Front of Vehicle/Engine Compartment Component Views. GMC Truck TopKick C-Series (Conventional) C4/C5 2009

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Front of Vehicle/Engine Compartment Component Views

Figure 1:

A/C Compressor


(1)	A/C Compressor Clutch
(2)	A/C High Pressure Switch

Figure 2:

Automatic Transmission Fluid Temperature (TFT) Sensor


(1)	Automatic Transmission Fluid Temperature (TFT) Sensor Connector
(2)	Automatic Transmission Fluid Temperature (TFT) Sensor (Allison® LCT)

Figure 3:

Back Left of Engine Compartment


(1)	Hydromax® Fuse (JE3)
(2)	Hydromax® Relay (JE3)
(3)	Brake Fluid Level Switch (JE3)
(4)	Power Brake (P/B) Booster Fluid Flow Switch (JE3)
(5)	X408
(6)	X408
(7)	X404
(8)	X404

Figure 4:

Cab - Front View (GRW)


(1)	Outside Rearview Mirror - Passenger
(2)	Headlamp - High/Low Beam - Right
(3)	Clearance Lamp - Right
(4)	Identification (ID) Lamp - Right
(5)	Identification (ID) Lamp - Center
(6)	Identification (ID) Lamp - Left
(7)	Clearance Lamp - Left
(8)	Outside Rearview Mirror - Driver
(9)	Park/Turn Signal Lamp - Left Front
(10)	Headlamp - High/Low Beam - Left
(11)	Park/Turn Signal Lamp - Right Front

Figure 5:

Cab - Front View (V22)


(1)	Outside Rearview Mirror - Passenger
(2)	Headlamp - High Beam - Right
(3)	Clearance Lamp - Right
(4)	Identification (ID) Lamp - Right
(5)	Identification (ID) Lamp - Center
(6)	Identification (ID) Lamp - Left
(7)	Clearance Lamp - Left
(8)	Headlamp - High Beam - Left
(9)	Outside Rearview Mirror - Driver
(10)	Park/Turn Signal Lamp - Left Front
(11)	Headlamp - Low Beam - Left
(12)	Headlamp - Low Beam - Right
(13)	Park/Turn Signal Lamp - Right Front

Figure 6:

Chassis Front Engine Compartment


(1)	X108
(2)	X106
(3)	G100
(4)	Wheel Speed Sensor (WSS) - Right Front
(5)	X100
(6)	X126
(7)	Power Brake (P/B) Booster Fluid Flow Switch (JE3)
(8)	Brake Fluid Level Switch (JE3)
(9)	Hydromax Relay (JE3)
(10)	Water in Fuel Sensor
(11)	X410
(12)	Electronic Brake Control Module (EBCM)
(13)	Wheel Speed Sensor (WSS) - Left Front
(14)	ABS Relay (JE4)
(15)	X107

Figure 7:

Front Bottom of Vehicle


(1)	Inflatable Restraint Front End Discriminating Sensor Connector
(2)	Inflatable Restraint Front End Discriminating Sensor (AJ3/AK5)
(3)	Horns

Figure 8:

Front of Engine Compartment


(1)	A/C Accumulator/Dehydrator (C60)
(2)	A/C Low Pressure Switch (C60)
(3)	Engine Chassis Harness
(4)	X105
(5)	A/C Compressor Clutch Relay (C60)

Figure 9:

Front of Vehicle


(1)	Chassis Harness
(2)	Vacuum Pump
(3)	Coolant Level Switch Connector
(4)	Engine Fan Harness
(5)	Vacuum Pump Connector
(6)	X106
(7)	X106

Figure 10:

Left Front of the Vehicle (LF6/LF8/JE4)


(1)	Electronic Brake Control Module (EBCM)
(2)	Data Link Resistor 2

Figure 11:

I/P Harness - Left Rear Engine Compartment


(1)	Park Brake Switch (JEA)
(2)	Differential Lock Switch
(3)	Windshield Wiper Motor
(4)	X150
(5)	X151 (AEL)

Figure 12:

Right Rear of Engine Compartment - ECM/TCM


(1)	Engine Control Module (ECM)
(2)	Transmission Control Module (TCM)

Figure 13:

Righ Rear of Engine Compartment - Fuse Block - Underhood


(1)	Engine Harness
(2)	Fuse Block - Underhood
(3)	Remote Battery Stud
(4)	Positive Battery Cable

Figure 14:

Right Rear of Engine Compartment - PCM/TAC


(1)	Powertrain Control Module (PCM) Connector
(2)	Powertrain Control Module (PCM)
(3)	Throttle Actuator Control (TAC) Module
(4)	I/P Harness
(5)	Throttle Actuator Control (TAC) Module - X1
(6)	Throttle Actuator Control (TAC) Module - X2
(7)	Engine Harness

Figure 15:

Right Rear of Engine Compartment - Rear View (L18)


(1)	X101
(2)	X124
(3)	Engine Harness
(4)	X124
(5)	I/P Harness
(6)	X101

Figure 16:

Under the Hood


(1)	Engine Chassis Harness
(2)	Mass Air Flow (MAF) Sensor

Figure 17:

Wiper Motor, Fluid Pump, Fluid Level Switch, Blower Motor Assembly


(1)	Blower Motor Resistor Assembly Connector
(2)	Blower Motor Resistor Assembly
(3)	Wiper Motor
(4)	Windshield Washer Fluid Pump
(5)	Windshield Washer Fluid Level Switch
(6)	Blower Motor