Components

Component Location Connector

4 Wheel Anti-lock Brakes Module On LH front frame rail C144,C145
4 Wheel Anti-lock Brakes Relay Behind center of Instrument Panel (I/P),
on 4 wheel anti-lock brakes relay C232
4R7OW Transmission RH side of transmission C110
A/C Clutch Cycling Pressure Switch RH front of engine compartment C161
A/C Compressor Clutch (4.2L) Left front of engine C143
A/C Compressor Clutch
(4.6L, 5.4L, 6.8L) Lower right front of engine C143
A/C Compressor Clutch (7.3L) Top LH front of engine C167
A/C Compressor Clutch Diode In Take Out (T/O) to A/C compressor clutch *
A/C Illumination Lamp Center of I/P, on A/C illumination lamp C205
A/C Pressure Cut-out Switch Right front of engine compartment C159
Anti-Lock Brake System
Data Link Connector Below LH side of I/P C242
Accelerator Pedal Position Sensor Behind LH side I/P, above accelerator pedal C246
Air Bag Diagnostic Monitor Below RH side of I/P,
on air bag diagnostic monitor C200
Air Bag Bracket Behind RH side of I/P near passenger's
airbag C210
Auxiliary A/C Illumination Middle of rear headliner,
in rear auxiliary blower switch C917
Auxiliary A/C-Heater Blower Switch
(with A/C) Center of I/P above radio C230
Auxiliary Battery RH side of vehicle on frame rail *
Auxiliary Battery Relay Right front of engine compartment,
near battery *
Auxiliary Blower Motor Left rear corner of vehicle, above wheel well C406
Auxiliary Blower Motor Relay Left rear corner of vehicle, above wheel well C403
Auxiliary Blower Resistor Left rear corner of vehicle, above wheel well C405
Auxiliary Heater Blower Switch Center of I/P, above radio C230
Auxiliary High Blower Motor Relay Left rear corner of vehicle, above wheel well C404
Auxiliary Powertrain Control Connector Behind LH side of I/P C249
Barometric Pressure Sensor Below LH side of I/P C248
Blend Door Actuator Behind center of I/P, on A/C-heater plenum C237
Blower Motor RH side of engine compartment C160
Blower Motor Relay LH front of engine compartment,
in engine compartment fuse box *
Blower Motor Resistor RH rear of engine compartment,
in engine compartment fuse box C158
Brake Air Pressure Regulator Valve Left side of engine compartment,
near master cylinder C153
Brake On/Off Switch Behind LH side of I/P, on brake pedal bracket C238
Brake Pressure Switch LH side of engine compartment, bottom
of brake master cylinder C151
Button Contact Attached to rear of right "B" pillar C309
Camshaft Position Sensor Front center of engine C1010
Cargo Lamp Attached to rear headliner C900
Center Airbag Sensor Front center of engine compartment,
behind grille C191
Cigar Lighter Center of I/P, on cigar lighter C218, C257
Clockspring Assembly Top of steering column,
on clockspring assembly C220, C223
Coil Per Plug #1 (5.4L, 6.8L) Right bank of engine, above #1 cylinder C184
Coil Per Plug #2 (5.4L, 6.8L) Right bank of engine, above #2 cylinder C183
Coil Per Plug #3 (5.4L, 6.8L) Right bank of engine, above #3 cylinder C182
Coil Per Plug #4 (5.4L, 6.8L) Right bank of engine, above #4 cylinder C181
Coil Per Plug #5 (5.4L) Left bank of engine, above #5 cylinder C176
Coil Per Plug #5 (6.8L) Right bank of engine, above #5 cylinder C176
Coil Per Plug #6 (5.4L, 6.8L) Left bank of engine, above #6 cylinder C177
Coil Per Plug #7 (5.4L, 6.8L) Left bank of engine, above #7 cylinder C178
Coil Per Plug #8 (5.4L, 6.8L) Left bank of engine, above #8 cylinder C179
Coil Per Plug #9 (6.8L) Left bank of engine, above #9 cylinder C187
Coil Per Plug #10 (6.8L) Left bank of engine, above #10 cylinder C185
Courtesy Lamp Switch In left front door jamb,
on left hand courtesy lamp switch C328
Cylinder Head Temperature Sensor Top front of left cylinder head C172
(4.6L, 5.4L, 6.8L)
Cylinder Identification Sensor (4.2L) Front center of engine C139
Cylinder Identification Sensor
(4.6L, 5.4L) Front of left cylinder head C139
Cylinder Identification Sensor (6.8L) Left front of engine C139
Data Link Connector Below LH side of I/P C241
Daytime Running Lamps Module RH front of engine, near horns C193
Delta Pressure Feedback EGR
Sensor (4.2L) Top right front of engine C118
Delta Pressure Feedback EGR
