ENGINE PERFORMANCE – GMC Sonoma 1994 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.2L

2.2L (VIN 4), Engine Performance Wiring Diagrams (1 of 2) for GMC Sonoma 1994

List of elements for 2.2L (VIN 4), Engine Performance Wiring Diagrams (1 of 2) for GMC Sonoma 1994:

• (frame ground)
• 12v battery
• 12v ign
• 5v ref
• 5v return a
• 5v return b
• 5v sensor ref
• A/c
• A/c comp relay
• A/c compressor relay
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Brake switch
• C11
• C13
• Center of cowl)
• Coolant temp sens
• Crank pos iput
• Cruise control module
• Cruise ind ctrl
• Data link connector (below right of steering column)
• Distributor ref hi
• Distributor ref lo
• Dlc
• Dlc serial data
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecmb fuse 15a
• Ecmi fuse 10a
• Egr electronic regulator solenoid valve (top of engine, above a/c comporessor)
• Egr/evrv
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel injectors (top of engine inside throttle body)
• Fuel pump (in fuel tank)
• Fuel pump input
• Fuel pump prime connector (engine compartment,
• Fuel pump relay
• Fuel pump relay (behind left side of i/p in convenience center)
• Fuel pump/ oil pressure switch (right side of engine)
• Fuse block (behind left side of i/p)
• G110 (left front of engine)
• G117 (lower rear of engine)
• Gear)
• Hot at all times
• Hot in run, bulb test or start
• Idle air control motor (top right of engine)
• Ign/gau fuse 20a
• Ignition bypass
• Ignition control
• Instrument cluster
• Low side inj 1& 4
• Low side inj 2 & 3
• Malfunction indicator lamp
• Manifold air temp sens
• Map sensor
• Mil control
• O2 sensor high
• O2 sensor low
• Oxygen sensor (in exhaust manifold)
• Pnk
• Power st pres sw
• 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
• Throttle position sens
• Trans foce mtr hi
• Trans force mtr lo
• Trans range mode a
• Trans range mode b
• Trans range mode c
• Trans shift sol a
• Trans shift sol b
• Trans temp sensor
• Upshift(trans 2/3 sol)
• Vehicle speed sensor buffer (behind right side of i/p)
• Vss buffer

2.2L (VIN 4), Engine Performance Wiring Diagrams (2 of 2) for GMC Sonoma 1994

List of elements for 2.2L (VIN 4), Engine Performance Wiring Diagrams (2 of 2) for GMC Sonoma 1994:

• (rear of engine)
• 1-2 shift sol
• 1x sig
• 2-3 shift sol
• 3
• 3-2 control solenoid
• A tan
• A/t
• Accy
• Brake fuse 15a
• Brake switch (on brake pedal bracket)
• Bulb test
• C201
• Ckp sens
• Crankshaft position sensor (location not available)
• Electronic 4 - speed overdrive transmission
• Electronic ignition (ei) system module (left side of engine)
• Engine coolant temperature sensor (top rear of engine)
• Force motor
• Fuse block (behind left side of i/p)
• G110 (left front of engine)
• G117 (lower rear of engine)
• Gnd
• Hot at all times
• Hot in run
• Ic bypass
• Ic ref hi
• Ic ref lo
• Ic sig
• Ignition coil
• Instrument cluster (tachometer)
• Instrument cluster (upshift indicator)
• Intake air temperature sensor (right side of engine, near generator)
• Lock
• M/t
• Manifold absolute pressure sensor (top right
• Nca b
• Off
• Pnk
• Pri
• Red
• Run
• Sec
• Shield
• Side of engine)
• Spark plugs
• Start
• Tach sig
• Tan
• Tcc sol
• Tp sensor (right side of engine)
• Trans range press sw assembly
• Trans- mission fluid temp sensor

