Harness Routing Views. GMC Truck GMC K Pickup

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Harness Routing Views

Figure 1:

Windshield Washer and Forward Lamp Harness


(1)	Forward Lamp Harness
(2)	C116
(3)	Windshield Washer Motor Wiring Harness
(4)	Windshield Washer Motor, Front
(5)	Windshield Washer Motor, Rear
(6)	Windshield Washer Reservoir
(7)	Battery, LH (Auxiliary/Diesel Only)

Figure 2:

7.4L Engine, C105, Rear View


(1)	C105

Figure 3:

Dual Generator Support Wiring


(1)	Generator, RH
(2)	Generator Cable
(3)	C115
(4)	Generator, LH
(5)	Generator Connector, LH
(6)	Battery, LH
(7)	Electronic Brake Control Module (EBCM)

Figure 4:

Engine Harness, Rear (Diesel)


(1)	C114
(2)	C112
(3)	C113
(4)	Fuel Heater Connector
(5)	Glow Plug Controller
(6)	Glow Plug Wiring Harness, LH
(7)	Engine Harness
(8)	Glow Plug Controller Connector
(9)	Water-In-Fuel Sensor Connector

Figure 5:

Connectors: C100, C103, C104, C131, C132, C140, C142


(1)	C132 (Automatic Transfer Case)/C140 (Selectable Transfer Case)
(2)	C130
(3)	C100
(4)	C104 (IP Harness)
(5)	C103 (Engine Harness)
(6)	C104 (Taillamp Ext. Harness)
(7)	C103 (Taillamp Ext. Harness)
(8)	Taillamp Ext. Harness
(9)	Engine Harness
(10)	Trailer Wiring Harness
(11)	C131 (Automatic Transfer Case)/C142 (Selectable Transfer Case)
(12)	C132 (Automatic Transfer Case)/C140 (Selectable Transfer Case)

Figure 6:

Underhood Lamp


(1)	Underhood Lamp
(2)	G108
(3)	Underhood Lamp Connector
(4)	Engine Harness
(5)	P101

Figure 7:

Underhood Fuse Block and Wiring (CNG)


(1)	C119
(2)	C117
(3)	C118
(4)	ABS Wiring Harness
(5)	Engine Wiring Harness
(6)	C103
(7)	C130
(8)	C100
(9)	C106
(10)	Underhood Fuse Block

Figure 8:

Connectors: C107, C120 (4L80E w/S4WD)


(1)	C107
(2)	C120

Figure 9:

Connectors: C107, C120 (5-Speed Manual)


(1)	C120
(2)	C107

Figure 10:

4L60-E, C122


(1)	C122
(2)	C107

Figure 11:

Crossbody Harness, Driver Side Dash Area


(1)	S266
(2)	S256
(3)	S255
(4)	D203
(5)	S258
(6)	C231
(7)	Crossbody Harness
(8)	S257
(9)	Radio Amplifier Relay
(10)	S259
(11)	S260
(12)	S261
(13)	Audio Amplifier
(14)	C232
(15)	C210
(16)	C298
(17)	S251
(18)	IP Harness

Figure 12:

Convenience Center, C205, C210, C218, C221


(1)	C210
(2)	C218
(3)	C221
(4)	C205
(5)	IP Wiring Harness
(6)	C280
(7)	Convenience Center

Figure 13:

Connectors: C221, C222, C301,C302 (Crossbody to Front to Rear Body Harness)


(1)	C222
(2)	C221
(3)	C302
(4)	C301

Figure 14:

Connector: C203 (Convenience Center)


(1)	C223

Figure 15:

IP Wiring, Tranfer Case Shift Control Module


(1)	DRL Module
(2)	C298
(3)	C233
(4)	C100
(5)	IP Harness
(6)	Steering Column Harness and C266
(7)	C271
(8)	Transfer Case Shift Control Module, Connector C1
(9)	Transfer Case Shift Control Module, Connector C2
(10)	Transfer Case Shift Control Module

