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Harness Routing Views

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Forward Lamp Harness Routing (Gas -LY6)
GM1846449Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G101
2 Left Front Fender
3 Left Front Headlamp
4 G100
5 Radiator
6 X106
7 J101
8 J100
9 X103
10 X100
11 Fuse Block - Underhood X1
Fig 2: Forward Lamp Harness Routing (Diesel/LY6)
GM1922972Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 J101
2 X106
3 X103
4 J100
5 X100
6 G100
7 G101
Fig 3: Engine Harness Routing - Left Side (4.3L)
GM1846447Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Throttle Body
2 G107
3 Transmission
4 X300
5 X109
6 X110 (NQG/NQH/NP2)
7 Fuse Block - Underhood X2
Fig 4: Engine Harness Routing - Top (4.3L)
GM1846445Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Mega Fuse Ring Terminal
2 X175
3 J128
4 J105
5 J106
6 J130
7 Engine Control Module (ECM) X1
8 Engine Control Module (ECM) X2
9 G103
10 X112
11 Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Connector
Fig 5: Camshaft Position Sensor Jumper Harness Routing (4.8L/5.3L/6.0L/6.2L)
GM1922077Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X112
2 Camshaft Position Sensor Jumper Harness
Fig 6: Engine Harness Routing - Left Front Side (4.8L/5.3L/6.0L/6.2L)
GM1846441Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Air Intake Duct
2 X111
3 Fuse Block - Underhood X2
4 X109
5 X110 (NQF/NQG/NQH/NP2)
6 Engine Control Module (ECM) X2
7 Engine Control Module (ECM) X1
8 G102
9 J105
Fig 7: Engine harness Routing - Right Front Side (4.8L/5.3L/6.0L/6.2L)
GM1846440Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Dash Panel
2 X113
3 J106
4 G103
Fig 8: Engine Harness Routing - Rear (4.8L/5.3L/6.0L/6.2L)
GM1846443Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Dash Panel
2 Transmission
3 X175
4 Transfer Case Shift Control Switch (NQG/NP2)
Fig 9: Heated Oxygen Sensor (HO2S) Jumper Harness Routing (31 Series +6.0L)
GM1934388Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X125
2 Heated Oxygen Sensor (H02S) Bank 2 Sensor 2
Fig 10: Engine Harness Jumper to Engine POA Harness (Diesel)
GM1870628Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Battery - Right
2 Fuse Holder - Underhood
3 X127
4 X108
5 X107
6 X123 (PTO)
7 Fuse Block - Underhood
8 X109
9 Battery - Left (6A6/TP2)
10 Engine Control Module (ECM)
11 Transmission Control Module (TCM)
Fig 11: Engine Chassis Harness Routing - Top Rear (Diesel)
GM1870623Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 J104
2 J105
3 J106
4 J132
5 J133 (PTO)
6 X110 (NQF/NQG/NP2)
Fig 12: Front Frame Rail (Diesel)
GM1870627Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X300
2 G300
3 Automatic Transmission Turbine Speed Sensor
4 Automatic Transmission Input Shaft Speed (AT ISS) Sensor
5 Automatic Transmission
6 Vehicle Speed Sensor (VSS)
7 X124 (PTO)
8 Power Take Off (PTO) Module
9 X175
Fig 13: Auxiliary Battery Harness Routing (TP2)
GM1934393Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuse Holder - Underhood
2 Run Relay
3 Auxiliary Battery Harness
4 Auxilary Battery Relay
5 X122
Fig 14: I/P Harness Routing - Engine Compartment
GM1846432Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G110
2 J113 (NQH)
3 Fuse Block - Underhood X5
4 Fuse Block - Underhood X4
5 Left Front Fender
6 X103
7 X109
8 X115 (JL4) or X126 (-JL4)
Fig 15: I/P Harness Routing - Passenger Compartment
GM1846429Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 J201 (-AN3)