Sensor (4.6L) Top left rear of engine C118
Delta Pressure Feedback EGR
Sensor (5.4L) Top RH side of engine C118
Delta Pressure Feedback EGR
Sensor (6.8L) Left rear top engine C118
Digital Transmission Range Sensor
(4R7OW) LH side of transmission C115
Digital Transmission Range Sensor
(E4OD) LH side of transmission C115
Dome/Map Switch and Lamp In front headliner C903
Dome Switch/Lamp Middle of rear headliner C904
Driver's Air Bag Top of steering column C255
Driver's Seat Belt Right side of driver's seat C341
Driver's Seat Motor Assembly Underside of driver's seat C338
Driver's Seat Regulator Control Switch On left side of driver's seat C337
Daytime Running Lamps Jumper
(without Daytime Running Lamps) LH front of engine compartment, near horns C193
Dual Brake Warning Diode/Resistor
Assembly Main harness, near T/O to C225
Dual Brake Warning Switch LH side of engine compartment, bottom
of brake master cylinder C149
E4OD Transmission RH side of transmission C114
EGR Solenoid (4.2L) Above center of right valve cover C125
EGR Solenoid (4.6L) Above LH valve cover, on bracket C125
EGR Solenoid (5.4L) Above left rear of engine, on bracket C125
EGR Solenoid (6.8L) Top left rear of engine C125
Electronic Flasher Behind LH side of I/P, on electronic flasher C239
Engine Compartment Battery RH front of engine compartment *
Engine Compartment Fuse Box LH front of engine compartment *
Engine Coolant Temperature (ECT) Sensor
(4.2L) Top front of engine, on heater outlet elbow C142
Engine Coolant Temperature Sender Lower left front of engine C1004
Engine Oil Pressure Switch
(4.2L, 4.6L, 5.4L) Left front of engine, below A/C compressor C138
Engine Oil Pressure Switch (6.8L) Lower left front of engine C138
Engine Oil Pressure Switch (7.3L) Top right center of engine C138
Engine Oil Temperature Sensor Center LH side of engine C1007
Evaporative Emissions Canister
Purge Valve Under LH rear of vehicle C416
Exhaust Back Pressure Sensor Top center of engine C1008
Exhaust Pressure Regulator Top LH rear of engine C1011
Front Blower Switch Center of I/P, above radio C207
Fuel Injector #1
(4.2L, 4.6L, 5.4L, 6.8L) In intake manifold C119
Fuel Injector #2
(4.2L, 4.6L, 5.4L, 6.8L) In intake manifold C122
Fuel Injector #3
(4.2L, 4.6L, 5.4L, 6.8L) In intake manifold C123
Fuel Injector #4
(4.2L, 4.6L, 5.4L, 6.8L) In intake manifold C136
Fuel Injector #5
(4.2L, 4.6L, 5.4L, 6.8L) In intake manifold C135
Fuel Injector #6
(4.2L, 4.6L, 5.4L, 6.8L) In intake manifold C134
Fuel Injector #7
(4.6L, 5.4L, 6.8L) In intake manifold C170
Fuel Injector #8
(4.6L, 5.4L, 6.8L) In intake manifold C171
Fuel Injector #9 In intake manifold C186
Fuel Injector #10 In intake manifold C188
Fuel Injectors/Glow Plugs (#1, #3) Near front of RH side of right valve cover C1000
Fuel Injectors/Glow Plugs (#5, #7) Near rear of RH side of right valve cover C1001
Fuel Injectors/Glow Plugs (#2, #4) Near front of LH side of left valve cover C1002
Fuel Injectors/Glow Plugs (#6, #8) Near rear of LH side of left valve cover C1003
Fuel Line Heater Top center of engine C1018
Fuel Octane Sensor LH rear of engine compartment,
near powertrain control module C152
Fuel Pump Module Below vehicle, in fuel tank C347
Fuel Pump Relay LH front of engine compartment,
in engine compartment fuse box *
Fuel Water Switch Top right center of engine C1999
Function Selector Switch Center of I/P C204
Fuel Tank Pressure Transducer Under center rear of vehicle, near fuel tank C305
Fuse Link A At starter motor relay *
Fuse Link B At starter motor relay *
Fuse Link C At starter motor relay *
Fuse Link D At starter motor relay *
Fuse Link E At starter motor relay *
Generator/Regulator Top RH side of engine C198
Generator/Regulator Top RH side of engine C199
Glow Plug Relay Top RH side of engine *
Heated Oxygen Sensor #11
(4.2L, 4.6L, 5.4L) Lower right rear of engine C127
Heated Oxygen Sensor #11 (6.8L) Right rear of engine C127
Heated Oxygen Sensor #12
(4.2L, 4.6L) Beneath center of vehicle, on right side of
transmission C106
Heated Oxygen Sensor #21 (4.2L, 6.8L) Left rear of engine C128
Heated Oxygen Sensor #21 (4.6L, 5.4L) Lower left rear of engine C128

Heated Oxygen Sensor (HO2S) #22
