Power and Grounding Component Views. Chevrolet Avalanche

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2004 🢒 Avalanche - 4WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Power and Grounding Component Views

Figure 1:

Lower LF of the Radiator Support Components


(1)	LH Lower Radiator Support
(2)	Forward Lamp Harness
(3)	Negative Battery Cable (G100)
(4)	Frame
(5)	Ground 100 (G100)

Figure 2:

Fuse Block-Underhood


(1)	Fuse Block-Underhood Bracket
(2)	I/P Harness
(3)	Radiator Support
(4)	Inline Connector C103 or C104-I/P Harness Side
(5)	Inline Connector C103 or C104-Forward Lamp Harness Side
(6)	LH Battery Tray
(7)	Fuse Block-Underhood Bracket
(8)	Fuse Block-Underhood Bracket

Figure 3:

Fuse Block-Underhood Connectors


(1)	Fuse Block-Underhood
(2)	C4 (GRN)
(3)	C3 (RED)
(4)	Fuse Block-Underhood Bracket
(5)	LH Inner Fender (Shield)
(6)	LH Inner Fender
(7)	C1 (LT GRY)
(8)	C2 (BLK)

Figure 4:

Fuse Block-Underhood-C1 (LT GRY) and C6 (BRN)


(1)	Fuse Block-Underhood
(2)	C7 (BLK) Cavity
(3)	Fuse Block-Underhood Bracket
(4)	C6 (BRN)
(5)	I/P Harness
(6)	C1 (LT GRY)

Figure 5:

Fuse Block-Underhood-C2 (BLK) and C5 (BLK)


(1)	C2 (BLK)
(2)	Fuse Block-Underhood
(3)	Fuse Block-Underhood Bracket
(4)	C5 (BLK)
(5)	Engine Harness

Figure 6:

Fuse Block-Underhood-C3 (RED) and C8 (LT GRY)


(1)	C3 (RED)
(2)	Fuse Block-Underhood
(3)	C8 (LT GRY)
(4)	Fuse Block-Underhood Bracket
(5)	Chassis Harness

Figure 7:

Fuse Block-Underhood-C4 and Inlines


(1)	C4 (GRN)
(2)	I/P Inline Connectors
(3)	Fuse Block-Underhood Bracket
(4)	Connector Tether
(5)	I/P Harness Inline Connector
(6)	C103 (I/P Side)
(7)	C103 (FWD Lamp Side)
(8)	Forward Lamp Inline Connector
(9)	Fuse Block-Underhood

Figure 8:

Lower LR of the Engine Components (4.8L/5.3L/6.0L)


(1)	Ground 103 (G103)
(1)	Ground 103 (G103)
(2)	Engine Harness- H02S
(3)	HO2 Sensor connector- Bank 1, Sensor 1
(4)	Fuel Line Bracket
(5)	Ground 104 (G104)
(5)	Ground 104 (G104)
(6)	Oil Pressure Sensor Connector
(6)	Oil Pressure Sensor
(7)	Engine Ground Strap (G107)
(8)	TP 1 Battery Cable (G106)

Figure 9:

G102 (4.8L, 5.3L, and 6.0L)


(1)	Engine Coolant Temperature (ECT) Sensor Connector
(2)	G102
(3)	Negative Battery Cable

Figure 10:

Lower LR of the Engine Components (4.8L/5.3L/6.0L)


(1)	Ground 103 (G103)
(1)	Ground 103 (G103)
(2)	Engine Harness- H02S
(3)	HO2 Sensor connector- Bank 1, Sensor 1
(4)	Fuel Line Bracket
(5)	Ground 104 (G104)
(5)	Ground 104 (G104)
(6)	Oil Pressure Sensor Connector
(6)	Oil Pressure Sensor
(7)	Engine Ground Strap (G107)
(8)	TP 1 Battery Cable (G106)

Figure 11:

G102 - 8.1L


(1)	Engine - 8.1L
(2)	Knock Sensor (KS) - 2
(3)	Knock Sensor (KS) - 2 Connector
(4)	Engine Harness
(5)	G102 - Engine Harness Ground

Figure 12:

G104-8.1L


(1)	Engine-8.1L
(2)	EGR Valve
(3)	Engine Oil Pressure (EOP) Sensor
(4)	Engine Ground Strap
(5)	G104-Engine Harness Ground

Figure 13:

LR of Engine Compartment


(1)	G106
(2)	G107
(3)	Upper Plenum

Figure 14:

LR of the Engine Comparment -- Bulkhead Components


(1)	Windshield Wiper Motor Module Electrical Connector
(2)	Cruise Control Module (CCM) Electrical Connector
(3)	Plenum Panel
(4)	Cruise Control Module (CCM)
(5)	Pass-Through 100 (P100)
(6)	Dash Panel
(7)	Cap For Connector (Without Cruise Control)
(8)	Cruise Control Module (CCM) Electrical Connector
(9)	Harness Pass-Through
(10)	Windshield Wiper Motor Module

Figure 15:

G110 and G302


(1)	Left Front Body Mount
(2)	G110
(3)	G302 (10 Series)

Figure 16:

RH Upper Instrument Panel


(1)	Instrument Panel
(2)	Ground 200 (G200)
(3)	Ground Stud

Figure 17:

Lower RF of the Passenger Compartment


(1)	C222
(2)	C315 (AJ7)
(3)	Body Harness
(4)	C209

Figure 18:

Lower Center of the I/P Components


(1)	Ashtray Lamp Socket
(2)	Bulb
(3)	Ashtray Lamp Shield
(4)	Instrument Panel
(5)	Accessory Power Outlet
(6)	Cigar Lighter Assembly

Figure 19:

Below the Left Side of the I/P, Near the Base of the Steering Column (Escalade ULT)


(1)	C201 I/P Harness to Steering Column Harness
(2)	Fuse Block Heated/Cooled Seats

Figure 20:

Fuse Block- Right I/P


(1)	Fuse Block-Right I/P
(2)	Instrument Panel

Figure 21:

HVAC Module Assembly (Connections)


(1)	Recirculation Actuator Connector
(2)	Instrument Panel
(3)	Electrical Harness Connector
(4)	Ground 200 (G200)
(5)	Blower Motor Resistor Assembly
(6)	Blower Motor Resistor Connector
(7)	Harness Inline Connector (C296)
(8)	Air Temperature Actuator Connector
(9)	Air Temperature Actuator
(10)	Mode Actuator

Figure 22:

I/P Harness Routing - Left Side of I/P Console


(1)	C202 I/P Harness to Brake/Clutch Harness
(2)	C214 I/P Harness to Headliner Harness (w/UE1/U42)
(3)	C214 I/P Harness to Headliner Harness (w/UE1/U42)
(4)	G203 (1851)
(5)	C203 I/P to Left Front Door Harness (w/JF4)
(6)	C221 I/P Harness to Body Harness
(7)	C204 I/P Harness to Body Harness
(8)	Splice Pack SP250 (w/UQ7)
(9)	C201 I/P Harness to Steering Column Harness
(10)	C275 I/P Harness to Inflatable Restraint Steering Wheel Module
(11)	Splice Pack SP205

Figure 23:

Upper Left of the I/P Components


(1)	Splice Pack 203 (SP203)
(2)	Ground 203 (G203)
(3)	Dash
(4)	A-Pillar

Figure 24:

Upper Left of I/P - G203 (w/ULT)


(1)	Upper Dash Support
(2)	G203

Figure 25:

Left Hand Lower Dash


(1)	Fuse Block Connector
(2)	Body Control Module (BCM) Connector
(3)	Splice Pack 205 (SP205)
(4)	Fuse Block
(5)	Data Link Connector (DLC)
(6)	LH IP Courtesy Lamp
(7)	LH IP Courtesy Lamp Socket
(8)	LH IP Support to Dash
(9)	Left Windshield Pillar Trim Panel

