BUZZERS, RELAYS & TIMERS
| Component | Location |
|---|---|
| A/C COMP Relay | In underhood fuse block. |
| Auxiliary Battery Relay | At right rear of engine compartment. (Схема №9) |
| DEFOG RELAY | In I/P relay block. |
| DRL Relay | In underhood fuse block. |
| DRIVER UNLOCK Relay | In left I/P fuse block. |
| Engine Glow Plug Relay (6.6L VIN 1) | At left rear of engine. (Схема №11) |
| FOG LP Fuse | In underhood fuse block. |
| F/PMP Relay | In underhood fuse block. |
| Fuel Pump Relay (Secondary) | On underhood fuse block bracket. |
| HDLP-HI Relay | In underhood fuse block. |
| HDLP-LOW Relay | In underhood fuse block. |
| HORN Relay | In underhood fuse block. |
| IGN 1 Relay | In underhood fuse block. |
| LOCK Relay | In left I/P fuse block. |
| PARK LP Relay | In underhood fuse block. |
| Power Take-Off Relay | On underhood fuse block bracket. |
| Roof Beacon Relay | At lower left "B" pillar. |
| STARTER Relay | In underhood fuse block. |
| UNLOCK Relay | In left I/P fuse block. |
| W/S WASH Relay | In underhood fuse block. |
BUZZERS, RELAYS & TIMERS LOCATION
CIRCUIT PROTECTION DEVICES
| Component | Location |
|---|---|
| I/P Relay Block | Below left side of dash, left of steering column. |
| Left I/P Fuse Block | On lower left side of dash. |
| Right I/P Fuse Block | On lower right side of dash. |
| Underhood Fuse Block | At left side of engine compartment, near battery. |
CIRCUIT PROTECTION DEVICES LOCATION
CONTROL UNITS
| Component | Location |
|---|---|
| Blower Motor Control Processor | Behind right side of dash, on HVAC assembly. |
| Body Control Module | On lower left side of dash, below steering column. |
| Cruise Control Module | In left rear of engine compartment, on firewall. |
| Driver Door Module | Behind driver's door trim panel, below switch assembly. |
| Electronic Brake Control Module | On left side of inner frame. |
| Engine Control Module (6.6L VIN 1) | At left front of engine compartment. |
| Front Passenger Door Module | Behind front passenger's door trim panel, below switch assembly. |
| Fuel Injector Control Module (6.6L VIN 1) | Under engine air intake duct. |
| HVAC Control Module | Behind center of dash. |
| Ignition Control Module (4.3L VIN W) | At right rear of engine, near ground strap. |
| Inflatable Restraint I/P Module | Behind right side of dash. |
| Inflatable Restraint Sensing/Diagnostic Module | Under left front seat. |
| Memory Seat Module | Underside of left front seat. |
| Powertrain Control Module (PCM) | On left front of engine compartment. (Схема №10) |
| Rear Wheel Steering Control Module | At left rear of vehicle, near spare tire bracket. |
| Throttle Actuator Control Module (Except 4.3L) | At left rear of engine compartment. |
| Transfer Case Shift Control Module | Behind headlamp switch. |
| Transmission Control Module | At left front of engine compartment. |
| Vehicle Communication Interface Module | Behind passenger air bag module. |
| Windshield Wiper Motor Module | Under windshield cowl, between wiper arms. |
CONTROL UNITS LOCATION
MOTORS
| Component | Location |
|---|---|
| Air Temperature Actuator (Left) | At bottom center of HVAC control assembly. |
| Air Temperature Actuator (Right) | At top center of HVAC control assembly. |
| Front Axle Actuator | On right side of center, on axle housing. |
| Fuel Pump (6.6L VIN 1) | In left side frame rail. |
| Fuel Pump & Sender Assembly (Primary) (Gas engines) | In primary fuel tank. |
| Fuel Pump & Sender Assembly (Secondary) (Gas engines) | In secondary fuel tank. |
| Fuel Transfer Pump (6.6L VIN 1) | In rear fuel tank. |
