ENGINE PERFORMANCE – Chevrolet Suburban K2500 1998 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

5.7L

5.7L (VIN R), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Suburban K2500 1998

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Suburban K2500 1998:

• (attached to right rear of throttle body) idle air control (iac) valve
• (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
• 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 (bank 1 sensor 1) (in exhaust pipe in front of left catalytic converter)
• Heated oxygen sensor (bank 1 sensor 3) (in exhaust pipe in back of right 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
• Ignition
• 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
• Pnk
• Pnk c ignition feed
• 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)
• Vent ctlr
• Vss rtn
• Vss sig
• Vss signal

5.7L (VIN R), Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Suburban K2500 1998

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Suburban K2500 1998:

• 1-2 shift sol
• 2-3 shift sol
• 3-2 shift sol
• Air injection reaction (secondary) pump clutch (on front of pump)
• 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 (internal)
• 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
• G119 (right front of engine block)
• Heated oxygen sensor (bank 1 sensor 2) (in exhaust pipe in back of left catalytic converter)
• Hot at all times
• Hot in run & start
• Ignition
• Nca
• Note: fuel injectors are located on top of engine, in intake manifold
• Pnk
• Pnk pnk pnk tan red
• Pressure control solenoid valve
• Red
• S (w/4l80e trans)
• S104
• S108
• S147
• S161
• S166 (eng harn, 18 cm from ebcm breakout)
• Tcc solenoid
• Torque convertor clutch pulse width modulation solenoid
• U (w/4l60e trans)
• Under hood fuse-relay center
• W/4l60e 4-speed trans only

5.7L (VIN R), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Suburban K2500 1998

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Suburban K2500 1998:

• (eng harn, approx 17 cm from breakout to egr valve) s106
• (engine harn, approx 16 cm from breakout to egr valve)
• (engine harn, approx 27 cm in breakout to egr valve)
• (inside left frame rail, near rear crossmember) g415
• (right top of cylinder head) g120
• (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 (a/t iss) sensor
• Balance fuel pump (on inside left frame rail near front of rear tank)
• D w/ dual fuel tanks
• Engine coolant temperature sensor (top right front of engine, near thermostat housing)
• F7 ign e fuse 10a g8
• 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 pump/ oil pressure switch (top center rear of engine, behind distributor)
• Fuel tank pressure sensor (calif only) (in fuel tank)
• Fuel tanks
• Gauges fuse 4 10a
• Hot in off, run or start
• Hot in run or start
• I/p fuse block
• Ignition
• Input fuel gauge
• Input oil gauge
• Input tachometer
• Instrument cluster
• Intake air temperature sensor (in air intake duct)
• M/t only
• Map sensor 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
• S100
• S103
• S213
• S231
• S232
• S315
• S318
• S319
• S324
• S430
• Service engine soon indicator
• Speedometer input
• Tan
• Tan a
• Throttle position sensor (on throttle body assembly)
• Trans fuse 20 10a
• Underhood fuse-relay center pnk
• Upshift lamp
• W/ dual fuel tanks
• W/ dual w/o dual fuel tanks
• W/o dual fuel tanks

5.7L (VIN R), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Suburban K2500 1998

List of elements for 5.7L (VIN R), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Suburban K2500 1998:

• (engine harness, 7 cm from ebcm breakout)
• (engine harness, approx 13 cm from s150
• (engine harness, approx 7 cm from ebcm breakout)
• (i/p harn, 20 cm from inflatable restraint i/p module switch breakout)
• (i/p harn, harness, 13 cm from left engine grommet)
• (i/p harness, approx 40 cm from instrument cluster breakout)
• (or
• (right top of cyl head) g120
• 4wd input
• 5v ref voltage
• 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 compartment, on firewall)
• Cruise ctrl sig eng
• Data link connector (under left side of dash)
• Distributor
• Ebcm breakout)
• Egr vlv feed
• Egr vlv ground
• Electronic brake control module (ebcm) (on left side of engine compartment)
• Est output sig
• Evap can purge vlv
• Evo/passlock steering control module (center of dash)
• F11 ecmb fuse 20a
• Force motor feed
• Force motor return
• Four whl dr sig
• Four whl dr sig lo
• Fuel a pump prime connector
• Fuel level input
• Fuel pump relay
• Fuel pump rly ctrl
• G12
• G120 (right top of cylinder head)
• 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
• Pnk a
• 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 (four wheel drive indicator circuit)
• Underhood fuse- relay center
• Vcm sig
• Vehicle control module (vcm) (left side of engine compt)
• Vss input
• Vss sig out

6.5L

6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Suburban K2500 1998

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Suburban K2500 1998:

• (bottom front of engine, near crank pulley) crankshaft position (ckp) sensor
• (engine harn, 31 cm from taillamp harn breakout)
• (engine harness)
• (i/p harness)
• (i/p harness, approx 16 cm into i/p cluster breakout)
• (right top of cylinder head) g119
• (top of engine,
• (top right front of engine) engine coolant temperature (ect) sensor
• 12v
• 3/2 shift sol
• 4wd signal
• 5 volt ref
• 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 brakes system
• App 1 sig
• App 2 sig
• App 3 sig
• Automatic transmission
• Automatic transmission input shaft speed (a/t iss) sensor (left side of transmission near front)
• B10
• B11
• B12
• Baro sensor input
• Boost pressure sensor
• 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
• Exhaust gas recirculation (egr) control/ barometric (baro) pressure sensor (left side of firewall, near wiper motor)
• Force mtr hi
• Force mtr low
• 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
• Intake man air temp sens
• Map sens input
• Nca
• Near intake manifold) intake air temperature (iat) sensor
• On/off
• Pnk
• Powertrain control module (pcm) (behind right side of dash, near blower motor)
• Pressure control solenoid valve
• Radio
• Range mode sel a
• Range mode sel b
• Range mode sel c
• Red
• Resume
• S140
• S170
• S199
• S211
• S215
• S230
• Sensor gnd
• Set
• Shift sol a
• Shift sol b
• Switch
• Tan
• Timing stepper mtr (high)
• Timing stepper mtr (low)
• Transmission speed input
• Transmission temp input
• Transmission temperature sensor
• Transmissions system
• Vehicle speed input
• Vehicle speed sensor (on transmission, left rear side)
• Vehicle speed sensor buffer (behind right side of dash)
• Vss hi
• Vss output
• Vss rtn
• Vss sig

6.5L (VIN F), Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Suburban K2500 1998

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Suburban K2500 1998:

• (engine harness, approx 4 cm from i/p harness breakout) (a/t) (i/p harn, 20 cm from inflatable restraint i/p module switch breakout) (m/t)
• (engine jumper harness, toward fuel temperature sensor)
• (on inj pump)
• 5 volt ref
• Accelerator pedal position (app) module (part of accelerator pedal)
• Brake switch assembly (at rear of brake pedal support bracket)
• Clutch pedal position (cpp) switch (m/t only) (top of clutch pedal)
• Cmp sig
• D2 trans fuse 20 20a e1
• D8 stop/haz fuse 1 20a c7
• Ecm-1 h7
• Electronic brake control module (on left side of engine compt)
• Engine shutoff solenoid (left front of engine)
• Fuel solenoid (on inj pump, top front of engine)
• Fuel solenoid driver (on inj pump, top front of engine)
• Fuse 20a
• High res sig
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block
• Injection timing stepper motor (top right front of engine)
• M4 brake fuse 18 10a n3
• Nca
• Optical fuel temperature sensor (on fuel inj pump)
• Pnk
• Pnk pnk
• Power distribution system
• Red
• S190
• S198
• S220 (i/p harness, approx 6 cm from steering column breakout)
• S222 (m/t) s152 (a/t)
• S299
• Sens grd
• Tan d
• Underhood fuse-relay center

6.5L (VIN F), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Suburban K2500 1998

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Suburban K2500 1998:

• (engine harness, approx 37 cm from breakout to ebcm) (m/t) (engine harness, approx 31 cm from taillamp harn breakout) (a/t) s100
• (inside left frame rail, below driver's door)
• (right top of cylinder head)
• (right top of cylinder head) g119
• (taillamp extension harness, approx 10 cm from fuel pump balance module breakout)
• Ecm-b fuse 20a
• F11
• Fuel lift pump
• Fuel pump prime connector
• Fuel pump relay (in underhood fuse-relay center)
• Fuel pump/ oil pressure switch and sender (under intake manifold, center of engine)
• G119
• G12
• Gauges fuse 4 10a
• Hot at all times
• Hot in run or start
• I/p fuse block
• Instrument cluster
• Instrument cluster system
• Instrument cluster system (fuel pump balance relay)
• Pnk
• Red
• S101
• S103
• S147
• S213
• S318
• Service engine soon indicator
• Service throttle soon indicator
• Tan
• Underhood fuse-relay center
• Vehicle speed input
• W/dual tanks
• W/o dual tanks
• Wait to start "glow plugs" indicator
• Water in fuel indicator
• Water in-fuel sensor (top center rear of engine)

6.5L (VIN F), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Suburban K2500 1998

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Suburban K2500 1998:

• "serv eng soon" ind
• "serv throttle soon" ind
• (at air intake duct) mass air flow (maf) sensor
• (below dash, near steering column)
• (eng jumper harn, from fuel solenoid driver)
• (engine harness)
• (engine harness, approx 11 cm from i/p harness breakout)
• (engine harness, approx 13 cm into ebcm breakout)
• (right top of cylinder head) g119
• 12v battery (fused)
• 12v battery fused
• 3/2 ctrl out
• A/c enable
• A/c system
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (dlc)
• Egr sol output
• Egr valve sol putput
• Electronic brake brake control module (ebcm) (on left side of engine compt)
• Eng-i k7
• Engine shutoff sol out
• Exhaust gas recirculation (egr) vent solenoid (top left rear of engine)
• Exhaust gas recirculation egr solenoid (top left rear of engine)
• Fuel heater (top rear of engine)
• Fuel sol module (5 vref)
• Fuel sol module feed
• Fuse 20a
• Fusible link
• Fusible links
• G119 (right top of cylinder head)
• 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 output
• Glow plug relay (top left rear of engine)
• Grd
• Ground
• Hot at all times
• Hot in run or start
• Ign
• Ignition
• Maf
• Pcm gnd
• Pnk
• Powertrain control module (pcm) (behind right side of dash, near blower motor)
• Red
• Relay ctrl
• S103
• S108
• S137
• S138
• S147
• S150
• S191
• S269
• Serial data sig
• Shift sol a input
• Shift sol b input
• Signal
• Tan
• Tps 2 ref voltage
• Underhood fuse-relay center
• Wait to start ind
• Wastegate sol
• Wastegate solenoid (top left rear of engine)