GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2003
🢒
Envoy - 2WD
🢒
Engine
🢒 Engine Mechanical - 4.2L
Engine
All Description and Operation
Crankcase Ventilation System Description
Drive Belt System Description
Engine Component Description
Exhaust Camshaft Position Actuator Description
Lubrication Description
New Product Information
All Special Tools and Equipment
Special Tools
All Visual Identification
Disassembled Views
Engine Identification
Cleaning, Inspection, and Adjustment
Camshaft Cover Cleaning and Inspection
Camshaft Timing Chain and Sprocket Cleaning and Inspection
Camshafts Cleaning and Inspection
Crankshaft and Bearing Cleaning and Inspection
Crankshaft Balancer Cleaning and Inspection
Cylinder Head Cleaning and Inspection
Engine Block Cleaning and Inspection
Engine Flywheel Cleaning and Inspection
Engine Front Cover Cleaning and Inspection
Exhaust Manifold Cleaning and Inspection
Intake Manifold Cleaning and Inspection
Oil Pan Cleaning and Inspection
Oil Pump Cleaning and Inspection
Piston, Connecting Rod, and Bearing Cleaning and Inspection
Valve Rocker Arm and Hydraulic Valve Lash Adjuster Cleaning and Inspection
Water Pump Cleaning and Inspection
Diagnostic Procedures
Base Engine Misfire with Abnormal Internal Lower Engine Noises
Base Engine Misfire with Abnormal Valve Train Noise
Base Engine Misfire with Coolant Consumption
Base Engine Misfire with Excessive Oil Consumption
Base Engine Misfire without Internal Engine Noises
Camshaft Position Actuator Diagnosis
Coolant in Combustion Chamber
Coolant in Engine Oil
Diagnostic Starting Point - Engine Mechanical
Engine Compression Test
Engine Noise on Start-Up, but Only Lasting a Few Seconds
Engine Noise Under Load
Engine Will Not Crank - Crankshaft Will Not Rotate
Lower Engine Noise, Regardless of Engine Speed
Symptoms - Engine Mechanical
Upper Engine Noise, Regardless of Engine Speed
Disassembly, Overhaul, Repair, and Assembly
Camshaft Cover Installation
Camshaft Cover Removal
Camshaft Installation
Camshaft Position Actuator Solenoid Valve Installation
Camshaft Position Actuator Solenoid Valve Removal
Camshaft Removal
Crankshaft and Bearing Installation
Crankshaft and Bearing Removal
Crankshaft Balancer Installation
Crankshaft Balancer Removal
Crankshaft Front Oil Seal Installation
Crankshaft Front Oil Seal Removal
Crankshaft Rear Oil Seal and Housing Installation
Crankshaft Rear Oil Seal and Housing Removal
Crankshaft Rear Oil Seal Installation
Crankshaft Rear Oil Seal Removal
Cylinder Head Assemble
Cylinder Head Disassemble
Cylinder Head Installation
Cylinder Head Removal
Cylinder Honing
Cylinder Sleeve Installation
Cylinder Sleeve Removal
Draining Fluids and Oil Filter Removal
Drive Belt Idler Pulley Installation
Drive Belt Idler Pulley Removal
Drive Belt Tensioner Installation
Drive Belt Tensioner Removal
Engine Block Plug Installation
Engine Block Plug Removal
Engine Coolant Thermostat Housing Installation
Engine Coolant Thermostat Housing Removal
Engine Flywheel Installation
Engine Flywheel Removal
Engine Front Cover Installation
Engine Front Cover Removal
Engine Lift Bracket Installation
Engine Lift Bracket Removal
Engine Prelubing
Exhaust Manifold Installation
Exhaust Manifold Removal
Fuel Rail and Injectors Installation
Fuel Rail and Injectors Removal
Heater Inlet Hose Fitting Installation
Heater Inlet Hose Fitting Removal
Heater Outlet Hose Fitting Installation
Heater Outlet Hose Fitting Removal
Intake Manifold Installation
Intake Manifold Removal
Oil Filter Adapter Installation
Oil Filter Adapter Removal
Oil Level Indicator and Tube Installation
Oil Level Indicator and Tube Removal
Oil Pan Installation
Oil Pan Removal
Oil Pump Installation
Oil Pump Removal
Oil Pump Suction Pipe and Screen Assembly Installation
Oil Pump Suction Pipe and Screen Assembly Removal
Piston and Connecting Rod Assemble
Piston and Connecting Rod Disassemble
Piston, Connecting Rod, and Bearing Installation
Piston, Connecting Rod, and Bearing Removal
Power Steering Pump Bracket Installation
Power Steering Pump Bracket Removal
Service Prior to Assembly
Thread Repair
Timing Chain and Sprocket Installation
Timing Chain and Sprocket Removal
Timing Chain Tensioner Installation
Timing Chain Tensioner Removal
Valve Rocker Arm and Hydraulic Valve Lash Adjuster Installation
Valve Rocker Arm and Hydraulic Valve Lash Adjuster Removal
Water Outlet Installation
Water Outlet Removal
Water Pump Installation
Water Pump Removal
General Diagnostic Information
Crankcase Ventilation System Inspection/Description
Cylinder Leakage Test
Drive Belt Chirping Diagnosis
Drive Belt Excessive Wear Diagnosis
Drive Belt Falls Off Diagnosis
Drive Belt Rumbling Diagnosis
Drive Belt Squeal Diagnosis
Drive Belt Tensioner Diagnosis
Drive Belt Vibration Diagnosis
Drive Belt Whine Diagnosis
Oil Consumption Diagnosis
Oil Leak Diagnosis
Oil Pressure Diagnosis and Testing
General Information
Cleanliness and Care
Replacing Engine Gaskets
Separating Parts
Tools and Equipment
Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant
Mechanical Diag. and Drive Belt/Chain Routings Schem. Diag.
Timing Chain Alignment Diagram
Mechanical Specifications
Engine Mechanical Specifications
Fastener Tightening Specifications
Other Specifications
Adhesives, Fluids, Lubricants, and Sealers
Thread Repair Specifications
Removal, Installation, and Replacement
Camshaft Cover Replacement
Camshaft Position Exhaust Actuator Replacement
Camshaft Replacement
Camshaft Timing Chain, Sprocket, and Tensioner Replacement
Crankshaft Balancer Replacement
Crankshaft Front Oil Seal Replacement
Crankshaft Rear Oil Seal and Housing Replacement
Crankshaft Rear Oil Seal Replacement
Cylinder Head Replacement
Drive Belt Idler Pulley Replacement
Drive Belt Replacement
Drive Belt Tensioner Replacement
Engine Flywheel Replacement
Engine Front Cover Replacement
Engine Mount and Bracket Replacement - Left Side
Engine Mount and Bracket Replacement - Right Side
Engine Mount Inspection
Engine Oil and Oil Filter Replacement
Engine Oil Level Sensor and/or Switch Replacement
Engine Oil Pressure Sensor and/or Switch Replacement
Engine Replacement
Intake Manifold Replacement
Oil Filter Adapter and Bypass Valve Assembly Replacement
Oil Level Indicator Tube Replacement
Oil Pan Replacement
Oil Pump Replacement
Positive Crankcase Ventilation Hose/Pipe/Tube Replacement
Valve Rocker Arm and Hydraulic Valve Lash Adjuster Replacement
Valve Stem Oil Seal and Valve Spring Replacement