GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Powertrain Control Module (PCM)


Object Number: 731893  Size: LF
(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
Figure 2:

Fuse Block - Underhood Assembly and Electronic Brake Control Module (EBCM)


Object Number: 358368  Size: MF
(1)Electronic Brake Control Module (EBCM)
(2)Fuse Block - Underhood Assembly
(3) Front Right Fender
Figure 3:

Mass Air Flow (MAF) Sensor and Intake Air Temperature (IAT) Sensor


Object Number: 246881  Size: MF
(1)Intake Air Temperature (IAT) Sensor
(2)Air Outlet from Filter
(3)Distributor
(4)Knock Sensor (KS)
(5)Mass Air Flow (MAF) Sensor
Figure 4:

Crankshaft Position (CKP) Sensor


Object Number: 235188  Size: MF
(1)Crankshaft
(2)Front Engine Cover
(3)Crankshaft Position (CKP) Sensor
Figure 5:

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


Object Number: 212698  Size: MF
(1)Throttle Position (TP) Sensor
(2)Idle Air Control (IAC) Valve
(3)Ignition Coil
(4)Evaporative (EVAP) Canister Purge Valve
(5)Oil Pressure Switch
(6)Knock Sensor (KS)
(7)Fuel Pressure Connection Valve
(8)Positive Crankcase Ventilation Valve (PCV)
Figure 6:

MAP, Purge Solenoid, and Throttle Body


Object Number: 795250  Size: MF
(1)Throttle Body
(2)Generator
(3)Evaporative Emission (EVAP) Canister Purge Solenoid
(4)Manifold Absolute Pressure (MAP) Sensor
Figure 7:

Left Side of the Engine Components (4.3L)


Object Number: 235186  Size: MF
(1)Bank 1 Cylinder Head
(2)Engine Coolant Temperature (ECT) Sensor
Figure 8:

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


Object Number: 212690  Size: LF
(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
Figure 9:

Camshaft Position (CMP) Sensor, Knock Sensor (KS), and Oil Pressure Switch


Object Number: 212680  Size: MF
(1)Camshaft Position (CMP) Sensor
(2)Oil Pressure Switch
(3)Knock Sensor (KS)
Figure 10:

Heated Oxygen Sensors (HO2S)


Object Number: 430019  Size: MF
(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
Figure 11:

EVAP Canister and EVAP Vent Valve


Object Number: 235181  Size: LF
(1)Evaporative Emissions (EVAP) Vent Solenoid Valve
(2)Crossmember
(3)EVAP Canister
(4)Fuel Tank
(5)Fuel Tank Sender Assembly
Figure 12:

Fuel Tank Pressure Sensor and Fuel Level Sender Assembly


Object Number: 235167  Size: MF
(1)Fuel Tank
(2)Fuel Tank Pressure Sensor Connector
(3)Fuel Level Sender Connector
(4)Fuel Pump and Sender Assembly