Harness Routing Views. Pontiac Grand Prix 2003

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2003 🢒 Grand Prix 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Harness Routing Views

Figure 1:

Front of Vehicle


(1)	G101
(2)	Fog Lamp-LF, Connector
(3)	C141
(4)	Forward Lamp Harness
(5)	Ambient Air Temperature Sensor, Connector
(6)	Horn Assembly, Connector
(7)	C142
(8)	Fog Lamp-RF, Connector
(9)	Fuse Block-Underhood, C3

Figure 2:

Cooling Fan Harness Routing View - 3.1L


(1)	C105
(2)	Cooling Fan - Right
(3)	Cooling Fan - Left

Figure 3:

Cooling Fan Harness Routing View - 3.8L


(1)	Cooling Fan - Left
(2)	C105
(3)	Cooling Fan - Right

Figure 4:

Left Side of Engine Compartment


(1)	C101
(2)	C103
(3)	C181
(4)	Cruise Control Module (CCM)

Figure 5:

Right Front of Engine Compartment


(1)	Battery Positive Terminal
(2)	Battery Negative Terminal
(3)	Battery Positive Cable Connection to Fuse Block-Underhood
(4)	Fuse Block-Underhood
(5)	G100

Figure 6:

Below Battery Tray, Lower Right Side of Engine Compartment


(1)	C120

Figure 7:

Right Side of Engine Compartment


(1)	Fuse Block-Underhood, C2
(2)	C120
(3)	Fuse Block-Underhood, C3
(4)	C142

Figure 8:

Top Rear of Engine - 3.1L


(1)	C102
(2)	Heated Oxygen Sensor HO2S Sensor 1
(3)	Ignition Control Module (ICM) C2
(4)	Ignition Control Module (ICM) C3

Figure 9:

Top Front Side of Engine -- RPO L67


(1)	Idle Air Control (IAC) Valve
(2)	Throttle Position (TP) Sensor
(3)	Mass Air Flow (MAF) Sensor Connector
(4)	Intake Air Temperature (IAT) Sensor Connector
(5)	Supercharger Boost Control Solenoid
(6)	Fuel Injector 5
(7)	Fuel Injector 3
(8)	Fuel Injector 1
(9)	C110
(10)	C126

Figure 10:

Top Right of Engine -- RPO L36,L67


(1)	Ignition Coils
(2)	Ignition Control Module (ICM)
(3)	G111
(4)	Ignition Control Module (ICM) Wiring Harness

Figure 11:

Lower Right Rear of Engine -- RPO L36,L67


(1)	Engine Harness
(2)	Engine Oil Pressure (EOP) Switch
(3)	Vehicle Speed Sensor (VSS)
(4)	C125

Figure 12:

Lower Left Front of Engine -- RPO L36, L67


(1)	Battery Positive Cable
(2)	Fusible Link
(3)	G113
(4)	Negative Battery Cable
(5)	Starter
(6)	Solenoid Start Terminal S
(7)	Engine Oil Level Switch
(8)	Knock Sensor (KS) Bank 1

Figure 13:

Lower Left Side of Engine Compartment -- RPO L36


(1)	C113
(2)	Park/Neutral Position (PNP) Switch C1
(3)	Park/Neutral Position (PNP) Switch C2
(4)	Magnasteer Actuator, Connector
(5)	Electronic Brake Control Module (EBCM), C1
(6)	C101

Figure 14:

Lower Left Side of Engine Compartment


(1)	Park/Neutral Position (PNP) Switch, C1
(2)	Park/Neutral Position (PNP) Switch, C2
(3)	Electronic Brake Control Module (EBCM), C1
(4)	C181
(5)	C103
(6)	C101
(7)	A/C Refrigerant Pressure Sensor, Connector
(8)	Wheel Speed Sensor (WSS) - LF, Connector
(9)	G113
(10)	Negative Battery Cable
(11)	G117
(12)	C113

Figure 15:

Below Steering Column


(1)	C205
(2)	C215
(3)	C216
(4)	C201
(5)	G205

Figure 16:

Left Side of Brake Pedal Bracket


(1)	G205
(2)	P101

Figure 17:

Right Side of the Brake Pedal Bracket


(1)	G201

Figure 18:

Lower Center of Instrument Panel -- w/o D55


(1)	C242
(2)	Cigar Lighter Jumper Harness
(3)	Cigar Lighter, w/o RPO D55
(4)	Ashtray

