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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> Electrical >> Wiring Diagrams >> Wiring Systems (Diagnostic Information And Procedures) >> Schematic and Routing Diagrams >> Harness Routing Views

Harness Routing Views

Fig 1: OnStar® Component Locations
GM623162Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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)
Fig 2: LH Front Of Vehicle Harness Routing View
GM310802Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 3: C103 Harness Routing View
GM310806Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 4: C104, C114, C150, C151, C153, C154 & PTO Relay Harness Routing View
GM814636Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 5: C148 & C149 Component View
GM1404000Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C149 Engine Harness to Even Ignition Coil Harness
2 C148 Engine Harness to Odd Ignition Coil Harness
3 Throttle Body
Fig 6: Inline Connectors Under Fuse Block Component View - Underhood
GM413351Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Inline Connector-C102
2 Fuse Block-Underhood Support/Mount
3 Inline Connector-C152
4 Inline Connector-C100
Fig 7: Engine Harness Connectors Harness Routing View - 8.1L
GM656555Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 8: Instrument Cluster & C202 Harness Routing View
GM310124Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 9: Instrument Panel Harness Routing View
GM574009Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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 -C151 and 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
Fig 10: LH Top Of Dash Component View
GM310066Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Splice Pack 203 (SP203)
2 Ground 203 (G203)
3 Dash
4 A-Pillar
Fig 11: Instrument Panel Wiring View (At Steering Column)
GM310109Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 12: HVAC Module Assembly (Connections) Harness Routing View
GM310004Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 13: Headliner Harness To Relay Block - Body Component View
GM623107Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 A-Pillar
2 Headliner Wiring Harness
3 Relay Block-Body
4 Headliner Harness Connector C-6
Fig 14: LH Frame Rail At Body Mount Component View
GM309937Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Ground 302 (G302)
2 LH Body Mount
3 Ground Screw
4 Electronic Brake Control Module (EBCM)
5 Fuel Tank
Fig 15: LH A-Pillar Behind Kick Panel Harness Routing View
GM310055Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C200 -I/P Harness Side
2 C204
3 A-Pillar
4 C200 -Door Harness Side
Fig 16: RH A-Pillar Behind Kick Panel Harness Routing View
GM617242Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 17: Lower RF Of Passenger Compartment Harness Routing View
GM926693Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C222
2 C315 (AJ7)
3 Body Harness
4 C209
Fig 18: Inline Connectors Harness Routing View - C204 & C205
GM623154Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 19: C210 & Relay Block-Body - C4 Harness Routing View
GM814939Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Relay Block-Body
2 Relay Block-Body-C4
3 C210-Roof Beacon Relay Inline
Fig 20: Inline Connectors Harness Routing View - C304, C299
GM656720Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 21: C306 Harness Routing View - Avalanche/Suburban
GM813723Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C306
2 Front Floor Console Extension
3 Speaker - Subwoofer
4 I/P Harness
Fig 22: C327 Harness Routing View
GM814871Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Seat-LR
2 C327-Inline to Rear Seat Harness
3 LH Body Harness
Fig 23: Right Body Harness To Rear Seat Routing View
GM741070Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Rear Seat
2 Rear Seat Harness Connector (Inline C349)
3 Right Body Harness Connector (Inline C349)
4 Right Body Harness
Fig 24: C388 Harness Routing View
GM814876Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Seat-RR
2 C388-Inline to Seat Harness-RR
Fig 25: Rear Audio Console Harness Connectors Routing View
GM623128Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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)
Fig 26: C314 & C341-LH Body Harness To Console Routing View
GM813764Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C341-Avalanche (53 Similar)
2 Left Body Harness
3 C314-Left Body Harness Side-Luxury Utility
4 C314-Console Harness Side-Luxury Utility
Fig 27: Rear Audio Extension Harness Connectors Routing View
GM623121Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 28: Rear HVAC Harness Routing View
GM573929Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 29: Body Harness Routing View - Rear RH
GM574004Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 30: Body Harness Routing View - Rear LH
GM574001Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Body Side Inner Panel
2 Body Harness-LH
3 Speaker- Subwoofer Connector
4 Speaker-LR -D Pillar
Fig 31: C402 Harness Routing View
GM814537Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C402-Chassis Harness Side
2 C402-Tail Lamp Harness Side
Fig 32: Chassis Wiring Harness To Rear Side Rail-LH Routing View
GM615821Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Inline Connector C405 to Tail Lamp Harness
2 Shock Absorber Solenoid Connector-RR
3 Frame
4 Inline Connector C450
5 Chassis Harness
Fig 33: C406 & P475 Harness Routing View - Escalade/Avalanche EXT w/VSES
GM814880Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 P475
2 C406-RH Body Harness Side
3 C406-Tail Lamp Harness Side
4 Junction Block-C3-Rear Lamps
Fig 34: Real Time Damping Connector To Body Wiring Harness Routing View
GM615767Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Inline Connector C450 -Chassis Harness Side
2 Inline Connector C450 -Body Harness Side
3 Frame
Fig 35: Liftgate Wiring Harness To Liftgate Routing View
GM573926Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 36: Rear Lamp Harness To Rear License Plate/Tail Lamp Harness - RH Routing View (LH Similiar)
GM623153Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 37: Junction Block-Rear Lamps Harness Routing View - C1 & C2
GM814544Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C2-Gray
2 Body Panel-RH Side
3 Junction Block-Rear Lamps
4 C1-Blue
Fig 38: Junction Block-Rear Lamps Harness Routing View - C3 & C4
GM814020Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Junction Block-Rear Lamps-Utility
2 C4-Tail Lamp Harness -RH
3 C3-Rear License Lamp Harness-RH
Fig 39: Auxiliary Power Center Harness Routing View - 9L4
GM1410792Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Underhood Fuse Block
2 Battery
3 40A Mega Fuse
4 C117
5 Accessory Jumper Harness
6 C119
7 I/P Carrier
8 Auxiliary Power Harness
9 C216
10 Brake/Clutch Harness
11 Passthrough P101
12 I/P Relay Block
13 Auxiliary Power Fuse/Relay Block
14 Glove Box Opening
15 C5
16 I/P Relay Block
17 C8
Fig 40: Roof Lamp Wiring Provisions Harness Routing View - 5G4
GM1411842Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Blunt Cut Wires for Roof Light
2 Roof Light Switch
3 C250
4 I/P Jumper Harness
5 Roof Light Relay
6 G305
7 C210
8 Relay Block C8
9 Relay Block C9
10 Relay Block - I/P
11 Brake/Clutch Harness
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