TRANSMISSION – GMC Sierra 2500 HD SLT 2013 – SYSTEM WIRING DIAGRAMS

TRANSMISSION

6.0L VIN B

6.0L VIN B, A/T Wiring Diagram (1 of 2) for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN B, A/T Wiring Diagram (1 of 2) for GMC Sierra 2500 HD SLT 2013:

• (lower left side of dash) body control module
• (lower left side of dash) left i/p junction block
• (upper left corner of dash) g201
• 6.0l vin g
• Accy volt
• Automatic transmission
• Automatic transmission fluid temperature (tft) sensor
• Automatic transmission fluid temperature (tft) sensor signal
• Aux hvac- ign fuse 45 10a
• B8 x109
• Batt +
• Brake pedal position (bpp) sensor
• Computer data lines system
• Control solenoid valve assembly
• Driver information center (dic) display
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 6.0l vin g
• G103 (top rear of engine)
• G4 x5
• Gmlan data bus (+)
• Gmlan data bus (-)
• Gnd
• Ground distribution system
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign 1 volt
• Instrument cluster panel (ipc)
• J104 (in engine harness, 15 cm from engine control module connector breakout)
• J130 (w/ 2 speed transfer case)
• J220 (w/ steering wheel heater)
• Logic
• Low reference
• Park/neutral sig
• Pc solenoid 1 control
• Pc solenoid 2 control
• Pc solenoid 3 control
• Pc solenoid 4 control
• Pc solenoid 5 control
• Pnk
• Pressure control (pc) solenoid valve 1
• Pressure control (pc) solenoid valve 2
• Pressure control (pc) solenoid valve 3
• Pressure control (pc) solenoid valve 4
• Pressure control (pc) solenoid valve 5
• Replicated tos signal
• Sensor low ref
• Serial data bus (+)
• Serial data bus (-)
• Shift solenoid (ss) 1 control
• Shift solenoid (ss) 2 control
• Shift solenoid (ss) valve 1
• Shift solenoid (ss) valve 2
• Stop lamp sw sig
• Tan
• Tcm-batt fuse 14 10a
• To automatic transmission internal mode switch (ims) (diagram 2 of 2)
• Torque converter clutch (tcc) pressure control (pc) solenoid valve
• Torque converter clutch pressure control solenoid control
• Tos sig
• Tow/ haul ind
• Trans ign1 fuse 19 15a
• Transmission control module (tcm)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (vss) (on transfer case tailshaft housing)
• Volt reference
• Vss high sig
• Vss low sig
• X205

6.0L VIN B, A/T Wiring Diagram (2 of 2) for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN B, A/T Wiring Diagram (2 of 2) for GMC Sierra 2500 HD SLT 2013:

• (diagram 1 of 2)
• (in instrument panel harness, in transfer case shift control module connector breakout) j207
• (in steering column harness)
• (lower left side of dash) transfer case shift control module
• 12v ref
• A/t manual shift switch
• Acc volt
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission input shaft speed (iss) sensor
• Automatic transmission internal mode switch (ims)
• Automatic transmission output shaft speed (iss) sensor
• Automatic transmission shift lever
• Body control module (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Cruise control system
• From automatic transmission a
• Ftp switch 1 voltage
• Ftp switch 3 voltage
• Ftp switch 4 voltage
• Ftp switch 5 voltage
• G201 (upper left corner of dash)
• Gmlan serial data bus +
• Gmlan serial data bus -
• Gnd
• Input speed sensor (iss) signal
• J127
• J216
• J230
• Nca
• Output speed sensor (oss) signal
• Pnk
• Red
• Start
• Tan
• Tap up/ tap down sw sig
• Tow/ haul sw sig
• Tow/ haul switch
• Transmission control module (tcm)
• Transmission range switch sig a
• Transmission range switch sig b
• Transmission range switch sig c
• Transmission range switch sig p
• W/ 2 speed transfer case
• W/ electronic steering control
• W/o 2 speed transfer case
• X1 pnk
• X3 tan

