ENGINE PERFORMANCE – Chevrolet Tahoe 2008 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.8L VIN C

4.8L VIN C, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008

List of elements for 4.8L VIN C, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008:

• (in chassis harness) j331
• 4wd low sig
• 5v ref
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly)
• Air conditioning system
• Bank 1 sens 2
• Brake sw sig
• Computer data lines system
• Cooling fans system
• Data bus +
• Data bus -
• Engine control module (ecm) (left side of engine compt)
• Extension shld
• Exterior lights system
• Fan rly ctrl
• Fuel line pressure sensor
• Fuel pump flow control module
• Fuel tank pressure (ftp) sensor (short wheel base: on fuel tank, integral to fuel pump & sender assembly) (long wheel base: on fuel tank, integral to secondary fuel pump & sender assembly)
• G103 (front of right cylinder head)
• G300 (under left side of vehicle, on 2nd body mount)
• Gnd
• Iat sens sig
• Ign volt
• Ign voltage
• J106
• J300
• J364
• Level sens sig
• Lines system computer data
• Low ref
• Maf
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• Nca
• P/n sig
• Pnk
• Pnk b
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Primary fuel pump & sender assembly (on primary fuel pump assembly)
• Pump ctrl
• Ref volt
• Relay ctrl
• Sens sig
• Serial data
• Tan
• Tan e
• Transmissions system

4.8L VIN C, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008

List of elements for 4.8L VIN C, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) underhood fuse block
• 5v ref
• Air conditioning system
• Anti-lock brakes system
• Aux hvac- ign fuse 48 1oa
• Bank 1 sens 2
• Bank 2 sens 2
• Clutch rly ctrl
• Cooling fans system
• Ecm- batt fuse 12 10a
• Ecm- ign fuse 56 15a
• Ecm/throt cont fuse 5 15a
• Enable rly ctrl
• Eng fuse 4 15a
• Engine control module (ecm) (left side of engine compt)
• Evaporative emission (evap) canister vent solenoid valve (on evap canister)
• Fan rly ctrl
• Fscm fuse 21 20a
• G103 (front of right cylinder head)
• Ground
• Heated oxygen sensor (ho2s) bank 1 sensor 2
• Heated oxygen sensor (ho2s) bank 2 sensor 2
• Hot at all times
• Hot w/ run/ crank relay energized
• Ign
• Inj-a fuse 24 20a
• Inj-b fuse 13 20a
• Ipc fuse 46 10a
• J106
• J219 (w/ steering wheel heater)
• Maf sens sig
• Mil ctrl
• Nca
• O2-a snsr fuse 18 10a
• O2-b snsr fuse 8 10a
• Pnk
• Power distribution system
• Pump rly ctrl
• Pwr/ trn relay
• Rly coil ctrl
• Speed sig
• Starting/ charging system
• Tan
• Tcm- batt fuse 14 10a
• Tos sig
• Transmissions system
• Vent sol ctrl

4.8L VIN C, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008

List of elements for 4.8L VIN C, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008:

• (6.0l & 6.2l) camshaft position (cmp) actuator solenoid valve
• (below left end of dash) left i/p junction block
• (on lower right side of oil pan) oil level switch
• Brake fluid level switch (left side of brake fluid reservoir)
• Cadillac
• Computer data lines system
• Engine oil pressure ind
• Fuel injectors (top left side of engine)
• Fuel injectors (top right side of engine)
• G103 (front of right cylinder head)
• G201 (behind upper left end of dash)
• Gmc/chevrolet
• Gnd
• Ign
• Instrument panel cluster (ipc)
• J106
• Logic
• Malfunction indicator lamp
• Pnk
• Pnk a
• Serial data
• Tan
• Tan b

4.8L VIN C, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008

List of elements for 4.8L VIN C, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) engine control module (ecm)
• 5v ref
• Bank 1 sens 1
• Bank 2 sens 1
• Camshaft position (cmp) sensor (lower front of engine)
• Crankshaft position (ckp) sensor
• Duty cycle sig
• Ect sens sig
• Engine coolant temperature (ect) sensor (front of left cylinder head)
• Engine oil pressure (eop) sensor (on top rear of engine)
• Heated oxygen sensor (ho2s) bank 1 sensor 1
• Heated oxygen sensor (ho2s) bank 2 sensor 1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Knock sensor (ks) 1 (on left side of engine)
• Knock sensor (ks) 2 (on right side of engine)
• Low ref
• Manifold absolute pressure (map) sensor (on top rear of engine)
• Nca
• Oil level sw
• Pnk
• Purge sol ctrl
• Sens 1 sig
• Sens 2 sig
• Sol ctrl
• Sol ctrl 1
• Sol ctrl 2
• Sol ctrl 3
• Sol ctrl 4
• Starting/ charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan

