ENGINE PERFORMANCE – GMC Savana Special G3500 1997 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

5.7L

5.7L (VIN R), Engine Performance Wiring Diagrams (1 of 4) for GMC Savana Special G3500 1997

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (1 of 4) for GMC Savana Special G3500 1997:

• (lower front of engine, near crankshaft) crankshaft position sensor
• (right side of engine) evaporative emission canister purge valve
• (top left side of engine) idle air control valve
• A/c compressor enable relay
• Camshaft position sensor (part of distributor, top rear of engine)
• Coil
• Coil "a" hi
• Coil "a" lo
• Coil "b" hi
• Coil "b" lo
• Egr sol output
• Fuel inj out no.1
• Fuel inj out no.2
• Fuel inj out no.3
• Fuel inj out no.4
• Fuel inj out no.5
• Fuel inj out no.6
• Fuel inj out no.7
• Fuel inj out no.8
• G117 (right rear of engine)
• Ground
• Heated oxygen sensor bank 1 sensor 1 (in exhaust pipe in front of catalytic converter)
• Heated oxygen sensor bank 1 sensor 2 (in exhaust pipe in back of catalytic converter)
• Heated oxygen sensor bank 1 sensor 3 (in exhaust pipe in back of catalytic converter)
• Ignition
• Knock sens signal
• Knock sensor (top rear of engine)
• Maf signal
• Map sens signal
• Nca
• Pnk
• Pnk c
• Position signal
• Return
• S101
• S103
• S301
• S304
• Sensor signal
• Shift sol a output
• Shift sol b output
• Shift solenoid output
• Signal
• Solenoid output
• Solid state
• Tan
• Tcc sol output
• Temp sens signal
• Underhood fuse-relay center
• Vehicle control module (engine compartment, left fender)
• Vehicle speed sensor (left side of transmission)
• Vss signal

5.7L (VIN R), Engine Performance Wiring Diagrams (2 of 4) for GMC Savana Special G3500 1997

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (2 of 4) for GMC Savana Special G3500 1997:

• (w/4l60-e trans.)
• (w/4l80-e trans.)
• 1-2 shift solenoid
• 2-3 shift solenoid
• 3-2 shift solenoid
• A/t fluid pressure manual valve position switch
• Automatic transmission
• Ecm-1 mini fuse 20a
• Exhaust gas recirculation valve (top front of engine)
• Fuel inj. no.1
• Fuel inj. no.2
• Fuel inj. no.3
• Fuel inj. no.4
• Fuel inj. no.5
• Fuel inj. no.6
• Fuel inj. no.7
• Fuel inj. no.8
• Heated oxygen sensor bank 2 sensor 1 (in exhaust pipe in front of catalytic converter)
• Hot in run or start
• Ignition
• K7 eng-1 mini fuse 20a l8
• Nca
• Pnk
• Pnk tan
• Pressure control solenoid valve
• Red
• S130
• S131
• S132
• S133
• Tan
• Tcc pcm solenoid valve
• Tcc solenoid vlave
• Temp sensor ground
• Temp sensor signal
• Under hood fuse-relay center
• W/4l60e 4-speed trans. only

5.7L (VIN R), Engine Performance Wiring Diagrams (3 of 4) for GMC Savana Special G3500 1997

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (3 of 4) for GMC Savana Special G3500 1997:

• (engine harness, approx 12 cm from fuel injector breakout)
• (engine harness, approx 15 cm from egr sensor breakout)
• (engine harness, approx 33 cm from egr sensor breakout)
• (engine harness, approx 4 cm from ect sensor breakout)
• (right rear of engine) g117
• B14
• B17
• Ecm-b mini fuse 20a
• Engine coolant temperature gauge sensor (top front of engine)
• Evaporative emission (evap) canister vacuum switch (right side of engine)
• F11
• Fuel pump and sender (in fuel tank under rear of vehicle)
• Fuel pump prime connector
• Fuel pump relay
• Fuel pump switch & engine oil pressure gauge sensor
• G12
• Gauges fuse 4 10a
• Hot at all times
• Hot in off, run or start
• Hot in run or start
• I/p fuse block
• Instrument cluster
• Intake air temperature sensor (part of air intake duct, front of engine compartment)
• Malfunction indicator lamp (mil) "service engine soon"
• Manifold absolute pressure sensor (top right side of engine)
• Mass air flow sensor (part of air intake duct, top front of engine)
• Oil pressure gauge input
• Pnk
• Pnk tan
• Red
• S101
• S102
• S120
• S136
• S137
• S138
• S139
• S157
• S216
• Speedometer/ odometer input
• Tan
• Tan b
• Throttle position sensor (top left side of engine)
• Trans fuse 20 10a
• Underhood fuse-relay center

