Engine Controls Component Views. Chevrolet Chevy C Cab/Chassis HD (GMT 400) 2005

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2005 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 Engine 🢒 Engine Controls - 8.1L 🢒 Engine Controls Component Views

Figure 1:

Throttle Actuator Control (TAC) Module


(1)	Cowl
(2)	TAC Module Connector C2
(3)	Throttle Actuator Control (TAC) Module
(4)	TAC Connector C1
(5)	Left Side Inner Fender
(6)	Fuse Block - Underhood
(7)	Passthrough P100
(8)	Engine Harness

Figure 2:

Fuse Block - Underhood, PCM, EBCM, and Aux Battery


(1)	Fuse Block - Underhood
(2)	Connectors to PCM
(3)	Powertrain Control Module (PCM)
(4)	Left Side Fender
(5)	EBCM Connector C1
(6)	Auxiliary Battery, if equipped
(7)	EBCM Connector C3
(8)	Electronic Brake Control Module (EBCM)
(9)	Engine Harness

Figure 3:

Throttle Body and EVAP Control


(1)	Engine Harness
(2)	Intake Manifold
(3)	Evaporative Emission (EVAP) Canister Purge Solenoid
(4)	Throttle Position (TP) Sensor
(5)	Throttle Position (TP) Sensor Connector
(6)	Throttle Actuator Control Motor
(7)	Throttle Actuator Control Motor Connector
(8)	Evaporative Emission (EVAP) Canister Purge Solenoid Connector

Figure 4:

Camshaft Position (CMP) Sensor and Knock Sensor (KS) - Left Side


(1)	Camshaft Position (CMP) Sensor
(2)	Knock Sensor (KS) - Left Side

Figure 5:

MAP Sensor, ECT Sensor, and Ignition Coils - Right Side


(1)	Manifold Absolute Pressure (MAP) Sensor
(2)	Engine Harness
(3)	Ignition Coil (IC) - Right Side - Typical
(4)	Connector C149 - Engine Harness
(5)	Engine Coolant Temperature (ECT) Sensor Connector
(6)	ECT Sensor - Engine Harness
(7)	C149 - Right Side Ignition Coil Harness

Figure 6:

Starter and Knock Sensor - Bank 2


(1)	Starter Solenoid Terminal
(2)	Battery Positive Wire for Starter
(3)	Knock Sensor - Bank 2
(4)	Engine Harness

Figure 7:

MAF and IAT Sensor


(1)	Engine Coolant Reservoir
(2)	Engine Harness
(3)	Air Cleaner
(4)	MAF and IAT Sensor Connector
(5)	Battery

Figure 8:

Engine Oil Pressure (EOP) Sensor, G104, and G105


(1)	Engine Oil Pressure (EOP) Sensor
(2)	Engine Oil Pressure (EOP) Sensor Connector
(3)	Ground G104
(4)	Ground G105
(5)	Engine Harness

Figure 9:

Crankshaft Position (CKP) Sensor and Engine Oil Pressure (EOP) Sensor


(1)	Engine Oil Pressure (EOP) Sensor
(2)	Crankshaft Position (CKP) Sensor

Figure 10:

Manual Transmission


(1)	Engine Wiring Harness
(2)	Breakout to Heated Oxygen Sensor - Bank 2
(3)	Vehicle Speed Sensor
(4)	Backup Lamps Switch
(5)	Heated Oxygen Sensor - Bank 1

Figure 11:

Automatic Transmission


(1)	Breakout to Heated Oxygen Sensor - Bank 2
(2)	Vehicle Speed Sensor/Transmission Output Shaft Speed Sensor
(3)	Connector C122
(4)	Park/Neutral Position Switch C2
(5)	Park/Neutral Position Switch C1
(6)	Park/Neutral Position (PNP) Switch
(7)	Transmission Input Shaft Speed Sensor
(8)	Heated Oxygen Sensor - Bank 1
(9)	Engine Wiring Harness

Figure 12:

Heated Oxygen Sensor (H02S) - Bank 2


(1)	Engine Harness
(2)	Heated Oxygen Sensor - Bank 2
(3)	Transmission - A/T shown, M/T similar
(4)	Heated Oxygen Sensor Connector

Figure 13:

Fuel Tank and G404


(1)	Fuel Pump and Sender Assembly
(2)	Ground G404
(3)	Fuel Tank
(4)	Fuel Pump and Sender Assembly Connector
(5)	Tail Lamps Extension Harness

Figure 14:

Fuel Balance Module - Dual Tanks, and Fuel Filter


(1)	Frame Cross Member
(2)	Fuel Balance Module Connector C1
(3)	Left Rear Cab Mount
(4)	Fuel Balance Pump Relay
(5)	Fuel Filter
(6)	Fuel Balance Module
(7)	Fuel Balance Module Connector C2

Figure 15:

Auxiliary Fuel Tank and Fuel Pump - Secondary - Dual Tank Option


(1)	Left Tail Lamp Assembly
(2)	Tail Lamp Extension Harness
(3)	Fuel Pump - Secondary
(4)	Fuel Pump - Secondary Connector
(5)	Fuel Level Sensor - Secondary Assembly
(6)	Fuel Level Sensor - Secondary Connector
(7)	Auxiliary Fuel Tank

Figure 16:

Accelerator Pedal Position (APP) Sensor


(1)	IP Harness
(2)	Accelerator Pedal Position (APP) Sensor

Figure 17:

Data Link Connector (DLC)


(1)	Data Link Connector (DLC)

Figure 18:

Theft Deterrent Control Module and DRL Diode


(1)	IP Harness
(2)	Daytime Running Lamps (DRL) Diode Connector
(3)	DRL Diode
(4)	Theft Deterrent Control Module Connector
(5)	Theft Deterrent Control Module

Figure 19:

EVAP Canister and PCM


(1)	Evaporative Emission (EVAP) Canister
(2)	Powertrain Control Module (PCM)