Harness Routing Views. Chevrolet Avalanche

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2002 🢒 Avalanche - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Harness Routing Views

Figure 1:

OnStar® Component Locations


(1)	Global Positioning Satellite (GPS) Antenna
(2)	Cellular Telephone Microphone
(3)	Global Positioning System (GPS)
(4)	Junction Block-Body
(5)	Vehicle Communication Unit (VCU)
(6)	OnStar® Button Assembly
(7)	Vehicle Interface Unit (VIU)

Figure 2:

LH Front of Vehicle


(1)	Upper Radiator Support -Tie Bar
(2)	Headlamp Assembly-LF
(3)	Headlamp - High Beam - Left Connector
(4)	Daytime Running Lamp (DRL)-Left
(5)	Daytime Running Lamp (DRL)-Left Socket
(6)	Windshield Washer Reservoir
(7)	Park/Turn Signal Lamp Socket-LF
(8)	Marker Lamp Socket-LF
(9)	Marker Lamp-LF
(10)	Park/Turn Signal Lamp-LF
(11)	Snowplow Connector C125-Option
(12)	Headlamp Connector-Low Beam-Left
(13)	Marker Lamp-LF

Figure 3:

C103


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

Figure 4:

C104, C114, C150, C151, C153, C154, and PTO Relay


(1)	Fuse Block - Underhood
(2)	C153 - Engine Harness to Transfer Case Harness
(3)	C150 - Transfer Case Harness to Axle Jumper Harness
(4)	Transfer Case Harness
(5)	C151 - I/P Harness to Automatic Transfer Case Harness (w/NP8/NR4) or C104 - I/P Harness to Forward Lamp Harness (w/o NP8/NR4)
(6)	C154 - I/P Harness to Automatic Transfer Case Harness (w/NP8/NR4) or C114 - Chassis Harness to I/P Harness (w/JL4/NYS)
(7)	Power Take-Off (PTO) Relay

Figure 5:

Inline Connectors Under the Fuse Block-Underhood


(1)	Inline Connector-C102
(2)	Fuse Block-Underhood Support/Mount
(3)	Inline Connector-C152
(4)	Inline Connector-C100

Figure 6:

Engine Harness Connector Locations-8.1L


(1)	MAP Switch Connector
(2)	Surge Tank Switch Connector
(3)	Secondary Air Injection (AIR) Solenoid Relay Connector
(4)	Secondary Air Injection (AIR) Pump Connector
(5)	MAP Sensor Connector
(6)	A/C Compressor Connector
(7)	Engine Wiring Harness Ground
(8)	Oil Pressure Sensor Connector
(9)	Oil Pressure Sensor Connector
(10)	Starter Connector
(11)	Knock Sensor Connector
(12)	Automatic Transmission Input Speed Sensor (ISS) Connector
(13)	Oxygen Sensor Connector
(14)	Turbine Shaft Speed (TSS) Sensor Connector
(15)	Oxygen Sensor Connector
(16)	Power Take Off (PTO) Connector
(17)	Transmission Harness Connector
(18)	Speed Sensor Connector
(19)	Park/Neutral Position (PNP) Switch Connectors
(20)	Oxygen Sensor Connector
(21)	Low Oil Level Sensor Connector
(22)	Crankshaft Position Sensor Connector
(23)	Knock Sensor Connector
(24)	Ignition Coil Connector
(25)	Engine Wiring Harness Ground
(26)	Camshaft Position Sensor Connector
(27)	Powertrain Control Module (PCM) Connectors
(28)	Power Take Off (PTO) Relay Connector
(29)	Inline to IP Harness Connector
(30)	Inline to Chassis Harness Connector
(31)	Junction Block-Underhood
(32)	Transmission Control Module Connectors (M74)
(33)	Throttle Actuator Control (TAC) Module Connector
(34)	Throttle Position (TP) Sensor Connector
(35)	Generator Connector
(36)	Fuel Injector Connector
(37)	Electric Throttle Control Connector

