GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 Engine Electrical Component Views
Figure 1:

Left Front Corner of the Engine Compartment
Object Number: 1454669 Size: LF
(1)Junction Block - Underhood
(2)Battery - Left
Figure 2:

Right Side of Engine Compartment
Object Number: 1453755 Size: MF
(1)Auxiliary Battery Relay w/TP2
(2)A/C Accumulator
(3)A/C Low Pressure Switch
(4)Inner Wheel Well
(5)Coolant Level Switch Connector 6.6L and 8.1L
(6)Mass Air Flow (MAF) Sensor
(7)Air Cleaner Assembly
(8)Engine Coolant Recovery Reservoir
(9)Auxiliary Battery Relay Electrical Connector w/TP2
Figure 3:

Starter - Gas Except HP2
Object Number: 1454470 Size: MF
(1)Starter Solenoid
(2)Starter
Figure 4:

Starter - Diesel
Object Number: 1372695 Size: LF
(1)Fuel Injector 7
(2)Glow Plug 7
(3)Fuel Injector 5
(4)Glow Plug 5
(5)Fuel Injector 3
(6)Glow Plug 3
(7)Fuel Injector 1
(8)Glow Plug 1
(9)Camshaft Position (CMP) Sensor
(10)Crankshaft Position (CKP) Sensor
(11)Starter
(12)Starter Solenoid
Figure 5:

Generator - 4.3L
Object Number: 405657 Size: MF
(1)Air Cleaner Assembly
(2)Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Assembly
(3)Air Inlet Tube
(4)Generator
Figure 6:

Generator - Gas Except 4.3L or HP2
Object Number: 349757 Size: MF
(1)Generator
(2)Battery Cable Junction Block
(3)Battery Cable Bracket
Figure 7:

Generators - Diesel
Object Number: 741105 Size: MF
(1)Generator - Primary
(2)Engine - 6.6L
(3)Generator - Auxiliary - K65 or 8X5
Figure 8:

Energy Storage Box (HP2)
Object Number: 1395899 Size: LF
(1)Energy Storage Control Module (ESCM)
(2)400A Fuse Holder
(3)Energy Storage Box (ESB) Fan
(4)Battery Cut Off Switch
(5)Voltage Sensor - 1
(6)Temperature Sensor - Battery 1
(7)C340
(8)Battery 1
(9)Voltage Sensor - 2
(10)Temperature Sensor - Battery 2
(11)Battery 2
(12)Current Sensor
(13)Auxiliary Power Outlet
(14)Voltage Sensor - 3
(15)Temperature Sensor - Battery 3
(16)Battery 3
(17)Voltage Sensor - 4
(18)Auxiliary Power Outlet Connector
(19)C341
(20)Service Disconnect Switch
(21)G311
(22)G310
Figure 9:

Battery Cable, 3 - Phase Cable, and Power Steering Pump Harnesses (HP2)
Object Number: 1361152 Size: LF
(1)3-Phase Cable
(2)Power Steering Pump Harness
(3)Auxiliary Battery Cable Jumpstart Lead
(4)Dash Panel
(5)Auxiliary Battery Cable Terminal to Fuse Block - Underhood
(6)Battery Cable Terminal to Fuse Block - Underhood
(7)Positive Battery Cable
(8)Negative Battery Terminal
(9)Power Steering Pump Connector C2
(10)G100
(11)G105
(12)Starter/Generator Rotor
(13)Starter/Generator Stator
(14)Battery Cable Harness
(15)C121
(16)C122
(17)Starter/Generator Control Module
Figure 10:

Left Front of Engine Compartment
Object Number: 1454545 Size: LF
(1)Hybrid Control Module (HCM)