6.0L VIN B, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN B, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2500 HD SLT 2013:

• (gas)
• (lower left side of dash) left i/p junction block
• 2 hi ind ctrl
• 2-hi ind
• 4 hi ind ctrl
• 4 lo ind ctrl
• 4-hi ind
• 4-lo ind
• 4wd ind
• 5 volt ref
• 8v sply
• Accy wakeup srl data
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle actr ctrl
• Axle sw sig
• B12
• Batt +
• Body control module (bcm) (lower left side of dash)
• C10
• Computer data lines system
• Diesel
• Dirtn sig
• Front axle actuator (0n front axle assembly)
• G102 (on lower left front of engine)
• G103 (diesel)
• G201 (upper left corner of dash)
• G4 pnk
• Gas
• Gmlan bus +
• Gmlan bus -
• Gnd
• Ground distribution system
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign 1 volt
• Incrmt encoder sig
• Instrument panel cluster (ipc)
• Interior lights system
• J105
• J130 (except 6.0l)
• J220 (w/ steering wheel heater)
• Left i/p junction block (lower left side of dash)
• Lo ref
• Logic
• Low ref
• Misc ign fuse 43 fuse 40 10a
• Mtr ctrl a
• Mtr ctrl b
• Neutral ind
• Neutral ind ctrl
• Pnk
• Power distribution system
• Pulse sig
• Right i/p junction block (in right end of dash)
• Ser data
• Shift motor
• Sw sig
• Tan
• Trans ig1 fuse 19 fuse 13 15a
• Transfer case encoder motor (on transfer case)
• Transfer case shift control module (lower left side of dash)
• Transfer case shift control switch (on top left of transfer case)
• Trec fuse 67 fuse 62 30a
• Underhood fuse block (left side of engine compt)
• Wiper/washer system
• X1 a3 pnk
• X109
• X110

6.0L VIN B, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN B, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra 2500 HD SLT 2013:

• (4.3l)
• (4.8l, 5.3l, 6.ol & 6.2l)
• (6.6l)
• (gas) (diesel)
• (lower left side of dash) left i/p junction block
• (top left rear of engine) g107
• (top rear
• 4.3l
• 4.8l, 5.3l, 6.0l vin j, 6.0l vin b & 6.2l
• 4wd ind
• 4wd low sig
• 6.0l vin g
• 6.6l
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle sw sig
• Computer data lines system
• Engine control module (ecm) (except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt)
• Front drive axle actuator (on front axle assembly)
• G103 g102 (on lower left front of engine) of engine)
• G201 (upper left corner of dash)
• Gmlan bus +
• Gmlan bus -
• Gnd
• Ground distribution system
• Hot w/ run/crnk relay energized
• Ign
• Instrument panel cluster (ipc)
• J105
• J130 (except 6.0l)
• J220 (w/ steering pnk
• Logic
• Pnk
• Ser data
• Tan
• Trans ign 1 fuse 19 fuse 13 10a
• Transfer case shift control switch (on top left of transfer case)
• Underhood fuse block (left side of engine compt)
• Wheel heater)
• X110
• X2 n4 pnk
• X5 g4

6.0L VIN G

6.0L VIN G, A/T Wiring Diagram (1 of 2) for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN G, A/T Wiring Diagram (1 of 2) for GMC Sierra 2500 HD SLT 2013:

• (lower left side of dash) body control module
• (lower left side of dash) left i/p junction block
• (upper left corner of dash) g201
• 6.0l vin g
• Accy volt
• Automatic transmission
• Automatic transmission fluid temperature (tft) sensor
• Automatic transmission fluid temperature (tft) sensor signal
• Aux hvac- ign fuse 45 10a
• B8 x109
• Batt +
• Brake pedal position (bpp) sensor
• Computer data lines system
• Control solenoid valve assembly
• Driver information center (dic) display
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 6.0l vin g
• G103 (top rear of engine)
• G4 x5
• Gmlan data bus (+)
• Gmlan data bus (-)
• Gnd
• Ground distribution system
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign 1 volt
• Instrument cluster panel (ipc)
• J104 (in engine harness, 15 cm from engine control module connector breakout)
• J130 (w/ 2 speed transfer case)
• J220 (w/ steering wheel heater)
• Logic
• Low reference
• Park/neutral sig
• Pc solenoid 1 control
• Pc solenoid 2 control
• Pc solenoid 3 control
• Pc solenoid 4 control
• Pc solenoid 5 control
• Pnk
• Pressure control (pc) solenoid valve 1
• Pressure control (pc) solenoid valve 2
• Pressure control (pc) solenoid valve 3
• Pressure control (pc) solenoid valve 4
• Pressure control (pc) solenoid valve 5
• Replicated tos signal
• Sensor low ref
• Serial data bus (+)
• Serial data bus (-)
• Shift solenoid (ss) 1 control
• Shift solenoid (ss) 2 control
• Shift solenoid (ss) valve 1
• Shift solenoid (ss) valve 2
• Stop lamp sw sig
• Tan
• Tcm-batt fuse 14 10a
• To automatic transmission internal mode switch (ims) (diagram 2 of 2)
• Torque converter clutch (tcc) pressure control (pc) solenoid valve
• Torque converter clutch pressure control solenoid control
• Tos sig
• Tow/ haul ind
• Trans ign1 fuse 19 15a
• Transmission control module (tcm)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (vss) (on transfer case tailshaft housing)
• Volt reference
• Vss high sig
• Vss low sig
• X205

6.0L VIN G, A/T Wiring Diagram (2 of 2) for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN G, A/T Wiring Diagram (2 of 2) for GMC Sierra 2500 HD SLT 2013:

• (diagram 1 of 2)
• (in instrument panel harness, in transfer case shift control module connector breakout) j207
• (in steering column harness)
• (lower left side of dash) transfer case shift control module
• 12v ref
• A/t manual shift switch
• Acc volt
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission input shaft speed (iss) sensor
• Automatic transmission internal mode switch (ims)
• Automatic transmission output shaft speed (iss) sensor
• Automatic transmission shift lever
• Body control module (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Cruise control system
• From automatic transmission a
• Ftp switch 1 voltage
• Ftp switch 3 voltage
• Ftp switch 4 voltage
• Ftp switch 5 voltage
• G201 (upper left corner of dash)
• Gmlan serial data bus +
• Gmlan serial data bus -
• Gnd
• Input speed sensor (iss) signal
• J127
• J216
• J230
• Nca
• Output speed sensor (oss) signal
• Pnk
• Red
• Start
• Tan
• Tap up/ tap down sw sig
• Tow/ haul sw sig
• Tow/ haul switch
• Transmission control module (tcm)
• Transmission range switch sig a
• Transmission range switch sig b
• Transmission range switch sig c
• Transmission range switch sig p
• W/ 2 speed transfer case
• W/ electronic steering control
• W/o 2 speed transfer case
• X1 pnk
• X3 tan

6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2500 HD SLT 2013:

• (gas)
• (lower left side of dash) left i/p junction block
• 2 hi ind ctrl
• 2-hi ind
• 4 hi ind ctrl
• 4 lo ind ctrl
• 4-hi ind
• 4-lo ind
• 4wd ind
• 5 volt ref
• 8v sply
• Accy wakeup srl data
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle actr ctrl
• Axle sw sig
• B12
• Batt +
• Body control module (bcm) (lower left side of dash)
• C10
• Computer data lines system
• Diesel
• Dirtn sig
• Front axle actuator (0n front axle assembly)
• G102 (on lower left front of engine)
• G103 (diesel)
• G201 (upper left corner of dash)
• G4 pnk
• Gas
• Gmlan bus +
• Gmlan bus -
• Gnd
• Ground distribution system
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign 1 volt
• Incrmt encoder sig
• Instrument panel cluster (ipc)
• Interior lights system
• J105
• J130 (except 6.0l)
• J220 (w/ steering wheel heater)
• Left i/p junction block (lower left side of dash)
• Lo ref
• Logic
• Low ref
• Misc ign fuse 43 fuse 40 10a
• Mtr ctrl a
• Mtr ctrl b
• Neutral ind
• Neutral ind ctrl
• Pnk
• Power distribution system
• Pulse sig
• Right i/p junction block (in right end of dash)
• Ser data
• Shift motor
• Sw sig
• Tan
• Trans ig1 fuse 19 fuse 13 15a
• Transfer case encoder motor (on transfer case)
• Transfer case shift control module (lower left side of dash)
• Transfer case shift control switch (on top left of transfer case)
• Trec fuse 67 fuse 62 30a
• Underhood fuse block (left side of engine compt)
• Wiper/washer system
• X1 a3 pnk
• X109
• X110

6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra 2500 HD SLT 2013

List of elements for 6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra 2500 HD SLT 2013:

• (4.3l)
• (4.8l, 5.3l, 6.ol & 6.2l)
• (6.6l)
• (gas) (diesel)
• (lower left side of dash) left i/p junction block
• (top left rear of engine) g107
• (top rear
• 4.3l
• 4.8l, 5.3l, 6.0l vin j, 6.0l vin b & 6.2l
• 4wd ind
• 4wd low sig
• 6.0l vin g
• 6.6l
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle sw sig
• Computer data lines system
• Engine control module (ecm) (except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt)
• Front drive axle actuator (on front axle assembly)
• G103 g102 (on lower left front of engine) of engine)
• G201 (upper left corner of dash)
• Gmlan bus +
• Gmlan bus -
• Gnd
• Ground distribution system
• Hot w/ run/crnk relay energized
• Ign
• Instrument panel cluster (ipc)
• J105
• J130 (except 6.0l)
• J220 (w/ steering pnk
• Logic
• Pnk
• Ser data
• Tan
• Trans ign 1 fuse 19 fuse 13 10a
• Transfer case shift control switch (on top left of transfer case)
• Underhood fuse block (left side of engine compt)
• Wheel heater)
• X110
• X2 n4 pnk
• X5 g4

6.6L VIN 8

6.6L VIN 8, A/T Wiring Diagram (1 of 2) for GMC Sierra 2500 HD SLT 2013

List of elements for 6.6L VIN 8, A/T Wiring Diagram (1 of 2) for GMC Sierra 2500 HD SLT 2013:

• (in engine harness, 15 cm from engine control module connector breakout)
• (in instrument panel harness, in transfer case shift control module connector breakout)
• (in pto jumper harness) j140
• (in steering column harness)
• (lower left front of engine) g102
• (lower left side of dash) transfer case shift control module
• (right front side of engine) glow plug control module (gpcm)
• 12v ref
• A red
• A/t manual shift switch
• Acc volt
• Acc wakeup srl data
• Automatic transmission
• Automatic transmission shift lever
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Data bus (+)
• Data bus (-)
• Fld press sw sig a
• Fld press sw sig c
• G201 (upper left corner of dash)
• Gmlan data bus (-)
• Gmlan serial data bus +
• Gmlan serial data bus -
• Gnd
• Ign
• J104
• J106
• J125
• J143
• J216
• J230
• Low ref
• Modulated main pressure control (pc) solenoid valve
• Modulated main pressure solenoid valve
• Nca
• Pc sol vlv hi ctrl
• Pc sol vlv low ctrl
• Pcs1 sig
• Pnk
• Power take off (pto) module (outside of right front chassis frame)
• Pressure control solenoid valve 2
• Red
• Replicated tos sig
• Shift solenoid (ss) valve 1
• Shift solenoid (ss) valve 2
• Shift solenoid (ss) valve 3
• Ss2 vlv ctrl
• Ssc vlv ctrl
• Tan
• Tap up/ tap down sw sig
• Tft sensor sig
• Torque converter clutch (tcc) pressure control (pc) solenoid valve
• Tow/ haul sw sig
• Tow/ haul switch
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Transmission control module (left front of engine compt, near fan shroud)
• Vlv ctrl
• Vss high sig
• Vss sig low
• W/ 2 speed push button & electric shift control transfer case
• W/ electronic steering control
• W/o 2 speed push button & electric shift control transfer case
• X1 pnk
• X107
• X124
• X175
• X3 tan

