GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E/4L70-E 🢒 Engine Electrical Component Views
Figure 1:

Left Front Corner of the Engine Compartment (20/30 Series and HP2)
Object Number: 1454669 Size: LF
(1)Junction Block - Underhood
(2)Battery - Left
Figure 2:

Left Front Corner of Engine Compartment - 10 Series Except HP2
Object Number: 1539373 Size: MF
(1)Battery - Left
(2)Negative Battery Cable
(3)Generator Battery Control Module
Figure 3:

Right Side of Engine Compartment
Object Number: 1554342 Size: MF
(1)Auxiliary Battery Relay (TP2)
(2)A/C Accumulator
(3)A/C Low Pressure Switch
(4)Inner Wheel Well
(5)Coolant Level Switch Connector Diesel and 8.1L
(6)Mass Air Flow (MAF) Sensor
(7)Air Cleaner Assembly
(8)Engine Coolant Recovery Reservoir
(9)Auxiliary Battery Relay Electrical Connector (TP2)
(10)Battery Right (TP2)
Figure 4:

Starter - Gas Except HP2
Object Number: 1454470 Size: MF
(1)Starter Solenoid
(2)Starter
Figure 5:

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 6:

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 7:

Generator - Gas Except 4.3L or HP2
Object Number: 349757 Size: MF
(1)Generator
(2)Battery Cable Junction Block
(3)Battery Cable Bracket
Figure 8:

Generators - Diesel
Object Number: 741105 Size: MF
(1)Generator - Right
(2)Engine
(3)Generator - Left - K65 or 8X5
Figure 9:

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 10:

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 11:

Hood Ajar Switch and Starter/Generator Control Module Coolant Pump (HP2)
Object Number: 1673821 Size: LF
(1)Starter/Generator Control Module Coolant Pump
(2)Hood Ajar Switch
(3)Forward Lamp Harness
Figure 12:

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