Section 906 (Engine Mechanical - 4.3L (LU3))
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Engine Mechanical
- Symptoms - Engine Mechanical
- Base Engine Misfire without Internal Engine Noises
- Base Engine Misfire with Abnormal Valve Train Noise
- Base Engine Misfire with Coolant Consumption
- Base Engine Misfire with Excessive Oil Consumption
- Engine Noise on Start-Up, but Only Lasting a Few Seconds
- Upper Engine Noise, Regardless of Engine Speed
- Lower Engine Noise, Regardless of Engine Speed
- Engine Noise Under Load
- Engine Will Not Crank - Crankshaft Will Not Rotate
- Coolant in Combustion Chamber
- Coolant in Engine Oil
- Engine Compression Test
- Cylinder Leakage Test
- Oil Consumption Diagnosis
- Oil Pressure Diagnosis and Testing
- Oil Leak Diagnosis
- Crankcase Ventilation System Inspection/Diagnosis
- Drive Belt Chirping Diagnosis
- Drive Belt Squeal Diagnosis
- Drive Belt Whine Diagnosis
- Drive Belt Rumbling Diagnosis
- Drive Belt Vibration Diagnosis
- Drive Belt Falls Off Diagnosis
- Drive Belt Excessive Wear Diagnosis
- Drive Belt Tensioner Diagnosis
- Repair Instructions
- On-Vehicle Repair Instructions
- Drive Belt Replacement
- Drive Belt Tensioner Replacement
- Drive Belt Idler Pulley Replacement - Right
- Drive Belt Idler Pulley Replacement - Without Air Conditioning
- Engine Mount Inspection
- Engine Mount Replacement - Left
- Engine Mount Replacement - Right
- Positive Crankcase Ventilation (PCV) Valve Replacement
- Intake Manifold Replacement - Upper
- Intake Manifold Replacement - Lower
- Valve Rocker Arm Cover Replacement - Left
- Valve Rocker Arm Cover Replacement - Right
- Valve Rocker Arm and Push Rod Replacement
- Valve Stem Oil Seal and Valve Spring Replacement
- Valve Lifter Replacement
- Cylinder Head Replacement - Left
- Cylinder Head Replacement - Right
- Crankshaft Balancer Replacement
- Crankshaft Front Oil Seal Replacement
- Engine Front Cover Replacement
- Crankshaft Position (CKP) Reluctor Ring Replacement
- Timing Chain and Sprockets Replacement
- Balance Shaft Replacement
- Camshaft Replacement
- Remote Oil Filter Adapter Replacement
- Remote Oil Filter Adapter Pipe Replacement
- Oil Filter Adapter Replacement
- Oil Filter Bypass Valve Replacement
- Oil Pan Replacement (2WD)
- Oil Pan Replacement (4WD)
- Engine Oil Pressure Sensor and/or Switch Replacement
- Oil Level Indicator and Tube Replacement
- Oil Pump Replacement
- Crankshaft Rear Oil Seal Replacement
- Crankshaft Rear Oil Seal Housing Replacement
- Engine Flywheel Replacement
- Engine Replacement
- Engine Oil and Oil Filter Replacement
- Off-Vehicle Repair Instructions
- Draining Fluids and Oil Filter Removal
- Engine Flywheel Removal
- Clutch Pilot Bearing Removal
- Exhaust Manifold Removal - Left
- Exhaust Manifold Removal - Right
- Oil Level Indicator and Tube Removal
- Water Pump Removal
- Crankshaft Balancer Removal
- Valve Rocker Arm Cover Removal - Left
- Valve Rocker Arm Cover Removal - Right
- Distributor Removal
- Intake Manifold Removal
- Valve Rocker Arm and Push Rod Removal
- Cylinder Head Removal - Left
- Cylinder Head Removal - Right
- Valve Lifter Removal
- Oil Filter Adapter Removal
- Oil Pan Removal
- Oil Pump Removal
- Engine Front Cover Removal
- Timing Chain and Sprockets Removal
- Balance Shaft Removal
- Camshaft Removal
- Piston, Connecting Rod, and Bearing Removal
- Crankshaft Rear Oil Seal and Housing Removal
- Crankshaft and Bearings Removal
- Engine Block Plug Removal
- Engine Block Cleaning and Inspection
- Cylinder Boring and Honing
- Piston and Connecting Rod Disassemble
- Piston, Connecting Rod, and Bearings Cleaning and Inspection
- Piston and Connecting Rod Assemble
- Crankshaft and Bearings Cleaning and Inspection
- Measuring Connecting Rod Bearing Clearances - J 43690 Method
- Crankshaft Balancer Cleaning and Inspection
- Engine Flywheel Cleaning and Inspection
- Camshaft and Bearings Cleaning and Inspection
- Camshaft Bearing Removal
- Camshaft Bearing Installation
- Balance Shaft Bearing and/or Bushing Removal
- Balance Shaft Cleaning and Inspection
- Balance Shaft Bearing and/or Bushing Installation
- Timing Chain and Sprockets Cleaning and Inspection
- Valve Rocker Arm and Push Rods Cleaning and Inspection
- Valve Lifters and Guides Cleaning and Inspection
- Cylinder Head Disassemble
- Cylinder Head Cleaning and Inspection
- Valve Guide Reaming/Valve and Seat Grinding
- Cylinder Head Assemble
- Oil Pump Disassemble
- Oil Pump Cleaning and Inspection
- Oil Pump Assemble
- Valve Rocker Arm Cover Cleaning and Inspection
- Oil Pan Cleaning and Inspection
- Intake Manifold Disassemble (LU3)
- Intake Manifold Cleaning and Inspection
- Intake Manifold Assemble (LU3)
- Exhaust Manifold Cleaning and Inspection
- Water Pump Cleaning and Inspection
- Thread Repair
- Service Prior to Assembly
- Engine Prelubing
- Engine Block Plug Installation
- Crankshaft and Bearings Installation
- Crankshaft Rear Oil Seal and Housing Installation
- Piston, Connecting Rod, and Bearing Installation
- Camshaft Installation
- Balance Shaft Installation
- Timing Chain and Sprockets Installation
- Engine Front Cover Installation
- Oil Pump Installation
- Oil Pan Installation
- Oil Filter Adapter Installation
- Crankshaft Balancer Installation
- Valve Lifter Installation
- Cylinder Head Installation - Left
- Cylinder Head Installation - Right
- Valve Rocker Arm and Push Rod Installation
- Intake Manifold Installation
- Distributor Installation
- Valve Rocker Arm Cover Installation - Left
- Valve Rocker Arm Cover Installation - Right
- Oil Level Indicator and Tube Installation
- Water Pump Installation
- Exhaust Manifold Installation - Left
- Exhaust Manifold Installation - Right
- Clutch Pilot Bearing Installation
- Engine Flywheel Installation
- On-Vehicle Repair Instructions
- Description and Operation
- Special Tools & Equipment