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

VCM, Connector Ends, IAT, MAF,Starter Relay, A/C Relay, Fuel Pump Relay


Object Number: 239806  Size: MF
(1)VCM connector, black (C4)
(2)VCM connector, gray, clear white, (C3)
(3)Vehicle Control Module (VCM)
(4)Intake Air Temperature Sensor (IAT)
(5)Mass Air Flow Sensor (MAF)
(6)VCM connector,blue (C1)
(7)VCM connector red (C2)
(8)Starter Relay
(9)A/C Relay
(10)Fuel Pump Relay
Figure 2:

Fuel Balance Module and Fuel Balance Pump (dual tanks only)


Object Number: 209617  Size: SF
(1)Fuel balance pump
(2)Fuel balance pump module
Figure 3:

Vehicle Speed Sensor (2WD)


Object Number: 209622  Size: SF
(1)Vehicle Speed Sensor (VSS)
Figure 4:

Idle Air Control, Manifold Absolute Pressure, Engine Coolant Temperature, Throttle Position Sensors


Object Number: 214402  Size: LF
(1)Idle Air Control (IAC) Valve Motor
(2)Engine Coolant Temperature (ECT) Sensor
(3)Manifold Absolute Pressure (MAP) Sensor
(4)Crankshaft Position (CKP) Sensor
(5)Throttle Position (TP) Sensor
Figure 5:

Ignition Control Module,Camshaft Position Sensor,Knock Sensor


Object Number: 214403  Size: MF
(1)Ignition Control Module
(2)Camshaft Position Sensor
(3)Engine Oil Pressure Switch
Figure 6:

Canister Purge, Linear EGR, Knock Sensor


Object Number: 214405  Size: LF
(1)Linear Exhaust Gas Recirculation (EGR) Valve
(2)Canister Purge Valve Solenoid
Figure 7:

Heated Oxygen Sensors


Object Number: 404297  Size: SF
(1)HO2S Bank 2 Sensor 2
(2)HO2S Bank 1 Sensor 2
(3)HO2S Bank 1 Sensor 1
(4)HO2S Bank 2 Sensor 1