GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2001
🢒
Yukon XL - 4WD
🢒
Engine
🢒
Engine Controls - 4.8L, 5.3L, and 6.0L
🢒 Engine Controls Component Views
Figure
1:
Full Engine View Left Side
(1)
Manifold Absolute Pressure (MAP) sensor
(2)
Fuel Pressure Regulator
(3)
Positive Crankcase Ventilation (PCV) Valve
(4)
Left Bank Ignition Coils
(5)
Engine Oil Temperature (EOT) Sensor
(6)
Engine Coolant Temperature (ECT) Sensor
(7)
Throttle Position (TP) Sensor
(8)
Throttle Body
(9)
Idle Air Control (IAC) Motor
(10)
EVAP Purge Valve
Figure
2:
Accelerator Pedal (4.8L/5.3L/6.0L)
(1)
APP Sensor Connector
(2)
APP Sensor
Figure
3:
RF of the Engine Compartment Components (4.8L/5.3L/6.0L)
(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
4:
RR of the Engine Compartment Components (4.8L/5.3L/6.0L)
(1)
AIR Pump
(2)
Vacuum Hose to Air Solenoid
(3)
A/C High Pressure Switch
(4)
A/C Accumulator
(5)
Air Hose to Air Pipes
(6)
AIR Solenoid
(7)
AIR Relay
(8)
AIR Pump Shut Off Valve
(9)
Fender to Cowl Brace
Figure
5:
Top of the Engine Components -- CMP Sensor (4.8L/5.3L/6.0L)
(1)
Camshaft Position (CMP) Sensor
Figure
6:
Lower RR of the Engine Components (4.8L/5.3L/6.0L)
(1)
CKP Mounting Bolt
(2)
CKP Mounting Location
(3)
Crankshaft Position (CKP) Sensor
Figure
7:
Top of the Engine Components -- Fuel Rail (4.8L/5.3L/6.0L)
(1)
Fuel Rail
(2)
Fuel Injector
Figure
8:
LR of the Engine Compartment Components (w/Electronic Throttle Controls)
(1)
Throttle Actuator Control (TAC) Module
(2)
Throttle Actuator Control (TAC) Module Connector
(3)
Junction Block-Underhood
Figure
9:
LR Frame -- Fuel Components (4.8L/5.3L/6.0L)
(1)
Left Frame Rail
(2)
Evaporative Emission (EVAP) Canister Vent Solenoid
(3)
Fuel Tank
(4)
Evaporative Emission (EVAP) Canister Purge Solenoid
Figure
10:
Top of the Engine Components -- EGR (4.8L/5.3L/6.0L)
(1)
AIR System Crossover Pipe
(2)
Left Bank AIR Check Valve
(3)
Left Bank AIR Pipe
(4)
EGR Pipe to Intake Manifold
(5)
Exhaust Gas Recirculation (EGR) Valve
(6)
EGR Pipe from Exhaust Manifold
(7)
Right Bank AIR Pipe
(8)
Right Bank Ignition Coils
(9)
Right Bank AIR Check Valve
Figure
11:
A/C Compressor Clutch, Oil Level Switch, CKP Sensor and Starter
(1)
A/C Compressor Assembly
(1)
A/C Compressor Assembly
(2)
A/C Compressor Clutch Connector
(3)
A/C High Pressure Switch Connector
(3)
A/C High Pressure Switch Connector
(4)
A/C High Pressure Switch
(5)
Oil Level Switch Connector
(6)
Starter Assembly
(7)
Crankshaft Position Sensor (CKP) Connector
(8)
Starter Solenoid Lead
Figure
12:
Top of the Engine -- Ignition Components (4.8L/5.3L/6.0L)
(1)
Knock Sensor (KS) 1
(2)
Knock Sensor (KS) 2
Figure
13:
LF Radiator Support Components (4.3L/4.8L/5.3L/6.0L)
(1)
Powertrain Control Module (PCM)
(2)
Radiator Support
(3)
Left Frame Rail
(4)
PCM Wire Harness Connectors
Figure
14:
Manual Transmission (4.8L/5.3L/6.0L)
(1)
Park/Neutral Position (PNP) Switch Connector
(2)
Vehicle Speed Sensor (VSS)
(3)
Vehicle Speed Sensor (VSS) Connector
(4)
PNP Switch
Figure
15:
Automatic Transmission (4.8L/5.3L/6.0L)
(1)
Transmission Electrical Connector
(2)
Vehicle Speed Sensor (VSS)
(3)
Frame Rail Cross Member
(4)
Heated Oxygen Sensor Bank 1 Sensor 2 Electrical Connector
(5)
Backup Lamp Switch Connector
(6)
Park/Neutral Position (PNP) Switch Connector
(7)
PNP Switch Assembly
(8)
Heated Oxygen Sensor Bank 1 Sensor 1 Electrical Connector
Figure
16:
Automatic Transmission 4L80-E
(1)
Vehicle Speed Sensor
(2)
Harness Connector
(3)
Backup Lamp Switch Connector
(4)
Park/Neutral Position (PNP) Switch Connector
(5)
Input Shaft Speed Sensor Connector
(6)
PNP Switch
Figure
17:
Transfer Case (NVG 261 NP2/NVG 263 NP1)
(1)
Vehicle Speed Sensor (VSS) Adapter
(2)
Transfer Case Shift Control Switch Connector
(3)
VSS Connector
(4)
M Transfer Case
(5)
Harness Brackets
(6)
Left Frame Rail
(7)
Crossmember
(8)
Fuel Line Bracket
Figure
18:
Transfer Case Shift Control Switch
(1)
Transfer Case Shift Control Switch
(2)
Instrument Panel Switch and Deflector Housing
Figure
19:
Oxygen Sensor Identification (4.8L/5.3L/6.0L)
(1)
Delphi Sensor - Case Grounded
(2)
Denso Sensor - Isolated Grounded
Figure
20:
Oxygen Sensors (4.8L and 5.3L)
(1)
Bank 1 Sensor 2 HO2S
(2)
Bank 1 Sensor 1 HO2S
(3)
Bank 1 Sensor 1 HO2S Threaded Boss
(4)
Left Bank Catalytic Convertor
(5)
Bank 1 Sensor 2 HO2S Threaded Boss
(6)
Bank 2 Sensor 1 HO2S Threaded Boss
(7)
Right Side Frame Rail
(8)
Right Bank Catalytic Convertor
(9)
Bank 2 Sensor 2 HO2S Threaded Boss
(10)
Bank 2 Sensor 2 HO2S
(11)
Bank 2 Sensor 1 HO2S
Figure
21:
Oxygen Sensors (6.0L)
(1)
Bank 2 Sensor 1 HO2S
(2)
Bank 1 Sensor 2 HO2S Threaded Boss
(3)
Right Side Frame Rail
(4)
Right Bank Catalytic Convertor
(5)
Bank 2 Sensor 2 HO2S
(6)
Bank 2 Sensor 2 HO2S Threaded Boss
(7)
Left Bank Catalytic Convertor
(8)
Bank 1 Sensor 2 HO2S
(9)
Bank 1 Sensor 1 HO2S Threaded Boss
(10)
Bank 1 Sensor 1 HO2S
(11)
Bank 2 Sensor 1 HO2S Threaded Boss