Figure 19:

Center of Instrument Panel


(1)	C216
(2)	Inflatable Restraint IP Module

Figure 20:

Behind Instrument Panel-Right Side


(1)	Rear Window Defogger Relay
(2)	Retained Accessory Power (RAP) Relay
(3)	I/P Courtesy Lamp-Right
(4)	C204
(5)	C290
(6)	C200
(7)	Fuse Block-I/P
(8)	G200

Figure 21:

Power Sunroof Component Views


(1)	Power Sunroof
(2)	Sunroof Module, C1
(3)	Sunroof Module
(4)	Sunroof Module, C2
(5)	Sunroof Motor
(6)	C398
(7)	Sunroof Motor, C2

Figure 22:

Floor Console


(1)	Automatic Transmission Shift Lock Actuator, Connector
(2)	Automatic Transmission Shift Lock Actuator
(3)	C325
(4)	Automatic Transaxle Shift Lever Position Indicator
(5)	S374
(6)	A/T Shift Lock Control Solenoid, Connector
(7)	C240
(8)	Heated Seat Switch - Driver, Connector
(9)	Auxiliary Power Outlet - Console, Connector

Figure 23:

Front Seats


(1)	C311

Figure 24:

Cross Body Harness Routing


(1)	C311
(2)	C325

Figure 25:

Right Side of Passenger Compartment


(1)	G302
(2)	Inflatable Restraint Sensing and Diagnostic Module (SDM)

Figure 26:

Right Rear of Passenger Compartment


(1)	C405

Figure 27:

OnStar System


(1)	Roof Harness
(2)	Onstar Keypad
(3)	Inside Rearview Mirror
(4)	Cellular Telephone Antenna
(5)	C393
(6)	Global Positioning Satellite (GPS) Antenna
(7)	Vehicle Interface Unit (VIU) and Vehicle Communications Unit (VCU)
(8)	OnStar Jumper
(9)	C391

Figure 28:

Left Side of Rear Compartment


(1)	Speaker - LR, Connector
(2)	Speaker - LR Subwoofer, Connector
(3)	Evaporative Emission (EVAP) Canister Vent Solenoid, Connector
(4)	P425
(5)	C423
(6)	Cellular Telephone Antenna Coaxial Cable Connector
(7)	Global Positioning Satellite (GPS) Antenna Coaxial Cable Connector

Figure 29:

Right Side of Rear Compartment


(1)	Rear Compartment Courtesy Lamp
(2)	C390
(3)	C395
(4)	C400
(5)	Speaker RR Subwoofer, Connector (RPO U85)
(6)	C430

Figure 30:

Inside Rear Compartment Lid


(1)	Rear Compartment Courtesy Lamp Switch, Connector
(2)	Rear Compartment Lid Lock Release Actuator, Connector
(3)	Rear Compartment Key Cylinder Lock Switch, Connector (W/UA6)
(4)	Rear Deck Lid Harness
(5)	C430

Figure 31:

Rear of Vehicle


(1)	C400
(2)	Tail/Stop and Turn Signal Lamp-Right
(3)	Backup Lamp-Right
(4)	Marker Lamp-RR
(5)	P400
(6)	License Lamp
(7)	Tail/Stop and Turn Signal Lamp-Left
(8)	Backup Lamp-Left
(9)	Marker Lamp-LR

Figure 32:

Left Front Door


(1)	Window Switch-Driver, C1
(2)	Door Lock Switch-Driver, Connector
(3)	Outside Rearview Switch, Connector
(4)	Outside Rearview Mirror, LH, Inline Connector
(5)	P500
(6)	C301
(7)	Speaker-Left Front Door, Connector
(8)	Window Motor-Driver, Connector
(9)	Lock Cylinder Switch-Driver, Connector
(10)	Door Lock-Driver, C1
(11)	Door Lock-Driver, C2
(12)	Window Switch-Driver, C2

Figure 33:

Right Rear Door, Left Rear Similar


(1)	Door Lock-RR, C1
(2)	Door Lock-RR, C2
(3)	C356
(4)	P800
(5)	Window Motor-RR, Connector
(6)	Window Switch-RR, Connector

Figure 34:

Left Side of Passenger Compartment


(1)	C355
(2)	C301
(3)	G301