Figure 16:

Connectors: C227, C233, C266 (IP Left Side)


(1)	C227
(2)	C266
(3)	C234

Figure 17:

Connectors: C200, C204, C299 (Right Side, Gas)


(1)	Passenger IP Inflation Module Connector
(2)	C203
(3)	C200
(4)	C299

Figure 18:

Connectors: C200, C204, C230, C299 (IP Wiring Right Side, Diesel)


(1)	IP Harness
(2)	Low Level Coolant Level Module
(3)	C200
(4)	IP Compartment Box Light Connector
(5)	C204
(6)	C230
(7)	Courtesy Lamp, RF
(8)	Vehicle Speed Sensor Buffer (VSSB)
(9)	Powertrain Control Module (PCM)
(10)	C299
(11)	Door Jamb Switch and Connector, RF

Figure 19:

Heater and A/C Wiring, C203, G202


(1)	G202
(2)	C203

Figure 20:

Connectors: C300, C307 (Overhead Console)


(1)	Front-to-Rear Body Harness
(2)	C307
(3)	Dome Lamp Connector, Front
(4)	Auxiliary HVAC Control Module Harness
(5)	Dome Lamp Connector, Front
(6)	Dome Lamp Harness
(7)	Garage Door Lamp Switch
(8)	Auxiliary HVAC Control Module Connector, Front
(9)	Overhead Console Harness

Figure 21:

Overhead Console Wiring Harness (Luxury)


(1)	Auxiliary HVAC Control Module Connector, Rear
(2)	Auxiliary HVAC Control Module Switch, Rear
(3)	Dome Lamp Connector, Rear
(4)	C306
(5)	Auxiliary HVAC Control Module Switch, Front
(6)	Overhead Console
(7)	C307
(8)	Auxiliary HVAC Control Module Connector, Front
(9)	C309

Figure 22:

Center Floor Console Harness (Luxury)


(1)	C304
(2)	Console Harness
(3)	Crossbody Harness
(4)	IP Harness
(5)	C305

Figure 23:

Power Seat Wiring Harness Connectors


(1)	C236 (Left)/C237 (Right)
(2)	C212 (Left)/C229 (Right)
(3)	C211 (Left)/C228 (Left)

Figure 24:

Rear Seat Harness (Luxury)


(1)	C311
(2)	Floor
(3)	Crossbody Harness
(5)	C310
(6)	Seat Belt Harness Connector

Figure 25:

Front Door Wiring


(1)	Speaker Connector, Tweeter
(2)	Rear Window Lockout Switch Connector
(3)	Power Window Switch
(4)	Courtesy Light Connector
(5)	Door Lock Switch Connector
(6)	Power Window Switch Connector
(7)	Power Mirror Switch Connector
(8)	Speaker Connector
(9)	Power Window Motor Connector
(10)	C206 (Left)/C214 (Right)
(11)	C209 (Left)
(12)	C208 (Left)/C214 (Right)
(13)	C207 (Left)/C213 (Right)
(14)	Crossbody Harness
(15)	P600 (Right Front)/P500 (Left)
(16)	Door Harness
(17)	C601 (Right)/C501 (Left)
(18)	Door Lock Connector (Keyless Entry)

Figure 26:

Rear Door Wiring


(1)	Power Door Lock Motor Connector
(2)	Courtesy Lamp, Door Connector
(3)	Speaker, Rear Door
(4)	Speaker Connector
(5)	Power Window Motor Connector
(6)	C496 (Right)/C498 (Left)
(7)	Crossbody Harness
(8)	C497 (Right)/C499 (Left)
(9)	P800 (Right)/P700 (Left)
(10)	Power Window Switch Connector
(11)	Door Wiring Harness

Figure 27:

Center High Mounted Stop and Cargo Lamp Wiring, C410, C411 (except Suburban/Utility)


