Power and Grounding Component Views. GMC Truck Yukon

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2000 🢒 Yukon - 2WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Power and Grounding Component Views

Figure 1:

Lower LF of the Radiator Support Components


(1)	LH Lower Radiator Support
(2)	Forward Lamp Harness
(3)	Negative Battery Cable (G100)
(4)	Frame
(5)	Ground 100 (G100)

Figure 2:

Auxiliary Battery Relay


(1)	Auxiliary Battery Relay
(2)	A/C Accumulator
(3)	A/C Compressor Low Pressure Cycling Switch
(4)	Inner Wheel Well
(5)	Engine Coolant Level Switch Electrical Connector
(6)	Mass Air Flow (MAF) Sensor
(7)	Air Cleaner Assembly
(8)	Engine Coolant Recovery Reservoir
(9)	Auxiliary Battery Relay Electrical Connector

Figure 3:

Engine Wiring Harness Junction Block


(1)	Engine Wiring Harness Junction Block Bracket
(2)	Inflatable Restraint Harness
(3)	Radiator Support
(4)	Inflatable Restraint Electrical Connector (IP) (C103)
(5)	Inflatable Restraint Electrical Connector (Sensor) (C103)
(6)	LH Battery Tray
(7)	Engine Wiring Harness Junction Block Bracket
(8)	Engine Wiring Harness Junction Block Bracket

Figure 4:

Engine Wiring Harness Junction Block Connectors to Engine Wiring Junction Block


(1)	Engine Wiring Harness Junction Block
(2)	C-4 (GRN)
(3)	C-3 (RED)
(4)	Engine Wiring Junction Block Bracket
(5)	LH Inner Fender (Shield)
(6)	LH Inner Fender
(7)	C-1 (LT GRY)
(8)	C-2 (BLK)

Figure 5:

Engine Wiring Harness Junction Block-C1 (LT GRY) and C6 (BRN)


(1)	Engine Wiring Harness Junction Block
(2)	C7 (BLK) Cavity
(3)	Engine Wiring Harness Junction Block Bracket
(4)	C6 (BRN)
(5)	Instrument Panel (IP) Harness
(6)	C1 (LT GRY)

Figure 6:

Engine Wiring Harness Junction Block-C2 (BLK) and C5 (BLK)


(1)	C2 (BLK)
(2)	Engine Wiring Harness Junction Block
(3)	Engine Wiring Harness Junction Block Bracket
(4)	C5 (BLK)
(5)	Engine Harness

Figure 7:

Engine Wiring Harness Junction Block-C3 (RED) and C8 (LT GRY)


(1)	C3 (RED)
(2)	Engine Wiring Harness Junction Block
(3)	C8 (LT GRY)
(4)	Engine Wiring Harness Junction Block Bracket
(5)	Chassis Harness

Figure 8:

Engine Wiring Harness Junction Block-C4 and Inlines


(1)	C4 (GRN)
(2)	Instrument Panel (IP) Inline Connectors
(3)	Engine Wiring Harness Junction Block Bracket
(4)	Connector Tether
(5)	IP Harness Inline Connector
(6)	C103 (IP Side)
(7)	C103 (FWD Lamp Side)
(8)	Forward Lamp Inline Connector
(9)	Engine Wiring Harness Junction Block

Figure 9:

Lower LR of the Engine Components (4.8L/5.3L/6.0L)


(1)	Ground 103 (G103)
(1)	Ground 103 (G103)
(2)	Engine Harness- H02S
(3)	HO2 Sensor connector- Bank 1, Sensor 1
(4)	Fuel Line Bracket
(5)	Ground 104 (G104)
(5)	Ground 104 (G104)
(6)	Oil Pressure Sensor Connector
(6)	Oil Pressure Sensor
(7)	Engine Ground Strap (G107)
(8)	TP 1 Battery Cable (G106)

Figure 10:

Lower Left Side of the Engine Components (4.8L/5.3L/6.0L)


(1)	Engine Harness
(2)	Battery Cable Junction Block Bracket
(3)	LH Rocker Cover
(4)	Ground 105 (G105)
(5)	Negative Battery Cable
(6)	Engine Coolant Temperature (ECT) Sensor Connector

Figure 11:

Lower LR of the Engine Components (4.8L/5.3L/6.0L)


