides sensor 2 (in exhaust, middle of diesel particulate filter)
• Pnk
• Red
• Reductant fluid reservoir assembly
• Reductant sensor module (above reductant tank)
• Reductant tank heater
• Sens 1 gnd
• Sens 1 sply volt
• Sens 2 gnd
• Ser data
• Tan
• Tan c
• W/ two speed active push button &
• W/o two speed active push button &
• Wait to start ind
• X107
• X109
• X205
• X300
• X395

6.6L VIN 8, Engine Performance Wiring Diagram (3 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (3 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (right front lower side of engine block) g109
• (right front side of engine) glow plug control module (gpcm)
• 125a
• 175a
• Charge air cooler inlet temperature sensor (intake manifold)
• Charge air cooler outlet temperature sensor (top right front of engine)
• Computer data lines system
• Exhaust gas recirculation cooler bypass solenoid valve (if equipped) (top right rear of engine)
• G109 (right front lower side of engine block)
• Glow plugs (above respective cylinders)
• Gnd
• Hi spd gmlan ser data +
• Hi spd gmlan ser data -
• Hot at all times
• Htr ctrl
• Iah comm 1
• Iah comm 2
• Iah current sig
• Iah dig sig
• Iah fdbk sig
• Iah heart beat sig
• Iah sw on/off sig
• Iah temp sig
• Iah volt feedback sig
• Iah volt sig
• Ign 1 volt
• Intake air heater (iah) (left front of engine )
• J161
• J162
• Line htr ctrl
• Manifold absolute pressue (map) sensor (on top of intake manifold)
• Nca
• Plug 1 ctrl
• Plug 2 ctrl
• Plug 3 ctrl
• Plug 4 ctrl
• Plug 5 ctrl
• Plug 6 ctrl
• Plug 7 ctrl
• Plug 8 ctrl
• Pnk
• Pnk a
• Power distribution system
• Pump htr ctrl
• Red
• Sens 1 gnd
• Sens 1 sply volt
• Sens 2 gnd
• Sens 2 sply volt
• Tan
• Underhood fuse holder (right side of firewall)
• Wakeup ser data
• X107

6.6L VIN 8, Engine Performance Wiring Diagram (4 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (4 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (in exhaust, upstream of catalytic converter) exhaust temperature sensor 1
• (in rear fuel tank) (w/ dual fuel tank) secondary fuel level sensor
• (left front of engine compt, near fan shroud) engine control module (ecm)
• (mounted on left side of fuel injection pump) fuel temperature sensor 1
• (mounted on left side of fuel rail) fuel temperature sensor 2
• (right front lower side of engine block)
• (right side of engine) water in fuel sensor
• (top front center of engine)
• (top left rear of engine) fuel rail pressure (frp) sensor
• 175a
• 5 volt ref
• Act ctrl close
• Act ctrl open
• Cac temp sens sig
• Ckp sens sig
• Cmp sens sig
• Ctrl cyl 2
• Ctrl cyl 3
• Ctrl cyl 5
• Ctrl cyl 8
• Ect sens sig
• Egr valve sens sig
• Egrt sens 1 sply volt
• Egrv mtr high sig
• Egrv mtr low sig
• Egt sens 1 sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine coolant temperature (ect) sensor
• Fuel level sens sig
• Fuel temp 1 sig
• Fuel temp sig
• G109
• Gnd
• Hot at all times
• Hummudity sen sig
• J161
• Low ref
• Mtr close ctrl
• Mtr open ctrl
• Nca
• Oil pressure sens sig
• Pnk
• Pos sens sig
• Pos sens sig1
• Power distribution system
• Pressure sens rtn
• Pressure sens sig
• Pressure sw sig
• Pump mtr gnd
• Sens sig
• Shutdown sig
• Tan
• Temp 1 rtn
• Temp sens rtn
• Temp sens sig
• Throttle body
• Transmi- ssions system
• Underhood fuse holder (right side of firewall)
• Vol sply
• Water in fuel sens rtn
• Water in fuel sens sig
• X113
• X117
• X300

6.6L VIN 8, Engine Performance Wiring Diagram (5 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (5 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (between fuel tanks, on left frame rail) (w/ 31 series & rear auxiliary fuel tank) fuel pump
• (right front lower side of engine block) g109
• (top of right cylinder bank)
• (w/ ambulance upfitter sales package) engine coolant temperature (ect) sensor 2
• Camshaft position (cmp) sensor (front of engine, above crank pulley)
• Crankshaft position (ckp) sensor (front of engine, right of crank pulley)
• Dsl ecm fuse 12 30a
• Ecm batt fuse 11 15a
• Ecm ign fuse 53 15a
• Ecm/throt cont fuse 17 15a
• Eng fuse 3 15a
• Engine)
• Exhaust gas recirculation (egr) temperature sensor 2 (top right front of engine)
• Exhaust gas recirculation (egr) valve (on top right side of engine)
• Fuel filter pressure switch (middle right side of
• Fuel injector 2 (top of left cylinder bank)
• Fuel injector 3
• Fuel injector 4 (top of left cylinder bank)
• Fuel injector 5
• Fuel injector 8 (top of left cylinder bank)
• Fuel pump fuse 18 25a
• Fuel pump relay
• G103 (top rear of engine)
• G109 (right front lower side of engine block)
• G300 (below driver's door, on body mount)
• Hot at all times
• Hot w/ run/crnk relay 15 energized
• J105
• J130
• J160
• J161
• J162
• Nca
• Pnk
• Pwr/ trn relay
• Tan
• Trans ign 1 fuse 13 15a
• Underhood fuse block (left side of engine compt)
• W/ 2 speed electric & manual shift control transfer case
• W/o 2 speed electric & manual shift control transfer case
• X107

6.6L VIN 8, Engine Performance Wiring Diagram (6 of 6) for Chevrolet Silverado 2500 HD WT 2014

List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (6 of 6) for Chevrolet Silverado 2500 HD WT 2014:

• (left side of engine oil pan) engine oil level switch
• (lower left side of dash) body control module (bcm)
• (pins 33-40 not used)
• (pins 42-46 not used)
• (pins 49-64 not used)
• (right front lower side of engine block) g109
• 5 volt ref
• Anti-lock brakes system
• Brake pedal position (bpp) sensor
• Computer data lines system
• Dfi volt ctrl cyl 1
• Dfi volt ctrl cyl 4
• Dfi volt ctrl cyl 6
• Dfi volt ctrl cyl 7
• Dfi volt ctrl cyl 8
• Electric shift control transfer case
• Engine control module (ecm) (left side of engine compt, near fan shroud)
• Engine oil pressure (eop) sensor (lower left rear of engine)
• Exhaust gas recirculation (egr) temperature sensor 1 (top of right rear of engine)
• Fuel injector 1 (top of right cylinder bank)
• Fuel injector 6 (top of left cylinder bank)
• Fuel injector 7 (top of right cylinder bank)
• Fuel pressure regulator 1
• Fuel pressure regulator 2
• Fuel pump rly ctrl
• G109 (right front lower side of engine block)
• G110 (left front lower side of engine block)
• Gnd
• J160
• J161
• J164
• Low ref
• Multi-function intake air sensor
• Nca
• Oil level sw sig
• Pnk
• Sens volt ref
• Sol high sig
• Sol low sig
• Sol sply volt
• Tan
• Turbocharger vane position control solenoid valve (top rear of engine)
• Turbocharger vane position sensor (on left side of engine)
• Valve high ctrl
• Valve low ctrl
• Vehicle spd sig
• W/ two speed push button &
• W/o two speed push button &
• X107
• X109
• X110
• X113
• X205