5.7L (VIN R), Engine Performance Wiring Diagrams (4 of 4) for GMC Savana Special G3500 1997

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (4 of 4) for GMC Savana Special G3500 1997:

• (engine harness, 20 cm from fuel injector breakout)
• (engine harness, 4 cm grom breakout to ground towards transmission) s153
• (i/p harness, approx 17 cm into vss breakout)
• (i/p harness, approx 27 cm from engine sensors inline conn. toward bulkhead)
• (right rear of engine) g117
• 5 volt reference
• 5 volts reference
• A/c signal
• Air conditioning system
• Automatic transmission input shaft speed sensor (w/4l80-e) (left side of transmission)
• Battery
• Brake switch input
• Cruise control module (front of engine compartment near left fender)
• Cruise ctrl sig eng
• Data link connector (under left side of i/p)
• Distributor
• Elec spark timing
• Electronic brake control module (ebcm) (left frame rail near center of vehicle)
• Force motor feed
• Force motor return
• Fuel pump rly feed
• Ground
• High voltage coil wire
• Hot in run
• I/p fuse block
• Ignition
• Ignition coil (top right side of engine)
• Ignition control module (top right side of engine)
• M4 brake fuse 18 10a n3
• Mal func lp output
• Pnk
• Pnk a
• Power steering control module (center of i/p)
• Pressure sw signal
• Radio
• Red
• Return
• S101
• S113
• S122
• S154
• S210
• S239
• Sensor ground
• Serial data
• Service circuit power
• Signal
• Solid state
• Speed sensor input
• Stoplamp switch input
• Tcc signal
• Tcc/stoplamp switch (below center of i/p, near brake pedal lever)
• Vcm signal
• Vehicle control module (engine compartment, left fender)
• Vss signal
• Vss signal output

6.5L

6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 4) for GMC Savana Special G3500 1997

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 4) for GMC Savana Special G3500 1997:

• (at generator bracket) g119
• (engine harness, near left top of engine)
• (engine jumper harness, approx 4 cm into crankshaft position sensor breakout)
• (engine jumper harness, approx 6 cm from optical fuel temperature sensor breakout)
• (i/p harness, approx 4 cm from i/p breakout)
• (lower left front of engine) crankshaft position sensor
• (right top of engine)
• (top front of engine) engine coolant temperature sensor
• (top of engine)
• 12v
• 3/2 shift sol.
• 5 vref
• 5v ref volt
• A/c request sig
• A/c system
• A/t fluid pressure (tfp) manual valve position switch
• A10
• A11 3 mode cruise a12
• Anti-lock brake system
• App no.1 gnd
• App no.1 ref volt
• App no.1 sig
• App no.2 gnd
• App no.2 sig
• App no.3 gnd
• App no.3 ref volt
• App no.3 sig
• Automatic transmission input shaft speed sensor (left side of transmission near front)
• B10
• B11
• B12
• Boost pressure sensor
• Boost sens input
• Brake sw in
• Brake switch input
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• Cam posit sens sig rtn
• Camshaft posit sens
• Closure gnd
• Cruise control
• Cruise ctrl sw engage
• Cruise eng sw retard
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Ect temp sens in
• Engine crank sens input
• Fuel pump input
• Fuel pump rly ctrl
• Fuel sol closure (5v sig)
• Fuel temp sens (5v sig)
• Glow plug "wait" lp out
• Glow plug relay
• Ground
• Heavy duty electronic 4-spd automatic overdrive transmission
• Intake air temperature sensor
• Intake man air temp sens
• On/off
• Pnk
• Powertrain control module (pcm) (under right end of i/p, above blower motor)
• Pressure control solenoid valve
• Pressure ctrl sol
• Radio, power steering control module
• Range mode sel a
• Range mode sel b
• Range mode sel c
• Red
• Resume
• S112
• S115
• S124
• S238
• Second vss sig
• Sensor gnd
• Sensor return
• Set
• Shift sol. a
• Shift sol. b
• Solid state
• Switch
• Tan
• Timing stepper mtr (high)
• Timing stepper mtr (low)
• Transmission speed input
• Transmission temp input
• Transmission temperature sensor
• Vehicle speed input
• Vehicle speed sensor (on transmission, left rear side)
• Vehicle speed sensor buffer (below left side of i/p)
• Vss hi
• Vss lo
• Vss rtn
• Vss sig

