For 1990-2009 cars only
Engine
All Component Locator
All Description and Operation
- Air Intake System Description
- Central Sequential Duel Injection Fuel System Description
- Crankcase Ventilation System Description
- Engine Cooling Fan Description - Electric
- Enhanced Ignition System Description
- Evaporative Emission Control System Operation Description
- Exhaust Gas Recirculation (EGR) System Description
- Fuel Metering System Component Description
- Fuel Supply Component Description
- Information Sensors/Switches Description
- Knock Sensor (KS) System Description
- Long Term Fuel Trim Description
- Secondary Air Injection System Description
- Serial Data Communications
- Short Term Fuel Trim Description
- Speed Density System Description
- Vehicle Control Module Description
All Special Tools and Equipment
All Visual Identification
Cleaning, Inspection, and Adjustment
- Camshaft Retard Offset Adjustment
- Crankshaft Position System Variation Learn
- Evaporative Emission System Cleaning
- Fuel Injector Cleaning
- Fuel System Cleaning
Diagnostic Procedures
- Air Conditioning (A/C) Compressor Control Circuit Diagnosis
- Alcohol/Contaminants-in-Fuel Diagnosis
- Backfire
- Crankcase Ventilation System Diagnosis
- Cuts Out, Misses
- Data Link Connector Diagnosis
- Detonation/Spark Knock
- Dieseling, Run-On
- Engine Cranks But Does Not Run
- Enhanced Ignition System Diagnosis
- Evaporative Emission Control System Diagnosis
- Exhaust Gas Recirculation (EGR) System Diagnosis
- Fuel Injector Balance Test with Tech 2
- Fuel Injector Circuit Diagnosis
- Fuel Injector Solenoid Coil Test
- Fuel Pump Electrical Circuit Diagnosis
- Fuel System Diagnosis
- Hard Start
- Hesitation, Sag, Stumble
- Idle Air Control (IAC) System Diagnosis
- Inspection/Maintenance Status Resetting
- Intermittent Conditions
- Lack of Power, Sluggishness, or Sponginess
- Malfunction Indicator Lamp Circuit Check
- Manual Transmission Shift Light
- Poor Fuel Economy
- Poor Fuel Fill Quality
- Powertrain On Board Diagnostic (OBD) System Check
- Restricted Exhaust System Check
- Rough, Unstable, or Incorrect Idle and Stalling
- Secondary Air Injection System Diagnosis
- Service Bay Test
- Surges/Chuggles
- Symptoms
Diagnostic Trouble Codes
- 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 P0106 Manifold Absolute Pressure (MAP) System Performance
- 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 P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control
- DTC P0131 HO2S Circuit Low Voltage Bank 1 Sensor 1
- DTC P0132 HO2S Circuit High Voltage Bank 1 Sensor 1
- DTC P0133 HO2S Slow Response Bank 1 Sensor 1
- DTC P0134 HO2S Circuit Insufficient Activity Bank 1 Sensor 1
- DTC P0135 HO2S Heater Performance Bank 1 Sensor 1
- DTC P0137 HO2S Circuit Low Voltage Bank 1 Sensor 2
- DTC P0138 HO2S Circuit High Voltage Bank 1 Sensor 2
- DTC P0140 HO2S Circuit Insufficient Activity Bank 1 Sensor 2
- DTC P0141 HO2S Heater Performance Bank 1 Sensor 2
- DTC P0143 HO2S Circuit Low Voltage Bank 1 Sensor 3
- DTC P0144 HO2S Circuit High Voltage Bank 1 Sensor 3
- DTC P0146 HO2S Circuit Insufficient Activity Bank 1 Sensor 3
- DTC P0147 HO2S Heater Performance Bank 1 Sensor 3
- DTC P0151 HO2S Circuit Low Voltage Bank 2 Sensor 1
- DTC P0152 HO2S Circuit High Voltage Bank 2 Sensor 1
- DTC P0153 HO2S Slow Response Bank 2 Sensor 1
- DTC P0154 HO2S Circuit Insufficient Activity Bank 2 Sensor 1
- DTC P0155 HO2S Heater Performance Bank 2 Sensor 1
- DTC P0157 HO2S Circuit Low Voltage Bank 2 Sensor 2
- DTC P0158 HO2S Circuit High Voltage Bank 2 Sensor 2
- DTC P0160 HO2S Circuit Insufficient Activity Bank 2 Sensor 2
- DTC P0161 HO2S Heater Performance Bank 2 Sensor 2
- DTC P0171 Fuel Trim System Lean Bank 1
- DTC P0172 Fuel Trim System Rich Bank 1
- DTC P0174 Fuel Trim System Lean Bank 2
- DTC P0175 Fuel Trim System Rich Bank 2
- DTC P0300 Engine Misfire Detected
- DTC P0325 Knock Sensor Module Performance
- DTC P0327 Knock Sensor (KS) Circuit
- DTC P0336 Crankshaft Position (CKP) Sensor Performance
- DTC P0337 Crankshaft Position (CKP) Sensor Circuit Low Duty Cycle
- DTC P0338 Crankshaft Position (CKP) Sensor Circuit High Duty Cycle
- DTC P0339 Crankshaft Position (CKP) Sensor Circuit Intermittent
- DTC P0340 Camshaft Position (CMP) Sensor Circuit
- DTC P0341 Camshaft Position (CMP) Sensor Performance
- DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient
- DTC P0404 Exhaust Gas Recirculation (EGR) Open Position Performance
- DTC P0405 Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage
- DTC P0410 Secondary Air Injection (AIR) System
- DTC P0420 Catalyst System Low Efficiency Bank 1
- DTC P0430 Catalyst System Low Efficiency Bank 2
- DTC P0440 Evaporative Emission (EVAP) System
- DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected
- DTC P0446 Evaporative Emission (EVAP) Vent System Performance
- DTC P0452 Fuel Tank Pressure Sensor Circuit Low Voltage
- DTC P0453 Fuel Tank Pressure Sensor Circuit High Voltage
- DTC P0461 Fuel Level Sensor Performance
- DTC P0462 Fuel Level Sensor Circuit Low Voltage
- DTC P0463 Fuel Level Sensor Circuit High Voltage
- DTC P0500 Vehicle Speed Sensor (VSS) Circuit
- DTC P0506 Idle Speed Low
- DTC P0507 Idle Speed High
- DTC P0601
- DTC P0602 Control Module Not Programmed
- DTC P0603 Control Module Long Term Memory Reset
- DTC P0604 Control Module Random Access Memory (RAM)
- DTC P0605 Control Module Programming Read Only Memory (ROM)
- DTC P0704 Clutch Switch 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 P1133 HO2S Insufficient Switching Bank 1 Sensor 1
- DTC P1134 HO2S Transition Time Ratio Bank 1 Sensor 1
- DTC P1153 HO2S Insufficient Switching Bank 2 Sensor 1
- DTC P1154 HO2S Transition Time Ratio Bank 2 Sensor 1
- DTC P1336 Crankshaft Position (CKP) System Variation Not Learned
- DTC P1345 Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation
- DTC P1351 Ignition Coil Control Circuit High Voltage
- DTC P1361 Ignition Coil Control Circuit Low Voltage
- DTC P1380 Misfire Detected - Rough Road Data Not Available
- DTC P1381 Misfire Detected - No Communication with Brake Control Module
- DTC P1404 Exhaust Gas Recirculation (EGR) Closed Position Performance
- DTC P1415 Secondary Air Injection (AIR) System Bank 1
- DTC P1416 Secondary Air Injection (AIR) System Bank 2
- DTC P1441 Evaporative Emission (EVAP) System Flow During Non-Purge
- DTC P1508 Idle Speed Low - Idle Air Control (IAC) System Not Responding
- DTC P1509 Idle Speed High - Idle Air Control (IAC) System Not Responding
- DTC P1621 Control Module Long Term Memory Performance
- DTC P1626 Theft Deterrent Fuel Enable Signal Not Received
- DTC P1631 Theft Deterrent Start Enable Signal Not Correct
Electrical/Electronic Schematic Diagrams
Electrical/Electronic Specifications
Gas, Vacuum and Fluids Schematics and Diagrams
Mechanical Specifications
Other Specifications
- Diagnostic Trouble Code (DTC) List
- Engine Scan Tool Data Definitions
- Engine Scan Tool Data List
- Fuel System Specifications
- GM SPO Group Numbers
Removal, Installation, and Replacement
- Accelerator Control Cable Replacement
- Accelerator Pedal Replacement
- Air Cleaner Assembly Replacement
- Air Cleaner Element Replacement
- Air Cleaner Inlet Duct Replacement
- Camshaft Position Sensor Replacement
- Crankshaft Position Sensor Replacement
- Engine Coolant Temperature Sensor Replacement
- Evaporative Emission Canister Purge Solenoid Valve Replacement
- Evaporative Emission Canister Replacement
- Evaporative Emission System Hoses/Pipes Replacement
- Evaporative Emission Vent Valve Replacement
- Exhaust Gas Recirculation Pipe Replacement
- Exhaust Gas Recirculation Valve Replacement
- Filler Tube Replacement
- Fuel Filter Element Replacement
- Fuel Hose/Pipes Assembly Replacement
- Fuel Hose/Pipes Replacement - Engine Compartment
- Fuel Injector Replacement
- Fuel Level Sensor Replacement
- Fuel Meter Body Assembly Replacement
- Fuel Pressure Regulator Replacement
- Fuel Pressure Relief
- Fuel Pressure Service Valve Replacement
- Fuel Pump Relay Replacement
- Fuel Sender and Balance Pump Control Module Replacement
- Fuel Sender Assembly Replacement
- Fuel Tank Draining
- Fuel Tank Fuel Pump Module Replacement
- Fuel Tank Pressure Sensor Replacement
- Fuel Tank Replacement
- Heated Oxygen Sensor Replacement
- Idle Air Control Valve Replacement
- In-Line Fuel Filter Replacement
- Intake Air Resonator 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
- Secondary Air Injection Check Valve and Check Valve Pipe Replacement
- Secondary Air Injection Pump Replacement
- Secondary Air Injection Shutoff Valve Replacement
- Secondary Air Injection Solenoid Valve Replacement
- Throttle Body Assembly Replacement
- Throttle Position Sensor Replacement
- VCM Replacement/Programming
