For 1990-2009 cars only
Engine
All Component Locator
All Description and Operation
- Alternative Fuel Engine Control Unit
- Fuel Gauge Description
- Fuel Gauge Selector Switch/Fuel Indicator Lamp Description
- Fuel Metering System Description
- Fuel Supply Component Description
All Special Tools and Equipment
All Visual Identification
Cleaning, Inspection, and Adjustment
Diagnostic Procedures
- Alternative Fuel (AF) Fuel Pump Relay Diagnosis
- Alternative Fuels (AF) Powertrain On Board (OBD) System Check
- Backfire
- CNG Fuel Gauge Reading Inaccurate
- Cuts Out, Misses
- Dieseling, Run-On
- Fuel Gauge Relay Diagnosis
- Fuel Gauge Selector Switch/Fuel Indicator Lamp Diagnosis
- Fuel System Diagnosis
- Fuel System Unwanted Switch to Gasoline
- Hard Start
- Hesitation, Sag, Stumble
- Ignition Relay Diagnosis
- Intermittent Conditions
- Lack of Power, Sluggishness, or Sponginess
- Lock-Off Relay Diagnosis
- Malfunction Indicator Lamp Circuit Check
- Poor Fuel Economy
- Poor Fuel Fill Quality
- Rough, Unstable, or Incorrect Idle and Stalling
- 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 P0134 HO2S Circuit Insufficient Activity Bank 1 Sensor 1
- DTC P0135 HO2S Heater Performance Bank 1 Sensor 1
- DTC P0151 HO2S Circuit Low Voltage Bank 2 Sensor 1
- DTC P0152 HO2S Circuit High Voltage 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
- DTC P0172 Fuel Trim System Rich
- DTC P0336 Crankshaft Position (CKP) Sensor Performance
- DTC P0601 Control Module Read Only Memory (ROM)
- DTC P1201 Gas Mass Sensor Performance
- DTC P1202 Gas Mass Sensor Circuit Low Frequency
- DTC P1203 Gas Mass Sensor Circuit High Frequency
- DTC P1215 Control Module Output Circuits
- DTC P1432 Fuel Pressure Sensor Circuit Low Voltage
- DTC P1433 Fuel Pressure Sensor Circuit High Voltage
Electrical/Electronic Schematic Diagrams
Electrical/Electronic Specifications
- CNG Temperature Versus Percent Full and PWM Output
- Fuel Pressure Sensor Output Voltage Versus Pressure
- Fuel Temperature Sensor Output Voltage Versus Temperature Resistance
Mechanical Specifications
Other Specifications
- Diagnostic Trouble Code (DTC) List
- Engine Scan Tool Data Definitions
- Engine Scan Tool Data List
- GM SPO Group Numbers
Removal, Installation, and Replacement
- Compressed Natural Gas High Pressure Regulator Replacement
- Compressed Natural Gas Low Pressure Regulator and Bracket Replacement
- Engine Control Unit Adapter Replacement
- Engine Control Unit Bracket Replacement
- Engine Control Unit Replacement
- Fuel Fill Line Replacement
- Fuel Fill Valve Filter Replacement
- Fuel Fill Valve Replacement
- Fuel Gauge Selector Switch/Fuel Indicator Lamp Replacement
- Fuel Hoses/Lines Replacement - Gas Mass Sensor/Mixture Control Valve to Gas Distribution Adapter
- Fuel Hoses/Lines Replacement - High Pressure Regulator to Intake Manifold
- Fuel Hoses/Lines Replacement - Intake Manifold to Low Pressure Lock-Off
- Fuel Hoses/Lines Replacement - Line Union to High Pressure Regulator
- Fuel Hoses/Lines Replacement - Tank to Line Union
- Fuel Hoses/Pipes Replacement - Low Pressure Regulator to Gas Mass Sensor/Mixture Control Valve
- Fuel Pressure Relief
- Fuel Pressure Sensor Replacement
- Fuel Tank Replacement
- Gas Distribution Adapter Replacement
- Gas Mass Sensor/Mixture Control Valve and Mounting Bracket Replacement
- Gas Mass Sensor/Mixture Control Valve Mounting Bracket Replacement
- High Pressure Lock-Off Solenoid Replacement
- High Pressure Regulator Filter Replacement
- Low Pressure Lock-Off Solenoid Replacement
- Positive Crankcase Ventilation Make-Up Air Hose Replacement
- Throttle Body Assembly Replacement