6.5L (VIN F), Engine Performance Wiring Diagrams (2 of 4) for GMC Savana Special G3500 1997

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (2 of 4) for GMC Savana Special G3500 1997:

• (engine jumper harness, approx 4 cm into optical fuel temperature sensor breakout)
• 5 volt ref
• Cmp sig
• D2 trans fuse 20 10a f1
• D8 stop fuse 1 25a c7
• Electronic brake control module (left frame rail, near center of vehicle)
• Electronic throttle actuator control module (below i/p, attached to accelerator bracket)
• Engine shutoff solenoid
• Fuel f5
• Fuel solenoid
• Fuel solenoid driver
• High res sig
• Hot at all times
• Hot in off, run or start
• Hot in run
• Hot in run or start
• I/p fuse block
• Ignition timing stepper motor (top front of engine)
• M4 brake fuse 18 10a n3
• Optical fuel temperature sensor
• Pnk
• Pnk pnk
• Red
• S105
• S111
• S114 (i/p harness)
• S117
• S210
• Sens grd
• Solenoid fuse 20a
• Tcc/stoplamp switch (at rear of brake pedal support bracket)
• Underhood fuse-relay center

6.5L (VIN F), Engine Performance Wiring Diagrams (3 of 4) for GMC Savana Special G3500 1997

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (3 of 4) for GMC Savana Special G3500 1997:

• (at generator bracket) g119
• (engine harness, approx 10 cm from a/t input shaft speed sensor breakout) s138
• (left frame rail, near center of vehicle)
• (near thermostat housing)
• A15
• B13
• B14
• B15
• B17
• Ecm-b fuse 20a
• F11
• Fuel lift pump
• Fuel pump prime connector
• Fuel pump relay (in underhood fuse-relay center)
• Fuel pump switch and engine oil pressure gauge sensor (top rear of engine)
• G12
• G125
• Gauges fuse 4 10a
• Hot at all times
• Hot in run or start
• I/p fuse block
• Instrument cluster
• Oil press gauge
• Pnk
• Red
• S101
• S102
• S112
• S120
• S216
• Service engine soon indicator
• Service throttle soon indicator
• Speedometer solid state logic
• Tan
• Underhood fuse-relay center
• Wait to start "glow plugs" indicator
• Water in fuel indicator
• Water in-fuel sensor

6.5L (VIN F), Engine Performance Wiring Diagrams (4 of 4) for GMC Savana Special G3500 1997

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (4 of 4) for GMC Savana Special G3500 1997:

• "serv eng soon" ind
• "serv throttle soon" ind
• (engine harness, approx 27 cm from main harness breakout)
• (engine harness, toward stator solenoid breakout)
• (engine jumper harness, approx 4 cm into fuel solenoid driver breakout)
• (left side of i/p)
• 12v battery (fused)
• 12v battery fused
• A/c enable
• A/c system
• App no.2 ref voltage
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (dlc)
• Electronic brake control module (left frame rail, near center of vehicle)
• Eng-i k7
• Engine shutoff sol out
• Fuel heater (top rear of engine)
• Fuel sol module (5 vref)
• Fuel sol module feed
• Fuse 20a
• G119 (at generator bracket)
• G125 (front of engine, near thermostat housing)
• Glow plug 1
• Glow plug 2
• Glow plug 3
• Glow plug 4
• Glow plug 5
• Glow plug 6
• Glow plug 7
• Glow plug 8
• Glow plug relay (top right side of engine)
• Hot at all times
• Hot in run or start
• Ignition
• Pcm gnd
• Pnk
• Powertrain control module (pcm) (under right end of i/p, above blower motor)
• Red
• S101
• S102
• S108
• S116
• S121
• S123
• S130
• S157
• Serial data sig
• Shift sol a input
• Shift sol b input
• Tcc pwm sol
• Underhood fuse-relay center
• Wait to start sig
• Wastegate sol ctrl
• Wastegate solenoid