(1)	Ground 103 (G103)
(1)	Ground 103 (G103)
(2)	Engine Harness- H02S
(3)	HO2 Sensor connector- Bank 1, Sensor 1
(4)	Fuel Line Bracket
(5)	Ground 104 (G104)
(5)	Ground 104 (G104)
(6)	Oil Pressure Sensor Connector
(6)	Oil Pressure Sensor
(7)	Engine Ground Strap (G107)
(8)	TP 1 Battery Cable (G106)

Figure 12:

Lower RF of the Engine Components (4.3L)


(1)	Ground 105 (G105)
(2)	Crankshaft Position (CKP) Sensor
(3)	Negative Battery Cable
(4)	Engine Oil Level Switch
(5)	Engine Harness
(6)	Positive Battery Cable

Figure 13:

Right Side of the Engine Components (4.3L)


(1)	Coil - Ignition
(2)	Generator
(3)	Ignition Coil Driver
(4)	Generator Connector
(5)	RH Cylinder Head
(6)	Ground 103 (G103)
(7)	Map Sensor Connector
(8)	Map Sensor

Figure 14:

LH Rear View of Engine-4.3L


(1)	Oil Pressure Sensor Connector
(2)	Oil Pressure Sensor
(3)	Ground 104 (G104)
(4)	Engine Ground Strap (G107)
(5)	Engine 4.3L
(6)	Knock Sensor
(7)	Knock Sensor Connector
(8)	Distributor Connector
(9)	Distributor

Figure 15:

Left Rear Underhood-Front of Dash


(1)	Windshield Wiper Motor Module Electrical Connector
(2)	Cruise Control Module (CCM) Connector
(3)	Plenum Panel
(4)	Cruise Control Module
(5)	P100
(6)	Dash Panel
(7)	Cap For Connector, Without Cruise Control
(8)	Cruise Control Module (CCM) Connector
(9)	Harness Pass Through
(10)	Windshield Wiper Motor Module

Figure 16:

Front Drive Axle Harness Routing (K15 Series)


(1)	Vent Tube
(2)	Vent Tube Connection
(3)	Front Axle Actuator/Switch
(4)	Front Axle Actuator/Switch Connector
(5)	Front Drive Axle Assembly (Mount)
(6)	Ground 110 (G110)
(7)	Left Inner Fender

Figure 17:

Front Drive Axle Harness Routing (K25 Series)


(1)	Ground 110 (G110)
(2)	Vent Tube
(3)	Vent Tube Connection
(4)	Front Axle Actuator/Switch
(5)	Front Axle Actuator/Switch Connector
(6)	Left Inner Fender

Figure 18:

RH Upper Instrument Panel


(1)	Instrument Panel
(2)	Ground 200 (G200)
(3)	Ground Stud

Figure 19:

Lower Center of the I/P Components


(1)	Ashtray Lamp Socket
(2)	Bulb
(3)	Ashtray Lamp Shield
(4)	Instrument Panel
(5)	Accessory Power Outlet
(6)	Cigar Lighter Assembly

Figure 20:

I/P Wiring Harness Junction Block


(1)	I/P Wiring Harness Junction Block)
(2)	Instrument Panel (IP)

Figure 21:

HVAC Module Assembly (Connections)


(1)	Recirculation Door Motor Electrical Connector
(2)	Instrument Panel
(3)	Electrical Harness Connector
(4)	Ground 200 (G200)
(5)	Blower Motor Resistor/Relay Assembly
(6)	Blower Motor Resistor/Relay Electrical Connector
(7)	Harness Inline Connector (C296)
(8)	Temperature Door Motor Electrical Connector
(9)	Temperature Door Motor
(10)	Mode Door Motor

Figure 22:

Upper Left of the I/P Components


(1)	Splice Pack 203 (SP203)
(2)	Ground 203 (G203)
(3)	Dash
(4)	A-Pillar

Figure 23:

Left Hand Lower Dash


(1)	Fuse Block Connector
(2)	Body Control Module (BCM) Connector
(3)	Splice Pack 205 (SP205)
(4)	Fuse Block
(5)	Data Link Connector (DLC)
(6)	LH IP Courtesy Lamp
(7)	LH IP Courtesy Lamp Socket
(8)	LH IP Support to Dash
(9)	Left Windshield Pillar Trim Panel

Figure 24:

LH Frame Rail at Body Mount


(1)	Frame
(2)	Electronic Brake Control Module Ground (GNO)
(3)	Manual Selectable Ride Ground (G302)
(4)	Automatic Transfer Case/ABS Ground (G110)

Figure 25:

Driver Side B-Pillar Wiring


(1)	LH B-Pillar
(2)	G305
(3)	LH Body Harness

Figure 26:

Left Side Frame Rail -- Brake Components


(1)	Ground 302 (G302)
(2)	LH Body Mount
(3)	Ground Screw
(4)	Electronic Brake Control Module (EBCM)
(5)	Fuel Tank

Figure 27:

RH "B" Pillar


(1)	Instrument Panel
(2)	C4 (and C3)
(3)	Instrument Panel Wiring Harness Junction Block
(4)	C Pillar
(5)	Ground 306 (G306)
(6)	RH Body Harness
(7)	I/P Harness Inline Connector C208

Figure 28:

Below Driver Seat Components (Driver Power Only)


(1)	Driver Power Seat Harness
(2)	Driver Power Seat Connector
(3)	Driver Power Seat Ground 304 (G304)
(4)	Driver Power Seat Inline Connector
(5)	Harness to IP Electrical Connector
(6)	Harness to IP

Figure 29:

Below Front Seats Components (Both w/Power)


(1)	Driver Power Seat Electrical Connector
(2)	Passenger Power Seat Wiring Harness
(3)	Passenger Power Seat Electrical Connector
(4)	Inline Wiring Connector (IP)
(5)	Power Seat Wiring Harness Connector
(6)	Ground 304 (G304)

Figure 30:

RR of the Cab Components (Regular Cab Pickup)


(1)	Right Rear Speaker Electrical Connection
(2)	Rear Glass
(3)	Rear Window Defogger Grid Electrical Connection
(4)	Rear Window Defogger Grid Electrical Connector
(5)	Rear Inner Body Panel
(6)	Right Rear Speaker and Rear Window Defogger Grid Electrical Harness
(7)	Ground 306 (G306)
(8)	Side (RH) Inner Body Panel
(9)	Access Hole (Panel)
(10)	Right Rear Speaker Electrical Harness Connection

Figure 31:

Fuel Tank and Sensor (Typical)


(1)	Fuel Sender
(2)	Ground 403 (G403)
(3)	Fuel Filler Ground 302 (G-403)
(4)	LH Frame
(5)	Fuel Sender (Typical)

Figure 32:

LR of the Cab Components (Regular Cab Pickup)


(1)	Left Rear Speaker Electrical Connection
(2)	Left Rear Speaker Electrical Harness Connection
(3)	Access Hole (Panel)
(4)	Left Rear Speaker and Rear Window Defogger Grid Electrical Harness
(5)	Left Rear Speaker and Rear Window Defogger Grid Electrical Harness
(6)	Rear Inner Body Panel
(7)	Rear Window Defogger Grid Electrical Connector
(8)	Rear Window Defogger Grid Electrical Connection
(9)	Rear Glass

Figure 33:

Rear HVAC Harness


(1)	Inner Body Side Panel
(2)	Splice Pack 410 (SP410)
(3)	Splice Pack 410A (SP410A)
(4)	Blower Motor Connector
(5)	Auxiliary HVAC Module
(6)	Heater Temperature Sensor
(7)	Mode Door 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)

Figure 34:

Trailer Receptacle


(1)	Platform Assembly Trailer Weight Distribution Hitch
(1)	Platform Assembly Trailer Weight Distribution Hitch
(2)	Trailer Wiring Receptacle
(3)	Trailer Wiring Receptacle Bracket
(3)	Trailer Wiring Receptacle Bracket

Figure 35:

Trailer Wiring Harness


(1)	Trailer Wiring Connector
(2)	Trailer Wiring Receptacle
(3)	Frame
(4)	Trailer Hitch Receiver

Figure 36:

Rear Frame -- Rear Lamp Components


(1)	Rear Lamp Bussing Block Bracket
(2)	Rear Lamp Bussing Block
(3)	Rear Cross Sill
(4)	Rear Lamps Bussing Block Electrical Connector

Figure 37:

LR Frame -- Camper Provision


(1)	Camper Wiring Harness
(2)	Frame
(3)	Camper Wiring Harness Connector