| Mode Actuator | On left side of HVAC module. |
| Recirculation Actuator | On top center of HVAC module. |
| Supplemental Brake Assist Pump Motor | Mounted to power brake booster. |
| Windshield Washer Fluid Pump | In washer fluid reservoir. |
MOTORS LOCATION
SENDING UNITS & SENSORS
| Component | Location |
|---|---|
| A/C Refrigerant Pressure Sensor | In air conditioning muffler hose assembly. |
| Accelerator Pedal Position Sensor (Except 4.3L) | Driver's floor board, behind accelerator pedal. |
| Air Temperature Sensor Assembly (Inside) | In headliner, above driver. |
| Air Temperature Sensor (Lower Left) | In lower left floor duct assembly. |
| Air Temperature Sensor (Lower Right) | At bottom center of HVAC box, in floor duct. |
| Air Temperature Sensor (Outside) | At center of core support, behind grille. |
| Air Temperature Sensor (Upper) | Below dash trim panel, in upper duct. |
| Ambient Air Temperature Sensor | In right front bumper filler assembly. |
| Ambient Light Sensor | On top center of dash. |
| Automatic Transmission Fluid Temperature Sensor | In automatic transmission. |
| Automatic Transmission Input Shaft Speed Sensor | In automatic transmission. |
| Automatic Transmission Turbine Speed Sensor | In upper left of transmission. |
| Barometric Pressure Sensor (6.6L VIN 1) | On left side of engine. |
| Boost Sensor (6.6L VIN 1) | On right side of engine, on intake manifold. |
| Camshaft Position Sensor (4.3L VIN W) | In distributor. |
| Camshaft Position Sensor (4.8L VIN V) | On top center rear of engine. |
| Camshaft Position Sensor (5.3L VIN T) | On top center rear of engine. |
| Camshaft Position Sensor (6.0L VIN U) | On top center rear of engine. |
| Camshaft Position Sensor (6.6L VIN 1) | On front of engine, near cooling fan pulley. |
| Camshaft Position Sensor (8.1L VIN G) | On left side of timing cover. |
| Crankshaft Position (CKP) Sensor (4.3L VIN W) | On bottom front of engine, near crank pulley. (Схема №2) |
| Crankshaft Position (CKP) Sensor (4.8L VIN V) | On lower right rear of engine block. (Схема №7) |
| Crankshaft Position (CKP) Sensor (5.3L VIN T) | On lower right rear of engine block. (Схема №7) |
| Crankshaft Position (CKP) Sensor (6.0L VIN U) | On lower right rear of engine block. (Схема №7) |
| Crankshaft Position (CKP) Sensor (6.6L VIN 1) | On right side of engine front cover. |
| Crankshaft Position (CKP) Sensor (8.1L VIN G) | On top left rear of engine block, near bellhousing. (Схема №8) |
| Engine Coolant Temperature (ECT) Sensor (4.3L VIN W) | On rear side of left cylinder head. (Схема №3) |
| Engine Coolant Temperature (ECT) Sensor (4.8L VIN V) | On front side of left cylinder head. (Схема №5) |
| Engine Coolant Temperature (ECT) Sensor (5.3L VIN T) | On front side of left cylinder head. (Схема №5) |
| Engine Coolant Temperature (ECT) Sensor (6.0L VIN U) | On front side of left cylinder head. (Схема №5) |
| Engine Coolant Temperature (ECT) Sensor (6.6L VIN 1) | On top front of engine. (Схема №11) |
| Engine Coolant Temperature Sensor (8.1L VIN G) | At middle of right cylinder head. |
| Engine Oil Pressure (EOP) Sensor (4.8L VIN V) | On top rear of engine. |
| Engine Oil Pressure (EOP) Sensor (5.3L VIN T) | On top rear of engine. |
| Engine Oil Pressure (EOP) Sensor (6.0L VIN U) | On top rear of engine. |
| Engine Oil Pressure (EOP) Sensor (8.1L VIN G) | On top rear of engine. (Схема №8) |
| Fuel Composition Sensor | At left side of engine compartment, attached to fuel lines. |
| Fuel Level Sensor (Primary) | In primary fuel tank. |
