Engine Controls Component Views

Fig 1: Powertrain Control Module (PCM) Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Powertrain Control Module (PCM)
2	C102
3	C101
4	Body Harness
5	Secondary Air Injection Pump Harness
6	S121
7	S113
8	C117
9	Powertrain Control Module (PCM), Connector C1
10	Powertrain Control Module (PCM), Connector C2
11	Engine Harness

Fig 2: Mass Air Flow (MAF) Sensor and Intake Air Temperature (IAT) Sensor

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Intake Air Temperature (IAT) Sensor
2	Air Outlet from Filter
3	Distributor
4	Knock Sensor (KS)
5	Mass Air Flow (MAF) Sensor

Fig 3: Crankshaft Position (CKP) Sensor

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Crankshaft
2	Front Engine Cover
3	Crankshaft Position (CKP) Sensor

Fig 4: Throttle Position (TP) Sensor, Idle Air Control (IAC) Valve, and Positive Crankcase Ventilation (PCV) Valve

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Throttle Position (TP) Sensor
2	Idle Air Control (IAC) Valve
3	Ignition Coil
4	Evaporative Emission (EVAP) Canister Purge Solenoid
5	Engine Oil Pressure (EOP) Switch
6	Knock Sensor (KS)
7	Fuel Pressure Connection Valve
8	Positive Crankcase Ventilation (PCV) Valve

Fig 5: Left Side of the Engine Components (4.3L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Bank 1 Cylinder Head
2	Engine Coolant Temperature (ECT) Sensor

Fig 6: Ignition Coil, Ignition Control Module (ICM), Manifold Absolute Pressure (MAP) Sensor, Throttle Body, and Evaporative Emission (EVAP) Canister Purge Solenoid

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	EVAP Pipe
2	Central Sequential Fuel Injection (Central SFI) Connector
3	Throttle Body
4	Manifold Absolute Pressure (MAP) Sensor
5	Ignition Control Module (ICM)
6	Ignition Coil
7	Evaporative Emission (EVAP) Canister Purge Solenoid

Fig 7: Camshaft Position (CMP) Sensor, Knock Sensor (KS), and Engine Oil Pressure (EOP) Switch

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Camshaft Position (CMP) Sensor
2	Engine Oil Pressure (EOP) Sensor
3	Knock Sensor (KS)

Fig 8: Heated Oxygen Sensors (HO2S)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Heated Oxygen Sensors (HO2S) Bank 1 Sensor 2
2	Heated Oxygen Sensors (HO2S) Bank 1 Sensor 1
3	Heated Oxygen Sensors (HO2S) Bank 2 Sensor 1

Fig 9: Evaporative Emission (EVAP) Canister Vent Solenoid and Canister (4-Door Utility and Pickup)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Evaporative Emission (EVAP) Canister Vent Solenoid
2	Crossmember
3	EVAP Canister
4	Fuel Tank
5	Fuel Pump and Sender Assembly

Fig 10: Fuel Tank Pressure (FTP) Sensor and Fuel Pump and Sender Assembly

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Tank
2	Fuel Tank Pressure (FTP) Sensor Connector
3	Fuel Pump and Sender Assembly Connector
4	Fuel Pump and Sender Assembly