For 1990-2009 cars only
Engine
All Component Locator
All Description and Operation
- Air Intake System Description
- Crankcase Ventilation System Description
- Cruise Control 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 Metering System Description
- Fuel Supply Component Description
- Information Sensors/Switches Description
- Knock Sensor (KS) System Description
- Powertrain Control Module Controlled Air Conditioning
- Powertrain Control Module Controlled Messages Description
- Powertrain Control Module Description
- Powertrain Control Module Outputs Description
- Transmission Controls Description
All Special Tools and Equipment
All Visual Identification
Cleaning, Inspection, and Adjustment
- Engine Oil Life Monitor Reset
- Evaporative Emission System Cleaning
- Fuel Sender Assembly Service
- Fuel System Cleaning
- Throttle Body Inspection and Cleaning
Diagnostic Procedures
- Alcohol/Contaminants-in-Fuel Diagnosis
- Backfire
- Crankcase Ventilation System Diagnosis
- Cruise Control Diagnosis
- Cuts Out, Misses
- Data Link Connector Diagnosis
- Detonation/Spark Knock
- Dieseling, Run-On
- EEPROM Diagnosis
- Electric Cooling Fan Diagnosis
- Electronic Ignition (EI) System Diagnosis
- Engine Cranks But Does Not Run
- Fuel Injector Balance Test
- 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 Quality Diagnosis
- Fuel System Diagnosis
- Fuel System Pressure Test
- Fuel Tank Leak Check
- Hard Start
- Hesitation, Sag, Stumble
- Inspection/Maintenance Status Resetting
- Lack of Power, Sluggishness, or Sponginess
- Low Engine Oil Level Indicator Diagnosis
- Low Engine Oil Pressure Indicator Diagnosis
- Poor Fuel Economy
- Poor Fuel Fill Quality
- Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis
- Powertrain Control Module Controlled Tachometer Diagnosis
- Powertrain Control Module Diagnosis
- Powertrain Control Power and Ground Check
- Powertrain On Board Diagnostic (OBD) System Check
- Restricted Exhaust System Check
- Rough, Unstable, or Incorrect Idle and Stalling
- Secondary Ignition 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 P0105 MAP Sensor Circuit Insufficient Activity
- 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 P0111 Intake Air Temperature (IAT) Sensor Performance
- DTC P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage
- DTC P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage
- DTC P0116 Engine Coolant Temperature (ECT) Sensor Performance
- DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage
- DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
- DTC P0120 TP System Performance
- DTC P0121 TP Sensor Circuit Insufficient Activity
- 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 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 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 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 P0207 Injector 7 Control Circuit
- DTC P0208 Injector 8 Control Circuit
- DTC P0231 Fuel Pump Feedback Circuit Low Voltage
- DTC P0232 Fuel Pump Feedback Circuit High Voltage
- DTC P0300 Engine Misfire Detected
- DTC P0322 IC Module 4X Reference CKT No Frequency
- DTC P0325 Knock Sensor Module Performance
- DTC P0326 Knock Sensor CKT Excessive Spark Retard
- DTC P0327 Knock Sensor Circuit Low Voltage
- DTC P0340 IC Module Cam Reference CKT No Frequency
- DTC P0371 IC 24X Reference CKT Too Many Pulses
- DTC P0372 IC 24X Reference Circuit Missing Pulses
- 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 P0420 Catalyst System Low Efficiency
- 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 P0506 Idle Speed Low
- DTC P0507 Idle Speed High
- DTC P0550 Power Steering Pressure (PSP) Switch Circuit
- DTC P0560 System Voltage
- DTC P0563 System Voltage High
- DTC P0601 Control Module Read Only Memory (ROM)
- DTC P0602 Control Module Not Programmed
- DTC P0603 Control Module Long Term Memory Reset