(4.2L, 4.6L) Beneath center of vehicle, near left rear of
transmission C107
Heated Oxygen Sensor (HO2S) #22
(5.4L, 6.8L) Beneath center of vehicle C105
High Mounted Stop/Cargo Lamp Top rear of vehicle C411
High Pitch Horn Lower right front of engine compartment,
behind grille C192
Horn Relay Left front of engine compartment,
in engine compartment fuse box *
Horn Switch Center of steering wheel *
Idle Air Control Valve (4.2L) RH side of engine, near ignition coil C129
Idle Air Control Valve (4.6L) Rear of engine, near intake C129
Idle Air Control Valve (5.4L, 6.8L) Top center rear of engine, near air intake C129
Idle Validation Switch Below LH side of I/P C247
Ignition Coil (4.2L) Left front of engine C130
Ignition Coil (4.6L) Left front of engine C175
Ignition Coil (4.6L) Right front of engine C169
Ignition Switch Lower RH side of steering column C240
Illuminated Entry Module Behind LH side of I/P C215
In-transit Fuel Pump/Sender Below vehicle, along LH frame rail C344
Inertia Fuel Shutoff Behind RH kick panel C236
Injection Control Pressure Sensor Top of engine C1009
Injection Pressure Regulator Center top of engine C1006
Injector Driver Module Left front side of engine compartment C1157
Inlet Air Control Sensor (4.6L, 5.4L) LH front of engine C173
Instrument Cluster Behind LH side of I/P C224
Instrument Cluster Behind LH side of I/P C225
Instrument Cluster Behind LH side of I/P C226
Instrumentation Engine Coolant
Temperature Sensor (4.2L) RH rear of engine, near fuel injector #6 C137
Instrumentation Engine Coolant
Temperature Sensor (4.6L) Top front center of engine C137
Instrumentation Engine Coolant
Temperature Sensor (5.4L) Top LH side of engine, on lower intake manifold C137
Instrumentation Engine Coolant
Temperature Sensor (6.8L) Upper left front of engine C137
Intake Air Temperature Sensor Center of engine compartment, part of
clean air tube C156
Intake Manifold Runner Position Left rear of intake C133
#1 Sensor
Intake Manifold Runner Position Right rear of intake C132
#2 Sensor
Intake Manifold Runner Control Right rear top of engine C124
I/P Fuse Panel Below left side of I/P, near left kick panel *
Knock Sensor (4.2L) Right rear side of engine C140
Knock Sensor (4.6L, 6.8L) Top right rear side of engine C140
Knock Sensor (5.4L) Top right rear of engine C140
Left Front Courtesy Lamp In lower rear of left front door C503
Left Front Door Lock Motor Rear of left front door C501
Left Front Door Speaker Top right corner of LH door C504
Left Front Park/Turn Lamp LH front of vehicle C190
Left Front Wheel Sensor Behind LH front wheel C102
Left Power Mirror Front of left front door C507
Left Stop/Park/Turn Lamp LH rear of vehicle C410
LH Aero Headlamp LH front of vehicle C189
LH Backup Lamp LH rear of vehicle C409
LH Courtesy Lamp Switch Mounted in LH door jamb C328
LH Door Handle Switch Top left corner of LH door C506
LH Headlamp LH front of vehicle C196
LH Mid Speaker Behind LH "B pillar C332
LH Power Window Motor Lower center of left front door C502
LH Rear Speaker Mounted on LH rear door panel C413
LH Visor Lamp LH side of front headliner C921
License Lamp In right rear door C408
Low Vacuum Warning Switch Left front of engine compartment C164
Main Light Switch LH side of I/P C227
Manifold Absolute Pressure Sensor Right side of engine compartment C1155
Mass Air Flow Sensor Center of engine compartment C155
Master Window/Door Lock Control Switch Mounted on LH door panel C500
Memory Lock Module Behind LH "B" pillar C330
Misfire Sensor (4.2L, 4.6L, 6.8L) Lower right front of engine C141
Misfire Sensor (5.4L) Lower center front of engine C141
Modified Vehicle Power (C148) Left rear corner of engine compartment C148
Modified Vehicle Power (C233) Behind LH side of I/P C233
Modified Vehicle Power (C331) At base of LH "B" pillar C331
Multi-function Switch Top side of steering column C250
Multi-function Switch Top side of steering column C251
Output Shaft Speed Sensor Under vehicle, on left side of transmission C109
Overdrive Cancel Switch RH side of steering column C222
Parking Brake Switch Near LH kick panel C243
Passenger's Air Bag Behind RH side of I/P C209