2 JX221
3 J200
4 G201
5 X201
6 X205
7 J203 (Y91)
8 J206
9 Junction Block - Right I/P
10 X200
11 Floor Panel
12 X202
13 J207
Fig 16: I/P Extension Harness Routing (-Y91)
GM1846434Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 JX223 (U2K/UK6/UE1)
2 X203 (UE1/U3U/UVB)
3 X204 (U42)
4 X212
5 X206 (U42)
6 X213 (COAX)
7 Vehicle Communication Interface Module (VCIM)
8 X211
9 Floor Panel
Fig 17: Fuse Block Jumper Harness Routing (9L4)
GM1890152Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuse Block - Mobile Radio
2 I/P Structure - Right Side
3 J224
4 J219
5 J209
6 X219
7 X214
8 J210
9 J211
10 Mobile Radio Blunt Cuts
11 X226
12 Instrument Panel
Fig 18: Brake Clutch Harness Routing
GM1846991Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Driver Door Frame
2 X205
3 X220 (JL1)
4 Accelerator Pedal Position (APP) sensor Connector
5 Junction Block - Left I/P
Fig 19: Steering Column Harness Routing
GM1933010Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X201
2 X276 (KA9)
3 Heated Steering Fuse (KA9)
4 X277 (KA9)
5 X275
Fig 20: Overhead Console Harness Routing
GM1890108Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X304
2 Inflatable Restraint Passenger Air Bag ON/OFF Indicator (AL0/C99)
3 Cellular Microphone (UE1/U3U/UVB)
4 Roof Beacon Switch (TRW)
5 Sliding Rear Window Switch (A48)
6 Courtesy/Reading Lamps-Front
7 J322
8 J323
9 X313 (CF5/TRW/5X7/5Y0)
10 Roof Mounted Beacon Blunt Cuts (TRW)
11 Roof Beacon Relay (TRW)
Fig 21: Headliner Harness Routing (Regular Cab)
GM1846992Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X304
2 X318
3 J327
4 J328
5 X203 (UE1)
Fig 22: Headliner Harness Routing (Extended Cab)
GM1846993Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X304
2 X318
3 J327
4 J328
5 X203 (UE1/U3U/UVB)
Fig 23: Headliner Harness Routing (Crew Cab)
GM1846994Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X304
2 X318
3 J327
4 J328
5 X321 (A48)
6 X203 (UE1/U3U/UVB)
7 X204 (U42)
8 I/P Trim
Fig 24: Body Harness Routing (Regular Cab)
GM1846438Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X200
2 G302
3 X319 (D07 +UQ3/AZ3)
4 JX339
5 X305
6 G304
7 J304
8 J303
9 X303
10 Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector
11 X275
12 X202
13 X500 (YE9 -AN3/DL3)
14 X501 (YE9 -AN3/DL3)
15 X601 (ASF)
16 X600 (YE9 -AN3/DL3)
Fig 25: Body Harness Routing (Extended Cab)
GM1846437Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X700
2 G303
3 X303
4 Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector
5 X501 (YE9 -AN3/DL3)
6 X275
7 X321 (A48)
8 X202
9 X500 (YE9 -AN3/DL3)
10 G301
11 J304
12 X200
13 X601 (ASF)
14 X600 (YE9 -AN3/DL3)
15 G302
16 JX339
17 X305
18 X319 (D07 +UQ3/AZ3)
19 X800
20 J302
21 G304
22 X320 (A48)
23 J303
24 X322 (UD7)
25 Floor Panel
Fig 26: Body Harness Routing (Crew Cab)
GM1846436Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X601 (ASF)
2 X309 (Y91)
3 G302
4 J302
5 JX339
6 G301
7 J304
8 X305
9 X800
10 G304
11 G307
12 X320 (A48)
13 J303
14 G303
15 X700
16 X303
17 Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector
18 X501 (YE9 -AN3/DL3)
19 X502 (ASF -YE9/+AN3)
20 J301 (-AN3/DL3)
21 X202
22 X500 (YE9 -AN3/DL3)
23 X321 (A48)
24 X600 (YE9 -AN3/DL3)
Fig 27: Chassis Harness Routing (Regular Cab/Extended Cab)
GM1846422Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X300
2 X408 (UD7)
3 Trailer Tow Connector
4 J423 (Gas -4.3L/LMG/LY6/LC9)
5 G401
6 X126
7 X220 (JL1)
8 J331
9 J338 (Gas -4.3L/LMG/LY6)
10 G300
