GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Tracker - 2WD 🢒 Brakes 🢒 Antilock Brake System 🢒 Engine Controls Component Views
Figure 1:

Information Sensors/Input Devices
Object Number: 471720 Size: LF
(1)Fuel Tank Pressure Sensor
(2)Fuel Level Sensor
(3)ECT Sensor
(4)CMP Sensor
(5)HO2S 2 (without WU-TWC)
(6)ABS Control Module
(7)HO2S 1
(8)HO2S 2 (with WU-TWC)
(9)PSP Switch (if equipped)
(10)MAF Sensor
(11)IAT Sensor
(12)Electrical Load Diode
(13)TP Sensor
(14)MAP Sensor
(15)CKP Sensor (located behind flywheel/flexplate)
(16)A/C Compressor Control Module
(17)VSS
Figure 2:

PCM Controlled Devices
Object Number: 471742 Size: LF
(1)Malfunction Indicator Lamp (MIL)
(2)Main Relay
(3)Fuel Pump Relay
(4)Ignition Coils
(5)EVAP Canister Purge Valve
(6)EVAP Canister Vent Solenoid
(7)EVAP Tank Pressure Control Solenoid Valve
(8)A/C Condenser Fan Relay
(9)Idle Air Control (IAC) Valve
(10)Exhaust Gas Recirculation (EGR) Valve
(11)Fuel Injectors
Figure 3:

Other Engine Control System Components
Object Number: 471748 Size: LF
(1)Instrument Panel (includes speedometer)
(2)Data Link Connector (DLC)
(3)EVAP Canister
(4)Powertrain Control Module (PCM)
(5)Battery
(6)Noise Filter (ignition system)
Figure 4:

EVAP System Components and Engine Controls
Object Number: 471931 Size: MF
(1)PCV Hose
(2)PCV Breather Hose
(3)Fuel Pressure Regulator
(4)TP Sensor
(5)IAC Valve
(6)EVAP Canister Purge Valve
(7)EVAP Canister
(8)EVAP Canister Vent Solenoid
(9)Fuel Tank Pressure Control Valve
(10)EVAP Tank Pressure Control Solenoid Valve
(11)Fuel Return Hose
(12)Fuel Feed Hose
(13)MAP Sensor
(14)A/T Throttle Cable
(15)Accelerator Control Cable
Figure 5:

ECT Sensor and EGR Valve
Object Number: 468060 Size: MH
(1)EGR Valve
(2)ECT Sensor
(3)Fuel Injector Electrical Harness Connector
(4)Throttle Body Inlet Coolant Line
(5)Throttle Body Outlet Coolant Line
(6)IAC valve
(7)EVAP Canister Purge Valve
(8)TP Sensor
(9)Fuel Lines
(10)Engine Grounds
(11)MAP Sensor
Figure 6:

Ignition System
Object Number: 467906 Size: SH
(1)Ignition Coils
(2)Noise Suppressor
(3)PCM
(4)CMP Sensor
(5)Spark Plugs
Figure 7:

Main Relay and Fuel Pump Relay
Object Number: 468070 Size: SH
(1)Main Relay
(2)Fuel Pump Relay
(3)Junction Box (located above left side hinge pillar trim panel)
Figure 8:

Electrical Load Diode
Object Number: 587746 Size: SH
(1)Electrical Load Diode (taped to wire harness)
(2)HVAC Blower Motor Housing
(3)Wire Harness
(4)Powertrain Control Module (PCM) Bracket
Figure 9:

Fuel Supply System Flow
Object Number: 486504 Size: MF
(1)Fuel Injectors
(2)Fuel Rail
(3)Fuel Pressure Gage (J 34730-1)
(4)Fuel Pressure Gage Adapter (J 41041)
(5)Fuel Pressure Regulator
(6)Fuel Return Pipes/Hoses
(7)Fuel Pump
(8)Fuel Filter
(9)Fuel Feed Pipes/Hoses