Figure 26:

Left Side Frame Rail -- Grounds


(1)	Frame
(2)	Electronic Brake Control Module (EBCM) Ground (GNO)
(3)	Manual Selectable Ride Ground (G302)
(4)	Automatic Transfer Case/ABS Ground (G110)

Figure 27:

Driver Side B-Pillar Wiring


(1)	LH B-Pillar
(2)	G305
(3)	LH Body Harness

Figure 28:

Left Side Frame Rail -- Brake Components


(1)	Ground 302 (G302)
(2)	LH Body Mount
(3)	Ground Screw
(4)	Electronic Brake Control Module (EBCM)
(5)	Fuel Tank

Figure 29:

RH B-Pillar


(1)	Instrument Panel
(2)	C4 (and C3)
(3)	Junction Block-I/P
(4)	RT-B-Pillar
(5)	Ground 306 (G306)
(6)	RH Body Harness
(7)	I/P Harness Inline Connector C208

Figure 30:

G305


(1)	G305
(2)	LH B-Pillar
(3)	C305
(4)	Inflatable Restraint Sensing and Diagnostic Module (SDM)

Figure 31:

G304 and G306


(1)	C396
(2)	G306
(3)	G304
(4)	C399
(5)	RH B-Pillar

Figure 32:

Emergency Light Relay and G305-Utility/Crewcab


(1)	Emergency Roof Lamp Harness
(2)	Roof Beacon Relay
(3)	G305
(4)	B Pillar-LH Side

Figure 33:

Below Front Seats Components (Both w/Power)


(1)	Driver Power Seat Electrical Connector
(2)	Passenger Power Seat Wiring Harness
(3)	Passenger Power Seat Electrical Connector
(4)	Inline Wiring Connector (IP)
(5)	Power Seat Wiring Harness Connector
(6)	Ground 304 (G304)

Figure 34:

Fuel Tank and Sensor (Typical)


(1)	Fuel Sender
(2)	Ground 403 (G403)
(3)	Fuel Filler Ground 302 (G-403)
(4)	LH Frame
(5)	Fuel Sender (Typical)

Figure 35:

RR Side of the Passenger Compartment Components (Suburban/Yukon XL w/Auxiliary HVAC -- 2 of 2)


(1)	Inner Body Side Panel
(2)	Splice Pack 410 (SP410)
(3)	Splice Pack 410A (SP410A)
(4)	Blower Motor-Auxiliary
(5)	HVAC Module-Rear Auxiliary
(6)	Air Temperature Sensor-Lower Auxiliary
(7)	Mode Actuator Connector
(8)	Inline Connector 350 (Auxiliary HVAC Harness Side)
(9)	Inline Connector 350 (Headliner Harness Side)
(10)	Inline Connector 397 (Auxiliary HVAC Harness Side)
(11)	Inline Connector 397 (RH Body Harness Side)

Figure 36:

Trailer Receptacle


(1)	Platform Assembly Trailer Weight Distribution Hitch
(1)	Platform Assembly Trailer Weight Distribution Hitch
(2)	Trailer Wiring Receptacle
(3)	Trailer Wiring Receptacle Bracket
(3)	Trailer Wiring Receptacle Bracket

Figure 37:

Trailer Wiring Harness


(1)	Trailer Wiring Connector
(2)	Trailer Wiring Receptacle
(3)	Frame
(4)	Trailer Hitch Receiver

Figure 38:

Rear Frame -- Rear Lamp Components


(1)	Rear Lamp Bussing Block Bracket
(2)	Rear Lamp Bussing Block
(3)	Rear Cross Sill
(4)	Rear Lamps Bussing Block Electrical Connector

Figure 39:

LR Frame -- Camper Provision


(1)	Camper Wiring Harness
(2)	Frame
(3)	Camper Wiring Harness Connector