GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2001
🢒
Express (CNG)
🢒
Engine
🢒 Engine Controls - 5.0L and 5.7L
Engine
All Component Locator
Engine Controls Component Views
Engine Controls Components
All Description and Operation
Alternative Fuels Engine Control Module Description
Fuel System Description
All Special Tools and Equipment
Special Tools
All Visual Identification
Alternative Fuels Engine Control Module Connector End Views
Engine Controls Connector End Views
Cleaning, Inspection, and Adjustment
Fuel Tank Cleaning
Fuel Tank Inspection
Diagnostic Procedures
Backfire
Cuts Out, Misses
Diagnostic System Check - Alternative Fuels (Engine Controls)
Dieseling, Run-On
Fuel Lock-Off Relay Diagnosis
Fuel Pump Electrical Circuit Diagnosis
Fuel System Diagnosis
Fuel System Unwanted Switch to Gasoline
Hard Start
Hesitation, Sag, Stumble
Ignition Relay Diagnosis
Inspection/Maintenance (I/M) System Check
Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set
Intermittent Conditions
Lack of Power, Sluggishness, or Sponginess
Malfunction Indicator Lamp (MIL) Always On
Malfunction Indicator Lamp (MIL) Inoperative
Poor Fuel Economy
Poor Fuel Fill Quality
Rough, Unstable, or Incorrect Idle and Stalling
Surges/Chuggles
Symptoms - Engine Controls
Diagnostic Trouble Codes
Diagnostic Trouble Code (DTC) List
DTC P0101
DTC P0102
DTC P0103
DTC P0106
DTC P0107
DTC P0108
DTC P0112
DTC P0113
DTC P0117
DTC P0118
DTC P0121
DTC P0122
DTC P0123
DTC P0125
DTC P0131 or P0151
DTC P0132 or P0152
DTC P0134 or P0154
DTC P0135 or P0155
DTC P0171
DTC P0172
DTC P0336
DTC P0500
DTC P0601
DTC P1215
DTC P1432
DTC P1433
Electrical/Electronic Schematic Diagrams
Engine Controls Schematics
Electrical/Electronic Specifications
Compressed Natural Gas (CNG) Temperature Versus Percent Full
Fuel Gage PWM Output
Fuel Tank Pressure Sensor Output Voltage Versus Pressure
Fuel Temperature Sensor Output Voltage Versus Temperature Resistance
General Diagnostic Information
Scan Tool Data Definitions
Scan Tool Data List
Mechanical Specifications
Fastener Tightening Specifications
Removal, Installation, and Replacement
Air Cleaner Outlet Duct Replacement
Alternative Fuels Engine Control Module Replacement
Compressed Natural Gas High Pressure Regulator Replacement
Compressed Natural Gas Low Pressure Regulator Replacement
Compressed Natural Gas Tank Filler Pipe Replacement
Fill Line Union (Check Valve) Replacement
Fill Valve Access Cover Replacement
Fill Valve Filter Replacement
Fill Valve Mounting Cup Replacement
Fill Valve Replacement
Fuel Control Solenoid Replacement
Fuel Hoses/Pipes Replacement - Front High Pressure Lock-Off to High Pressure Regulator Union
Fuel Hoses/Pipes Replacement - High Pressure Regulator to Low Pressure Lock-Off Union
Fuel Hoses/Pipes Replacement - High Pressure Regulator Union to High Pressure Regulator
Fuel Hoses/Pipes Replacement - Rear High Pressure Lock-Off to Front High Pressure Lock-Off
Fuel Mixer Replacement
Fuel Pressure Relief
Fuel Tank Bracket Replacement
Fuel Tank Pressure Sensor Replacement
Fuel Tank Replacement
Fuel Tank Shield Replacement
Fuel Tank Venting
High Pressure Lock-Off Solenoid Replacement
High Pressure Regulator Filter Replacement
Idle Control Solenoid Replacement
Low Pressure Lock-Off Solenoid Replacement