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Harness Routing Views

Fig 1: Forward Lamp Harness Routing
GM1543921Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 1

Callout Component Name
1 Fuse Block - Underhood - Cooling Fan Connector
2 Fuse Block - Underhood Cooling Fan
3 C180
4 Fuse Block - Underhood C4
5 Battery Positive Voltage
6 C104
7 C125
8 S100
9 G100
10 C127
11 S101
12 G115
Fig 2: LR Of the Engine Compartment Component View (9L4)
GM1371094Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 2

Callout Component Name
1 Brake/Clutch Harness
2 C119
3 I/P Harness
4 Engine Harness
5 Fuse Block - Underhood
6 Negative Battery Cable Harness
7 C117
8 Accessory Jumper Harness
9 C160
Fig 3: LR Of Engine Compartment Connector Views (5Y0)
GM1371090Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 3

Callout Component Name
1 Brake/Clutch Harness
2 Fuse Block - Underhood
3 Emergency Vehicle Roof Lamp Relay
4 C160
5 C119
6 C161
7 Chassis Harness
Fig 4: Battery Cable, 3 - Phase Cable, & Power Steering Pump Harnesses Component View (HP2)
GM1361152Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 4

Callout Component Name
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
Fig 5: C100, C102 & C152 Component View
GM413351Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 5

Callout Component Name
1 C102
2 Fuse Block - Underhood Support Mount
3 C152
4 C100
Fig 6: C104, C114, C150, C151, C153, C154, & PTO Relay Component View
GM814636Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 6

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 7: Engine Harness Component View - 4.3L
GM1402445Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 7

Callout Component Name
1 Intake Air Temperature (IAT)/ Mass Air Flow (MAF) Sensor Connector
2 Generator Connector
3 Coolant Level Switch Connector
4 Manifold Absolute Pressure (MAP) Sensor Connector
5 A/C Low Pressure Switch Connector
6 Auxiliary Battery Relay Connector (TP2)
7 S102
8 S103
9 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector
10 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector
11 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector
12 Vehicle Speed Sensor (VSS)
13 Backup Lamp Switch (Manual Trans)
14 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector
15 Camshaft Position (CMP) Sensor Connector
16 Engine Oil Pressure (EOP) Sensor Connector
17 Engine Coolant Temperature (ECT) Sensor Connector
18 Idle Air Control (IAC) Motor Connector
19 S110
20 Throttle Position (TP) Sensor Connector
21 C153
22 C100
23 Fuse Block - Underhood C2
24 C152
25 Powertrain Control Module (PCM) C2
26 Powertrain Control Module (PCM) C1
27 A/C Compressor Clutch Connector
28 A/C Refrigerant Pressure Sensor Connector
Fig 8: Lower Right Side Of The Engine Component View (6.6L)
GM768355Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 8

Callout Component Name
1 Engine - 6.6L Diesel
2 Engine Harness
3 G102
4 Auxiliary Negative Battery Ground
5 Starter Relay Terminal
6 Starter Solenoid
Fig 9: Left Side Of The Engine Component View (4.8, 5.3, & 6.0L)
GM1402455Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 9

Callout Component Name
1 Generator Connector
2 Evaporative Emission (EVAP) Canister Purge Solenoid
3 S104
4 C148
5 Manifold Absolute Pressure (MAP) Sensor Connector
6 Knock Sensor (KS) Connector
7 Knock Sensor (KS) Connector
8 G104
9 Camshaft Position (CMP) Sensor Connector
10 Throttle Actuator Control (TAC) Connector
11 C153
12 G102
13 C100
14 Fuse Block - Underhood C2
15 C152
16 Powertrain Control Module (PCM) C2
17 Powertrain Control Module (PCM) C1
18 S110
19 S103
Fig 10: Right Side Of The Engine Component Views - 4.8, 5.3, And 6.0L
GM1402457Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 10

Callout Component Name
1 Manifold Absolute Pressure (MAP) Sensor Connector
2 S102
3 Auxiliary Battery Relay Connector (TP2)
4 Evaporative Emission (EVAP) Canister Purge Solenoid
5 Throttle Actuator Control (TAC) Connector
6 Coolant Level Switch Connector
7 Intake Air Temperature (IAT)/ Mass Air Flow (MAF) Sensor Connector
8 A/C Refrigerant Pressure Sensor Connector
9 A/C Compressor Clutch Connector
10 A/C Low Pressure Switch Connector
11 Engine Oil Level Switch Connector
12 Camshaft Position (CMP) Sensor Connector
13 Engine Oil Pressure (EOP) Sensor Connector
Fig 11: Rear Of The Engine Component View (4.8, 5.3, & 6.0L)
GM1402460Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 11

Callout Component Name
1 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector (Automatic)
2 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector (Automatic)
3 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector (Manual)
4 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector (Manual)
5 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector (Manual)
6 Vehicle Speed Sensor (VSS) Connector
7 Backup Lamp Switch Connector
8 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector (Manual)
9 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector (Automatic)
10 Park/Neutral Position Switch Connector
11 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector (Automatic)
Fig 12: Left Side Of The Engine Component View (LLY)
GM1402728Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 12

