Power and Grounding Component Views. GMC Truck Yukon XL

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2003 🢒 Yukon XL - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 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:

Fuse Block-Underhood


(1)	Fuse Block-Underhood Bracket
(2)	I/P Harness
(3)	Radiator Support
(4)	Inline Connector C103 or C104-I/P Harness Side
(5)	Inline Connector C103 or C104-Forward Lamp Harness Side
(6)	LH Battery Tray
(7)	Fuse Block-Underhood Bracket
(8)	Fuse Block-Underhood Bracket

Figure 3:

Fuse Block-Underhood Connectors


(1)	Fuse Block-Underhood
(2)	C4 (GRN)
(3)	C3 (RED)
(4)	Fuse Block-Underhood Bracket
(5)	LH Inner Fender (Shield)
(6)	LH Inner Fender
(7)	C1 (LT GRY)
(8)	C2 (BLK)

Figure 4:

Fuse Block-Underhood-C1 (LT GRY) and C6 (BRN)


(1)	Fuse Block-Underhood
(2)	C7 (BLK) Cavity
(3)	Fuse Block-Underhood Bracket
(4)	C6 (BRN)
(5)	I/P Harness
(6)	C1 (LT GRY)

Figure 5:

Fuse Block-Underhood-C2 (BLK) and C5 (BLK)


(1)	C2 (BLK)
(2)	Fuse Block-Underhood
(3)	Fuse Block-Underhood Bracket
(4)	C5 (BLK)
(5)	Engine Harness

Figure 6:

Fuse Block-Underhood-C3 (RED) and C8 (LT GRY)


(1)	C3 (RED)
(2)	Fuse Block-Underhood
(3)	C8 (LT GRY)
(4)	Fuse Block-Underhood Bracket
(5)	Chassis Harness

Figure 7:

Fuse Block-Underhood-C4 and Inlines


(1)	C4 (GRN)
(2)	I/P Inline Connectors
(3)	Fuse Block-Underhood Bracket
(4)	Connector Tether
(5)	I/P Harness Inline Connector
(6)	C103 (I/P Side)
(7)	C103 (FWD Lamp Side)
(8)	Forward Lamp Inline Connector
(9)	Fuse Block-Underhood

Figure 8:

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 9:

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 102 (G102)
(5)	Negative Battery Cable
(6)	Engine Coolant Temperature (ECT) Sensor Connector

Figure 10:

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 11:

G102 - 8.1L


(1)	Engine - 8.1L
(2)	Knock Sensor (KS) - 2
(3)	Knock Sensor (KS) - 2 Connector
(4)	Engine Harness
(5)	G102 - Engine Harness Ground

Figure 12:

G104-8.1L


(1)	Engine-8.1L
(2)	EGR Valve
(3)	Engine Oil Pressure (EOP) Sensor
(4)	Engine Ground Strap
(5)	G104-Engine Harness Ground

Figure 13:

LR of the Engine Comparment -- Bulkhead Components


(1)	Windshield Wiper Motor Module Electrical Connector
(2)	Cruise Control Module (CCM) Electrical Connector
(3)	Plenum Panel
(4)	Cruise Control Module (CCM)
(5)	Pass-Through 100 (P100)
(6)	Dash Panel
(7)	Cap For Connector (Without Cruise Control)
(8)	Cruise Control Module (CCM) Electrical Connector
(9)	Harness Pass-Through
(10)	Windshield Wiper Motor Module

Figure 14:

G110 and G302


(1)	Left Front Body Mount
(2)	G110
(3)	G302 (10 Series)

Figure 15:

RH Upper Instrument Panel


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

Figure 16:

Lower RF of the Passenger Compartment


(1)	C222
(2)	C315 (AJ7)
(3)	Body Harness
(4)	C209

Figure 17:

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 18:

Fuse Block- Right I/P


(1)	Fuse Block-Right I/P
(2)	Instrument Panel

Figure 19:

HVAC Module Assembly (Connections)


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

Figure 20:

I/P Harness Routing - Left Side of I/P Console


(1)	C202 I/P Harness to Brake/Clutch Harness
(2)	C214 I/P Harness to Headliner Harness (w/UE1/U42)
(3)	C214 I/P Harness to Headliner Harness (w/UE1/U42)
(4)	G203 (1851)
(5)	C203 I/P to Left Front Door Harness (w/JF4)
(6)	C221 I/P Harness to Body Harness
(7)	C204 I/P Harness to Body Harness
(8)	Splice Pack SP250 (w/UQ7)
(9)	C201 I/P Harness to Steering Column Harness
(10)	C275 I/P Harness to Inflatable Restraint Steering Wheel Module
(11)	Splice Pack SP205

Figure 21:

Upper Left of the I/P Components


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

Figure 22:

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 23:

Steering Wheel and Column Sub-System Components


(1)	Steering Wheel Audio Controls - Left
(2)	Passlock Sensor Connector
(3)	Ignition Key Alarm Switch
(4)	Ignition Lock Cylinder Control Actuator
(5)	Ignition Lock Cylinder Control Actuator Connector
(6)	Ignition Switch
(7)	Ignition Key Cylinder
(8)	Steering Wheel Audio Controls - Right
(9)	Horn Switch
(10)	Steering Wheel Driver Information (DIC) Controls - Right
(11)	C277
(12)	Steering Wheel Driver Information Center (DIC) Controls - Left
(13)	Turn Signal/Multifunction Switch

Figure 24:

Left Side Frame Rail -- Grounds


(1)	Frame
(2)	Electronic Brake Control Module (EBCM) 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)	Junction Block-I/P
(4)	RT-B-Pillar
(5)	Ground 306 (G306)
(6)	RH Body Harness
(7)	I/P Harness Inline Connector C208

Figure 28:

G305


(1)	G305
(2)	LH B-Pillar
(3)	C305
(4)	Inflatable Restraint Sensing and Diagnostic Module (SDM)

Figure 29:

G304 and G306


(1)	C396
(2)	G306
(3)	G304
(4)	C399
(5)	RH B-Pillar

Figure 30:

Emergency Light Relay and G305-Utility/Crewcab


(1)	Emergency Roof Lamp Harness
(2)	Roof Beacon Relay
(3)	G305
(4)	B Pillar-LH Side

Figure 31:

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 32:

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 33:

RR Side of the Passenger Compartment Components (Suburban/Yukon XL w/Auxiliary HVAC -- 2 of 2)


(1)	Inner Body Side Panel
(2)	Splice Pack 410 (SP410)
(3)	Splice Pack 410A (SP410A)
(4)	Blower Motor-Auxiliary
(5)	HVAC Module-Rear Auxiliary
(6)	Air Temperature Sensor-Lower Auxiliary
(7)	Mode Actuator 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