GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Buick
🢒
2000
🢒
Century (China)
🢒
Engine
🢒 Engine Controls - 2.5L (LB8) and 3.0L (L46)
Engine
All Component Locator
Engine Controls Component Views
Engine Controls Components
All Description and Operation
Air Intake System Description
Crankcase Ventilation System Description
Electronic Ignition (EI) System Description
Engine Cooling Fan Description - Electric
Evaporative Emission Control System Operation Description
Exhaust Gas Recirculation (EGR) System Description
Fuel Metering Modes of Operation
Fuel Metering System Component Description
Fuel Supply Component Description
Information Sensors/Switches Description
Knock Sensor (KS) System Description
Powertrain Control Module Controlled Air Conditioning Description
Powertrain Control Module Controlled Generator Description
Powertrain Control Module Description
All Special Tools and Equipment
Special Tools
All Visual Identification
Engine Controls Connector End Views
Powertrain Control Module Connector End Views
Cleaning, Inspection, and Adjustment
Crankcase Ventilation System Inspection
Fuel System Cleaning
Diagnostic Procedures
Alcohol/Contaminants-in-Fuel Diagnosis
Backfire
Crankcase Ventilation System Diagnosis
Cuts Out, Misses
Data Link Connector Diagnosis
Detonation/Spark Knock
Diagnostic Starting Point
Dieseling, Run-On
Electric Cooling Fan Diagnosis
Electronic Ignition (EI) System Diagnosis
Engine Cranks But Does Not Run
Engine Oil Level Sensor and/or Switch Diagnosis
Engine Oil Pressure Sensor and/or Switch Diagnosis
Fuel Injector Balance Test
Fuel Injector Balance Test with Tech 2
Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Between 10-35 Degrees C (50-95 Degrees F)
Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Outside 10-35 Degrees C (50-95 Degrees F)
Fuel Pump Electrical Circuit Diagnosis
Fuel System Diagnosis
Fuel System Pressure Test
Fuel Tank Leak Check
Hard Start
Hesitation, Sag, Stumble
Idle Air Control (IAC) System Diagnosis
Intermittent Conditions
Lack of Power, Sluggishness, or Sponginess
Malfunction Indicator Lamp (MIL) Inoperative
Manifold Absolute Pressure Sensor Circuit Diagnosis
Poor Fuel Economy
Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis
Powertrain Control Module Controlled Tachometer Diagnosis
Powertrain Control Module Diagnosis
Powertrain Control Module Outputs Diagnosis
Powertrain On Board Diagnostic (OBD) System Check
Restricted Exhaust System Check
Rough, Unstable, or Incorrect Idle and Stalling
Starter Inhibit Relay Circuit Diagnosis
Surges/Chuggles
Symptoms
Diagnostic Trouble Codes
Diagnostic Trouble Code (DTC) List/Type
Diagnostic Trouble Code (DTC) Type Definitions
DTC P0101 Mass Air Flow (MAF) Sensor Performance
DTC P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency
DTC P0103 Mass Air Flow (MAF) Sensor Circuit High Frequency
DTC P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
DTC P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
DTC P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage
DTC P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage
DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage
DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
DTC P0121 Throttle Position (TP) Sensor Performance
DTC P0122 Throttle Position (TP) Sensor Circuit Low Voltage
DTC P0123 Throttle Position (TP)Sensor Circuit High Voltage
DTC P0131 HO2S Circuit Low Voltage Sensor 1
DTC P0132 HO2S Circuit High Voltage Sensor 1
DTC P0133 HO2S Slow Response Sensor 1
DTC P0134 HO2S Circuit Insufficient Activity Sensor 1
DTC P0171 Fuel Trim System Lean
DTC P0172 Fuel Trim System Rich
DTC P0201 Injector 1 Control Circuit
DTC P0202 Injector 2 Control Circuit
DTC P0203 Injector 3 Control Circuit
DTC P0204 Injector 4 Control Circuit
DTC P0205 Injector 5 Control Circuit
DTC P0206 Injector 6 Control Circuit
DTC P0230 Fuel Pump Relay Control Circuit
DTC P0300 Engine Misfire Detected
DTC P0325 Knock Sensor (KS) Circuit
DTC P0327 Knock Sensor (KS) Circuit
DTC P0336 Crankshaft Position (CKP) Sensor Circuit
DTC P0341 Camshaft Position (CMP) Sensor Performance
DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient
DTC P0403 Exhaust Gas Recirculation (EGR) Solenoid Control Circuit
