Power and Grounding Component Views. GMC Truck Yukon

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon - 2WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 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 Low Pressure Switch
(4)	Inner Wheel Well
(5)	Engine Coolant Level Switch Connector
(6)	Mass Air Flow (MAF) Sensor
(7)	Air Cleaner Assembly
(8)	Engine Coolant Recovery Reservoir
(9)	Auxiliary Battery Relay Electrical Connector

Figure 3:

Left Side of the Engine Compartment Components


(1)	Junction Block-Underhood 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)	Junction Block-Underhood Bracket
(8)	Junction Block-Underhood Bracket

Figure 4:

Junction Block-Underhood Connectors


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

Figure 5:

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


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

Figure 6:

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


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

Figure 7:

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


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

Figure 8:

Junction Block-Underhood-C4 and Inlines


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

Figure 9:

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 10:

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 11:

Lower LR of the 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 (KS)
(7)	KS Connector
(8)	Distributor Connector
(9)	Distributor

Figure 12:

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 13:

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 14:

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 15:

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 16:

RH Upper Instrument Panel


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

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:

Upper Left of the I/P Components


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

Figure 19:

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 20:

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 21:

Driver Side B-Pillar Wiring


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

Figure 22:

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 23:

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 24:

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 25:

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 26:

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 27:

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 28:

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 29:

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 30:

Trailer Wiring Harness


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

Figure 31:

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 32:

LR Frame -- Camper Provision


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