- DTC P0606 Control Module Internal Performance
- DTC P1106 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
- DTC P1107 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
- DTC P1108 BARO to MAP Sensor Comparison Too High
- 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 P1189 Engine Oil Pressure (EOP) Switch Circuit
- DTC P1258 Engine Coolant Overtemperature - Protection Mode Active
- DTC P1320 IC 4X Reference Circuit Intermittent
- DTC P1323 IC 24X Reference Circuit Low Frequency
- DTC P1350 Ignition Control System
- DTC P1370 IC 4X Reference Circuit Too Many Pulses
- DTC P1371 IC 4X Reference Circuit Too Few Pulses
- DTC P1375 IC 24X Reference Circuit High Voltage
- DTC P1376 Ignition Ground Circuit
- DTC P1377 IC Cam Pulse To 4X Reference Pulse
- 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 P1441 Evaporative Emission (EVAP) System Flow During Non-Purge
- DTC P1483 Engine Cooling System Performance
- 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 P1520 Transmission Range Switch Circuit
- DTC P1524 Throttle Closed Position Performance
- DTC P1527 Transmission Range to Pressure Switch Correlation
- DTC P1554 Cruise Control Feedback Circuit
- DTC P1560 Transaxle Not in Drive - Cruise Control Disabled
- DTC P1564 Vehicle Acceleration Too High - Cruise Control Disabled
- DTC P1566 Engine RPM Too High - Cruise Control Disabled
- DTC P1570 Traction Control Active - Cruise Control Disabled
- DTC P1571 Traction Control Torque Request Circuit
- DTC P1574 Stoplamp Switch Circuit
- DTC P1575 Extended Travel Brake Switch Circuit
- DTC P1579 P/N to D/R at High Throttle Angle - Power Reduction Mode Active
- DTC P1599 Engine Stall or Near Stall Detected
- DTC P1602 Loss of EBTCM Serial Data
- DTC P1603 Loss of SDM Serial Data
- DTC P1604 Loss of IPC Serial Data
- DTC P1605 Loss of HVAC Serial Data
- DTC P1610 Loss of PZM Serial Data
- DTC P1611 Loss of CVRTD Serial Data
- DTC P1617 Engine Oil Level Switch Circuit
- DTC P1621 Control Module Long Term Memory Performance
- 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 P1632 Theft Deterrent Fuel Disable Signal Received
- DTC P1633 Ignition 0 Switch Circuit
- DTC P1634 Ignition 1 Switch Circuit
- DTC P1638 Generator F-Terminal Circuit
- DTC P1640 Driver-1-Input High Voltage
- DTC P1641 Malfunction Indicator Lamp (MIL) Control Circuit
- DTC P1642 Vehicle Speed Output Circuit
- DTC P1644 Traction Control Delivered Torque Output Circuit
- DTC P1645 Evaporative Emission (EVAP) Purge Solenoid Control Circuit
- DTC P1646 Evaporative Emission (EVAP) Vent Solenoid Control Circuit
- DTC P1650 Control Module Output B Circuit
- DTC P1652 Powertrain Induced Chassis Pitch Output Circuit
- DTC P1654 Cruise Control Inhibit Output Circuit
- DTC P1660 Cooling Fan Control Circuits
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 Specifications
- GM SPO Group Numbers
Removal, Installation, and Replacement
- Accelerator Control Cable Bracket 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 Hoses
- Evaporative Emission Canister Purge Solenoid Valve Replacement
- Evaporative Emission Canister Replacement
- Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank
- Evaporative Emission Hoses/Pipes Replacement - Engine
- Evaporative Emission Vent Valve Replacement
- Exhaust Gas Recirculation (EGR) System Cleaning
- Exhaust Gas Recirculation Pipe Replacement
- Exhaust Gas Recirculation Valve 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 Sender Assembly Replacement
- Fuel Tank Draining
- Fuel Tank Pressure Sensor Replacement
- Fuel Tank Replacement
- Heated Oxygen Sensor Replacement
- Idle Air Control Valve Replacement
- Ignition Control Module Replacement
- In-Line Fuel Filter Replacement
- Intake Air Temperature Sensor Replacement
- Knock Sensor Module 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 Body Spacer Replacement
- Throttle Position Sensor Replacement
