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

VCM, EBCM and Underhood fuse/relay center


Object Number: 209606  Size: MF
(1)Underhood fuse/relay center
(2)Vehicle Control Module (VCM)
(3)Electronic Brake Control Module (EBCM)
Figure 2:

Underhood Fuse/Relay Center


Object Number: 209017  Size: LF
(1)AUX B
(2)AUX A
(3)AUX B (30 amp)
(4)Lighting (50 amp)
(5)AUX A (30 amp)
(6)Battery (50 amp)
(7)Spare (10 amp)
(8)Fuse Puller
(9)Spare (20 amp)
(10)Spare (30 amp)
(11)Ignition A (40 amp)
(12)ECM B (20 amp)
(13)Horn (20 amp)
(14)Air conditioning (10 amp)
(15)Ignition B (50 amp)
(16)Rear defog (30 amp)
(17)Aux fan (30 amp)
(18)ABS (60 amp)
(19)Ignition E (20 amp)
(20)ECM 1 (20 amp)
(21)Engine 1 (20 amp)
(22)Blower (50 amp)
(23)Spare (10 amp)
(24)Stop/Hazard (30 amp)
(25)Spare (10 amp)
(26)Diode 1
(27)Diode 2
(28)Horn relay
(29)Fuel pump relay
(30)A/C relay
(31)A.I.R. relay
(32)Spare
(33)Brake lamp relay
Figure 3:

HO2S


Object Number: 209628  Size: MF
(1)HO2S Bank 1 Sensor 3
(2)HO2S Bank 1 Sensor 1
(3)HO2S Bank 1 Sensor 2 (If Applicable)
(4)HO2S Bank 2 Sensor 1
Figure 4:

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 Solenoid
(5)Fuel Pump/Oil Pressure Switch
(6)Knock Sensor (KS)
(7)Fuel Pressure Connection Valve
(8)Positive Crankcase Ventilation Valve (PCV)
Figure 5:

MAP, EGR, Purge Solenoid, and Throttle Body


Object Number: 209643  Size: SF
(1)Throttle Body
(2)Exhaust Gas Recirculation (EGR) Valve
(3)Generator
(4)Evaporative Emission (EVAP) Canister Purge Valve
(5)Manifold Absolute Pressure (MAP) Sensor
Figure 6:

ECT and EGR


Object Number: 217936  Size: SF
(1)Exhaust Gas Recirculation (EGR) Valve
(2)Engine Coolant Temperature (ECT) Sensor
Figure 7:

Crankshaft Position (CKP) Reluctor Wheel


Object Number: 212697  Size: MF
(1)Crankshaft Position (CKP) Reluctor Wheel
(2)Crankshaft
(3)Engine Block
Figure 8:

MAF, IAT, Air Cleaner Assembly


Object Number: 209645  Size: SF
(1)Air Cleaner Assembly
(2)Intake Air Temperature (IAT)
(3)Mass Air Flow (MAF) Sensor
(4)Air Cleaner Restriction Indicator
Figure 9:

Camshaft Position (CMP) sensor, Knock Sensor (KS), and Fuel Pump/Oil Pressure Switch


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

Enhanced EVAP and PCV


Object Number: 209647  Size: MF
(1)Positive Crankcase Ventilation (PCV) Valve
(2)EVAP Service Port
(3)EVAP Canister
(4)EVAP Canister Purge Solenoid
Figure 11:

Ignition Coil, Ignition Control (IC) Module, MAP, Throttle Body, and Evaporative (EVAP) Canister Purge Valve


Object Number: 212690  Size: LF
(1)EVAP Pipe
(2)Injector Assembly Electrical Connector
(3)Throttle Body
(4)Manifold Absolute Pressure (MAP) Sensor
(5)Ignition Control (IC) Module
(6)Ignition Coil
(7)Evaporative (EVAP) Canister Purge Valve
Figure 12:

Evaporative (EVAP) Canister, EVAP Vent Valve, and Electronic Brake Control Module (EBCM)


Object Number: 212701  Size: MF
(1)Electronic Brake Control Module (EBCM)
(2)Evaporative (EVAP) Vent Valve
(3)Evaporative (EVAP) Canister
(4)Frame
(5)Left Front Wheel House Panel
Figure 13:

Vehicle Speed Sensor (2WD)


Object Number: 209622  Size: SF
(1)Vehicle Speed Sensor (VSS)
Figure 14:

Vehicle Speed Sensor (4WD)


Object Number: 209620  Size: SF
(1)Vehicle Speed Sensor (VSS)
(2)Transfer case
Figure 15:

Fuel Tank, Fuel Tank Pressure Sensor, Fuel Tank Sender Assembly


Object Number: 212688  Size: MF
(1)Fuel Tank
(2)Fuel Tank Pressure Sensor
(3)Fuel Feed Pipe
(4)Fuel Tank Sender Assembly
(5)Vapor Pipe
(6)Fuel Return Pipe