Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2002IMPALA LSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICALENGINE MECHANICAL - 3.8L (ON-VEHICLE)
2002 Chevrolet Impala LS
Engine Mechanical - 3.8L (On-Vehicle)
2002 Chevrolet Impala LSSECTION Engine Mechanical - 3.8L (On-Vehicle)
- Specifications
- Diagnostic Information & Procedures
- Diagnostic Starting Point - Engine Mechanical
- Symptoms - Engine Mechanical
- Base Engine Misfire Without Internal Engine Noises
- 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
- 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
- Engine Compression Test
- Cylinder Leakage Test
- Oil Consumption Diagnosis
- Oil Pressure Diagnosis & 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
- Fuel Injector Sight Shield - Replacement
- Drive Belt - Replacement
- Drive Belt Tensioner - Replacement
- Engine Mount Inspection
- Engine Support Fixture
- Engine Mount & Bracket - Replacement
- Engine Mount Strut - Replacement - Right
- Engine Mount Strut - Replacement - Left
- Engine Mount Strut Bracket - Replacement - Upper Radiator Support
- Engine Mount Strut Bracket - Replacement - Left
- Engine Mount Strut Bracket - Replacement - Right Upper
- Positive Crankcase Ventilation (PCV) Valve - Replacement
- Oil Level Indicator & Tube - Replacement
- Intake Manifold - Replacement - Upper
- Intake Manifold - Replacement - Lower
- Valve Rocker Arm Cover - Replacement - Left
- Valve Rocker Arm Cover - Replacement - Right
- Valve Rocker Arm & Push Rod - Replacement
- Valve Stem Oil Seal & Valve Spring - Replacement
- Valve Lifter - Replacement
- Crankshaft Balancer - Replacement
- Crankshaft Front Oil Seal - Replacement
- Engine Front Cover - Replacement
- Oil Pump Cover & Gear Set - Replacement
- Oil Filter Adapter & Bypass Valve Assembly - Replacement
- Timing Chain & Sprockets - Replacement
- Cylinder Head (Left Side) - Replacement
- Cylinder Head (Right Side) - Replacement
- Oil Pan - Replacement
- Engine Oil Pressure Sensor And/Or Switch - Replacement
- Engine Oil Level Sensor And/Or Switch - Replacement
- Oil Pump Pipe & Screen Assembly - Replacement
- Connecting Rod Bearing - Replacement
- Engine Flywheel - Replacement
- Crankshaft Rear Oil Seal - Replacement
- Crankshaft Rear Oil Seal & Housing - Replacement
- Engine - Replacement
- Engine Oil & Oil Filter - Replacement
- Rotating Engine For Service Access
- Description & Operation
- Special Tools & Equipment
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.