4.3L

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

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

• (frame ground)
• 12v battery
• 12v ignition
• 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
• Electric shift trasfer case control module
• Evap canister purge ctrl
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Four wheel drive input
• 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 (under center of i/p)
• Fuel pump relay ctrl
• Fuel pump/ oil pressure switch (top rear of engine, near distributor)
• Fuse block (behind left side of i/p)
• G114 (rear of left cylinder head)
• G117 (rear of right cylinder head)
• Gauges fuse 20a
• Hot at all times
• Hot in run,
• Iat sensor input
• Ignition bypass
• Ignition control (ic)
• Instrument cluster
• Knock sensor (in left cylinder head)
• Knock sensor (top rear of engine)
• 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
• Tcc enable
• Throttle position sensor in
• Trans shift 2/3 solenoid
• Variable tuning control relay (engine compartment, left side of cowl)
• Variable tuning control solenoid (location not available)
• Variable tuning ctrl rly
• Vss buffer signal

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

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

• (front of engine)
• (rear of engine)
• 1-2 shift sol
• 2-3 shift sol
• 3-2 control solenoid
• A pnk
• Accy
• Brake fuse 15a
• Bulb test
• C11
• Distributor
• Distributor assembly
• Electronic 4 - speed overdrive transmission
• Engine coolant tmperature sensor
• Evaporative canister purge solenoid (top left side of engine)
• Force motor
• Fuse block (behind left side of i/p)
• G117 (rear of right cylinder head)
• 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 (top rear of engine)
• Ignition switch
• Instrument cluster (tachometer)
• Intake air tmperature sensor (top left front of engine, near generator)
• Linear egr solenoid (top front of engine)
• Lock
• Manifold absolute pressure sensor (top right side of engine)
• Nca
• Off
• Pick-up coil
• Pnk
• Red
• Run
• Start
• Tan
• Tcc sol
• Tcc/brake switch (on brake pedal support)
• Tp sensor (top left front of engine)
• Trans range press sw assembly
• Trans- mission fluid temp sensor
• Vehicle speed sensor buffer (behind right side of i/p)

4.3L (VIN Z), Engine Controls Wiring Diagram, with VCM (1 of 2) for GMC Sonoma 1994

List of elements for 4.3L (VIN Z), Engine Controls Wiring Diagram, with VCM (1 of 2) for GMC Sonoma 1994:

• (frame ground)
• 12v ign
• 12v ignition
• 5 volt ref
• 5 volt return
• A/c compressor relay
• A/c enable relay
• Abs brake warn lamp
• Abs relay
• Anti-lock brake system
• Battery
• Brake press sw input
• Brake press warn lamp
• Brake switch input
• Bulb test or start
• Cruise control module
• Cruise speed sig
• Data link connector (behind left side of i/p)
• Distributor ref hi
• Dlc
• Ecm/batt fuse 15a
• Ecm/ign fuse 10a
• Egr low
• Fuel pump and sender (at fuel tank)
• Fuel pump prime connector (engine compartment on center of cowl)
• Fuel pump relay (under center of i/p)
• Fuel pump relay drive
• Fuel pump switch input
• Fuel pump/ oil pressure switch (top rear of engine, near distributor)
• Fuse block (behind left side of i/p)
• G114 (rear of left cylinder head)
• G117 (rear of right cylinder head)
• Gauges fuse 20a
• Ground
• Hot at all times
• Hot in run,
• Instrument cluster
• Knock sensor (in left cylinder head)
• Knock sensor (top rear of engine)
• Left front wheel spd sens
• Malfunction indicator lamp
• Mil control
• O2 sens high
• O2 sens low
• Pump drive output
• Red
• Right front wheel spd sens
• Speed signal to cluster
• Tan
• Throttle body fuel injector #1 (top center of engine in throttle body)
• Throttle body fuel injector #2 (top center of engine in throttle body)
• Upshift indicator lamp
• Upshift lamp control
• Vehicle control module (above right front wheelhouse)
• Vehicle speed sens

4.3L (VIN Z), Engine Controls Wiring Diagram, with VCM (2 of 2) for GMC Sonoma 1994

List of elements for 4.3L (VIN Z), Engine Controls Wiring Diagram, with VCM (2 of 2) for GMC Sonoma 1994:

• (above right front wheelhouse)
• (front of engine)
• A/c
• A/c assy
• A/c compressor clutch
• Abs pump feedback
• Accy
• Anti-lock control solenoids
• Brake fuse 15a
• Brake switch (on brake pedal support)
• Bulb test
• Coolant temp sensor
• Distributor
• Distributor assembly
• Egr electronic vacuum regulator solenoid valve (rear of throttle body)
• Engine coolant tmperature sensor
• Est
• Est bypass
• Fuse block (behind left side of i/p)
• G114 (rear of left cylinder head)
• G117 (rear of right cylinder head)
• Ground
• Heated oxygen sensor (in y-pipe)
• Heater and a/c control assembly
• Hot at all times
• Hot in run
• Iac a hi
• Iac a lo
• Iac b hi
• Iac b lo
• Idle air control valve (top front of engine near a/c compressor)
• Ignition coil (top rear of engine)
• Ignition switch
• Injector a
• Injector b
• Instrument cluster (tachometer)
• Knock sensor
• Lf iso solenoid
• Lock
• Manifold absolute pressure sensor (top right side of engine)
• Map
• Nca
• Off
• Pick-up coil
• Pnk
• Rf iso solenoid
• Rr iso solenoid
• Run
• Start
• Throttle pos sensor
• Tp sensor (top left front of engine)
• Vehicle control module
• Vehicle speed sensor (left rear of transmission)

4.3L (VIN Z), Engine Controls Wiring Diagram, without VCM (1 of 2) for GMC Sonoma 1994

List of elements for 4.3L (VIN Z), Engine Controls Wiring Diagram, without VCM (1 of 2) for GMC Sonoma 1994:

• (frame ground)
• 12v battery
• 12v ignition
• 5v return b
• 5v sensor ref
• A/c compressor
• 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
• Clutch
• 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
• Electric shift trasfer case control module
• Evap canister purge ctrl
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Four wheel drive input
• Fuel pump and sender (at fuel tank)
• Fuel pump prime connector (engine compartment on center of cowl)
• Fuel pump relay (under center of i/p)
• Fuel pump relay ctrl
• Fuel pump/ oil pressure switch (top rear of engine, near distributor)
• Fuse block (behind left side of i/p)
• G114 (rear of left cylinder head)
• G117 (rear of right cylinder head)
• Gauges fuse 20a
• Hot at all times
• Hot in run,
• Ignition bypass
• Ignition control (ic)
• Instrument cluster
• Knock sensor (in left cylinder head)
• Knock sensor (top rear of engine)
• Knock sensor in
• Lo side inj a
• Lo side inj b
• 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
• Tcc enable
• Throttle body fuel injector #1 (top center of engine in throttle body)
• Throttle body fuel injector #2 (top center of engine in throttle body)
• Throttle position sensor in
• Trans shift 2/3 solenoid
• Vss buffer signal

4.3L (VIN Z), Engine Controls Wiring Diagram, without VCM (2 of 2) for GMC Sonoma 1994

List of elements for 4.3L (VIN Z), Engine Controls Wiring Diagram, without VCM (2 of 2) for GMC Sonoma 1994:

• (front of engine)
• (rear of engine)
• 1-2 shift sol
• 2-3 shift sol
• 3-2 control solenoid
• 49 states & canada
• A pnk
• Accy
• Brake fuse 15a
• Bulb test
• C11
• C13
• Cali- fornia
• California
• Distributor
• Distributor assembly
• Egr electronic vacuum regulator solenoid valve (rear of throttle body)
• Electronic 4 - speed overdrive transmission
• Engine coolant tmperature sensor
• Evaporative canister purge solenoid (top left side of engine)
• Force motor
• Fuse block (behind left side of i/p)
• G114 (rear of left cylinder head)
• G117 (rear of right cylinder head)
• 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 (top rear of engine)
• Ignition switch
• Instrument cluster (tachometer)
• Linear egr solenoid (california only) (top front of engine)
• Lock
• Manifold absolute pressure sensor (top right side of engine)
• Nca
• Off
• Pick-up coil
• Pnk
• Red
• Run
• Start
• Tcc sol
• Tcc/brake switch (on brake pedal support)
• Tp sensor (top left front of engine)
• Trans range press sw assembly
• Trans- mission fluid temp sensor
• Vehicle speed sensor buffer (behind right side of i/p)