(1)	C411
(2)	C410

Figure 28:

Rear Body Harness


(1)	CHMSL Connector
(2)	C402
(3)	C303
(4)	Speaker Connector, LR
(5)	Front to Rear Body Harness
(6)	C314 (Liftgate)
(7)	C405 (Cargo Doors)
(8)	C406 (Liftgate)
(9)	Speaker Connector, RR
(10)	C406 (Cargo Doors)
(11)	Door Lock Switch Connector, Rear
(12)	Door Lock Actuator Connector, Rear
(13)	G400
(14)	Auxiliary Power Connector, Rear
(15)	Door Jamb Switch Connector, Rear (Liftgate)
(16)	C406 (Cargo Doors)
(17)	Door Jamb Switch Connector, RR (Cargo Doors)

Figure 29:

Auxiliary A/C Wiring


(1)	Auxiliary HVAC Blower Relays; Low/Meduim/High
(2)	C401
(3)	C400
(4)	Auxiliary Blower Motor
(5)	Auxiliary Blower Resistor
(6)	Auxiliary Temperature Door Motor
(7)	Auxiliary Mode Door Motor

Figure 30:

Endgate Marker Lamps


(1)	C408
(2)	Endgate Marker Lamps

Figure 31:

Tail and Stoplamp Harness Connectors


(1)	Tail/Stop Lamp Extension Harness
(2)	Tail/Stop Lamp Harness
(3)	Tail/Stop Lamp Connector, RH
(4)	License Plate Lamp Harness
(5)	License Plate Lamps
(6)	C409
(7)	C407

Figure 32:

Liftgate Release Motor Wiring


(1)	C406
(2)	C404
(3)	Liftgate Release Motor
(4)	P410
(5)	C450
(6)	P409
(7)	C314
(8)	C402

Figure 33:

Rear Window Wiring Harness


(1)	Rear Window Wiper Motor and Connector
(2)	P400
(3)	Rear Window Defogger Connector, Right
(4)	Rear Window Defogger Connector, Left

Figure 34:

Underhood Fuse Block and Wiring (Police Package) 1 of 2


(1)	Forward Lamp Harness
(2)	Underhood Fuse Block
(3)	Emergency Roof Lamp Wiring
(4)	C101 (Auxiliary Fan Only)
(5)	Convenience Center
(6)	C110
(7)	C108 (Police Package Only)
(8)	C102

Figure 35:

Underhood Fuse Block Wiring (Police Package) 2 of 2


(1)	Positive Battery Cable
(2)	Electronic Brake Control Module (EBCM)
(3)	C109
(4)	P100
(5)	Underhood Fuse Block
(6)	Emergency Beacon Relay
(7)	Battery, LH (Auxiliary/Diesel Only)

Figure 36:

IP Wiring Harness, Emergency Rooflamp Switch (Police Package)


(1)	Convenience Center
(2)	C238
(3)	Emergency Roof Lamp Harness
(4)	Crossbody Harness
(5)	Emergency Roof Lamp Switch, Connector
(6)	Emergency Roof Lamp Switch
(7)	Headlamp and Panel Dimmer Switch
(8)	Headlamp and Panel Dimmer Switch, Connector
(9)	IP Harness

Figure 37:

Spotlamp Wiring Harness (Police Package)


(1)	C271
(2)	Crossbody Harness
(3)	C231
(4)	C272
(5)	C232
(6)	Convenience Center
(7)	IP Wiring Harness
(8)	Spotlamp Wiring Harness

Figure 38:

IP Wiring Harness, Radio (Police Package)


(1)	Radio
(2)	Rear Wiper Switch
(3)	Liftgate Release Switch
(4)	DRL/Radio Override Switch
(5)	C235
(6)	Auxiliary Power Harness
(7)	Speaker and Flasher Wiring Harness
(8)	C245
(9)	Horn Wiring Harness
(10)	C242
(11)	C244