7.4L

7.4L (VIN J), Engine Performance Wiring Diagrams (1 of 4) for GMC Savana Special G3500 1997

List of elements for 7.4L (VIN J), Engine Performance Wiring Diagrams (1 of 4) for GMC Savana Special G3500 1997:

• (engine harness, approx 5 cm from map sensor breakout)
• 1-2 shift sol ctrl
• 12v ign feed
• 2-3 shift sol ctrl
• A/c compressor enable relay (underhood fuse/relay center)
• A/c enable
• Air injection rly ctrl
• Anti-lock brakes system
• Cam pos sens signal
• Camshaft position sensor (inside distributor assembly)
• Ckp pos sens rtn
• Ckp pos signal in
• Crankshaft position sensor (lower front of engine)
• Ect sens signal
• Egr pos input
• Egr sol ctrl
• Evap can purge valve
• Evaporative emissions canister purge valve (right side of engine)
• Fuel inj 1 ctrl
• Fuel inj 2 ctrl
• Fuel inj 3 ctrl
• Fuel inj 4 ctrl
• Fuel inj 5 ctrl
• Fuel inj 6 ctrl
• Fuel inj 7 ctrl
• Fuel inj 8 ctrl
• G117 (rear of right cylinder head)
• Heated oxygen sensor bank 2 sensor 1 (on right exhaust pipe ahead of catalytic converter)
• Idle air control valve (side of throttle body)
• Idle air ctrl a hi (iac)
• Idle air ctrl b lo (iac)
• Ign feed
• Intake air temp sens
• Knock sens signal
• Knock sensor (on left side of engine block below exhaust manifold)
• Knock sensor (on right side of engine block ahead of starter)
• Left sens hi (post cat)
• Left sens hi (pre cat)
• Left sens lo (post cat)
• Left sens lo (pre cat)
• Map signal
• Mass air flow sens sig
• Nca
• Pnk
• Red
• Right sens lo (post cat)
• Right sens lo (pre cat)
• Rt sens hi (post cat)
• Rt sens hi (pre cat)
• S131
• S147
• S152
• Secondary air injection reaction pump clutch (front of air injection pump, front of engine)
• Secondary air injection reaction pump relay (underhood fuse/ relay center)
• Sens rtn
• Sens sig
• Sensor rtn
• Sensor signal
• Tan
• Tcc sol ctrl
• Throttle pos sens
• Trans temp sens in
• Vehicle control module (vcm) (engine compartment, on left fender apron)
• Vehicle speed sensor (left side of trans- mission)
• Vss rtn
• Vss signal
• Vss signal out

7.4L (VIN J), Engine Performance Wiring Diagrams (2 of 4) for GMC Savana Special G3500 1997

List of elements for 7.4L (VIN J), Engine Performance Wiring Diagrams (2 of 4) for GMC Savana Special G3500 1997:

• (engine harness, approx 7 cm from engine coolant temperature sensor)
• (fuel injector harness, near fuel injector connector) s140
• (fuel injector harness, near fuel injector connector) s141
• Automatic transmission
• Eng-1 fuse 20a
• Exhaust gas recirculation valve solenoid (right side of engine)
• Fluid temperature sensor
• Fuel inj. no.1
• Fuel inj. no.2
• Fuel inj. no.3
• Fuel inj. no.4
• Fuel inj. no.5
• Fuel inj. no.6
• Fuel inj. no.7
• Fuel inj. no.8
• G117 (rear of right cylinder head)
• Heated oxygen sensor bank 1 sensor 1 (on left exhaust pipe ahead of catalytic converter)
• Heated oxygen sensor bank 1 sensor 2 (on left exhaust pipe behind catalytic converter)
• Heated oxygen sensor bank 2 sensor 2 (on right exhaust pipe behind catalytic converter)
• Hot in off, run or start
• Hot in run or start
• I/p fuse block
• Ignition
• Intake air temp sensor (mounted in fresh air intake duct)
• N pressure
• Nca
• P pressure
• Pnk
• Pressure control solenoid valve
• R pressure
• Red
• S tcc solenoid
• S101
• S130
• S136
• S301
• S304
• Solenoid 1-2
• Solenoid 2-3
• Switch
• Tan
• Trans fuse 20 10a
• Underhood fuse/relay center

7.4L (VIN J), Engine Performance Wiring Diagrams (3 of 4) for GMC Savana Special G3500 1997

List of elements for 7.4L (VIN J), Engine Performance Wiring Diagrams (3 of 4) for GMC Savana Special G3500 1997:

• (engine harness, approx 14 cm from maf senson breakout)
• (engine harness, approx 21 cm from maf sensor breakout)
• (engine harness, approx 8 cm from fuel injector harness breakout)
• B13
• B14
• B17
• Brake fuse 18 10a
• Engine coolant temperature sensor (top front of engine)
• Fuel gauge
• Fuel pump and sender (on top of fuel tank)
• Fuel pump switch and engine oil pressure gauge sensor (behind distributor)
• Fuel sender buffer module (right side of i/p)
• G117 (rear of right cylinder head)
• G125 (top front of engine)
• Gauges fuse 4 10a
• Hot in run
• Hot in run or start
• I/p fuse block
• Instrument cluster
• Manifold absolute pressure (map) sensor (top right side of engine)
• Mass air flow sensor (top front of engine, in fresh air intake duct)
• Oil press gauge
• Pnk
• Red
• S101
• S102
• S112
• S122
• S137
• S138
• S139
• S210
• S216
• Service engine soon indicator
• Speed meter
• Tan
• Tcc/stop- lamp switch (under left side of i/p, on brake pedal support bracket)
• Throttle position sensor (on side of throttle body)

7.4L (VIN J), Engine Performance Wiring Diagrams (4 of 4) for GMC Savana Special G3500 1997

List of elements for 7.4L (VIN J), Engine Performance Wiring Diagrams (4 of 4) for GMC Savana Special G3500 1997:

• (engine harness, 27 cm from maf sensor breakout)
• (i/p harness, approx 17 cm into vssb breakout)
• (i/p harness, approx 27 cm from bulkhead connector) s113
• 5v ref
• 5v return
• A/c low pressure sig
• A/c request signal
• Air conditioning system
• Anti-lock brakes system
• Automatic transmission input shaft speed sensor (inside front of transmission)
• B +
• Brake sw input
• Check engine lp ctrl
• Cruise control module (front of engine compt, near left fender)
• Cruise ctrl engaged
• Cruise ctrl sig-engaged
• Data link connector (under left side of i/p)
• Distributor
• Ecm-b fuse 20a
• Ecm-i fuse 20a
• Elec spk timing ctrl sig
• Elec spk timing ctrl signal
• Est ctrl
• Evap can purge vac in
• Evaporative emissions canister vacuum switch (right side of engine)
• Force mtr feed
• Force mtr rtn
• Fuel pmp rly ctrl
• Fuel pump prime connector
• Fuel pump relay (underhood fuse/ relay center)
• G117 (rear of right cylinder head)
• Ground
• High voltage coil wire
• Hot at all times
• Hot in run or start
• Ign feed
• Ignition coil (top right side of engine)
• Ignition control module (on bracket at rear of intake plenum)
• Nca
• Pnk
• Press sw sig
• Radio, power steering control module
• Red
• S101
• S102
• S120
• S132
• S153
• S154
• S239
• Sens ground
• Sens rtn
• Serial data
• Service circuit power
• Speed sensor input
• Tcc/stoplamp input
• Underhood fuse/relay center
• Vehicle control module (vcm) (engine compartment, on left fender apron)
• Vss output
• Vss signal