GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls - 6.6L (LB7) 🢒 Engine Controls Component Views
Figure 1:

Accelerator Pedal
Object Number: 1155067 Size: LF
(1)Accelerator Pedal Position (APP) Sensor Connector
(2)Accelerator Pedal Position (APP) Sensor
(3)Accelerator Pedal
(4)C201 (48 cavities)
Figure 2:

Back Right of Engine
Object Number: 822098 Size: LF
(1)Engine Harness
(2)Engine Control Module (ECM)
(3)Engine Control Module (ECM) Connector
(4)Transmission Control Module (TCM) Connector
(5)Transmission Control Module (TCM)
Figure 3:

Camshaft Position (CMP) Sensor
Object Number: 765039 Size: MF
(1)Camshaft Sensor
(2)Pulley
Figure 4:

Top Left View Of Engine (LB7/LLY)
Object Number: 1203410 Size: LF
(1)Manifold Absolute Pressure (MAP) Sensor
(2)A/C High Pressure Switch
(3)Fuel Rail Pressure (FRP) Sensor
(4)C119, C118
(5)Glow Plug Relay
(6)Glow Plug Harness
(7)Fuel Temperature Sensor
(8)Engine
(9)Generator Connector
(10)Barometric Pressure (BARO) Sensor
(11)A/C Compressor Clutch Connector
(12)Turbocharger Boost Pressure Sensor
(13)Engine Coolant Temperature (ECT) Sensor
Figure 5:

Crankshaft Position (CKP) Sensor
Object Number: 765041 Size: MF
(1)Crankshaft Position (CKP) Sensor
(2)Timing Chain Cover
Figure 6:

Front of Engine (LB7/LLY)
Object Number: 822096 Size: LF
(1)Generator Ring Terminal
(2)Generator Connector
(3)Generator
(4)Generator Connector
(5)Generator
(6)Engine Harness
(7)Generator Ring Terminal
Figure 7:

Front of Vehicle
Object Number: 826867 Size: LF
(1)Chassis Harness
(2)Vacuum Pump
(3)Coolant Level Switch Connector
(4)Engine Fan Harness
(5)Vacuum Pump Connector
(6)C106
(7)C106
Figure 8:

Air Compressor (K16), Fuel Tanks and Trailer Connector (RQ2 and U86 or RQ3)
Object Number: 1014827 Size: LF
(1)Splice Pack SP400 (Ground Block)
(2)C409 (8 cavities) Fuel Tank Harness to the Chassis Harness
(3)Fuel Pump (FP) Relay
(4)Fuel Sender - Secondary
(5)Fuel Tank Transfer Pump - Secondary
(6)Trailer Connector (RQ2 and U86 or RQ3)
(7)C410 (3 cavities - K16) Chassis Harness to the Air Compressor Harness
(8)Air Compressor Connector (K16)
(9)Air Compressor Relay (K16)
(10)Air Compressor (K16)
(11)Fuel Sender - Primary
Figure 9:

Front View of Engine (LB7/LLY)
Object Number: 656499 Size: MF
(1)AC High Pressure Switch Connector
(2)C108
(3)C107
(4)Engine Glow Plug Relay
(5)Glow Plug Harness
(6)Engine
(7)Generator Connector
(8)AC Compressor Clutch Connector
Figure 10:

Fuel Injector Control Module (FICM)
Object Number: 776372 Size: MF
(1)Fuel Injector Control Module (FICM)
Figure 11:

Injection System Components
Object Number: 798816 Size: MF
(1)Injector 5 Fuel Rail
(2)Injector 7 Fuel Rail
(3)Injectors 5 and 7 Harness
(4)Intake Air Heater
(5)Fuel Pressure Sensor
(6)Injectors 6 and 8 Harness
(7)Injector 8 Fuel Rail
(8)Injector 6 Fuel Rail
(9)Injector 4 Fuel Rail
(10)Injectors 2 and 4 Harness
(11)Injector 2 Fuel Rail
(12)Injectors 1 and 3 Harness
(13)Injector 1 Fuel Rail
(14)Injector 3 Fuel Rail
Figure 12:

Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
Object Number: 765091 Size: MF
(1)Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
(2)Air Cleaner Assembly
Figure 13:

Water in Fuel Sensor
Object Number: 776388 Size: MF
(1)Fuel Filter/Heater Element Housing
(2)Fuel Filter
(3)Water in Fuel Sensor