Passenger's Seat Belt On left side of front passenger seat C342
Powertrain Control Module Power Relay LH front of engine compartment,
in engine compartment fuse box *
Plugged Fuel Filter Vacuum Switch Top RH side of engine C1997
Power Mirror Switch (without Door Trim) Center of driver's door C508
Power Mirror Switch (with Door Trim) Center of driver's door C505
Power Plug Behind center I/P, near cigar lighter C219
Powertrain Control Module Left rear of engine compartment, near
brake master cylinder C154
Rear Anti-lock Brake System
Diagnostic Connector Below RH side of I/P C208
Radio Center of I/P C212,C213
Radio Center of I/P C231
Radio Capacitor #1 (4.2L) Top side of engine, attached to ignition coil C131
Radio Capacitor #1 (4.6L) Right front of engine, attached to ignition coil C131
Radio Capacitor #2 (4.6L) LH side of engine, attached to ignition coil C174
Radio Capacitor #1 (5.4L) Upper left rear of engine C131
Radio Capacitor #2 (5.4L) Right rear of engine C174
Radio Capacitor #1 (6.8L) Upper left rear of engine C131
Radio Capacitor #2 (6.8L) Upper RH rear of engine C174
Rear Anti-lock Brake System
Module Behind center side of I/P C217
Rear Anti-lock Brake Air Pressure
Regulator Valve Lower left of engine compartment C153
Rear Auxiliary Blower Switch Middle of rear headliner C916
Rear Axle Speed Sensor Below rear of vehicle, mounted on
differential C415
Rear Courtesy Lamp Switch In RH rear door jamb C414
Rear Dome/Map Switch and Lamp In rear of rear headliner C901
Rear Door Lock Motor In RH rear door, above license plate C423
Remote Keyless Entry Module Behind LH "B" pillar C335, C336
Remote Radio Control Behind LH "B" pillar C333
RH Aero Headlamp RH front of vehicle C195
RH Backup Lamp RH rear of vehicle C400
RH Courtesy Lamp Switch In RH door jamb C327
RH Door Handle Switch Top rear of right front door C605
RH Headlamp RH front of vehicle C197
RH Power Door Lock/Window Switch Center of right front door C600
RH Power Window Motor Lower center of right front door C601
RH Rear Speaker Mounted in RH rear door C421
RH Side Door Speaker Front center of side door C311
RH Visor Lamp RH side of front headliner C922
Right Front Courtesy Lamp In lower rear of right front door C603
Right Front Door Lock Motor Top rear of right front door C602
Right Front Door Speaker In front center of right front door C604
Right Front Park/turn Lamp RH front of vehicle C194
Right Front Wheel Sensor Near right front wheel C103
Right Power Mirror Front of right front door C606
Right Stop/Park/Turn Lamp RH rear of vehicle C401
Remote Keyless Entry
Data Link Connector Behind LH side of I/P C245
Shift Lock Actuator Below RH side of steering column C221
Side Door Courtesy Lamp Switch Behind RH "B" pillar in door jamb C308
Side Door Courtesy Lamp Switch Behind RH "B" pillar in door jamb C312
Side Door Lock Motor Mounted in side door C315
Speed Control Servo/Amplifier Assembly LH side of engine compartment, near
brake master cylinder C146
Speed Control Switch Assembly Top of steering column C253
Starter Motor Lower RH side of engine *
Starter Motor Relay RH front corner of engine compartment,
near battery *
Temperature Control Switch Center of I/P C206
Throttle Position Sensor
(4.2L, 4.6L, 5.4L, 6.8L) Top of engine, near air intake C117
Trailer Backup Lamp Relay LH front of engine compartment,
in engine compartment fuse box *
Trailer Battery Charge Relay LH front of engine compartment,
in engine compartment fuse box *
Trailer Running Lamp Relay LH front of engine compartment,
in engine compartment fuse box *
Trailer/Camper Adapter Connector
(Class I) Below LH side of rear bumper C422
Trailer/Camper Adapter Connector
(Class II) Below LH side of rear bumper C419
Vapor Management Valve
(4.2L, 4.6L, 5.4L, 6.8L) Center rear of engine compartment C126
Vehicle Speed Sensor Under vehicle, on left side of transmission C108
Warning Buzzer Module Behind center of I/P C214
Washer Pump Attached to washer fluid reservoir
on RH fender apron C157
Water In Fuel Sensor Top left center of engine C1998
Windshield Wiper Motor LH rear of engine compartment, mounted
on top of cowl C147
Wiper Control Module Behind center side of I/P C216