| Fuel Level Sensor (Secondary) | In secondary fuel tank. |
| Fuel Pump & Sender Assembly (Primary) | In primary fuel tank. |
| Fuel Pump & Sender Assembly (Secondary) | In secondary fuel tank. |
| Fuel Rail Pressure Sensor (6.6L VIN 1) | Under intake manifold shield, on fuel rail. |
| Fuel Tank Pressure Sensor | On fuel tank, integral to fuel pump & sender assembly. |
| Heated Oxygen Sensor Bank No. 1 Sensor No. 1 | In left exhaust pipe, before catalytic converter. |
| Heated Oxygen Sensor Bank No. 1 Sensor No. 2 | In left exhaust pipe, after catalytic converter. |
| Heated Oxygen Sensor Bank No. 2 Sensor No. 1 | In right exhaust pipe, before catalytic converter. |
| Heated Oxygen Sensor Bank No. 2 Sensor No. 2 | In right exhaust pipe, after catalytic converter. |
| Inflatable Restraint Front End Discriminating Sensor (Left) | On left front of vehicle, by core support. |
| Inflatable Restraint Front End Discriminating Sensor (Right) | On right front of vehicle, by core support. |
| Intake Air Temperature (IAT)/Mass Airflow (MAF) Sensor | In air induction tube. (Схема №9) |
| Knock Sensor (KS) (4.3L VIN W) | On rear of engine block. (Схема №1) |
| Knock Sensors (KS) (4.8L VIN V) | In valley, under intake manifold. (Схема №6) |
| Knock Sensors (KS) (5.3L VIN T) | In valley, under intake manifold. (Схема №6) |
| Knock Sensors (KS) (6.0L VIN U) | In valley, under intake manifold. (Схема №6) |
| Knock Sensor Bank No. 1 (8.1L VIN G) | On left side of engine, forward of oil filter. |
| Knock Sensor Bank No. 2 (8.1L VIN G) | On right side of engine, forward of starter. |
| Manifold Absolute Pressure (MAP) Sensor (4.3L VIN W) | On top rear of engine, on intake manifold. (Схема №4) |
| Manifold Absolute Pressure (MAP) Sensor (4.8L VIN V) | On top rear of engine, on intake manifold. (Схема №5) |
| Manifold Absolute Pressure (MAP) Sensor (5.3L VIN T) | On top rear of engine, on intake manifold. (Схема №5) |
| Manifold Absolute Pressure (MAP) Sensor (6.0L VIN U) | On top rear of engine, on intake manifold. (Схема №5) |
| Manifold Absolute Pressure (MAP) Sensor (8.1L VIN G) | On top rear of engine, on intake manifold. |
| Propshaft Speed Sensor (Front) | On left front side of transfer case. |
| Propshaft Speed Sensor (Rear) | On transfer case extension housing. |
| Throttle Position (TP) Sensor (4.3L VIN W) | On throttle body assembly. (Схема №1) |
| Vehicle Speed Sensor (2WD) | On left rear side of transmission. |
| Vehicle Speed Sensor (4WD) | On left side of transfer case. |
| Washer Fluid Level Sensor | In washer fluid reservoir. |
| Water In Fuel Sensor (6.6L VIN 1) | On fuel filter element. |
| Wheel Speed Sensor (Left Front) | On left front wheel hub assembly. |
| Wheel Speed Sensor (Right Front) | On right front wheel hub assembly. |
SENDING UNITS & SENSORS LOCATION
SOLENOIDS & SOLENOID VALVES
| Component | Location |
|---|---|
| Evaporative Emissions (EVAP) Canister Purge Solenoid (4.3L VIN W) | At right side of engine, attached to intake manifold. (Схема №1) |
| Evaporative Emissions (EVAP) Canister Purge Solenoid (4.8L VIN V) | Behind throttle body, near front of engine. (Схема №5) |
| Evaporative Emissions (EVAP) Canister Purge Solenoid (5.3L VIN T) | Behind throttle body, near front of engine. (Схема №5) |
| Evaporative Emissions (EVAP) Canister Purge Solenoid (6.0L VIN U) | Behind throttle body, near front of engine. (Схема №5) |
| Evaporative Emissions (EVAP) Canister Purge Solenoid (8.1L VIN G) | Left side of throttle body, near left of engine. |
| Evaporative Emissions Canister Vent Solenoid | On left frame rail at fuel tank. (Схема №12) |