4.8L VIN C, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008

List of elements for 4.8L VIN C, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008:

• (approximately 3 cm (1.18 in) from ignition coil 4 breakout)
• (approximately 3 cm (1.18 in) from ignition coil 5 breakout)
• (approximately 5 cm (1.97 in) from x111 breakout) j112
• (lower
• (on front of intake manifold) throttle body
• (rear of engine) (except 6.2l & 4.8l) valve lifter oil manifold (vlom) assembly
• (top left of engine, mounted above intake manifold) evaporative emission (evap) canister purge solenoid valve
• 5v ref
• A pnk
• Bank 1 sens 1
• Bank 2 sens 1
• Charge ind sig
• Ckp sens sig
• Cmp sens sig
• Ctrl
• Cylinder shutoff solenoid 1 cylinder 1
• Cylinder shutoff solenoid 2 cylinder 4
• Cylinder shutoff solenoid 3 cylinder 6
• Cylinder shutoff solenoid 4 cylinder 7
• E pnk
• Engine control module (ecm) (left side of engine compt)
• G102
• G102 (lower left front of engine)
• Gnd
• Ign
• Ign coil 1 ctrl
• Ign coil 2 ctrl
• Ign coil 3 ctrl
• Ign coil 4 ctrl
• Ign coil 5 ctrl
• Ign coil 6 ctrl
• Ign coil 7 ctrl
• Ign coil 8 ctrl
• Ignition coils (left side of engine)
• Ignition coils (right side of engine)
• J107
• J108
• J109 (approximately 5 cm (1.97 in) from x111 breakout)
• J110
• J111
• Left front of engine)
• Low ref
• Map sens sig
• Pnk
• Pnk d
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Red
• Red c
• Ref lo
• Starting/charging system
• Tan

5.3L VIN 0

5.3L VIN 0, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN 0, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008:

• (in chassis harness) j331
• 4wd low sig
• 5v ref
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly)
• Air conditioning system
• Bank 1 sens 2
• Brake sw sig
• Computer data lines system
• Cooling fans system
• Data bus +
• Data bus -
• Engine control module (ecm) (left side of engine compt)
• Extension shld
• Exterior lights system
• Fan rly ctrl
• Fuel line pressure sensor
• Fuel pump flow control module
• Fuel tank pressure (ftp) sensor (short wheel base: on fuel tank, integral to fuel pump & sender assembly) (long wheel base: on fuel tank, integral to secondary fuel pump & sender assembly)
• G103 (front of right cylinder head)
• G300 (under left side of vehicle, on 2nd body mount)
• Gnd
• Iat sens sig
• Ign volt
• Ign voltage
• J106
• J300
• J364
• Level sens sig
• Lines system computer data
• Low ref
• Maf
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• Nca
• P/n sig
• Pnk
• Pnk b
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Primary fuel pump & sender assembly (on primary fuel pump assembly)
• Pump ctrl
• Ref volt
• Relay ctrl
• Sens sig
• Serial data
• Tan
• Tan e
• Transmissions system

5.3L VIN 0, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN 0, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) underhood fuse block
• 5v ref
• Air conditioning system
• Anti-lock brakes system
• Aux hvac- ign fuse 48 1oa
• Bank 1 sens 2
• Bank 2 sens 2
• Clutch rly ctrl
• Cooling fans system
• Ecm- batt fuse 12 10a
• Ecm- ign fuse 56 15a
• Ecm/throt cont fuse 5 15a
• Enable rly ctrl
• Eng fuse 4 15a
• Engine control module (ecm) (left side of engine compt)
• Evaporative emission (evap) canister vent solenoid valve (on evap canister)
• Fan rly ctrl
• Fscm fuse 21 20a
• G103 (front of right cylinder head)
• Ground
• Heated oxygen sensor (ho2s) bank 1 sensor 2
• Heated oxygen sensor (ho2s) bank 2 sensor 2
• Hot at all times
• Hot w/ run/ crank relay energized
• Ign
• Inj-a fuse 24 20a
• Inj-b fuse 13 20a
• Ipc fuse 46 10a
• J106
• J219 (w/ steering wheel heater)
• Maf sens sig
• Mil ctrl
• Nca
• O2-a snsr fuse 18 10a
• O2-b snsr fuse 8 10a
• Pnk
• Power distribution system
• Pump rly ctrl
• Pwr/ trn relay
• Rly coil ctrl
• Speed sig
• Starting/ charging system
• Tan
• Tcm- batt fuse 14 10a
• Tos sig
• Transmissions system
• Vent sol ctrl

5.3L VIN 0, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN 0, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008:

• (6.0l & 6.2l) camshaft position (cmp) actuator solenoid valve
• (below left end of dash) left i/p junction block
• (on lower right side of oil pan) oil level switch
• Brake fluid level switch (left side of brake fluid reservoir)
• Cadillac
• Computer data lines system
• Engine oil pressure ind
• Fuel injectors (top left side of engine)
• Fuel injectors (top right side of engine)
• G103 (front of right cylinder head)
• G201 (behind upper left end of dash)
• Gmc/chevrolet
• Gnd
• Ign
• Instrument panel cluster (ipc)
• J106
• Logic
• Malfunction indicator lamp
• Pnk
• Pnk a
• Serial data
• Tan
• Tan b

5.3L VIN 0, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN 0, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) engine control module (ecm)
• 5v ref
• Bank 1 sens 1
• Bank 2 sens 1
• Camshaft position (cmp) sensor (lower front of engine)
• Crankshaft position (ckp) sensor
• Duty cycle sig
• Ect sens sig
• Engine coolant temperature (ect) sensor (front of left cylinder head)
• Engine oil pressure (eop) sensor (on top rear of engine)
• Heated oxygen sensor (ho2s) bank 1 sensor 1
• Heated oxygen sensor (ho2s) bank 2 sensor 1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Knock sensor (ks) 1 (on left side of engine)
• Knock sensor (ks) 2 (on right side of engine)
• Low ref
• Manifold absolute pressure (map) sensor (on top rear of engine)
• Nca
• Oil level sw
• Pnk
• Purge sol ctrl
• Sens 1 sig
• Sens 2 sig
• Sol ctrl
• Sol ctrl 1
• Sol ctrl 2
• Sol ctrl 3
• Sol ctrl 4
• Starting/ charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan

5.3L VIN 0, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN 0, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008:

• (approximately 3 cm (1.18 in) from ignition coil 4 breakout)
• (approximately 3 cm (1.18 in) from ignition coil 5 breakout)
• (approximately 5 cm (1.97 in) from x111 breakout) j112
• (lower
• (on front of intake manifold) throttle body
• (rear of engine) (except 6.2l & 4.8l) valve lifter oil manifold (vlom) assembly
• (top left of engine, mounted above intake manifold) evaporative emission (evap) canister purge solenoid valve
• 5v ref
• A pnk
• Bank 1 sens 1
• Bank 2 sens 1
• Charge ind sig
• Ckp sens sig
• Cmp sens sig
• Ctrl
• Cylinder shutoff solenoid 1 cylinder 1
• Cylinder shutoff solenoid 2 cylinder 4
• Cylinder shutoff solenoid 3 cylinder 6
• Cylinder shutoff solenoid 4 cylinder 7
• E pnk
• Engine control module (ecm) (left side of engine compt)
• G102
• G102 (lower left front of engine)
• Gnd
• Ign
• Ign coil 1 ctrl
• Ign coil 2 ctrl
• Ign coil 3 ctrl
• Ign coil 4 ctrl
• Ign coil 5 ctrl
• Ign coil 6 ctrl
• Ign coil 7 ctrl
• Ign coil 8 ctrl
• Ignition coils (left side of engine)
• Ignition coils (right side of engine)
• J107
• J108
• J109 (approximately 5 cm (1.97 in) from x111 breakout)
• J110
• J111
• Left front of engine)
• Low ref
• Map sens sig
• Pnk
• Pnk d
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Red
• Red c
• Ref lo
• Starting/charging system
• Tan

5.3L VIN J

5.3L VIN J, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN J, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008:

• (in chassis harness) j331
• 4wd low sig
• 5v ref
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly)
• Air conditioning system
• Bank 1 sens 2
• Brake sw sig
• Computer data lines system
• Cooling fans system
• Data bus +
• Data bus -
• Engine control module (ecm) (left side of engine compt)
• Extension shld
• Exterior lights system
• Fan rly ctrl
• Fuel line pressure sensor
• Fuel pump flow control module
• Fuel tank pressure (ftp) sensor (short wheel base: on fuel tank, integral to fuel pump & sender assembly) (long wheel base: on fuel tank, integral to secondary fuel pump & sender assembly)
• G103 (front of right cylinder head)
• G300 (under left side of vehicle, on 2nd body mount)
• Gnd
• Iat sens sig
• Ign volt
• Ign voltage
• J106
• J300
• J364
• Level sens sig
• Lines system computer data
• Low ref
• Maf
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• Nca
• P/n sig
• Pnk
• Pnk b
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Primary fuel pump & sender assembly (on primary fuel pump assembly)
• Pump ctrl
• Ref volt
• Relay ctrl
• Sens sig
• Serial data
• Tan
• Tan e
• Transmissions system

