GM Service Manual Online
For 1990-2009 cars only

Information Sensors/Input Devices


Object Number: 1656397  Size: LF
(1)Power Steering Pressure Switch
(2)Heated Oxygen Sensor 1 - HO2S 1
(3)Heated Oxygen Sensor 2- HO2S 2
(4)EVAP Vacuum Leak Pump Assembly - AWD, includes Fuel Tank Pressure (FTP) Sensor
(5)EVAP Vacuum Leak Pump Assembly - FWD, includes Fuel Tank Pressure (FTP) Sensor
(6)Accelerator Pedal Position (APP) Sensor - FWD
(7)Engine Coolant Temperature (ECT) Sensor
(8)Mass Air Flow (MAF) Sensor
(9)Camshaft Position (CMP) Sensor
(10)Throttle Position (TP) Sensor - AWD or Throttle Actuator Control (TAC) Module - FWD, includes TP Sensor 1 and TP Sensor 2
(11)PNP Switch, Automatic Transmission only
(12)Knock (KS) Sensor
(13)Crankshaft Position (CKP) Sensor

PCM Controlled Devices


Object Number: 1656401  Size: LF
(1)EVAP Purge Solenoid
(2)Malfunction Indicator Lamp (MIL)
(3)EVAP Vacuum Leak Pump Assembly - AWD, includes EVAP Vent Solenoid
(4)EVAP Vacuum Leak Pump Assembly - FWD, includes EVAP Vent Solenoid
(5)Circuit Opening Relay - Fuel Pump Relay
(6)Throttle Actuator Control (TAC) Motor - FWD
(7)Idle Air Control (IAC) Valve - AWD
(8)Camshaft Position (CMP) Actuator Solenoid
(9)Fuel Injector
(10)Ignition Coil

Other Components


Object Number: 1656403  Size: LF
(1)Powertrain Control Module (PCM)
(2)Data Link Connector (DLC)
(3)EVAP Canister and Canister Air Filter, AWD
(4)EVAP Canister and Canister Air Filter, FWD
(5)Noise Filter, for Ignition System
(6)EFI Relay

Crankshaft Position (CKP) Sensor and Power Steering Pressure (PSP) Switch


Object Number: 392655  Size: MF
(1)Generator
(2)Crankshaft Position (CKP) Sensor
(3)Power Steering Pump
(4)Power Steering Pressure (PSP) Switch

ECT Sensor and Noise Filter


Object Number: 851358  Size: SH
(1)Engine Coolant Temperature (ECT) Sensor
(2)Noise Filter, for ignition system
(3)Upper Radiator Hose
(4)Engine Ground G104 and G105

Fuse Block - Underhood


Object Number: 1457628  Size: MF
(1)EFI Relay
(2)Main Fuse
(3)EFI Fuse
(4)Fuse Block - Underhood

Instrument Panel (I/P) Components


Object Number: 848018  Size: MF
(1)Malfunction Indicator Lamp (MIL), Check Engine Lamp
(2)Powertrain Control Module (PCM)
(3)Fuse Block - Instrument Panel (I/P)
(4)Data Link Connector (DLC)

Top View of Fuse Block - Instrument Panel (I/P)


Object Number: 847988  Size: SH
(1)Circuit Opening Relay, Fuel Pump Relay
(2)Fuse Block - Instrument Panel (I/P)

Camshaft Position (CMP) Actuator Solenoid Valve and Filter


Object Number: 622392  Size: SH
(1)Camshaft Position (CMP) Actuator Solenoid Valve
(2)Camshaft Position (CMP) Actuator Solenoid Oil Filter

Ignition Coils


Object Number: 621682  Size: SH
(1)Ignition Coil 1
(2)Ignition Coil 2
(3)Ignition Coil 3
(4)Ignition Coil 4