| Exhaust Gas Recirculation (EGR) Valve (8.1L VIN G) | On top rear center of engine. (Схема №8) |
| Idle Air Control Valve (4.3L VIN W) | Mounted to throttle body. (Схема №1) |
| Pressure Control Solenoid Valve | In automatic transmission. |
| Shock Absorber Solenoid (Left Front) | Part of left front shock. |
| Shock Absorber Solenoid (Left Rear) | Part of left rear shock. |
| Shock Absorber Solenoid (Right Front) | Part of right front shock. |
| Shock Absorber Solenoid (Right Rear) | Part of right rear shock. |
| Torque Converter Clutch Pulse Width Modulation Solenoid Valve | In automatic transmission. |
| Torque Converter Clutch Solenoid Valve | In automatic transmission. |
| Trim Solenoid A | In automatic transmission. |
| Trim Solenoid B | In automatic transmission. |
SOLENOIDS & SOLENOID VALVES LOCATION
SWITCHES
| Component | Location |
|---|---|
| A/C High Pressure Switch (6.6L VIN 1) | On right side of compressor. (Схема №11) |
| A/C Low Pressure Switch | On right side of accumulator. (Схема №9) |
| Automatic Transmission Fluid Pressure Manual Valve Position Switch | In automatic transmission. |
| Back-Up Lamp Switch | On left side of transmission. |
| Brake Fluid Level Switch | On left side of brake fluid reservoir. |
| Brake Pressure Differential Switch | In brake line under master cylinder. |
| Clutch Start Switch | On top of clutch pedal assembly. |
| Coolant Level Switch | In coolant reservoir. |
| Engine Oil Level Switch (Except 6.6L) | On right side of oil pan. |
| Engine Oil Level Switch (6.6L VIN 1) | On left rear of oil pan. |
| Engine Oil Pressure (EOP) Switch (4.3L VIN W) | On top rear of engine. (Схема №1) |
| Park Brake Switch | Part of park brake assembly. |
| Park/Neutral Position Switch | On left side of transmission. |
| Pressure Switch Manifold | In automatic transmission. |
| Stoplamp Switch | On top of brake pedal bracket. |
| Surge Tank Switch (6.6L VIN 1) | On surge tank. |
SWITCHES LOCATION
MISCELLANEOUS
| Component | Location |
|---|---|
| Audio Amplifier | Under rear of center console. |
| Back-Up Alarm | At rear bumper. |
| Cellular & Navigation Antenna | Mounted to roof, near left "A" pillar. |
| Data Link Connector | Under left side of dash, below steering column. |
| Fuel Heater (6.6L VIN 1) | On top of fuel filter element. |
| Ignition Coil (4.3L VIN W) | On top right side of engine. (Схема №1) |
| Ignition Coil (4.8L VIN V) | On top of left & right valve covers. |
| Ignition Coils (5.3L VIN T) | On top of left & right valve covers. |
| Ignition Coils (6.0L VIN U) | On top of left & right valve covers. |
| Ignition Coils (8.1L VIN G) | On top of left & right valve covers. |
| Intake Air Heater (6.6L VIN 1) | Under intake manifold sight shield, inside air intake pipe. |
MISCELLANEOUS LOCATION
CONNECTORS
| Component | Location |
|---|---|
| C100 (Black, 16 Pin) | Under underhood fuse block. |
| C102 (Black, 8 Pin) | Under underhood fuse block. |
| C104 (Black, 12 Pin) | Front side of fuse block. |
| C105 (Black, 10 Pin) | Near underhood fuse block. |
| C107 (6.6L VIN 1) (Black, 38 Pin) | On top of left valve cover. (Схема №11) |
| C108 (6.6L VIN 1) (Black, 24 Pin) | On top of left valve cover. (Схема №11) |
| C109 (Black, 4 Pin) | On top of valve cover. |
| C110 (Black, 4 Pin) | On top of valve cover. |
| C111 (Black, 4 Pin) | On top of valve cover. |
| C112 (Black, 4 Pin) | At left rear of engine compartment. |
| C115 (Black, 24 Pin) | At left rear of engine compartment. |
| C116 (Black, 1 Pin) | Attached to underhood fuse block. |