Figure 7:

Instrument Cluster and C202


(1)	Instrument Panel Cluster (IPC)
(2)	Inline Connector C202 M
(3)	Inline Connector C202 F
(4)	Instrument Cluster Electrical Connector
(5)	Instrument Panel Carrier
(6)	Instrument Panel

Figure 8:

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 9:

LH Top of Dash


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

Figure 10:

Instrument Panel Wiring (at Steering Column)


(1)	Inline Connectors (C201A, C201B and C201C)
(2)	Inline Connector C201
(3)	Inflatable Restraint Harness
(4)	Inflatable Restraint Electrical Connector
(5)	Body Control Module (BCM) Bracket
(6)	Body Control Module (BCM) Harness
(7)	A/T Shift Lock Control Solenoid Connector
(8)	A/T Shift Lock Control Solenoid Electrical Connector
(9)	Lower Steering Column Shaft
(10)	Inflatable Restraint Steering Wheel Module Connector with Tether
(11)	Instrument Panel Bracket

Figure 11:

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 12:

Headliner Harness to Relay Block-Body


(1)	A-Pillar
(2)	Headliner Wiring Harness
(3)	Relay Block-Body
(4)	Headliner Harness Connector C-6

Figure 13:

LH Frame Rail at Body Mount


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

Figure 14:

LH A-Pillar Behind Kick Panel


(1)	C200 -I/P Harness Side
(2)	C204
(3)	A-Pillar
(4)	C200 -Door Harness Side

Figure 15:

RH A-Pillar Behind Kick Panel


(1)	Side Cowl Panel
(2)	C299 -Door Harness Side - Uplevel
(3)	C299 -I/P Harness Side - Uplevel
(4)	C208 -Right Body Harness Side
(5)	C208 - I/P Harness Side

Figure 16:

Inline Connectors-C204 and C205


(1)	LH Dash Panel Insulator
(2)	Door Wiring Harness -LH
(3)	Inline Connector C205 -Door Harness Side
(4)	Inline Connector C205 -LH Body Wiring Harness Side
(5)	Inline Connector C204 -LH Body Wiring Harness Side
(6)	Body Wiring Harness-LH
(7)	Inline Connector C204 -I/P Harness Side
(8)	Body Harness-LH

Figure 17:

C210 and Relay Block-Body-C4


(1)	Relay Block-Body
(2)	Relay Block-Body-C4
(3)	C210-Roof Beacon Relay Inline

Figure 18:

Inline Connectors-C304, C299


(1)	Fuse Block-Right I/P
(2)	Fuse Block Right -I/P Connector-C2 -RF Door Harness
(3)	RF Door Harness
(4)	Inline Connector-C304 -Passenger Heated Seat
(5)	Inline Door Harness Connector-C299 -Uplevel Utility

Figure 19:

C306 - Avalanche/Suburban


(1)	C306
(2)	Front Floor Console Extension
(3)	Speaker - Subwoofer
(4)	I/P Harness

Figure 20:

C327


(1)	Seat-LR
(2)	C327-Inline to Rear Seat Harness
(3)	LH Body Harness

Figure 21:

Right Body Harness to Rear Seat Harness


(1)	Rear Seat
(2)	Rear Seat Harness Connector (Inline C349)
(3)	Right Body Harness Connector (Inline C349)
(4)	Right Body Harness

Figure 22:

C388


(1)	Seat-RR
(2)	C388-Inline to Seat Harness-RR

Figure 23:

Rear Audio Console Harness Connectors


(1)	Front Floor Compartment
(2)	I/P Harness
(3)	Inline Connector 307 (Uplevel Utility), Inline 340 (Luxury Utility)
(4)	Inline Connector 307 (Uplevel Utility), Inline 340 (Luxury Utility)
(5)	Console Harness
(6)	Inline Connector 314 (Rear Console Harness Side)
(7)	Inline Connector 314 (LH body Harness Side)

