GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2004
🢒
Optra
🢒
Engine
🢒 Engine Controls - 2.0L (L34 GMDAT)
Engine
All Component Locator
Engine Controls Component Views
All Description and Operation
Air Intake System Description
Crankcase Ventilation System Description
Electronic Ignition (EI) System Description
Engine Control Module Description
Evaporative Emission Control System Description
Exhaust Gas Recirculation (EGR) System Description
Fuel System Description
Knock Sensor (KS) System Description
All Special Tools and Equipment
Special Tools
All Visual Identification
Engine Control Module Connector End Views
Engine Controls Connector End Views
Cleaning, Inspection, and Adjustment
Crankshaft Position System Variation Learn
Fuel System Cleaning
Idle Learn
Spark Plug Inspection
Spark Plug Wire Inspection
Diagnostic Procedures
Alcohol/Contaminants-in-Fuel Diagnosis
Backfire
Crankcase Ventilation System Inspection/Diagnosis
Cuts Out, Misses
Detonation/Spark Knock
Diagnostic Starting Point - Engine Controls
Diagnostic System Check - Engine Controls
Dieseling, Run-On
Electronic Ignition (EI) System Diagnosis
Engine Cranks But Does Not Run
Fuel Injector Balance Test with Special Tool
Fuel Injector Circuit Diagnosis
Fuel Injector Solenoid Coil Test
Fuel Pump Electrical Circuit Diagnosis
Fuel System Diagnosis
Fuel Tank Leak Test
Hard Start
Hesitation, Sag, Stumble
Idle Air Control (IAC) System Diagnosis
Inspection/Maintenance (I/M) Catalyst System Set Procedure
Inspection/Maintenance (I/M) Complete System Set Procedure
Inspection/Maintenance (I/M) Exhaust Gas Recirculation (EGR) System Set Procedure
Inspection/Maintenance (I/M) System Check
Inspection/Maintenance (I/M) System DTC Table
Inspection/Maintenance Evaporative Emission System Set
Inspection/Maintenance Heated Oxygen Sensor Heater System Set
Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set
Intermittent Conditions
Lack of Power, Sluggishness, or Sponginess
Main Relay Circuit Diagnosis
Malfunction Indicator Lamp (MIL) Always On
Malfunction Indicator Lamp (MIL) Inoperative
Poor Fuel Economy
Poor Fuel Fill Quality
Rough, Unstable, or Incorrect Idle and Stalling
Surges/Chuggles
Symptoms - Engine Controls
Diagnostic Trouble Codes
Diagnostic Trouble Code (DTC) List
DTC P0106
DTC P0107
DTC P0108
DTC P0112
DTC P0113
DTC P0115
DTC P0117
DTC P0118
DTC P0122
DTC P0123
DTC P0125
DTC P0128
DTC P0131
DTC P0132
DTC P0133
DTC P0134
DTC P0135
DTC P0137
DTC P0138
DTC P0140
DTC P0141
DTC P0171
DTC P0172
DTC P0201, P0202, P0203, or P0204
DTC P0217
DTC P0300
DTC P0315
DTC P0317
DTC P0324
DTC P0327
DTC P0336
DTC P0337
DTC P0341
DTC P0342
DTC P0351 or P0352
DTC P0401
DTC P0402
DTC P0404
DTC P0405
DTC P0406
DTC P0420
DTC P0441
DTC P0442
DTC P0443
DTC P0449
DTC P0452
DTC P0453
DTC P0455
DTC P0456
DTC P0488
DTC P0496
DTC P0502
DTC P0506 or P0507
DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610
DTC P0700
DTC P1106
DTC P1107
DTC P1111
DTC P1112
DTC P1114
DTC P1115
DTC P1121
DTC P1122
DTC P1391
DTC P1392
DTC P1393
DTC P1396
DTC P1397
DTC P2195
DTC P2196
DTC P2279
DTC P2422
Electrical/Electronic Schematic Diagrams
Engine Controls Schematic Icons
Engine Controls Schematics
Electrical/Electronic Specifications
Altitude Versus Barometric Pressure
Diagnostic Trouble Code (DTC) Type Definitions
Diagnostic Trouble Code (DTC) Types
Ignition System Specifications
Temperature Versus Resistance
Gas, Vacuum and Fluids Schematics and Diagrams
Emission Hose Routing Diagram
Evaporative Emissions Hose Routing Diagram
Fuel Hose/Pipes Routing Diagram
General Diagnostic Information
Scan Tool Data Definitions
Scan Tool Data List
Scan Tool Output Controls
Mechanical Specifications
Fastener Tightening Specifications
Removal, Installation, and Replacement
Camshaft Position Sensor Replacement
Crankshaft Position Sensor Replacement
Engine Control Module Replacement
Engine Coolant Temperature Sensor Replacement
Evaporative Emission Canister Purge Solenoid Valve Replacement
Evaporative Emission Canister Replacement
Exhaust Gas Recirculation Valve Replacement
Fuel Injection Fuel Rail Assembly Replacement
Fuel Pressure Gage Installation and Removal
Fuel Pressure Relief
Fuel Pump Replacement
Fuel Tank Draining
Fuel Tank Pressure Sensor Replacement
Fuel Tank Replacement
Heated Oxygen Sensor Replacement - Sensor 1
Heated Oxygen Sensor Replacement - Sensor 2
Idle Air Control Valve Replacement
Ignition Coil Replacement
Intake Air Temperature Sensor Replacement
Knock Sensor Replacement
Manifold Absolute Pressure Sensor Replacement
Rough Road Sensor Replacement
Spark Plug Replacement
Spark Plug Wire Replacement
Throttle Body Assembly Replacement
Throttle Body Inspection and Cleaning
Throttle Position Sensor Replacement