| C125 (Light Gray, 8 Pin) | On radiator support. |
| C127 (Light Gray, 7 Pin) | On radiator support. |
| C148 (Light Gray, 7 Pin) | On top left side of engine. |
| C149 (Light Gray, 7 Pin) | On top right side of engine. |
| C150 (Black, 4 Pin) | On left inner fender. |
| C151 (Black, 12 Pin) | On left inner fender. |
| C152 (Blue, 12 Pin) | Under underhood fuse block. |
| C153 (Black, 3 Pin) | On left inner fender. |
| C154 (Black, 3 Pin) | On left inner fender. |
| C155 (Black, 10 Pin) | Near left top front of engine. |
| C198 (Black, 1 Pin) | On left inner fender. |
| C201 (Black, 32 Pin) | On steering column. |
| C202 (Black, 12 Pin) | Behind left side of dash. |
| C206 (Light Gray, 22 Pin) | Behind left kick panel. |
| C210 (Black, 2 Pin) | Behind left side of dash. |
| C214 | Behind upper left side of dash. |
| C220 (Gray, 24 Pin) | Behind center of dash. |
| C221 (Yellow, 4 Pin) | Behind left kick panel. |
| C222 (Yellow, 4 Pin) | Behind right kick panel. |
| C223 (Black, 16 Pin) | Behind left kick panel. |
| C230 (Black, 2 Pin) | Behind upper right side of dash. |
| C249 (Black, 4 Pin) | Behind center of dash. |
| C250 (Gray, 6 Pin) | Behind left side of dash. |
| C305 (Black, 16 Pin) | Under left front seat. |
| C306 (Black, 40 Pin) | Under front floor console. |
| C310 (Natural, 17 Pin) | At left "B" pillar. |
| C320 (Light Gray, 13 Pin) | Under left front seat. |
| C321 (24 Pin) | Under left front seat. |
| C322 (Natural, 10 Pin) | Under left front seat. |
| C323 (Black, 6 Pin) | Under left front seat. |
| C324 (Black, 8 Pin) | Under left front seat. |
| C325 (Gray, 6 Pin) | Under left front seat. |
| C326 (Gray, 6 Pin) | Under right front seat. |
| C329 (Gray, 4 Pin) | Under right front seat. |
| C350 (Black, 2 Pin) | At top of transfer case. |
| C388 (Black, 6 Pin) | Under right front seat. |
| C396 (Black, 17 Pin) | At right "B" pillar. |
| C399 (Black, 16 Pin) | Under right front seat. |
| C404 (Black, 2 Pin) | Under rear bumper. |
| C405 (Black, 2 Pin) | Under rear bumper. |
CONNECTORS LOCATION
GROUNDS
| Component | Location |
|---|---|
| G100 | On lower left of radiator core support. |
| G102 (4.3L VIN W) | On lower right front of engine block. |
| G102 (4.8L VIN V) | On left side of engine block. (Схема №5) |
| G102 (5.3L VIN T) | On left side of engine block. (Схема №5) |
| G102 (6.0L VIN U) | On left side of engine block. (Схема №5) |
| G102 (8.1L VIN G) | On left side of engine block. |
| G103 (4.3L VIN W) | On right rear of engine block. (Схема №1) |
| G103 (4.8L VIN V) | On right rear of engine block. |
| G103 (5.3L VIN T) | On right rear of engine block. |
| G103 (6.0L VIN U) | On right rear of engine block. |
| G103 (8.1L VIN G) | On right rear of engine block. |
| G104 (4.3L VIN W) | On left rear of engine block. (Схема №1) |
| G104 (4.8L VIN V) | On left rear of engine block. |
| G104 (5.3L VIN T) | On left rear of engine block. |
| G104 (6.0L VIN U) | On left rear of engine block. |
| G104 (8.1L VIN G) | On left rear of engine block. |
| G105 | On lower right front of engine block. |
| G106 | On right front of engine block. |
| G110 | On left front body mount. |
| G200 | Behind right side of dash, near right "A" pillar. |
| G203 | Behind left side of dash, near left "A" pillar. |
| G302 | On left rear body mount. |
| G304 | Under left front seat. |
| G305 | On left "B" pillar. |
| G306 | On right "B" pillar. |
| G390 | Near "C" pillar. |
| G401 | On spare tire hoist bracket. |
| G403 | On left rear frame body mount bracket. |
| G410 | On right rear inner side body panel. |
GROUNDS LOCATION