Callout Component Name
1 A/C Compressor Clutch Connector
2 A/C Refrigerant Pressure Sensor Connector
3 Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor Connector
4 Generator - Left Connector
5 Coolant Level Switch
6 C108
7 A/C Low Pressure Switch Connector
8 S118
9 C107
10 Throttle Actuator Control (TAC) Module Connector
11 Backup Lamp Switch Connector
12 Vehicle Speed Sensor (VSS) Connector
13 S127
14 C100
15 Fuse Block - Underhood C2
16 G104
17 C152
18 Engine Control Module (ECM) C1 Connector
19 Engine Control Module (ECM) C2 Connector
20 Engine Control Module (ECM) C3 Connector
21 S164
22 S102
23 S148
24 S147
25 S119
26 Generator - Right Connector
Fig 13: Right Side of the Engine Component View (LLY)
GM1402731Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 13

Callout Component Name
1 S127
2 Throttle Actuator Control (TAC) Module Connector
3 C108
4 C107
5 C153
6 C100
7 Fuse Block - Underhood C2
8 C152
9 Glow Plug Controller Power
10 Generator - Right Connector
11 S141
12 A/C Refrigerant Pressure Sensor Connector
13 Engine Control Module (ECM) C3 Connector
14 Engine Control Module (ECM) C2 Connector
15 Engine Control Module (ECM) C1 Connector
16 A/C Compressor Clutch Connector
17 Generator - Left Connector
18 Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor Connector
19 G102
20 Coolant Level Switch Connector
21 A/C Low Pressure Switch Connector
Fig 14: Left Side of the Engine Component View (8.1L)
GM1398839Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 14

Callout Component Name
1 S163 (PTO)
2 S132
3 S164 (PTO)
4 S102
5 S151
6 S103
7 C155
8 Fuse Block - Underhood C2
9 PTO Relay Connector
10 S104
11 Throttle Actuator Control (TAC) Module C1
12 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
13 Knock Sensor (KS) - Bank 1
14 C100
15 C152
16 C106 (PTO)
17 S165 (M74)
18 S110
19 G102
20 Powertrain Control Module (PCM) C2
21 Powertrain Control Module (PCM) C1
22 Transmission Control Module (TCM) C1
23 Transmission Control Module (TCM) C2
Fig 15: Right Side Of The Engine Component Views - 8.1L
GM1398841Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 15

Callout Component Name
1 Auxiliary Battery Relay Connector (TP2)
2 A/C Low Pressure Switch Connector
3 Manifold Absolute Pressure (MAP) Sensor
4 Engine Coolant Temperature (ECT) Sensor
5 C149
6 S157
7 Coolant Level Switch Connector
8 S160
9 Throttle Actuator Control (TAC) Motor Connector C1
10 C153
11 A/C Compressor Clutch Connector
12 A/C Refrigerant Pressure Sensor Connector
13 Knock Sensor (KS) - Bank 2
14 Engine Oil Level Switch Connector
15 Starter Solenoid Power
16 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Fig 16: Rear of the Engine Component View (8.1L)
GM1399200Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 16

Callout Component Name
1 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
2 Automatic Transmission Input Shaft Speed (At ISS) Sensor
3 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
4 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
5 Vehicle Speed Sensor (VSS)
6 Park Neutral Position (PNP) Switch Connector
7 C145
8 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Fig 17: SEO Harness Routing Component View
GM1370946Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 17

Callout Component Name
1 C202
2 Stop Lamp Switch Connector
3 C160 (5X7, 5Y0)
4 C119 (9L4)
5 C250
6 C216
7 S223
8 S220
9 Roof Beacon Switch Connector (5X7, 5Y0, 5G4, TRW)
10 Dash Panel
11 Fuse Block - Mobile Radio (9L4)
12 S222
13 S221
14 Blunt Cut Wires (9L4)
15 Relay Block - I/P C5
16 Relay Block - I/P C8
17 C210
18 Park Brake Switch Connector
19 Clutch Pedal Position (CPP) Switch
Fig 18: Instrument Panel Component View
GM894047Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 18

Callout Component Name
1 C104 (YE9)
2 C106 (PTO)
3 Fuse Block Underhood - C1
4 C115 (NYS)
5 C105 (LB7)
6 S214 (NP8)
7 S202
8 P110
9 S213
10 S205
11 C222 (Except HP2)
12 C209 (Z55 or E52)
13 C306
14 C249
15 S210 (UQ7 and Y91)
16 C201
17 S218
18 C221
19 C206 (Y91 or HP2)
20 S212 (NYS)
21 P100
22 C154 (NP1 or NP8)
23 C102
Fig 19: Left Front Door Harness Component View
GM1461388Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 19

Callout Component Name
1 Door Latch Assembly
2 Door Frame
3 Fuse Block - I/P C3
4 Power Window Motor Connector
Fig 20: Right Front Door Harness Component View
GM1461389Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 20

Callout Component Name
1 Door Frame
2 Door Latch Assembly
3 Power Window Motor Connector
4 Junction Block - I/P C2
Fig 21: Driver Seat Component Views (1 Of 2)
GM854624Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 21

