GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 Yukon - 4WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Engine Controls Component Views
Figure 1:

Full Engine View Left Side
Object Number: 774476 Size: LF
(1)Idle Air Control (IAC) Motor
(2)Evaporative Emissions (EVAP) Canister Purge Solenoid
(3)Fuel Injector 1
(4)Fuel Injector 3
(5)Fuel Injector 5
(6)Manifold Absolute Pressure (MAP) Sensor
(7)Fuel Injector 7
(8)Positive Crankcase Ventilation (PCV) Valve
(9)Ignition Coil 7
(10)Ignition Coil 5
(11)Ignition Coil 3
(12)Ignition Coil 1
(13)Engine Coolant Temperature (ECT) Sensor
(14)Throttle Position (TP) Sensor
(15)Throttle Body
Figure 2:

EGR, TAC Motor and Ignition Coils 2, 4, 6, 8
Object Number: 774471 Size: LF
(1)Fuel Injector 2 Connector
(2)Throttle Actuator Control (TAC) Motor Connector
(3)Throttle Actuator Control (TAC) Motor
(4)Exhaust Gas Recirculation (EGR) Valve Connector
(5)Exhaust Gas Recirculation (EGR) Valve
(6)Fuel Injector 6
(7)Ignition Coil 2
(8)Ignition Coil 4
(9)Fuel Injector 6
(10)Ignition Coil 6
(11)Fuel Injector 8
(12)Ignition Coil 8
Figure 3:

A/C Compressor Clutch, Oil Level Switch, CKP Sensor and Starter
Object Number: 310258 Size: LF
(1)A/C Compressor Assembly
(2)A/C Compressor Clutch Connector
(3)A/C High Pressure Switch Connector
(4)A/C High Pressure Switch
(5)Oil Level Switch Connector
(6)Starter
(7)Crankshaft Position Sensor (CKP) Connector
(8)Starter Solenoid Lead
Figure 4:

Engine Oil Pressure (EOP) Sensor and CMP Sensor
Object Number: 774474 Size: LF
(1)Engine Oil Pressure (EOP) Sensor
(2)Camshaft Position (CMP) Sensor
(3)Camshaft Position (CMP) Sensor Connector
Figure 5:

Knock Sensors
Object Number: 198593 Size: MF
(1)Knock Sensor (KS) 1
(2)Knock Sensor (KS) 2
Figure 6:

Lower RR of the Engine Components (4.8L/5.3L/6.0L)
Object Number: 222858 Size: MF
(1)CKP Mounting Bolt
(2)CKP Mounting Location
(3)Crankshaft Position (CKP) Sensor
Figure 7:

Air Induction Components
Object Number: 350034 Size: MF
(1)Clamp
(2)Air Duct
(3)Clamp
(4)Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor
(5)Air Cleaner Assembly
(6)Air Restriction Indicator
Figure 8:

Throttle Actuator Control (TAC) Module
Object Number: 750162 Size: LF
(1)Throttle Actuator Control (TAC) Module
(2)Throttle Actuator Control (TAC) Connector
(3)Fuse Block - Underhood
Figure 9:

Fuel Pump Relay - Secondary - w/Dual Tanks
Object Number: 750178 Size: LF
(1)Fuel Pump Relay - Secondary
Figure 10:

Chassis Mounted Fuel/EVAP Controls - 10 Series
Object Number: 1606459 Size: LF
(1)Fuel Pump and Sender Assembly
(2)Evaporative Emissions (EVAP) Canister Vent Solenoid
Figure 11:

Chassis Mounted Fuel/EVAP Controls - 20 Series
Object Number: 1606460 Size: LF
(1)Fuel Pump and Sender Assembly
(2)Evaporative Emissions (EVAP) Canister Vent Solenoid
Figure 12:

Fuel Pump and Sender Assembly Components
Object Number: 830794 Size: MF
(1)Fuel Pump and Sender Assembly
(2)Fuel Tank Pressure (FTP) Sensor
(3)Fuel Level Sensor
Figure 13:

Fuel Composition Sensor - w/L59 Only
Object Number: 830773 Size: MF
(1)Fuel Composition Sensor
Figure 14:

Heated Oxygen Sensor (HO2S) 4.8L and 5.3L
Object Number: 334918 Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
(2)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
(3)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Threaded Boss
(4)Left Bank Catalytic Convertor
(5)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Threaded Boss
(6)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Threaded Boss
(7)Right Side Frame Rail
(8)Right Bank Catalytic Convertor
(9)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Threaded Boss
(10)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
(11)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Figure 15:

Heated Oxygen Sensors (HO2S) 6.0L
Object Number: 349194 Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
(2)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Threaded Boss
(3)Right Side Frame Rail
(4)Right Bank Catalytic Convertor
(5)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
(6)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Threaded Boss
(7)Left Bank Catalytic Convertor
(8)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
(9)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Threaded Boss
(10)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
(11)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Threaded Boss
Figure 16:

Heated Oxygen Sensor Identification
Object Number: 718233 Size: MF
(1)Case Grounded Sensor
(2)Isolated Grounded Sensor
Figure 17:

PCM Location
Object Number: 310796 Size: MF
(1)Powertrain Control Module (PCM)
(2)Radiator Support
(3)Left Frame Rail
(4)PCM Wire Harness Connectors
Figure 18:

Throttle Actuator Control (TAC) Module
Object Number: 750162 Size: LF
(1)Throttle Actuator Control (TAC) Module
(2)Throttle Actuator Control (TAC) Connector
(3)Fuse Block - Underhood
Figure 19:

Accelerator Pedal Position (APP) Sensor Connector
Object Number: 751380 Size: MF
(1)Accelerator Pedal Position (APP) Sensor Connector
(2)Accelerator Pedal Position (APP) Sensor