Fig 28: Chassis Harness Routing (Crew Cab)
GM1846424Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X300
2 X408 (UD7)
3 G401
4 J423 (FSCM)
5 J331
6 Fuse Block - Underhood X3
7 X115 (JL4) or X126 (w/o JL4)
8 J338
9 J300
10 G300
Fig 29: Camper Harness Routing and Chassis Harness Routing - Rear
GM1890102Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X414 (UY2/8S3)
2 J420 (UY2)
3 Camper/Trailer Harness
4 J415 (UY2)
5 Chassis Harness
6 J416 (UY2)
7 J417 (UY2)
8 J414 (UY2)
9 J421 (UY2)
10 J410 (UY2)
11 Camper / Trailer Harness Blunt Cuts (UY2)
12 G401
13 Trailer Connector (UY7)
Fig 30: Driver Door Harness Routing
GM1846999Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Door Frame
2 Fuse Block - I/P X4
3 J502
4 X500 (YE9 -AN3/DL3)
5 X502 (ASF -YE9/+AN3)
Fig 31: Passenger Door Harness Routing
GM1847000Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 J604 (YE9 -AN3/DL3)
2 Junction Block - Right I/P X3
3 Door Frame
4 X601 (ASF)
5 X600 (YE9 -AN3/DL3)
6 J603 (YE9 -AN3/DL3)
Fig 32: Left Rear Door Harness Routing (Extended Cab)
GM1846996Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X700
2 Door Frame
Fig 33: Left Rear Door Harness Routing (Crew Cab)
GM1846998Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Door Frame
2 X700
Fig 34: Right Rear Door Harness Routing (Extended Cab)
GM1846995Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Door Frame
2 X800
Fig 35: Right Rear Door Harness Routing (Crew Cab)
GM1846997Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X800
2 Door Handle
3 Door Frame
Fig 36: Driver Seat Harness Routing
GM1913810Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Seat Recline Motor - Driver (AN3)
2 Seat Lumbar Vertical Motor Position Sensor - Driver (AN3)
3 Seat Lumbar Vertical Motor - Driver (AN3)
4 X324 (AN3)
5 Seat Lumbar Horizontal Motor - Driver (AN3)
6 Seat Lumbar Horizontal Motor Position Sensor - Driver (AN3)
7 Seat Recline Position Sensor - Driver (AN3)
8 Seat Lumbar Switch - Driver (AN3)
9 Seat Adjuster Switch - Driver (AG1)
10 Memory Seat Module (AN3)
11 Inflatable Restraint Seat Position Sensor (SPS) - Left (10 Series)
12 Seat Adjuster Assembly - Driver (AG1)
13 Seat Belt Buckle - Driver
Fig 37: Console Harness Routing (Y91/D07/UQA)
GM1846450Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X319 (D07+UQ3)
2 X211
3 Console Bracket
Fig 38: Passenger Seat Harness Routing
GM1913813Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Seat Frame
2 X325 (AN3)
3 Seat Lumbar Vertical Motor - Passenger (AN3)
4 Seat Adjuster Switch - Passenger (AG2)
5 Seat Lumbar Switch - Passenger (AN3)
6 Seat Belt Buckle - Passenger
7 Inflatable Restraint Passenger Presence System (PPS) Module (AL0)
8 Seat Adjuster Assembly - Passenger (AG2)
9 Inflatable Restraint Passenger Presence System (PPS) Sensor (AL0)
10 Seat Recline Motor - Passenger (AN3)
11 Seat Lumbar Horizontal Motor - Passenger (AN3)
Fig 39: Sliding Rear Window Jumper Harness Routing (A48)
GM1847001Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X320
2 Rear Window
3 J336
4 J335
Fig 40: Left and Right Hip Lamp Harness Routing (R05)
GM1922961Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X415
2 J412
3 J419
4 Right Hip Lamp Harness
5 Left Hip Lamp Harness
6 J418
7 J413
8 X416
Fig 41: Rear Bumper Harness Routing
GM1846452Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Rear Bumper
2 J403 (UD7)
3 J404 (UD7)
4 Junction Block - Rear Connector
5 X408 (UD7)
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