5.3L VIN J, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN J, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) underhood fuse block
• 5v ref
• Air conditioning system
• Anti-lock brakes system
• Aux hvac- ign fuse 48 1oa
• Bank 1 sens 2
• Bank 2 sens 2
• Clutch rly ctrl
• Cooling fans system
• Ecm- batt fuse 12 10a
• Ecm- ign fuse 56 15a
• Ecm/throt cont fuse 5 15a
• Enable rly ctrl
• Eng fuse 4 15a
• Engine control module (ecm) (left side of engine compt)
• Evaporative emission (evap) canister vent solenoid valve (on evap canister)
• Fan rly ctrl
• Fscm fuse 21 20a
• G103 (front of right cylinder head)
• Ground
• Heated oxygen sensor (ho2s) bank 1 sensor 2
• Heated oxygen sensor (ho2s) bank 2 sensor 2
• Hot at all times
• Hot w/ run/ crank relay energized
• Ign
• Inj-a fuse 24 20a
• Inj-b fuse 13 20a
• Ipc fuse 46 10a
• J106
• J219 (w/ steering wheel heater)
• Maf sens sig
• Mil ctrl
• Nca
• O2-a snsr fuse 18 10a
• O2-b snsr fuse 8 10a
• Pnk
• Power distribution system
• Pump rly ctrl
• Pwr/ trn relay
• Rly coil ctrl
• Speed sig
• Starting/ charging system
• Tan
• Tcm- batt fuse 14 10a
• Tos sig
• Transmissions system
• Vent sol ctrl

5.3L VIN J, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN J, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008:

• (6.0l & 6.2l) camshaft position (cmp) actuator solenoid valve
• (below left end of dash) left i/p junction block
• (on lower right side of oil pan) oil level switch
• Brake fluid level switch (left side of brake fluid reservoir)
• Cadillac
• Computer data lines system
• Engine oil pressure ind
• Fuel injectors (top left side of engine)
• Fuel injectors (top right side of engine)
• G103 (front of right cylinder head)
• G201 (behind upper left end of dash)
• Gmc/chevrolet
• Gnd
• Ign
• Instrument panel cluster (ipc)
• J106
• Logic
• Malfunction indicator lamp
• Pnk
• Pnk a
• Serial data
• Tan
• Tan b

5.3L VIN J, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN J, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) engine control module (ecm)
• 5v ref
• Bank 1 sens 1
• Bank 2 sens 1
• Camshaft position (cmp) sensor (lower front of engine)
• Crankshaft position (ckp) sensor
• Duty cycle sig
• Ect sens sig
• Engine coolant temperature (ect) sensor (front of left cylinder head)
• Engine oil pressure (eop) sensor (on top rear of engine)
• Heated oxygen sensor (ho2s) bank 1 sensor 1
• Heated oxygen sensor (ho2s) bank 2 sensor 1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Knock sensor (ks) 1 (on left side of engine)
• Knock sensor (ks) 2 (on right side of engine)
• Low ref
• Manifold absolute pressure (map) sensor (on top rear of engine)
• Nca
• Oil level sw
• Pnk
• Purge sol ctrl
• Sens 1 sig
• Sens 2 sig
• Sol ctrl
• Sol ctrl 1
• Sol ctrl 2
• Sol ctrl 3
• Sol ctrl 4
• Starting/ charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan

5.3L VIN J, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008

List of elements for 5.3L VIN J, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008:

• (approximately 3 cm (1.18 in) from ignition coil 4 breakout)
• (approximately 3 cm (1.18 in) from ignition coil 5 breakout)
• (approximately 5 cm (1.97 in) from x111 breakout) j112
• (lower
• (on front of intake manifold) throttle body
• (rear of engine) (except 6.2l & 4.8l) valve lifter oil manifold (vlom) assembly
• (top left of engine, mounted above intake manifold) evaporative emission (evap) canister purge solenoid valve
• 5v ref
• A pnk
• Bank 1 sens 1
• Bank 2 sens 1
• Charge ind sig
• Ckp sens sig
• Cmp sens sig
• Ctrl
• Cylinder shutoff solenoid 1 cylinder 1
• Cylinder shutoff solenoid 2 cylinder 4
• Cylinder shutoff solenoid 3 cylinder 6
• Cylinder shutoff solenoid 4 cylinder 7
• E pnk
• Engine control module (ecm) (left side of engine compt)
• G102
• G102 (lower left front of engine)
• Gnd
• Ign
• Ign coil 1 ctrl
• Ign coil 2 ctrl
• Ign coil 3 ctrl
• Ign coil 4 ctrl
• Ign coil 5 ctrl
• Ign coil 6 ctrl
• Ign coil 7 ctrl
• Ign coil 8 ctrl
• Ignition coils (left side of engine)
• Ignition coils (right side of engine)
• J107
• J108
• J109 (approximately 5 cm (1.97 in) from x111 breakout)
• J110
• J111
• Left front of engine)
• Low ref
• Map sens sig
• Pnk
• Pnk d
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Red
• Red c
• Ref lo
• Starting/charging system
• Tan

