Engine Controls - 7.4L for GMC Truck GMC P42 Commercial Chassis 1999

All Description and Operation

• Air Intake System Description
• Crankcase Ventilation System Description
• Enhanced Ignition System Description
• Exhaust Gas Recirculation (EGR) System Description
• Information Sensors/Switches Description
• Knock Sensor (KS) System Description
• Long Term Fuel Trim Description
• Serial Data Communications
• Short Term Fuel Trim Description
• Speed Density System Description
• Vehicle Control Module Description

All Special Tools and Equipment

• Special Tools

Cleaning, Inspection, and Adjustment

• Fuel System Cleaning

Diagnostic Procedures

• Service Bay Test

Electrical/Electronic Specifications

• Temperature Versus Resistance

Mechanical Specifications

• Fastener Tightening Specifications

Other Specifications

• Diagnostic Trouble Code (DTC) List
• Engine Scan Tool Data Definitions
• Fuel System Specifications

Removal, Installation, and Replacement

• Evaporative Emission Canister Replacement
• Evaporative Emission Vent Valve Replacement
• Fuel Hose/Pipes Assembly Replacement
• Fuel Level Sensor Replacement
• Fuel Pressure Relief
• Fuel Pressure Service Valve Replacement
• Fuel Pump Relay Replacement
• Fuel Sender Assembly Replacement
• Fuel Tank Draining
• Fuel Tank Pressure Sensor Replacement
• Fuel Tank Replacement
• In-Line Fuel Filter Replacement
• Metal Collar Quick Connect Fitting Service
• Plastic Collar Quick Connect Fitting Service