ENGINE PERFORMANCE – GMC Yukon 1999 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

5.7L

5.7L VIN R, Engine Performance Wiring Diagrams (1 of 4) for GMC Yukon 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (1 of 4) for GMC Yukon 1999:

• (attached to right rear of throttle body) idle air control (iac) valve
• (behind right side of dash)
• (bottom front of engine near, crank pulley) crankshaft position sensor
• (top right side of engine) evaporative emission canister purge valve
• 1-2 shift sol ctrl
• 2-3 shift sol ctrl
• 3-2 shift sol ctrl
• A/t w/ 4wd
• Air pump rel ctrl
• Cam posit sens sig
• Camshaft position sensor (inside distributor)
• Crank posit sens sig
• Ect sens sig
• Egr posit sig
• Fuel gauge lvl
• Fuel tank press sens
• G119 (right front of engine block)
• Heated oxygen sensor (5.ol: bank 1 sensor 3, 5.7l w/ below 8600 gvw: bank 1 sensor 2, 5.7l w/ over 8600 gvw: bank 2 sensor 2) (in exhaust pipe in back of right catalytic converter)
• Heated oxygen sensor (bank 1 sensor 1) (in exhaust pipe in front of left catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (in exhaust pipe in front of right catalytic converter)
• Ho2s low
• Ho2s sig
• Iat sens sig
• Idle air ctrl (iac) a hi
• Idle air ctrl (iac) b lo
• Ign feed
• 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 sens sig
• Knock sensor (ks) (right side of engine block, below exhaust manifold, forward of starter)
• Map sens input
• Mass air flow sens sig
• Nca
• Others
• Pnk
• Pnk c ignition feed
• Pnk pnk
• S148
• S149
• S162
• Sens rtn
• Sens sig
• Sensor return
• Tan
• Tcc pwm sol ctrl
• Tcc sol ctrl
• Temp sens input
• Throttle posit sens
• Vehicle control module (vcm) (left side of engine compt)
• Vehicle speed sensor (left side of transmission, left side of transfer case w/ 4wd)
• Vehicle speed sensor buffer
• Vent ctlr
• Vss rtn
• Vss sig
• Vss signal

5.7L VIN R, Engine Performance Wiring Diagrams (2 of 4) for GMC Yukon 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (2 of 4) for GMC Yukon 1999:

• 2-3 red
• 3-2 red shift solenoid
• Air injection reaction (secondary) pump (on front of engine)
• Air injection reaction relay (underhood fuse/ relay center)
• Automatic transmission
• Aux-b fuse 30a stud-b
• Ecm1 fuse 20a
• Eng1 k7
• Evaporative emissions (evap) canister vent valve (left side of engine compt)
• Exhaust gas recirculation (egr) valve (front of engine near thermostat housing)
• Fluid pressure (tfp) manual valve position switch
• Fluid temperature sensor
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Fuse 20a l8
• G127 (left side of engine compt, on air injection reaction pump)
• Heated oxygen sensor (5.ol: bank 1 sensor 2, 5.7l w/ below 8600 gvw: bank 2 sensor 2, 5.7l w/ over 8600 gvw: bank 1 sensor 2) (in exhaust pipe in back of left catalytic converter)
• Hot at all times
• Hot in run & start
• Nca
• Pnk
• Pnk pnk pnk tan red
• Pressure control solenoid valve
• Red
• Red tcc solenoid
• S104
• S108
• S147
• S161
• S166 (eng harn, 18 cm from ebcm breakout)
• Shift solenoid
• Tan
• Torque convertor clutch pulse width modulation solenoid
• Under hood fuse-relay center
• W/4l80e 4-speed trans oly

5.7L VIN R, Engine Performance Wiring Diagrams (3 of 4) for GMC Yukon 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (3 of 4) for GMC Yukon 1999:

• (eng harn, approx 17 cm from breakout to egr valve) s106
• (eng harn, hd: 10 cm from egr valve breakout, ld: 27 cm from egr valve breakout)
• (engine harn, approx 16 cm from breakout to egr valve)
• (inside left frame rail, near rear crossmember)
• (inside left frame rail, near rear crossmember) g415
• (right rear of cylinder head) g117
• (taillamp extension harn, 6 cm from the fuel pump harn breakout)
• (taillamp extension harness, approx 10 cm from fuel pump balance module breakout)
• Automatic transmission input shaft speed sensor (left side of transmission)
• Balance fuel pump (on inside left frame rail, near front of rear tank)
• Convenience center (under left side of dash)
• D w/ dual fuel tanks
• Engine coolant temperature sensor (top right front of engine, near thermostat housing)
• F7 ign e fuse 10a g8
• Fuel gauge input
• Fuel pump & sender (in fuel tank)
• Fuel pump balance module (inside left side of frame rail)
• Fuel pump balance relay (on fuel pump balance module)
• Fuel tank pressure sensor (in fuel tank)
• Fuel tanks
• G415
• Gauges fuse 4 10a
• Ground
• Hot in off, run or start
• Hot in run or start
• I/p fuse block
• Ignition
• Instrument cluster
• Intake air temperature sensor (in air intake duct)
• M/t only
• Manifold absolute pressure (map) sensor (top right of engine, near fuel injectors)
• Mass air flow sensor (in air intake duct)
• Output to gauge c2
• Pnk
• Pnk a
• Pnk pnk tan red
• Primary tank fuel lvl sig
• Relay ctrl
• S103
• S213
• S231
• S232
• S315
• S318
• S319
• S324
• S430
• Secon tank fuel lvl sig
• Secondary fuel gauge sender (in fuel tank)
• Service engine soon indicator
• Speedometer input
• Tachometer input
• Tan a
• Throttle position sensor (on throttle body assembly)
• Trans fuse 20 10a
• Underhood fuse-relay center pnk
• Upshift lamp
• W/ dual fuel tank
• W/ dual w/o dual fuel tank
• W/o dual fuel tank
• W/o dual fuel tanks

5.7L VIN R, Engine Performance Wiring Diagrams (4 of 4) for GMC Yukon 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (4 of 4) for GMC Yukon 1999:

• (engine harness, approx 13 cm from s150
• (engine harness, approx 7 cm from ebcm breakout)
• (i/p harn, 20 cm from inflatable restraint switch breakout)
• (i/p harn, harness, 13 cm from left engine grommet)
• (i/p harness, approx 40 cm from instrument cluster breakout)
• (or
• (right rear of cylinder head) g120
• 4wd input
• 5v ref voltage
• A pnk
• A/c comp enable rel
• A/c request signal
• A/t
• Air conditioning system
• Air inlet vlv mtr ctlr
• Aux fan relay
• Brake sw input
• Brake switch input
• Check eng lp ctrl
• Clutch pedal position (cpp) switch (at top of clutch pedal)
• Cooling fans system
• Cpp sw input
• Cruise control module (left rear of engine compt, on firewall)
• Cruise ctrl sig eng
• Data link connector (under left side of dash, left side of steering column)
• Distributor
• Dual fuel mod return
• Ebcm breakout)
• Egr vlv feed
• Egr vlv ground
• Electronic brake control module (ebcm) (on left side of engine compt)
• Electronic variable orifice/ passlock control module (center of dash)
• Est output sig
• Evap can purge vlv
• F11 ecmb fuse 20a
• Force motor feed
• Force motor return
• Four whl dr sig
• Four whl dr sig lo
• Fuel level input
• Fuel pump a prime connector (left rear of eng compt)
• Fuel pump relay
• Fuel pump rly ctrl
• G117 (right rear of cylinder head)
• G12
• Ground
• High voltage coil wire
• Hot at all times
• Hot in run
• I/p fuse block
• Ign coil out
• Ign input
• Ign timing sig.
• Ignition
• Ignition coil (top left rear of engine)
• Ignition coil driver (left rear side of engine)
• Ignition feed
• M/t
• M4 brake fuse 18 10a n3
• Pnk
• Pressure switch input
• Radio
• Red
• S101
• S103
• S111 (engine harness, approx 10 cm from ebcm breakout)
• S151
• S152
• S153
• S221
• Sensor ground
• Sensor return
• Serial data sig
• Shift ind lp out
• Speed sensor
• Speed sensor input
• Stoplamp switch (top of brake pedal)
• Stoplamp/ clutch switch input
• Switch signal
• Trans input speed rtn
• Trans input speed sig
• Transfer case control module (under dash, on steering column support bracket)
• Transfer case switch (left top of transfer case)
• Transmissions system
• Underhood fuse- relay center
• Vcm sig
• Vehicle control module (vcm) (left side of engine compt)
• Vss input
• Vss sig out