6.0L VIN 5

6.0L VIN 5, Engine Controls Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Engine Controls Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008:

• 5v ref
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly)
• Ajar sw sig
• Anti-theft system
• B+ volt
• Bank 1 sens 1
• Bank 1 sens 2
• Camshaft position (cmp) actuator solenoid valve
• Computer data lines system
• Cooling fans system
• Data
• Ecm-batt fuse 12 10a
• Ecm-ign fuse 56 15a
• Engine control module (ecm) (left side of engine compt)
• Engine oil pressure ind
• Evaporative emission (evap) canister vent solenoid valve (on evap canister)
• Exterior lights system
• Fan rly ctrl
• Fscm fuse 21 20a
• Fuel line pressure sensor
• Heated oxygen sensor (ho2s) bank 1 sensor 1
• Heated oxygen sensor (ho2s) bank 1 sensor 2
• Hood sw sig
• Hot at all times
• Hot w/ run/ crank relay energized
• Ign
• Ign coil 1 ctrl
• Ign volt
• Instrument panel cluster (ipc)
• Ipc fuse 46 10a
• J365
• Knock sens sig
• Knock sensor (ks) 1 (on left side of engine)
• Knock sensor (ks) 2 (on right side of engine)
• Level sens sig
• Logic
• Low ref
• Mil ctrl
• Mil ind
• Nca
• Pedal sw sig
• Phasor ctrl
• Pnk
• Power distribution system
• Press sens sig
• Pump rly ctrl
• Rly coil ctrl
• Sens 1 sig
• Sens 2 sig
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan
• Tcm-batt fuse 14 10a
• Underhood fuse block (left side of engine compt)
• Vent sol ctrl
• Wake-up sig

6.0L VIN 5, Engine Controls Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Engine Controls Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008:

• (approximately 3 cm (1.18 in) from ignition pnk coil 5 breakout) j107
• (on fuel tank, integral to fuel pump & sender assembly) fuel tank pressure (ftp) sensor
• (on primary fuel pump assembly) primary fuel pump & sender assembly
• Computer data lines system
• Ctrl
• Data bus +
• Data bus -
• Extension shield
• Fuel pump flow control module
• G102 (lower left front of engine)
• G300 (under left side of vehicle, on 2nd body mount)
• Gnd
• Ign
• Ign volt
• Ignition coils (left side of engine)
• Ignition coils (right side of engine)
• J108
• J109 (approximately 5 cm (1.97 in) from x111 breakout)
• J110 (approximately 3 cm (1.18 in) from ignition coil 4 breakout)
• J111
• J112 (approximately 5 cm (1.97 in) from x111 breakout)
• J300
• J331 (in chassis harness)
• J364
• Lines system computer data
• Low ref
• Nca
• Pnk
• Pump ctrl
• Ref lo
• Ref volt
• Relay ctrl
• Sens sig
• Serial data
• Tan

6.0L VIN 5, Engine Controls Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Engine Controls Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008:

• 5v ref
• Bank 1 sens 1
• Bank 2 sens 1
• Ecm/throt cont fuse 5 15a
• Eng fuse 4 15a
• Engine control module (ecm) (left side of engine compt)
• G103 (front of right cylinder head)
• Gnd
• Hot at all times
• Iat sens sig
• Ign coil 2 ctrl
• Ign coil 3 ctrl
• Ign coil 4 ctrl
• Ign coil 5 ctrl
• Ign coil 6 ctrl
• Ign coil 7 ctrl
• Ign coil 8 ctrl
• Ign volt
• Inj-a fuse 23 20a
• Inj-b fuse 13 20a
• 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
• Low ref
• Maf sens sig
• O2-a snsr fuse 18 10a
• O2-b snsr fuse 8 10a
• Pnk
• Pos sens sig
• Press sens sig
• Pwr/ trn relay
• Sens 1 sig
• Sens 2 sig
• Tan
• Underhood fuse block (left side of engine compt)

6.0L VIN 5, Engine Controls Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Engine Controls Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008:

• (on front of intake manifold) throttle body
• (on top rear of engine) engine oil pressure (eop) sensor
• Camshaft position (cmp) sensor (lower front of engine)
• Crankshaft position (ckp) sensor
• Drive motor generator power inverter module
• Fuel injectors (top left side of engine)
• Fuel injectors (top right side of engine)
• G103 (front of right cylinder head)
• Iat
• J106
• J153
• J154
• Low ref
• Maf
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• Pnk
• Pos sens sig
• Tan

6.0L VIN 5, Engine Controls Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Engine Controls Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008:

• (front of right cylinder head) g103
• (on lower right side of oil pan) oil level switch
• (or 821)
• (top left of engine, mounted above intake manifold) evaporative emission (evap) canister purge solenoid valve
• 1 shutoff sol
• 4 shutoff sol
• 5v ref
• 6 shutoff sol
• 7 shutoff sol
• Air conditioning system
• Bank 2 sens 1
• Bank 2 sens 2
• Barometric pressure (baro) sensor
• Computer data lines system
• Cooling fans system
• Cylinder shutoff solenoid 1 cylinder 1
• Cylinder shutoff solenoid 2 cylinder 4
• Cylinder shutoff solenoid 3 cylinder 6
• Cylinder shutoff solenoid 4 cylinder 7
• Data bus +
• Data bus -
• Ect sens sig
• Engine control module (ecm) (left side of engine compt)
• Engine coolant temperature (ect) sensor (front of left cylinder head)
• Fan rly ctrl
• G103 (front of right cylinder head)
• Gnd
• Heated oxygen sensor (ho2s) bank 2 sensor 1
• Heated oxygen sensor (ho2s) bank 2 sensor 2
• Hybrid system circuit
• J106
• Low ref
• Manifold absolute pressure (map) sensor (on top rear of engine)
• Map sens sig
• Nca
• Oil level sw sig
• Pnk
• Press sens sig
• Ptlan +
• Ptlan -
• Pump mtr gnd
• Purge sol ctrl
• Tan
• Transmissions system
• Valve lifter oil manifold (vlom) assembly (w/ active fuel management) (rear of engine)
• Vss sig (or) vss high sig

6.0L VIN 5, Hybrid System Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Hybrid System Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) engine control module (ecm)
• (w/ generator assembly)
• 1st position drive motor
• 2nd position drive motor
• Automatic transmission
• Automatic transmission auxiliary fluid pump control module
• Automatic transmission internal mode switch (ims)
• Auxiliary fuse block
• B+ nca
• Circuit 1
• Circuit 2
• Circuit excitation
• Computer data lines system
• Contactor ctrl
• Drain wire nca
• Drive motor generator power inverter module
• Engine controls system
• Excitation circuit
• Fluid pump
• Fluid pump nca
• G103 (front of right cylinder head)
• Gnd nca
• High voltage
• Hot at all times
• Ign nca
• Ign volt
• Inter mode gnd
• Inter mode r1
• Inter mode r2
• Inter mode r3
• Inter mode r4
• Inter mode s
• J151
• J156
• Low reference
• Mega fuse 200a
• Mtr a s1 sig
• Mtr a s2 sig
• Mtr a s3 sig
• Mtr a s4 sig
• Mtr b s1 sig
• Mtr b s2 sig
• Mtr b s3 sig
• Mtr b s4 sig
• Nca
• Phase a nca
• Phase b nca
• Phase c nca
• Pim 1 fuse 8 15a
• Pim 2 fuse 9 15a
• Pnk
• Pos sens sig
• Ptlan+
• Ptlan-
• Pump ctrl
• Pump ctrl nca
• Red
• Resol mtr a+
• Resol mtr b+
• Resol mtr b-
• Sens b rtn
• Ser data bus+
• Ser data bus-
• Tan
• Temp sens a
• Temp sens b
• Trans pump fuse 60a
• Transmission control module (tcm)
• Wake up sig
• X176

6.0L VIN 5, Hybrid System Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Hybrid System Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008:

• (except 6.2l 4wd)
• 300v+
• 300v-
• 42v+
• 42v-
• A red
• A/c compressor
• Accessory dc power control module
• Automatic transmission auxiliary fluid pump
• Body control module (bcm) (behind lower left side of dash)
• Computer data lines system
• Drive motor generator power inverter module
• Electronic brake control module (ebcm) (on left rear frame rail)
• Electronic power steering motor control module
• G112
• Gnd
• Hot w/ run/crank relay energized
• Ign volt
• J155
• Nca
• Phase u
• Phase v
• Phase w
• Pnk
• Power distribution system
• Ptlan+
• Ptlan-
• Red
• Shield
• Trans ign 1 fuse 19 15a
• Underhood fuse block (left side of engine compt)
• Up sig
• X10
• X11
• X12

6.0L VIN 5, Hybrid System Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Hybrid System Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008:

• Auxiliary fuse block
• Battery module
• Becm fuse 10 15a
• Computer data lines system
• Drive motor generator battery
• Drive motor generator battery control module
• Driver motor generator power inverter module cover
• Gnd
• Hot at all times
• Monitor 1
• Monitor 10
• Monitor 11
• Monitor 12
• Monitor 13
• Monitor 14
• Monitor 15
• Monitor 16
• Monitor 17
• Monitor 18
• Monitor 19
• Monitor 2
• Monitor 20
• Monitor 3
• Monitor 4
• Monitor 5
• Monitor 6
• Monitor 7
• Monitor 8
• Monitor 9
• Pnk
• Red
• To drive motor battery high voltage manual disconnect lever (diagram 4 of 5)
• To drive motor battery positive high voltage contactor relay (diagram 4 of 5)
• Transmission power inverter module (3 phase) cable cover

