GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Left Side of Engine (Diesel)


Object Number: 1870630  Size: LF
(1)Fuel Injector 2
(2)Turbocharger Vane Position Sensor
(3)Fuel Injector 4
(4)Fuel Rail Pressure Sensor
(5)Fuel Injector 6
(6)Fuel Injector 8
(7)Glow Plug 8
(8)Glow Plug 6
(9)Engine Oil Pressure (EOP) Sensor
(10)Engine Oil Level Switch
(11)Glow Plug 4
(12)G106
(13)G102
(14)Glow Plug 2
Figure 2:

Right Side of the Engine (Gas -4.3L)


Object Number: 1714216  Size: LF
(1)Ignition Coil 8
(2)Ignition Coil 6
(3)Ignition Coil 4
(4)Manifold Absolute Pressure (MAP) Sensor
(5)Throttle Body
(6)Ignition Coil 2
(7)Knock Sensor (KS) - 2
(8)Crankshaft Position (CKP) Sensor
(9)Engine Oil Level Switch
(10)Starter
(11)Valve Lifter Oil Manifold (VLOM) Assembly
(12)Engine Oil Pressure Sensor
Figure 3:

Right Side of Engine (Diesel)


Object Number: 1870626  Size: LF
(1)Fuel Injector 7
(2)Fuel Injector 5
(3)Fuel Injector 3
(4)Exhaust Gas Recirculation (EGR) Valve
(5)Fuel Injector 1
(6)Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
(7)Intake Air Valve
(8)Crankshaft Position (CKP) Sensor
(9)Glow Plug 1
(10)G103
(11)G105
(12)Block Heater
(13)Glow Plug 3
(14)Glow Plug 5
(15)Water In Fuel Sensor
(16)Starter
(17)Glow Plug 7
Figure 4:

Rear of the Engine (4.3L)


Object Number: 1887857  Size: LF
(1)Central Sequential Fuel Injection (SFI) Module
(2)Manifold Absolute Pressure (MAP) Sensor
(3)G106
(4)Engine Oil Pressure (EOP) Sensor
(5)Ignition Control Module (ICM)
(6)G107
Figure 5:

Front of the I/P -YE9


Object Number: 1855926  Size: LF
(1)Driver Information Center (DIC) Switch (UK3)
(2)Instrument Panel Cluster (IPC)
(3)Radio
(4)Ambient Light/Sunload Sensor Assembly (CJ2)/Ambient Light Sensor (C67/C42)
(5)HVAC Control Module
(6)Inflatable Restraint I/P Module Disable Switch (C99)
(7)Power Take-Off (PTO) Switch
(8)Auxiliary Power Outlet - Front 2
(9)I/P Multifunction Switch Assembly (JL4/JF4/UD7/XA7)
(10)Auxiliary Power Outlet - Front 1
(11)Transfer Case Shift Control Switch (NQF/NQH)
(12)Trailer Brake Control Panel Switch (JL1)
(13)Headlamp and Panel Dimmer Switch
Figure 6:

Front of the I/P +YE9


Object Number: 1909163  Size: LF
(1)Instrument Panel Cluster (IPC)
(2)Inflatable Restraint Steering Wheel Module
(3)Shift Control Lever
(4)Ambient Light/Sunload Sensor Assembly (CJ2)/Ambient Light Sensor (C67/C42)
(5)Speaker - Center (UQA +Y91)
(6)Radio
(7)Inflatable Restraint I/P Module
(8)I/P Compartment Lamp
(9)HVAC Control Module
(10)Auxiliary Power Outlet - Front 2
(11)I/P Multifunction Switch Assembly (JL4/JF4/UD7/XA7)
(12)Auxiliary Power Outlet - Front 1
(13)Driver Information Center (DIC) Switch (UK3)
(14)Steering Wheel Control Switch Assembly - Right (UK3)
(15)Steering Wheel Control Switch Assembly - Left (K34/KA9)
(16)Trailer Brake Control Panel Switch (JL1)
(17)Headlamp and Panel Dimmer Switch
(18)Dimmer Control
(19)Transfer Case Shift Control Switch (NQF/NQH)
(20)Turn Signal Multifunction Switch
Figure 7:

Chime Module (UL5)


Object Number: 1934340  Size: LF
(1)Chime Module (UL5)
Figure 8:

Near the Fuel Tank


Object Number: 1858047  Size: LF
(1)Fuel Tank Pressure (FTP) Sensor (Gas)
(2)Fuel Tank
(3)Evaporative Emissions (EVAP) Canister
(4)Evaporative Emissions (EVAP) Canister Vent Solenoid Valve (- Diesel)
(5)Electronic Brake Control Module (EBCM) (JL4/JF3/JF7/JH6/JH7)
(6)Fuel Line Pressure Sensor (-LMG/LY6/LC9)
(7)Chassis
(8)Fuel Pump and Sender Assembly - Front (Gas)
Figure 9:

Fuel Tank Components (Gas/LY6)


Object Number: 1934351  Size: LF
(1)Fuel Pump and Sender Assembly - Rear (Gas +LY6)
(2)Fuel Pump and Sender Assembly - Front (Gas)
(3)Fuel Pump (FP) Relay - Secondary (Gas +LY6)
Figure 10:

Fuel Level Sensors (Diesel)


Object Number: 1934346  Size: LF
(1)Fuel Level Sensor - Secondary
(2)Fuel Pump
(3)Fuel Level Sensor - Primary