October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Engine Control System - 5.3L - Introduction Expand All (for easy ctrl-f) Collapse All Specifications Schematic and Routing Diagrams Component Locator Repair Instructions Engine Control Module (ECM) Replacement CKP System Variation Learn Procedure Engine Coolant Temperature (ECT) Sensor Replacement Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Replacement Manifold Absolute Pressure (MAP) Sensor Replacement Brake Booster Vacuum Sensor Replacement Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 1 Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 2 Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 1 Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 2 Accelerator Pedal Position (APP) Sensor Replacement Throttle Body Assembly Replacement Throttle Body Cleaning Procedure Fuel Pressure Relief Procedure Fuel Pressure Gage Installation and Removal Quick Connect Fitting(s) Service (Metal Collar) Quick Connect Fitting(s) Service (Plastic Collar) Fuel Tank Draining Procedure Fuel Tank Filler Pipe Replacement (TrailBlazer EXT, Envoy XL, Envoy XUV) Fuel Tank Filler Pipe Replacement (TrailBlazer, Envoy, Rainier) Fuel Tank Replacement (TrailBlazer EXT, Envoy XL, Envoy XUV) Fuel Tank Replacement (TrailBlazer, Envoy, Rainier) Fuel Tank Pressure Sensor Replacement Fuel Level Sensor Replacement Fuel Sender Assembly Replacement Fuel Hose/Pipes Replacement - Chassis Fuel Hose/Pipe Replacement - Tank (TrailBlazer EXT, Envoy XL, Envoy XUV) Fuel Hose/Pipe Replacement - Tank (TrailBlazer, Envoy, Rainier) Fuel System Cleaning Fuel Rail Assembly Replacement Fuel Rail Crossover Pipe Replacement Fuel Injector Replacement Fuel Injector Cleaning Procedure Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Evaporative Emission (EVAP) Hoses/Pipes Replacement - Engine Evaporative Emission (EVAP) Hoses/Pipes Replacement - Canister Vent Evaporative Emission (EVAP) Hoses/Pipes Replacement - Chassis Evaporative Emission (EVAP) Hoses/Pipes Replacement - Canister/Fuel Tank (TrailBlazer, Envoy, Rainier) Evaporative Emission (EVAP) Hoses/Pipes Replacement - Canister/Fuel Tank (TrailBlazer EXT, Envoy XL, Envoy XUV) Evaporative Emission (EVAP) Canister Replacement (TrailBlazer, Envoy, Rainier) Evaporative Emission (EVAP) Canister Replacement (TrailBlazer EXT, Envoy XL, Envoy XUV) Evaporative Emission (EVAP) System Cleaning Ignition Coil(s) Replacement Spark Plug Wire Inspection Spark Plug Wire Replacement Spark Plug Inspection Spark Plug Replacement Crankshaft Position (CKP) Sensor Replacement Camshaft Position (CMP) Sensor Replacement Knock Sensor (KS) Replacement (Left Side) Knock Sensor (KS) Replacement (Right Side) Air Cleaner Element Replacement Air Cleaner Assembly Replacement Air Cleaner Resonator Outlet Duct Replacement Description and Operation Special Tools and Equipment