6.6L VIN 8, A/T Wiring Diagram (2 of 2) for GMC Sierra 2500 HD SLT 2013

List of elements for 6.6L VIN 8, A/T Wiring Diagram (2 of 2) for GMC Sierra 2500 HD SLT 2013:

• (left front of engine compt, near fan shroud) engine control module (ecm)
• (left side of transmission) automatic transmission turbine speed sensor
• (lower left side of dash) left i/p junction block
• (rear of transmission) vehicle speed sensor (vss)
• (upper left corner of dash) g201
• (w/ 2 speed push button & electric shift control transfer case) j130
• Accy wakeup srl data
• Actuator sply volt
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Aux hvac- ign fuse 45 10a
• Batt +
• Body control module (lower left side of dash)
• Brake pedal position (bpp) sensor
• Button & electric shift control transfer case
• Computer data lines system
• Data bus (+)
• Data bus (-)
• Exterior lights system
• Fld press sw sig 4
• Fld press sw sig b
• G102 (lower left front of engine)
• G4 x5
• Gmlan data bus (+)
• Gnd
• Ground distribution system
• Hot at all times
• Ign
• Ign 1 volt
• Instrument panel cluster (ipc)
• J106
• J144
• J220 (w/ steering wheel heater)
• Logic
• Main press sol ctrl
• Mil ctrl
• Mil ind
• P/n
• Park/neutral sig
• Pnk
• Power distribution
• Range sw sig a
• Sensor low ref
• Stop lamp sw sig
• System
• Tan
• Tan e
• Tcc brake sig
• Tcc pcs low ctrl
• Tcm-batt fuse 7 15a
• Tft sensor
• Tos sig
• Tow/ haul ind
• Trans/ign1 fuse 13 15a
• Transmission control module (left front of engine compt, near fan shroud)
• Turbine speed sw sig
• Underhood fuse block (left side of engine compt)
• Volt reference
• W/ 2 speed push button & electric shift control transfer case
• W/o 2 speed push
• X109 a7
• X175
• X205

6.6L VIN 8, PTO Wiring Diagram for GMC Sierra 2500 HD SLT 2013

List of elements for 6.6L VIN 8, PTO Wiring Diagram for GMC Sierra 2500 HD SLT 2013:

• (in pto jumper harness) j129
• (in pto jumper harness) j139
• (top rear of engine) g103
• 5-volt ref
• 5-volt reference
• Battery positive voltage
• Computer data lines system
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine shut off sig
• Engine start sw sig
• Exp/pto fuse 44 15a
• Exterior lights system
• G103 (top rear of engine)
• Gnd
• Hi spd gmlan serial data (+)
• Hi spd gmlan serial data (-)
• Hi spd serial data +
• Hi spd serial data -
• Hot at all times
• Hot w/ run/crnk relay energized
• Interior lights system
• J106
• J127
• J133 (in engine chassis harness)
• J138 (in pto jumper harness)
• J141
• J176 (in engine chassis harness, 6 cm from power take-off module breakout to x124)
• J280
• Left i/p junction block (lower left side of dash)
• Low ref
• Low reference
• Misc ign fuse 40 10a
• Mode select a
• Mode select b
• Mode select c
• Off
• Pnk
• Power take off (pto) relay
• Power take off (pto) switch
• Power take off module (pto) (outside of right front chassis frame)
• Pto engage sig
• Pto engine shutdown sig
• Pto relay coil ctrl
• Pto remote sw set sig
• Pto rly engage sig
• Pto sw indicator ctrl
• Remote mode enable sig
• Remote mode pps
• Remote start arming sig
• Res +
• Seo b1 fuse 49 15a
• Serial data enable
• Set -
• Shutdown signal
• Tan
• Tcc brake signal
• Torque limit request sig
• Underhood fuse block (left side of engine compt)
• X123
• X124