Callout Component Name
1 C321
2 Seat Adjuster Switch - Driver
3 Memory Seat Module - C4
4 Memory Seat Module - C3
5 Seat Bolster/Lumbar Switch - Driver
6 Seat Recliner Motor - Driver
7 C305
8 C323
9 C325
10 C322
11 Seat Rear Vertical Motor - Driver
12 Seat Front Vertical Motor - Driver
13 Memory Seat Module - C2
14 Memory Seat Module - C1
15 Seat Horizontal Motor - Driver
16 C320
Fig 22: Driver Seat Component Views (2 Of 2)
GM854618Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 22

Callout Component Name
1 Seat Bolster Motor - Driver
2 Seat Lumbar Motor - Driver
3 Heated Seat Element - Driver Cushion
4 C324
5 Seat Belt Switch Connector
6 Heated Seat Element - Driver Cushion Connector
Fig 23: Front Passenger Seat Component Views (1 Of 2) (W/ AN3)
GM854616Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 23

Callout Component Name
1 Seat Horizontal Motor - Front Passenger
2 Seat Front Vertical Motor - Front Passenger
3 Seat Rear Vertical Motor - Front Passenger
4 C388
5 C326
6 C399
7 Seat Recliner Motor - Front Passenger
8 Seat Adjuster Switch - Front Passenger
9 Seat Adjuster Switch Connector
Fig 24: Front Passenger Seat Component Views (2 Of 2) (W/ AN3)
GM854613Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 24

Callout Component Name
1 Seat Bolster Motor - Front Passenger
2 Seat Lumbar Motor - Front Passenger
3 Heated Seat Element - Front Passenger Cushion Connector
4 C329
Fig 25: Console Harness
GM1407819Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 25

Callout Component Name
1 Auxiliary Power Outlet - Front Connector
2 S333
3 S307
4 S303
5 Rear Seat Audio (RSA) Controller Connector
6 Auxiliary Power Outlet - Console Connector
7 Audio Amplifier Connector C2
8 Audio Amplifier Connector C1
9 Cigar Lighter
10 C306
11 Speaker - Subwoofer Connector
12 Speaker - Subwoofer (UQ7)
Fig 26: Chassis and License Lamp Harnesses Component View
GM1326843Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 26

Callout Component Name
1 Suspension Damper Solenoid - RF (ZX3)
2 Wheel Speed Sensor (WSS) - RF
3 Suspension Damper Solenoid - RR (ZX3)
4 License Lamp - Right
5 G401
6 License Lamp - Left
7 Junction Block - Rear Lamps C3
8 Suspension Damper Solenoid - LR (ZX3)
9 Fuel Pump and Sender Assembly/Fuel Tank Pressure (FTP) Sensor Connectors
10 Evaporative Emission (EVAP) Canister Vent Solenoid
11 S312
12 Electronic Brake Control Module (EBCM)
13 Stud #1 Trailer Connector
14 C198
15 Fuse Block - Underhood C9
16 Fuse Block - Underhood C3
17 C102
18 Wheel Speed Sensor (WSS) - LF
19 Suspension Damper Solenoid - LF (ZX3)
20 C152
21 S140
22 Brake Pressure Differential Switch
Fig 27: Energy Storage Box (ESB), 42V, and Accessory Power Receptacle Harnesses Component View (HP2)
GM1361153Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 27

Callout Component Name
1 S430
2 Chassis
3 S330
4 Energy Storage Box (ESB)
5 Battery Cable Harness (42V)
6 P105
7 C140
8 Starter/Generator Control Module
9 C122
10 C121
11 S121
12 Accessory Power Receptacle Harness
13 S120
14 S326
15 S332
16 S331
17 C341
18 Accessory Power Receptacle Connector
Fig 28: Headliner and Brake/Clutch Harnesses Component View
GM1327860Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 28

Callout Component Name
1 C355
2 S345
3 Courtesy/Reading Lamp - Rear Connector
4 Headliner
5 Center High Mounted Stop Lamp (CHMSL) Connector
6 Driver Side B - Pillar Molding
7 S321
8 Relay Block - I/P Connectors - C3 and C4
9 Park Brake Switch Connector
10 Stop Lamp Switch Connector
11 C205 (HP2)
12 C214
13 Inside Rearview Mirror Connector
Fig 29: Body Harness Component View
GM1327859Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 29

Callout Component Name
1 Fuse Block - I/P C4
2 G304
3 G330 (AL0)
4 G399 (AG2)
5 C396
6 G306
7 Headliner
8 Rear Window Defogger Grid Connector (Crew Cab)
9 Floor Panel
10 G305
11 C310
12 C305
13 Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector
14 C221
15 C223
16 Relay Block - I/P C10
17 C222
18 Body Control Module (BCM) C6
Fig 30: C210 and Relay Block Component View - I/P - C4
GM814939Courtesy of GENERAL MOTORS CORP.
Callouts For Fig 30

Callout Component Name
1 Relay Block - I/P
2 Relay Block - I/P - C4
3 C210 - Roof Beacon Relay Inline
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