Power and Grounding Component Views. Chevrolet Avalanche

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2002 🢒 Avalanche - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 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:

Auxiliary Battery Relay


(1)	Auxiliary Battery Relay
(2)	A/C Accumulator
(3)	A/C Low Pressure Switch
(4)	Inner Wheel Well
(5)	Engine Coolant Level Switch Connector
(6)	Mass Air Flow (MAF) Sensor
(7)	Air Cleaner Assembly
(8)	Engine Coolant Recovery Reservoir
(9)	Auxiliary Battery Relay Electrical Connector

Figure 3:

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 4:

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 5:

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 6:

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 7:

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 8:

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 9:

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 10:

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


(1)	Engine Harness
(2)	Battery Cable Junction Block Bracket
(3)	LH Rocker Cover
(4)	Ground 105 (G105)
(5)	Negative Battery Cable
(6)	Engine Coolant Temperature (ECT) Sensor Connector

Figure 11:

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 12:

G105 - 8.1L


(1)	Engine - 8.1L
(2)	Knock Sensor (KS) - 2
(3)	Knock Sensor (KS) - 2 Connector
(4)	Engine Harness
(5)	G105 - Engine Harness Ground

Figure 13:

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 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:

Transfer Case Harness Routing (1500 Series)


(1)	Vent Tube
(2)	Vent Tube Connection
(3)	Front Axle Actuator
(4)	Front Axle Actuator Connector
(5)	Front Drive Axle Assembly (Mount)
(6)	Ground 110 (G110)
(7)	Left Inner Fender

Figure 16:

Transfer Case Harness Routing (2500 Series)


(1)	Ground 110 (G110)
(2)	Vent Tube
(3)	Vent Tube Connection
(4)	Front Axle Actuator
(5)	Front Axle Actuator Connector
(6)	Left Inner Fender

Figure 17:

Instrument Panel Harness Routing View


(1)	Instrument Panel
(2)	Instrument Panel Cluster Connector
(3)	Sunload Sensor
(4)	Radio Connectors
(5)	Daytime Running Lamps (DRL) Sensor
(6)	Air Temperature Sensor - Upper
(7)	Passenger Inflatable Restraint Module Connector
(8)	Inflatable Restraint Module Switch Connector
(9)	Inline Connector C206 -HVAC Auto A/C
(10)	Inline Connector C207 (RTD)
(11)	Speaker Connector
(12)	Compartment Lamp Connector
(13)	Fuse Block-Right I/P
(14)	Inline Connector to RH Door Harness
(15)	Inline Connector to RH Body Harness (06 only)
(16)	Ashtray Lamp Connector
(17)	HVAC Control Module Connectors
(18)	Cigarette Lighter Connector
(19)	Power Accessary Connectors
(20)	Inline Connector C352 (LH Body Harness Side)
(21)	Console Connector (Y91 only)
(22)	Steering Column Connector
(23)	Inline Connector C307 (Console Extension Harness Side)
(24)	Body Control Module Connectors
(25)	Cargo/Fog Switch Connector
(26)	Headlamp Switch Connector
(27)	Steering Column (SIR) Connector
(28)	Fuse Block-Left I/P
(29)	Data Link Communication Connector
(30)	Inflatable Restraint Sensing And Diagnostic Module (SDM) Connector
(31)	Inline Connector C204
(32)	Inline Connector C200 -LH Door Harness
(33)	Courtesy Lamp - Left
(34)	Relay Block-Body
(35)	Splice Pack 203 (SP203)
(36)	Inline Connectors to Automatic Transfer Case -C151and C153
(37)	Inline Connector C102 -I/P to Chassis Harness
(38)	Inline Connector C103 -I/P to Forward Lamp Harness
(39)	Fuse Block-Underhood
(40)	Instrument Panel Battery Feed Connectors
(41)	Trailer Power Feed Connector
(42)	Cruise Control/Throttle Actuator Connector
(43)	Underhood Lamp Connector
(44)	Speaker - Left Connector
(45)	Inline Connector C204 -I/P to LH Body Harness
(46)	Underhood Lamp Ground
(47)	I/P Harness to Plenum Ground
(48)	Windshield Wiper System Module Connector

Figure 18:

RH Upper Instrument Panel


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

Figure 19:

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 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:

Upper Left of the I/P Components


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

Figure 23:

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 24:

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 25:

Driver Side B-Pillar Wiring


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

Figure 26:

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 27:

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 28:

Below Driver Seat Components (Driver Power Only)


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

Figure 29:

Emergency Light Relay and G305-Utility/Crewcab


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

Figure 30:

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 31:

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 32:

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 33:

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 34:

Trailer Wiring Harness


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

Figure 35:

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 36:

LR Frame -- Camper Provision


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