ENGINE PERFORMANCE – GMC Safari 1994 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L (VIN W), Engine Performance Wiring Diagrams (1 of 2) for GMC Safari 1994

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (1 of 2) for GMC Safari 1994:

• 12v battery
• 12v ignition
• 5v return a
• 5v return b
• 5v sensor ref
• A/c compressor clutch
• A/c on signal in
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Brake sw to pcm
• Bulb test or start
• Coolant temp sensor
• Cruise control module
• Cruise ind reg grd
• Data link connector (behind left side of i/p)
• Distributor ref hi
• Distributor ref lo
• Dlc
• Dlc serial data
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm/batt fuse 15a
• Ecm/ign fuse 10a
• Egr position input
• Egr valve solenoid
• Elec fuel pump in
• Evap canister purge ctrl
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel injector (top of engine inside plenum)
• Fuel pump and sender (at fuel tank)
• Fuel pump prime connector (engine compartment on center of cowl)
• Fuel pump relay (right cowl, above blower motor)
• Fuel pump relay ctrl
• Fuel pump/ oil pressure switch (top rear of engine, near distributor)
• Fuse block (behind left side of i/p)
• G110 (top front of engine)
• G114 (left rear of engine)
• Gauges fuse 20a
• Hot at all times
• Hot in run,
• Iat sensor input
• Ignition bypass
• Ignition control (ic)
• Instrument cluster
• Knock sensor (rear of right cylinder head)
• Knock sensor (rear side of left cylinder head)
• Knock sensor in
• Lo side inj a
• Malfunction indicator lamp
• Map sensor in
• Mil indicator ctrl
• Oxygen sensor hi
• Oxygen sensor lo
• Pcm to trans temp sensor
• Pcm trans force mtr hi
• Pcm trans force mtr lo
• Pcm trans range a
• Pcm trans range b
• Pcm trans range c
• Pcm trans shift sol a
• Pcm trans shift sol b
• Pnk
• Powertrain control module (behind right side of i/p)
• Red
• Stepper coil a hi
• Stepper coil a lo
• Stepper coil b hi
• Stepper coil b lo
• System ground
• Tan
• Tcc clutch ctrl
• Throttle position sensor in
• Trans shift 3/2 solenoid
• Variable tuning control relay (engine compartment, right side of cowl)
• Variable tuning control solenoid (center top of intake manifold)
• Variable tuning ctrl rly
• Vss buffer signal

4.3L (VIN W), Engine Performance Wiring Diagrams (2 of 2) for GMC Safari 1994

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (2 of 2) for GMC Safari 1994:

• (front of engine)
• (left rear of engine)
• (top rear
• 1-2 shift sol
• 2-3 shift sol
• 3-2 control solenoid
• Accy
• Assembly
• Brake fuse 15a
• Bulb test
• C11
• C12
• C13
• Distributor
• Electronic 4-speed automatic overdrive transmission
• Engine coolant tmperature sensor
• Evaporative canister purge solenoid (top left side of engine)
• Fuse block (behind left side of i/p)
• G114
• Heated oxygen sensor (in y-pipe)
• Hot at all times
• Hot in run
• Idle air control valve (top front of engine near a/c compressor)
• Ignition coil
• Ignition switch
• Intake air tmperature sensor (top left front of engine, near generator)
• Linear egr solenoid (top front of engine)
• Lock
• Manifold absolute pressure sensor (left side of plenum)
• Nca
• Of engine)
• Off
• Pnk
• Pressure control solenoid
• Red
• Run
• Start
• Tachometer test lead
• Tan
• Tcc sol
• Tcc/brake switch (on brake pedal support)
• Throttle position sensor (top left front of engine)
• Trans range press sw assembly
• Trans- mission fluid temp sensor
• Vehicle speed sensor (left rear side of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

4.3L (VIN Z), Engine Performance Wiring Diagrams (1 of 3) for GMC Safari 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams (1 of 3) for GMC Safari 1994:

• (left top front
• 12v battery
• 12v ignition
• 5v return a
• 5v return b
• 5v sensor ref
• A/c on signal in
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Brake sw to pcm
• C204
• C288
• Coolant temp sensor
• Cruise control system
• Cruise ind reg grd
• Distributor ref hi
• Distributor ref lo
• Dlc
• Dlc serial data
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm-ign fuse 10a
• Egr valve solenoid
• Elec fuel pump in
• Engine control module (under right side of i/p)
• Evap canister purge ctrl
• Evaporative canister purge solenoid (on engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuse block
• G110
• G110 (left top front of engine)
• Hot in run, bulb test, or start
• Idle air control unit (right rear of tbi unit)
• Ignition bypass
• Ignition control (ic)
• Knock sensor in
• Linear egr input
• Linear egr valve (right top of engine)
• Lo side inj a
• Lo side inj b
• Map sensor in
• Mil indicator ctrl
• Of engine)
• Oxygen sensor hi
• Oxygen sensor lo
• Pcm to trans temp sensor
• Pcm trans force mtr hi
• Pcm trans force mtr lo
• Pcm trans range a
• Pcm trans range b
• Pcm trans range c
• Pcm trans shift sol a
• Pcm trans shift sol b
• Pnk
• Red
• Stepper coil a hi
• Stepper coil a lo
• Stepper coil b hi
• Stepper coil b lo
• System ground
• Tan
• Tcc clutch ctrl
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Throttle position sensor in
• Trans shift 3/2 solenoid
• Vss buffer signal

4.3L (VIN Z), Engine Performance Wiring Diagrams (2 of 3) for GMC Safari 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams (2 of 3) for GMC Safari 1994:

• (center rear
• (rear of engine)
• Accy
• Brake fuse 15a
• Bulb test
• Distributor
• Engine coolant temperature sensor (right top front of engine)
• Fuse block
• Gauges fuse 20a
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (center rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor
• Knock sensor (right side of engine, below exhaust manifold)
• Lock
• Manifold absolute pressure sensor (right rear top of engine)
• Nca
• Of engine)
• Off
• Pnk
• Red
• Run
• Service engine soon indicator
• Start
• Tachometer test lead
• Tcc/brake switch (top of brake pedal bracket)
• Throttle position sensor (right side of throttle body)

4.3L (VIN Z), Engine Performance Wiring Diagrams (3 of 3) for GMC Safari 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams (3 of 3) for GMC Safari 1994:

• (analog)
• (digital)
• 3-2 shift solenoid
• A11
• A9 c9
• C11
• C12
• C13
• C14
• C209
• C226
• C232
• Cluster
• Data link connector (under left side of i/p)
• Diagnostic energy reserve module (derm) (behind left side of i/p, near kick panel)
• Ecmb fuse 15a
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender
• Fuel pump oil pressure switch (left rear of engine, near exhaust manifold)
• Fuel pump prime connector
• Fuel pump relay (right rear of engine compartment, near battery junction block)
• Fuse block
• G110 (left top front of engine)
• G117 (rear of right cylinder head)
• Heated oxygen sensor (in exhaust y-pipe)
• Hot at all times
• Instrument
• Oil press in
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Shift sole- noid 1-2
• Shift solenoid 2-3
• Tan
• Torque converter clutch solenoid
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (under right end of i/p)
• Vss in