Power and Grounding Component Views. GMC Truck GMC C Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Power and Grounding Component Views

Figure 1:

G100


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

Fuse Block - Underhood


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

Figure 4:

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 5:

Fuse Block-Underhood-C1 and C6


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

Figure 6:

Fuse Block-Underhood-C2 and C5


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

Figure 7:

Fuse Block-Underhood-C3 and C8


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

Figure 8:

Fuse Block-Underhood-C4 and C103


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

Figure 9:

Lower RF of the Engine Compartment - 4.3L


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

Figure 10:

G103-4.3L


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

Figure 11:

G104-4.3L


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

Figure 12:

G103,G104,G106 and G107-- 4.8L, 5.3L, 6.0L


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

Figure 13:

G102- 4.8L, 5.3L, 6.0L


(1)	Engine Harness
(2)	Battery Cable Junction Block Bracket
(3)	LH Rocker Cover
(4)	G102
(5)	Negative Battery Cable
(6)	Engine Coolant Temperature (ECT) Sensor Connector

Figure 14:

Primary Negative Battery Ground and G105 (6.6L)


(1)	Engine - 6.6L Diesel
(2)	Primary Negative Battery Cable
(3)	Primary Negative Battery Ground
(4)	G105
(5)	Engine Harness

Figure 15:

Auxiliary Negative Battery Ground G106, G102 and G103


(1)	Engine -6.6L Diesel
(2)	Engine Harness
(3)	G106-S102 and S103
(4)	G106-Auxiliary Negative Battery Ground
(5)	G103-Water in Fuel Sensor and FICM
(6)	G102-Fuel Heater and FICM
(7)	Starter Relay terminal
(8)	Starter

Figure 16:

G105 - 8.1L


(1)	Engine - 8.1L
(2)	Knock Sensor (KS) - 2
(3)	Knock Sensor (KS) - 2 Connector
(4)	Engine Harness
(5)	G105 - Engine Harness Ground

Figure 17:

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 18:

Splice S102 and S103-4.3L


(1)	Fuel Injection Module
(2)	Splice S102
(3)	Splice S103
(4)	Engine Harness
(5)	ECT Sensor
(6)	Idle Air Control (IAC) Motor
(7)	TP Sensor

Figure 19:

Splice S104-4.3L


(1)	Splice S104
(2)	Engine Harness
(3)	A/C Accumulator

Figure 20:

Splice S114-4.3L


(1)	Fuel Pump/Oil Pressure Sensor Connector
(2)	Engine Harness
(3)	Splice S114
(4)	Engine Harness Ground
(5)	Ground Strap
(6)	Knock Sensor (KS)
(7)	CMP Sensor Connector

Figure 21:

Splice S103-4.8L,5.3L,6.0L


(1)	Engine Harness
(2)	S103
(3)	Engine-4.8L,5.3L,6.0L

Figure 22:

Splice S104-4.8L,5.3L,6.0L


(1)	Engine Harness
(2)	MAP Sensor
(3)	Splice S104
(4)	Engine-4.8L,5.3L,6.0L
(5)	Knock Sensors Connectors

Figure 23:

Splice S114-4.8L,5.3L,6.0L


(1)	Oil Pressure Sensor
(2)	Camshaft Position Sensor
(3)	G103
(4)	CMP Sensor Connector
(5)	Engine-4.8L,5.3L,6.0L
(6)	G104
(7)	Splice S114

Figure 24:

Splice S199-4.8L,5.3L,6.0L


(1)	Splice S199
(2)	Engine Harness
(3)	Engine -4.8L,5.3L,6.0L

Figure 25:

LR of the Engine Splices (6.6L)


(1)	Engine - Diesel (6.6L)
(2)	S118
(3)	S119

Figure 26:

P100


(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--w/o Cruise Control
(8)	Cruise Control Module (CCM) Electrical Connector
(9)	Harness Pass-Through
(10)	Windshield Wiper Motor Module

Figure 27:

Instrument Panel Harness Routing View


(1)	Instrument Panel
(2)	Instrument Panel Cluster Connector
(3)	Sunload Sensor
(4)	Radio Connectors
(5)	Daytime Running Lamps (DRL) Sensor
(6)	Air Temperature Sensor - Upper
(7)	Passenger Inflatable Restraint Module Connector
(8)	Inflatable Restraint Module Switch Connector
(9)	Inline Connector C206
(10)	Inline Connector C207
(11)	Speaker Connector
(12)	Compartment Lamp Connector
(13)	Fuse Block - Right I/P
(14)	Inline Connector to RH Door Harness
(15)	Inline Connector to RH Body Harness-06 only
(16)	Ashtray Lamp Connector
(17)	HVAC Control Module Connectors
(18)	Cigarette Lighter Connector
(19)	Power Accessary Connectors
(20)	Inline Connector C352
(21)	Inline Connector C307
(22)	Steering Column Connector
(23)	Inline Connector C340
(24)	Body Control Module Connectors
(25)	Cargo/Fog Switch Connector
(26)	Headlamp Switch Connector
(27)	Steering Column -SIR Connector
(28)	Fuse Block
(29)	Data Link Communication Connector
(30)	Inflatable Restraint Sensing And Diagnostic Module (SDM) Connector
(31)	Inline Connector C204
(32)	Inline Connector C200
(33)	Courtesy Lamp - Left
(34)	Relay Block - Body
(35)	Splice Pack SP203
(36)	Inline Connectors to Automatic Transfer Case -C151 C153
(37)	Inline Connector C102- I/P to Chassis Harness
(38)	Inline Connector C103 -I/P to Forward Lamp Harness
(39)	Fuse Block-Underhood
(40)	Instrument Panel Battery Feed Connectors
(41)	Trailer Power Feed Connector
(42)	Cruise Control/Throttle Actuator Connector
(43)	Underhood Lamp Connector
(44)	Speaker - Left Connector
(45)	Inline Connector C204 -I/P to LH Body Harness
(46)	Underhood Lamp Ground
(47)	I/P Harness to Plenum Ground
(48)	Windshield Wiper System Module Connector

Figure 28:

G200


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

Figure 29:

Accessory Power Outlets


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

Figure 30:

Splice Pack SP203 and G203


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

Figure 31:

Splice Pack SP205


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

Figure 32:

G110 and G302


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

Figure 33:

Rear Wheel Steering Module Power,Ground and C116


(1)	Negative Battery Cable
(2)	C116-Rear Wheel Steering Module Ground
(3)	Chassis Harness
(4)	Power Lead-Rear Wheel Steering Module

Figure 34:

Rear Wheel Steering Module Case Ground-G109


(1)	Chassis Harness
(2)	Battery Junction Block
(3)	G109-Case Ground

Figure 35:

Roof Beacon Relay and G304-Pickup


(1)	LH Body Side Inner Panel B Pillar
(2)	G304
(3)	Roof Beacon Relay

Figure 36:

G305


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

Figure 37:

G302


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

Figure 38:

Front Seat Wiring (w/Heat)


(1)	C305
(2)	C399
(3)	Power Seat Wiring Harness to Heated Seat Switch
(4)	C301

Figure 39:

G306


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

Figure 40:

G390 - Crewcab


(1)	Inner Body RH Side Panel
(2)	Rear Window Defogger Grid Connector
(3)	G390

Figure 41:

LH Rear of Passenger Compartment


(1)	Side Inner Body Panel - LH
(2)	Panel Access Hole
(3)	Speaker - LR Connector
(4)	Speaker - LR Connector
(5)	Body Wiring Harness
(6)	Body Wiring Harness
(7)	Rear Glass -Defogger Grid Not Shown
(8)	Rear Defogger Grid Connector
(9)	Rear Defogger Grid Connector

Figure 42:

G401


(1)	Chassis harness
(2)	G401
(3)	Trailer connector

Figure 43:

G403


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

Figure 44:

Junction Block -- Rear Lamps


(1)	Frame
(2)	Junction Block--Rear Lamps
(3)	Junction Block Mounting Bracket