For 1990-2009 cars only
Engine
All Component Locator
All Description and Operation
- Air Intake System Description
- Crankcase Ventilation System Description
- Electronic Ignition (EI) System Description
- 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
- Long Term Fuel Trim Description
- Powertrain Control Module Controlled Air Conditioning Description
- Powertrain Control Module Description
- Secondary Air Injection System Description
- Short Term Fuel Trim Description
- Speed Density System Description
All Special Tools and Equipment
All Visual Identification
Cleaning, Inspection, and Adjustment
- Crankshaft Position System Variation Learn
- Engine Oil Life Monitor Reset
- Evaporative Emission System Cleaning
- Exhaust Gas Recirculation (EGR) System Cleaning
- Fuel System Cleaning
- Idle Learn
- Throttle Body Cleaning
Diagnostic Procedures
- Air Conditioning (A/C) Recirculation Door Control Circuit Diagnosis
- Alcohol/Contaminants-in-Fuel Diagnosis
- Backfire
- Cruise Control Engage Circuit Diagnosis
- Cuts Out, Misses
- Data Link Connector Diagnosis
- Detonation/Spark Knock
- Dieseling, Run-On
- Electronic Ignition (EI) System Diagnosis
- Engine Coolant Level Switch/Sensor Diagnosis
- Engine Coolant Temperature Gauge Inaccurate Diagnosis
- Engine Cranks But Does Not Run
- Engine Oil Level Sensor and/or Switch Diagnosis
- Engine Speed Output Circuit Diagnosis
- Front Axle Switch Circuit Diagnosis
- Fuel Gauge Inaccurate Diagnosis
- Fuel Injector Balance Test with Special Tool
- 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 Tank Leak Check
- Hard Start
- Hesitation, Sag, Stumble
- Ignition Relay Diagnosis
- Inspection/Maintenance Status Resetting
- Lack of Power, Sluggishness, or Sponginess
- Poor Fuel Economy
- Poor Fuel Fill Quality
- Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis
- Powertrain Control Module Controlled Generator Diagnosis
- Powertrain On Board Diagnostic (OBD) System Check
- Restricted Exhaust System Check
- Rough, Unstable, or Incorrect Idle and Stalling
- Service Bay Test
- Surges/Chuggles
- Symptoms
- Transmission Range Switch Circuit Diagnosis
- Vehicle Speed Output Circuit Diagnosis
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 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 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 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 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 P0200 Injector Control Circuit
- DTC P0230 Fuel Pump Relay Control Circuit
- DTC P0300 Engine Misfire Detected
- DTC P0325 Knock Sensor Module Performance
- DTC P0327 Knock Sensor (KS) 1 Circuit
- DTC P0332 Knock Sensor (KS) 2 Circuit
- DTC P0335 Crankshaft Position (CKP) Sensor Circuit
- DTC P0336 Crankshaft Position (CKP) Sensor Performance
- DTC P0341 Camshaft Position (CMP) Sensor Performance
- DTC P0342 Camshaft Position (CMP) Sensor Circuit Low Voltage
- DTC P0343 Camshaft Position (CMP) Sensor Circuit High Voltage
- DTC P0351 Ignition Coil 1 Control Circuit
- DTC P0352 Ignition Coil 2 Control Circuit
- DTC P0353 Ignition Coil 3 Control Circuit
- DTC P0354 Ignition Coil 4 Control Circuit
- DTC P0355 Ignition Coil 5 Control Circuit
- DTC P0356 Ignition Coil 6 Control Circuit
- DTC P0357 Ignition Coil 7 Control Circuit
- DTC P0358 Ignition Coil 8 Control Circuit
- 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 P0418 Secondary Air Injection (AIR) Pump Relay Control Circuit
- 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 P0443 Evaporative Emission (EVAP) Purge Solenoid Control Circuit
- DTC P0446 Evaporative Emission (EVAP) Vent System Performance
- DTC P0449 Evaporative Emission (EVAP) Vent Solenoid Control Circuit
- 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 P0562 System Voltage Low
- DTC P0563 System Voltage High
- DTC P0601 Control Module Read Only Memory (ROM)
- DTC P0602 Control Module Not Programmed
- DTC P0604 Control Module Random Access Memory (RAM)
- DTC P0608 Vehicle Speed Output Circuit
- DTC P0650 Malfunction Indicator Lamp (MIL) Control Circuit
- DTC P0654 Engine Speed Output Circuit
- DTC P0704 Clutch Switch Circuit
- DTC P0705 Trans Range Switch Circuit
- DTC P0706 Trans Range Switch Performance
- 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 P1258 Engine Coolant Overtemperature - Protection Mode Active
- DTC P1336 Crankshaft Position (CKP) System Variation Not Learned
- 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 P1626 Theft Deterrent Fuel Enable Signal Lost
- DTC P1631 Theft Deterrent Start Enable Signal Not Correct
- DTC P1635 5 Volt Reference 1 Circuit
- DTC P1637 Generator L-Terminal Circuit
- DTC P1639 5 Volt Reference 2 Circuit
- DTC U1026 Loss of ATC Class 2 Communication
- DTC U1041 Loss of EBCM Communication
- DTC U1064 Loss of BCM and/or VTD Communication
- DTC U1300 Class 2 Communication CKT Low Voltage
- DTC U1301 Class 2 Communication CKT High Voltage
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
- 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 Vent Valve Replacement
- Exhaust Gas Recirculation Pipe Replacement
- Exhaust Gas Recirculation Valve Replacement
- Filler Tube Replacement
- Fuel Hose/Pipes Assembly Replacement
- Fuel Hose/Pipes Replacement - Chassis
- Fuel Hose/Pipes Replacement - Engine Compartment
- Fuel Injection Fuel Rail Assembly Replacement
- Fuel Injection Fuel Rail Crossover Tube Replacement
- Fuel Injector Replacement
- Fuel Level Sensor Replacement
- Fuel Pressure Regulator Replacement
- Fuel Pressure Relief
- Fuel Pressure Service Valve Replacement
- Fuel Pump Relay Replacement
- Fuel Pump Strainer Replacement
- Fuel Rail Outlet Pipe Replacement
- Fuel Sender Assembly Replacement
- Fuel Tank Draining
- Fuel Tank Filler Hose Replacement
- Fuel Tank Fuel Pump Module Replacement
- Fuel Tank Pressure Sensor Replacement
- Fuel Tank Replacement
- Heated Oxygen Sensor Replacement - Bank 1
- Heated Oxygen Sensor Replacement - Bank 2
- Idle Air Control Valve Replacement
- In-Line Fuel Filter Replacement
- Knock Sensor Replacement
- Manifold Absolute Pressure Sensor Replacement
- Mass Airflow Sensor with Intake Air Temperature Sensor Replacement
- Metal Collar Quick Connect Fitting Service
- Plastic Collar Quick Connect Fitting Service
- Powertrain Control Module Replacement/Programming
- Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 1
- Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 2
- Secondary Air Injection Pump Relay 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