6.0L VIN 5, Hybrid System Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Hybrid System Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008:

• 5-volt ref
• Computer data lines system
• Ctrl sig
• Data bus +
• Data bus -
• Drive motor battery cable terminal extension cover
• Drive motor battery current sensor
• Drive motor battery high voltage manual disconnect lever
• Drive motor battery inverter current limit resistor
• Drive motor battery positive high voltage contactor relay
• Drive motor generator battery
• Drive motor generator battery control module
• Drive motor power inverter current limit relay
• From battery module (diagram 3 of 5)
• From drive motor generator battery control module (diagram 5 of 5)
• Fuse 125a
• G302 (under right side of front passenger's seat)
• G311
• G312
• Gnd
• High voltage
• J302
• Nca
• Pnk
• Red
• Relay ctrl
• Ser data com
• Tan
• To generator battery vent fan (diagram 5 of 5)
• To generator battery vent fan relay (diagram 5 of 5)
• Wake up sig
• X350

6.0L VIN 5, Hybrid System Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008

List of elements for 6.0L VIN 5, Hybrid System Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008:

• (lower left radiator support) g100
• 5-volt ref
• Air inlet drive motor battery temperature sensor
• Air outlet drive motor battery temperature sensor
• Auxiliary fuse block
• Becm fan fuse 2 15a
• Cool pump fuse 6 15a
• Cool pump relay
• Drive motor battery temperature sensor 1
• Drive motor battery temperature sensor 2
• Drive motor battery temperature sensor 3
• Drive motor battery temperature sensor 4
• Drive motor generator battery
• Drive motor generator battery control module
• Engine control module (ecm) (left side of engine compt)
• From drive motor generator battery control module (diagram 4 of 5)
• G101 (lower right radiator support)
• G311
• Generator battery vent fan
• Generator battery vent fan relay
• Generator control module temperature sensor
• Ground
• Hot at all times
• J164
• J395
• Left generator control module coolant pump
• Low ref
• Mtr pwr feed
• Not used
• Pnk
• Pump mtr gnd
• Red
• Right generator control module coolant pump
• Sens 1 rtn
• Sens 1 sig
• Sens 2 rtn
• Sens 2 sig
• Sens 3 rtn
• Sens 3 sig
• Sens 4 rtn
• Sens 4 sig
• Sens ref
• Sens rtn
• Sens sig
• To drive motor battery current sensor (diagram 4 of 5)
• X350

6.2L VIN 8

6.2L VIN 8, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008

List of elements for 6.2L VIN 8, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Tahoe 2008:

• (in chassis harness) j331
• 4wd low sig
• 5v ref
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly)
• Air conditioning system
• Bank 1 sens 2
• Brake sw sig
• Computer data lines system
• Cooling fans system
• Data bus +
• Data bus -
• Engine control module (ecm) (left side of engine compt)
• Extension shld
• Exterior lights system
• Fan rly ctrl
• Fuel line pressure sensor
• Fuel pump flow control module
• Fuel tank pressure (ftp) sensor (short wheel base: on fuel tank, integral to fuel pump & sender assembly) (long wheel base: on fuel tank, integral to secondary fuel pump & sender assembly)
• G103 (front of right cylinder head)
• G300 (under left side of vehicle, on 2nd body mount)
• Gnd
• Iat sens sig
• Ign volt
• Ign voltage
• J106
• J300
• J364
• Level sens sig
• Lines system computer data
• Low ref
• Maf
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• Nca
• P/n sig
• Pnk
• Pnk b
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Primary fuel pump & sender assembly (on primary fuel pump assembly)
• Pump ctrl
• Ref volt
• Relay ctrl
• Sens sig
• Serial data
• Tan
• Tan e
• Transmissions system