DTC P0404 Exhaust Gas Recirculation (EGR) Open Position Performance
DTC P0405 Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage
DTC P0443 Evaporative Emission (EVAP) Purge Solenoid Control Circuit
DTC P0462 Fuel Level Sensor Circuit Low Voltage
DTC P0463 Fuel Level Sensor Circuit High Voltage
DTC P0480 Cooling Fan Relay 1 Control Circuit
DTC P0481Cooling Fan Relay 2 Control Circuit
DTC P0506 Idle Speed Low
DTC P0507 Idle Speed High
DTC P0530 Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit
DTC P0560 System Voltage
DTC P0601 Control Module Read Only Memory (ROM)
DTC P0602 Control Module Not Programmed
DTC P0620 Generator Performance
DTC P0650 Malfunction Indicator Lamp (MIL) Control Circuit
DTC P1106 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
DTC P1107 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
DTC P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
DTC P1112 Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage
DTC P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage
DTC P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage
DTC P1121 Throttle Position (TP) Sensor Circuit Intermittent High Voltage
DTC P1122 Throttle Position (TP) Sensor Circuit Intermittent Low Voltage
DTC P1189 Engine Oil Pressure (EOP) Switch Circuit
DTC P1336 Crankshaft Position (CKP) System Variation Not Learned
DTC P1351 Ignition Coil Control Circuit High Voltage
DTC P1352 Ignition Bypass Circuit High Voltage
DTC P1361 Ignition Control (IC) Circuit Low Voltage
DTC P1362 Ignition Bypass Circuit Low Voltage
DTC P1374 Crankshaft Position (CKP) High to Low Resolution Frequency Correlation
DTC P1404 Exhaust Gas Recirculation (EGR) Closed Position Performance
DTC P1546 Air Conditioning (A/C) Clutch Relay Control Circuit
DTC P1602 Lost Communications with Brake/Traction Control (EBTCM) System
DTC P1605 Lost Communications with HVAC Control System
DTC P1610 Lost Communications with Body Multiple Control (BCM) System
DTC P1626 Theft Deterrent Fuel Enable Signal Lost
DTC P1630 Theft Deterrent Learn Mode Active
DTC P1631 Theft Deterrent Start Enable Signal Not Correct
DTC P1635 5 Volt Reference Circuit
DTC P1639 5 Volt Reference 2 Circuit
Electrical/Electronic Schematic Diagrams
Engine Controls Schematic Icons
Engine Controls Schematics
Electrical/Electronic Specifications
Temperature Versus Resistance
Gas, Vacuum and Fluids Schematics and Diagrams
Emission Hose Routing Diagram
General Diagnostic Information
Scan Tool Data Definitions
Scan Tool Data List
Mechanical Specifications
Fastener Tightening Specifications
Removal, Installation, and Replacement
Accelerator Control Cable Bracket Replacement
Accelerator Control Cable Replacement
Accelerator Pedal Replacement
Air Cleaner Assembly Replacement
Air Filter Element Replacement
Camshaft Position Sensor Replacement
Crankshaft Position Sensor Replacement
Crankshaft Position System Variation Learn
Engine Coolant Temperature Sensor Replacement
Engine Oil Level Sensor and/or Switch Replacement
Engine Oil Pressure Sensor and/or Switch Replacement
Evaporative Emission Canister Purge Solenoid Valve Replacement
Evaporative Emission Canister Replacement
Evaporative Emission System Hoses/Pipes Replacement
Exhaust Gas Recirculation Pipe Replacement
Exhaust Gas Recirculation Valve Replacement
Fill Limiter Vent Valve Replacement
Filler Tube Replacement
Fuel Hose/Pipes Replacement - Filter to Engine
Fuel Hoses/Pipes Replacement - Filter to Tank
Fuel Injection Fuel Rail Assembly Replacement
Fuel Injector Replacement
Fuel Level Sensor Replacement
Fuel Pressure Regulator Replacement
Fuel Pressure Relief
Fuel Pump Relay Replacement
Fuel Pump Strainer Replacement
Fuel Sender Assembly Replacement
Fuel Tank Draining
Fuel Tank Replacement
Heated Oxygen Sensor Replacement
Idle Air Control Valve Replacement
Ignition Coil Replacement
Ignition Control Module Replacement
In-Line Fuel Filter Replacement
Intake Air Temperature Sensor Replacement
Knock Sensor Replacement
Manifold Absolute Pressure Sensor Replacement
Mass Airflow Sensor Replacement
Metal Collar Quick Connect Fitting Service
Plastic Collar Quick Connect Fitting Service
Powertrain Control Module Replacement/Programming
Throttle Body Assembly Replacement
Throttle Position Sensor Replacement