6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2500 HD SLT 2013

List of elements for 6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2500 HD SLT 2013:

• (gas)
• (lower left side of dash) left i/p junction block
• 2 hi ind ctrl
• 2-hi ind
• 4 hi ind ctrl
• 4 lo ind ctrl
• 4-hi ind
• 4-lo ind
• 4wd ind
• 5 volt ref
• 8v sply
• Accy wakeup srl data
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle actr ctrl
• Axle sw sig
• B12
• Batt +
• Body control module (bcm) (lower left side of dash)
• C10
• Computer data lines system
• Diesel
• Dirtn sig
• Front axle actuator (0n front axle assembly)
• G102 (on lower left front of engine)
• G103 (diesel)
• G201 (upper left corner of dash)
• G4 pnk
• Gas
• Gmlan bus +
• Gmlan bus -
• Gnd
• Ground distribution system
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign 1 volt
• Incrmt encoder sig
• Instrument panel cluster (ipc)
• Interior lights system
• J105
• J130 (except 6.0l)
• J220 (w/ steering wheel heater)
• Left i/p junction block (lower left side of dash)
• Lo ref
• Logic
• Low ref
• Misc ign fuse 43 fuse 40 10a
• Mtr ctrl a
• Mtr ctrl b
• Neutral ind
• Neutral ind ctrl
• Pnk
• Power distribution system
• Pulse sig
• Right i/p junction block (in right end of dash)
• Ser data
• Shift motor
• Sw sig
• Tan
• Trans ig1 fuse 19 fuse 13 15a
• Transfer case encoder motor (on transfer case)
• Transfer case shift control module (lower left side of dash)
• Transfer case shift control switch (on top left of transfer case)
• Trec fuse 67 fuse 62 30a
• Underhood fuse block (left side of engine compt)
• Wiper/washer system
• X1 a3 pnk
• X109
• X110

6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra 2500 HD SLT 2013

List of elements for 6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra 2500 HD SLT 2013:

• (4.3l)
• (4.8l, 5.3l, 6.ol & 6.2l)
• (6.6l)
• (gas) (diesel)
• (lower left side of dash) left i/p junction block
• (top left rear of engine) g107
• (top rear
• 4.3l
• 4.8l, 5.3l, 6.0l vin j, 6.0l vin b & 6.2l
• 4wd ind
• 4wd low sig
• 6.0l vin g
• 6.6l
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle sw sig
• Computer data lines system
• Engine control module (ecm) (except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt)
• Front drive axle actuator (on front axle assembly)
• G103 g102 (on lower left front of engine) of engine)
• G201 (upper left corner of dash)
• Gmlan bus +
• Gmlan bus -
• Gnd
• Ground distribution system
• Hot w/ run/crnk relay energized
• Ign
• Instrument panel cluster (ipc)
• J105
• J130 (except 6.0l)
• J220 (w/ steering pnk
• Logic
• Pnk
• Ser data
• Tan
• Trans ign 1 fuse 19 fuse 13 10a
• Transfer case shift control switch (on top left of transfer case)
• Underhood fuse block (left side of engine compt)
• Wheel heater)
• X110
• X2 n4 pnk
• X5 g4