Figure 24:

C314 and C341-LH Body Harness to Console


(1)	C341-Avalanche (53 Similar)
(2)	Left Body Harness
(3)	C314-Left Body Harness Side-Luxury Utility
(4)	C314-Console Harness Side-Luxury Utility

Figure 25:

Rear Audio Extension Harness Connectors


(1)	Instrument Panel
(2)	Radio Connectors
(3)	Console Extension Harness
(4)	Inline Connector 253 (IP Harness Side)
(5)	Inline Connector 253 (Console Extension Harness Side)
(6)	Compact Disc Player Connector
(7)	Front Floor Console Extension
(8)	Instrument Panel Harness
(9)	Radio

Figure 26:

Rear HVAC Harness


(1)	Inner Body Side Panel
(2)	Splice Pack 410 (SP410)
(3)	Splice Pack 410A (SP410A)
(4)	Blower Motor Connector
(5)	HVAC Assembly - Auxiliary
(6)	Air Temperature Sensor-Lower Auxiliary
(7)	Mode Actuator-Auxiliary 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 27:

Body Harness Rear RH


(1)	Back Body Opening Inner Upper Panel
(2)	CHSML Cargo
(3)	Door Lock Switch Rear Cargo
(4)	Splice Pack 410
(5)	Speaker - RR Connector
(6)	Inline to Headliner

Figure 28:

Body Harness Rear LH


(1)	Body Side Inner Panel
(2)	Body Harness-LH
(3)	Speaker- Subwoofer Connector
(4)	Speaker-LR -D Pillar

Figure 29:

C402


(1)	C402-Chassis Harness Side
(2)	C402-Tail Lamp Harness Side

Figure 30:

Chassis Wiring Harness to Rear Side Rail-LH


(1)	Inline Connector C405 to Tail Lamp Harness
(2)	Shock Absorber Solenoid Connector-RR
(3)	Frame
(4)	Inline Connector C450
(5)	Chassis Harness

Figure 31:

C406 and P475-Escalade/Avalanche EXT w/VSES


(1)	P475
(2)	C406-RH Body Harness Side
(3)	C406-Tail Lamp Harness Side
(4)	Junction Block-C3-Rear Lamps

Figure 32:

Real Time Damping Connector to Body Wiring Harness


(1)	Inline Connector C450 -Chassis Harness Side
(2)	Inline Connector C450 -Body Harness Side
(3)	Frame

Figure 33:

Liftgate Wiring Harness to Liftgate


(1)	Liftgate with Liftglass
(2)	Liftglass Defog Connector
(3)	Liftgate Latch Connector
(4)	Liftgate Lower Latch Connector
(5)	Liftgate Latch Connector
(6)	Liftgate Lower Latch Connector
(7)	Liftgate Latch Connector
(8)	Wiper Motor Connector
(9)	Inline Connector C499

Figure 34:

Rear Lamp Harness to Rear License Plate/Tail Lamp Harness-RH (LH Similiar)


(1)	Back Body Opening Lower Frame
(2)	Rear Lamp Wiring Harness
(3)	Inline Connector 403 -Rear Lamp Harness Side
(4)	Inline Connector 403 -Tail Lamp Harness Side
(5)	Inline Connector 404 -Rear Lamp Harness Side
(6)	Inline Connector 404 -Rear License Plate Harness Side
(7)	License Plate Wiring Harness

Figure 35:

Junction Block-Rear Lamps-C1 and C2


(1)	C2-Gray
(2)	Body Panel-RH Side
(3)	Junction Block-Rear Lamps
(4)	C1-Blue

Figure 36:

Junction Block-Rear Lamps-C3 and C4


(1)	Junction Block-Rear Lamps-Utility
(2)	C4-Tail Lamp Harness -RH
(3)	C3-Rear License Lamp Harness-RH