GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Canyon Pickup - 2WD 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Harness Routing Views
Figure 1:

Forward Lamp Harness Routing
Object Number: 1331500 Size: LF
(1)Horn Assembly
(2)Fuse Block - Underhood X1
(3)X108 (Forward Lamp Harness to Front Turn Signal Harness)
(4)Headlamp - LH (-TT5)
(5)Headlamp - Low Beam - Left (TT5)
(6)Headlamp - High Beam - Left (TT5)
(7)Fog Lamp - Left Front (T96)
(8)Inflatable Restraint Front End Sensor - Left
(9)Ambient Air Temperature Sensor (DF8)
(10)Inflatable Restraint Front End Sensor - Right
(11)Fog Lamp - Right Front (T96)
(12)Headlamp - High Beam - Right (TT5)
(13)Headlamp - Low Beam - Right (TT5)
(14)Headlamp - RH (-TT5)
(15)X104 (Forward Lamp Harness to Body Harness)
(16)X103 (Forward Lamp Harness to Body Harness)
(17)X107 (Forward Lamp Harness to Front Turn Signal Harness)
(18)Forward Lamp Harness (TT5)
(19)Forward Lamp Harness (-TT5)
Figure 2:

Engine Harness Routing 1 of 2 (2.8L)
Object Number: 1333135 Size: LF
(1)Engine Control Module (ECM) X2
(2)Engine Control Module (ECM) X3
(3)Throttle Body
(4)Manifold Absolute Pressure (MAP) Sensor
(5)Evaporative Emission (EVAP) Canister Purge Solenoid
(6) Knock Sensor (KS)
(7)Generator
(8)Crankshaft Position (CKP) Sensor
(9)X105 (4WD)/X106 (2WD) (Engine Harness to Body Harness)
(10)Fuse Block - Underhood X2
(11)A/C Compressor Clutch
(12)G101
(13)G103
(14)G102
(15)Engine Oil Pressure (EOP) Sensor
(16)Camshaft Position (CMP) Sensor
(17)X100 (4WD) (Engine Harness to Front Axle Jumper Harness)
(18)Camshaft Position (CMP) Actuator Solenoid - Bank 1 Exhaust
(19)Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor
Figure 3:

Engine Harness Routing 2 of 2 (2.8L)
Object Number: 1333200 Size: LF
(1)Ignition Coil 3
(2)Ignition Coil 2
(3)Ignition Coil 1
(4)Ignition Coil 4
(5)Engine Coolant Temperature (ECT) Sensor
(6)X175 (M30) (Engine Harness to Transmission)
(7)Backup Lamp Switch (MA5)
(8)Vehicle Speed Sensor (VSS)
(9)Transfer Case Encoder Motor X1 (4WD)
(10)Heated Oxygen Sensor (HO2S) 2 (MA5)
(11)Transfer Case Encoder Motor X3 (4WD)
(12)Transfer Case Encoder Motor X4 (4WD)
(13)Transfer Case Encoder Motor X2 (4WD)
(14)Heated Oxygen Sensor (HO2S) 2 (M30)
(15)Park/Neutral Position Switch (M30)
(16)X101 (Engine Harness to Fuel Rail Harness)
Figure 4:

Engine Harness Routing 1 of 2 (3.5L)
Object Number: 1334046 Size: LF
(1)Engine Control Module (ECM) X2
(2)Engine Control Module (ECM) X3
(3)Throttle Body
(4)Manifold Absolute Pressure (MAP) Sensor
(5)Evaporative Emission (EVAP) Canister Purge Solenoid
(6) Knock Sensor (KS) 2
(7)Generator
(8)X105 (4WD)/X106 (2WD) (Engine Harness to Body Harness)
(9)Fuse Block - Underhood X2
(10)Camshaft Position (CMP) Sensor 2
(11)Crankshaft Position (CKP) Sensor
(12)A/C Compressor Clutch
(13)Knock Sensor (KS) 1
(14)G101
(15)G103
(16)G102
(17)Engine Oil Pressure (EOP) Sensor
(18)Camshaft Position Sensor 1
(19)X100 (4WD) (Engine Harness to Front Axle Jumper Harness)
(20)Camshaft Position (CMP) Actuator Solenoid - Bank 1 Exhaust
(21)Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor
Figure 5:

Engine Harness Routing 2 of 2 (3.5L)
Object Number: 1334262 Size: LF
(1)Ignition Coil 5
(2)Ignition Coil 4
(3)Ignition Coil 3
(4)Ignition Coil 2
(5)Ignition Coil 1
(6)Engine Coolant Temperature (ECT) Sensor
(7)X175 (M30) (Engine Harness to Transmission)
(8)Backup Lamp Switch (MA5)
(9)Heated Oxygen Sensor (HO2S) 2 (M30)
(10)Vehicle Speed Sensor (VSS) (M30)
(11)Transfer Case Encoder Motor X1 (4WD)
(12)Heated Oxygen Sensor (HO2S) 2 (MA5)
(13)Transfer Case Encoder Motor X3 (4WD)
(14)Transfer Case Encoder Motor X4 (4WD)
(15)Transfer Case Encoder Motor X2 (4WD)
(16)Vehicle Speed Sensor (VSS) (MA5)
(17)Park/Neutral Position Switch (M30)
(18)X101 (Engine Harness to Fuel Rail Harness)
Figure 6:

Battery Cable Harness Routing
Object Number: 1390640 Size: LF
(1)G104
(2)Starter
(3)Generator X2
(4)Battery
(5)G100
(6)Battery Negative Terminal
(7)Fuse Block - Underhood
(8)Ring Terminal Battery
(9)Ring Terminal Generator
(10)Battery Positive Terminal
(11)Generator
Figure 7:

I/P Harness Routing
Object Number: 1331461 Size: LF
(1)Accessory Switch X2
(2)Hazard Switch
(3)Accessory Switch X1
(4)Digital Radio Receiver (U2K)
(5)Inflatable Restraint I/P Module
(6)Ambient Light Sensor
(7)Vehicle Communication Interface Module (VCIM) (UE1)
(8)Courtesy Lamp - Footwell Right
(9)Body Control Module (BCM) X2
(10)X201 (I/P Harness to Body Harness)
(11)HVAC Control Module X1
(12)Auxiliary Power Outlet 2
(13)Auxiliary Power Outlet 1
(14)HVAC Control Module X2
(15)Courtesy Lamp - Footwell Left
(16)Data Link Connector (DLC)
(17)X204 (Steering Column Harness to I/P Harness)
(18)X208 (I/P Harness to Body Harness)
(19)X200 (I/P Harness to Body Harness)
(20)Headlamp and Panel Dimmer Switch
(21)Instrument Panel Cluster (IPC)
(22)Radio X1
(23)Radio X2
Figure 8:

HVAC Harness Routing
Object Number: 1390708 Size: LF
(1)Evaporator Temperature Sensor (C60)
(2)X203 (I/P Harness to the HVAC Harness)
(3)Recirculation Actuator (C60)
(4)Blower Motor
(5)J202
(6)Blower Motor Resistor Assembly
Figure 9:

Dome Lamp Harness Routing
Object Number: 1391996 Size: LF
(1)Dome Lamp
(2)X310
Figure 10:

Body Harness Routing 1 of 3 (Regular Cab)
Object Number: 1332665 Size: LF
(1)Wheel Speed Sensor (WSS) - Left Front
(2)Brake Fluid Level Switch
(3)Windshield Wiper Motor
(4)Pass-through Grommet
(5)Electronic Brake Control Module (EBCM)
(6)G105
(7)X102 (Body Harness to Chassis Harness)
(8)X105 (4WD)/X106 (2WD) (Engine Harness to Body Harness)
(9)Fuse Block - Underhood X4
(10)Fuse Block - Underhood X5
(11)Fuse Block - Underhood X7
(12)Fuse Block - Underhood X6
(13)X104 (Forward Lamp Harness to Body Harness), X103 (Forward Lamp Harness to Body Harness)
(14)G106
(15)Wheel Speed Sensor (WSS) - Right Front
(16)Engine Control Module (ECM) X1
(17)Windshield Washer Fluid Pump
(18)Pass-through Grommet
(19)A/C Refrigerant Pressure Sensor (C60)
Figure 11:

Body Harness Routing 2 of 3 (Regular Cab)
Object Number: 1332342 Size: LF
(1)Body Control Module (BCM) X1
(2)X201 (I/P Harness to Body Harness)
(3)G301
(4)G302
(5)Cargo Lamp/Center High Mounted Stop Lamp (CHMSL)
(6)Door Jamb Switch - Front Passenger
(7)X313 (Body Harness to Passenger Seat Harness)
(8)Seat Belt Pretensioner - Right Front
(9)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(10)Transfer Case Shift Control Module
(11)X314 (Body Harness to Driver Seat Harness)
(12)G Sensor
(13)Seat Belt Pretensioner - Left Front
(14)Door Jamb Switch - Driver
(15)G300
(16)Stop Lamp Switch
(17)TCC Brake/Cruise Release Switch
(18)Park Brake Switch
(19)J303
(20)Clutch Switch
(21)Clutch Start Switch
(22)X208 (I/P Harness to Body Harness)
(23)X202 (Driver Door Harness to Body Harness)
(24)C209 (Body Harness to Driver Door Harness)
(25)C200 (I/P Harness to Body Harness)
(26)C275 (Body Harness to Steering Wheel Harness)
(27)Inflatable Restraint Roof Rail Module - Left
(28)Accelerator Pedal Position (APP) Sensor
(29)C310 (Dome Lamp Harness to Body Harness)
(30)C210 and C211 (A31) (Body Harness to Passenger Door Harness)
(31)Inflatable Restraint Roof Rail Module - Right
(32)Inside Rearview Mirror
Figure 12:

Body Harness Routing 3 of 3 (Regular Cab)
Object Number: 1332540 Size: LF
(1)J102
(2)J100
(3)J304
(4)J311
(5)J303
Figure 13:

Body Harness Routing 1 of 3 (Extended Cab)
Object Number: 1332665 Size: LF
(1)Wheel Speed Sensor (WSS) - Left Front
(2)Brake Fluid Level Switch
(3)Windshield Wiper Motor
(4)Pass-through Grommet
(5)Electronic Brake Control Module (EBCM)
(6)G105
(7)X102 (Body Harness to Chassis Harness)
(8)X105 (4WD)/X106 (2WD) (Engine Harness to Body Harness)
(9)Fuse Block - Underhood X4
(10)Fuse Block - Underhood X5
(11)Fuse Block - Underhood X7
(12)Fuse Block - Underhood X6
(13)X104 and X103 (Forward Lamp Harness to Body Harness)
(14)G106
(15)Wheel Speed Sensor (WSS) - Right Front
(16)Powertrain Control Module (PCM) X1
(17)Windshield Washer Fluid Pump
(18)Pass-through Grommet
(19)A/C Refrigerant Pressure Sensor (C60)
Figure 14:

Body Harness Routing 2 of 3 (Extended Cab)
Object Number: 1390332 Size: LF
(1)X310 (Dome Lamp Harness to Body Harness)
(2)X201 (I/P Harness to Body Harness)
(3)G301
(4)G302
(5)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(6)X313 (Body Harness to Passenger Seat Harness)
(7)X317 (Body Harness to RR Passenger Door Harness)
(8)X312 (Body Harness to RR Passenger Door Harness)
(9)Cargo Lamp/Center High Mounted Stop Lamp (CHMSL)
(10)X316 (Body Harness to LR Passenger Door Harness)
(11)X311 (Body Harness to LR Passenger Door Harness)
(12)X314 (Body Harness to Driver Seat Harness)
(13)Transfer Case Shift Control Module X1
(14)Transfer Case Shift Control Module X2
(15)G Sensor
(16)G300
(17)Accelerator Pedal position (APP) Sensor
(18)J102
(19)J100
(20)Stop Lamp Switch
(21)TCC Brake/Cruise Release Switch
(22)Park Brake Switch
(23)Clutch Switch
(24)Inflatable Restraint Roof Rail Module - Right
(25)X211 (A31) (Body Harness to Passenger Door Harness)
(26)X210 (A31) (Body Harness to Passenger Door Harness)
(27)X200 (I/P Harness to Body Harness)
(28)X275 (Body Harness to Steering Wheel Harness)
(29)Clutch Start Switch (MA5)
(30)Body Control Module (BCM) X1
(31)X209 (Body Harness to Driver Door Harness)
(32)X202 (Body Harness to Driver Door Harness)
(33)Inside Rearview Mirror
Figure 15:

Body Harness Routing 3 of 3 (Extended Cab)
Object Number: 1390611 Size: LF
(1)J304
(2)J311
(3)J303
Figure 16:

Body Harness Routing 1 of 3 (Crew Cab)
Object Number: 1332665 Size: LF
(1)Wheel Speed Sensor (WSS) - Left Front
(2)Brake Fluid Level Switch
(3)Windshield Wiper Motor
(4)Pass-through Grommet
(5)Electronic Brake Control Module (EBCM)
(6)G105
(7)X102 (Body Harness to Chassis Harness)
(8)X105 (4WD)/X106 (2WD) (Engine Harness to Body Harness)
(9)Fuse Block - Underhood X4
(10)Fuse Block - Underhood X5
(11)Fuse Block - Underhood X7
(12)Fuse Block - Underhood X6
(13)X104 (Forward Lamp Harness to Body Harness) and X103 (Forward Lamp Harness to Body Harness)
(14)G106
(15)Wheel Speed Sensor (WSS) - Right Front
(16)Engine Control Module (ECM) X1
(17)Windshield Washer Fluid Pump
(18)Pass-through Grommet
(19)A/C Refrigerant Pressure Sensor (C60)
Figure 17:

Body Harness Routing 2 of 3 (Crew Cab)
Object Number: 1332757 Size: LF
(1)Body Control Module (BCM) X1
(2)X201 (I/P Harness to Body Harness)
(3)G301
(4)G302
(5)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(6)X317 (Body Harness to Right Rear Passenger Door Harness)
(7)Cargo Lamp/Center High Mounted Stop Lamp (CHMSL)
(8)Door Jamb Switch - Front Passenger
(9)Seat Belt Pretensioner - Right Front
(10)Door Jamb Switch - Right Rear
(11)X313 (Body Harness to Passenger Seat Harness)
(12)X316 (Body Harness to Left Rear Passenger Door Harness)
(13)X314 (Body Harness to Driver Seat Harness)
(14)Seat Belt Pretensioner - Left Front
(15)Door Jamb Switch - Left Rear
(16)Door Jamb Switch - Driver
(17)Transfer Case Shift Control Module X1 and X2
(18)G Sensor
(19)G300
(20)Stop Lamp Switch
(21)TCC Brake/Cruise Release Switch
(22)Park Brake Switch
(23)J303
(24)Clutch Switch
(25)Clutch Start Switch
(26)X208 (I/P Harness to Body Harness)
(27)X202 (Driver Door Harness to Body Harness)
(28)X209 (Body Harness to Driver Door Harness)
(29)X200 (I/P Harness to Body Harness)
(30)X275 (Body Harness to Steering Wheel Harness)
(31)Inflatable Restraint Roof Rail Module - Left
(32)Accelerator Pedal Position (APP) Sensor
(33)X310 (Dome Lamp Harness to Body Harness)
(34)X210 and X211 (A31) (Body Harness to Passenger Door Harness)
(35)Inflatable Restraint Roof Rail Module - Right
(36)Inside Rearview Mirror
Figure 18:

Body Harness Routing 3 of 3 (Crew Cab)
Object Number: 1332760 Size: LF
(1)J100
(2)J102
(3)J302 (A31)
(4)J307
(5)J308 (A31)
(6)J309 (A31)
(7)J311
(8)J300
(9)J301 (AG1/AG2)
Figure 19:

Driver Door Harness Routing
Object Number: 1390748 Size: LF
(1)Door Lock and Window Switch - Driver
(2)Speaker - Left Front Door Tweeter (UQ2)
(3)Outside Rearview Mirror - Driver
(4)Outside Rearview Mirror Switch
(5)X202 (Driver Door Harness to Body Harness)
(6)X209 (Body Harness to Driver Door Harness)
(7)Speaker - Left Front Door
(8)Window Motor - Driver
(9)Inflatable Restraint Side Impact Sensor (SIS) - Left Connector (ASF)
(10)J500
(11)Door Lock Actuator - Driver
Figure 20:

Front Passenger Door Harness Routing
Object Number: 1360617 Size: LF
(1)Outside Rearview Mirror - Front Passenger
(2)Speaker - Right Front Door Tweeter (UQ2)
(3)Door Lock and Window Switch - Front Passenger
(4)Door Lock Actuator - Front Passenger
(5)Inflatable Restraint Side Impact Sensor (SIS) - Right Connector (ASF)
(6)Window Motor - Front Passenger
(7)Speaker - Right Front Door
(8)X211 (Front Passenger Door Harness to Body Harness)
(9)X210 (Body Harness to Front Passenger Door Harness)
Figure 21:

Left Rear Door Harness Routing (Extended Cab)
Object Number: 1391098 Size: LF
(1)Speaker - Left Rear Door
(2)X312 (Body Harness to Left Rear Door Harness)
(3)X316 (Body Harness to Left Rear Door Harness)
(4)Seat Belt Pretensioner - Left Front
(5)Door Jamb Switch - Driver
Figure 22:

Right Rear Door Harness Routing (Extended Cab)
Object Number: 1391101 Size: LF
(1)Speaker - Right Rear Door
(2)Door Jamb Switch - Front Passenger
(3)Seat Belt Pretensioner - Right Front
(4)X317 (Body Harness to Right Rear Door Harness)
(5)X311 (Body Harness to Right Rear Door Harness)
Figure 23:

Left Rear Door Harness Routing (Crew Cab)
Object Number: 1361614 Size: LF
(1)Speaker - Left Rear Door
(2)Door lock and Window Switch - Left Rear
(3)X316 (Body Harness to Left Rear Door Harness)
(4)Window Motor - Left Rear
(5)Door Lock Actuator - Left Rear
Figure 24:

Right Rear Door Harness Routing (Crew Cab)
Object Number: 1390861 Size: LF
(1)Door Lock and Window Switch - Right Rear
(2)Speaker - Right Rear Door
(3)Door Lock Actuator - Right Rear
(4)Window Motor - Right Rear
(5)X317 (Body Harness to Right Rear Door Harness)
Figure 25:

Chassis Harness Routing
Object Number: 1333088 Size: LF
(1)Chassis Frame
(2)Fuel Tank Pressure (FTP) Sensor
(3)Fuel Pump and Sender Assembly
(4)Evaporative Emission (EVAP) Canister Vent Solenoid
(5)X402 (Chassis Harness to Right Rear Lamp Assembly)
(6)J404
(7)X401 (Chassis Harness to Left Rear Lamp Assembly)
(8)X400 (Chassis Harness to License Lamp Harness)
(9)J403
(10)J402
(11)J400
(12)J401
(13)J310
(14)X102 (Body Harness to Chassis Harness)
Figure 26:

License Plate Lamp Harness Routing
Object Number: 1391599 Size: MF
(1)License Lamp - Right
(2)J900
(3)J901
(4)License Lamp - Left
(5)X400