6.2L VIN 8, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008

List of elements for 6.2L VIN 8, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) underhood fuse block
• 5v ref
• Air conditioning system
• Anti-lock brakes system
• Aux hvac- ign fuse 48 1oa
• Bank 1 sens 2
• Bank 2 sens 2
• Clutch rly ctrl
• Cooling fans system
• Ecm- batt fuse 12 10a
• Ecm- ign fuse 56 15a
• Ecm/throt cont fuse 5 15a
• Enable rly ctrl
• Eng fuse 4 15a
• Engine control module (ecm) (left side of engine compt)
• Evaporative emission (evap) canister vent solenoid valve (on evap canister)
• Fan rly ctrl
• Fscm fuse 21 20a
• G103 (front of right cylinder head)
• Ground
• Heated oxygen sensor (ho2s) bank 1 sensor 2
• Heated oxygen sensor (ho2s) bank 2 sensor 2
• Hot at all times
• Hot w/ run/ crank relay energized
• Ign
• Inj-a fuse 24 20a
• Inj-b fuse 13 20a
• Ipc fuse 46 10a
• J106
• J219 (w/ steering wheel heater)
• Maf sens sig
• Mil ctrl
• Nca
• O2-a snsr fuse 18 10a
• O2-b snsr fuse 8 10a
• Pnk
• Power distribution system
• Pump rly ctrl
• Pwr/ trn relay
• Rly coil ctrl
• Speed sig
• Starting/ charging system
• Tan
• Tcm- batt fuse 14 10a
• Tos sig
• Transmissions system
• Vent sol ctrl

6.2L VIN 8, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008

List of elements for 6.2L VIN 8, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Tahoe 2008:

• (6.0l & 6.2l) camshaft position (cmp) actuator solenoid valve
• (below left end of dash) left i/p junction block
• (on lower right side of oil pan) oil level switch
• Brake fluid level switch (left side of brake fluid reservoir)
• Cadillac
• Computer data lines system
• Engine oil pressure ind
• Fuel injectors (top left side of engine)
• Fuel injectors (top right side of engine)
• G103 (front of right cylinder head)
• G201 (behind upper left end of dash)
• Gmc/chevrolet
• Gnd
• Ign
• Instrument panel cluster (ipc)
• J106
• Logic
• Malfunction indicator lamp
• Pnk
• Pnk a
• Serial data
• Tan
• Tan b

6.2L VIN 8, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008

List of elements for 6.2L VIN 8, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Tahoe 2008:

• (left side of engine compt) engine control module (ecm)
• 5v ref
• Bank 1 sens 1
• Bank 2 sens 1
• Camshaft position (cmp) sensor (lower front of engine)
• Crankshaft position (ckp) sensor
• Duty cycle sig
• Ect sens sig
• Engine coolant temperature (ect) sensor (front of left cylinder head)
• Engine oil pressure (eop) sensor (on top rear of engine)
• Heated oxygen sensor (ho2s) bank 1 sensor 1
• Heated oxygen sensor (ho2s) bank 2 sensor 1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Knock sensor (ks) 1 (on left side of engine)
• Knock sensor (ks) 2 (on right side of engine)
• Low ref
• Manifold absolute pressure (map) sensor (on top rear of engine)
• Nca
• Oil level sw
• Pnk
• Purge sol ctrl
• Sens 1 sig
• Sens 2 sig
• Sol ctrl
• Sol ctrl 1
• Sol ctrl 2
• Sol ctrl 3
• Sol ctrl 4
• Starting/ charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan

6.2L VIN 8, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008

List of elements for 6.2L VIN 8, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Tahoe 2008:

• (approximately 3 cm (1.18 in) from ignition coil 4 breakout)
• (approximately 3 cm (1.18 in) from ignition coil 5 breakout)
• (approximately 5 cm (1.97 in) from x111 breakout) j112
• (lower
• (on front of intake manifold) throttle body
• (rear of engine) (except 6.2l & 4.8l) valve lifter oil manifold (vlom) assembly
• (top left of engine, mounted above intake manifold) evaporative emission (evap) canister purge solenoid valve
• 5v ref
• A pnk
• Bank 1 sens 1
• Bank 2 sens 1
• Charge ind sig
• Ckp sens sig
• Cmp sens sig
• Ctrl
• Cylinder shutoff solenoid 1 cylinder 1
• Cylinder shutoff solenoid 2 cylinder 4
• Cylinder shutoff solenoid 3 cylinder 6
• Cylinder shutoff solenoid 4 cylinder 7
• E pnk
• Engine control module (ecm) (left side of engine compt)
• G102
• G102 (lower left front of engine)
• Gnd
• Ign
• Ign coil 1 ctrl
• Ign coil 2 ctrl
• Ign coil 3 ctrl
• Ign coil 4 ctrl
• Ign coil 5 ctrl
• Ign coil 6 ctrl
• Ign coil 7 ctrl
• Ign coil 8 ctrl
• Ignition coils (left side of engine)
• Ignition coils (right side of engine)
• J107
• J108
• J109 (approximately 5 cm (1.97 in) from x111 breakout)
• J110
• J111
• Left front of engine)
• Low ref
• Map sens sig
• Pnk
• Pnk d
• Pos sens 1 sig
• Pos sens 2 sig
• Press sens sig
• Red
• Red c
• Ref lo
• Starting/charging system
• Tan