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.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 31 (ENGINE MECHANICAL)
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 31 (Engine Mechanical)
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 31 (Engine Mechanical)
WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Visual Identification
- Diagnostic Information And 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
- Coolant in Combustion Chamber
- Coolant in Engine Oil
- Engine Compression Test
- Cylinder Leakage Test
- Oil Consumption Diagnosis
- Oil Pressure Diagnosis and Testing
- Crankcase Ventilation System Diagnosis
- Crankcase Ventilation System Functional Test
- Crankcase Ventilation System Inspection/Diagnosis
- Oil Leak 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
- Engine Mount Inspection
- Drive Belt Tensioner Replacement
- Intake Runner Replacement (Front)
- Intake Runner Replacement (Rear)
- Intake Plenum Replacement
- Intake Manifold Replacement
- Engine Mount Replacement - Right
- Crankshaft Balancer Replacement
- Front Timing Belt Cover Replacement
- Rear Timing Belt Cover Replacement
- Timing Belt Replacement
- Timing Belt Tensioner Pulley Replacement
- Camshaft Drive Sprocket Replacement
- Camshaft Cover Replacement (Front)
- Camshaft Cover Replacement (Rear)
- Camshaft Cover Replacement - Left
- Camshaft Cover Replacement - Right
- Camshaft Replacement - Left
- Camshaft Replacement - Right
- Valve Lifter Replacement
- Cylinder Head Replacement (Front)
- Cylinder Head Replacement (Rear)
- Flexplate Replacement
- Crankshaft Rear Oil Seal Replacement
- Crankshaft Front Oil Seal Replacement
- Oil Level Indicator and Tube Replacement
- Oil Pan Replacement
- Oil Pump Pipe and Screen Assembly Replacement
- Oil Baffle Replacement
- Oil Pump Replacement
- Oil Pump Seal Replacement
- Crankcase Vent Housing Replacement
- Oil Cooler Line Replacement
- Oil Cooler Replacement
- Draining Fluids and Oil Filter Removal
- Off-Vehicle Repair Instructions
- Intake Plenum Removal
- Intake Manifold Removal
- Water Crossover Removal
- Exhaust Manifold Removal
- Crankcase Vent Housing Removal
- Drive Belt Tensioner Removal
- Crankshaft Balancer Removal
- Timing Belt Cover Removal - Front
- Camshaft Cover Removal
- Camshaft Drive Sprocket Removal
- Timing Belt Tensioner Pulley Removal
- Water Pump Removal
- Timing Belt Cover Removal - Rear
- Thermostat Housing/Thermostat Removal
- Oil Filter Housing Removal
- Camshaft Removal
- Oil Cooler Removal
- Oil Pan Removal
- Cylinder Head Removal
- Oil Pump Removal
- Piston, Connecting Rod, and Bearing Removal
- Crankshaft Rear Oil Seal Removal
- Crankshaft and Bearings Removal
- Engine Block Cleaning and Inspection
- Cylinder Boring and Honing
- Crankshaft and Bearings Cleaning and Inspection
- Piston and Connecting Rod Disassemble
- Piston, Connecting Rod, and Bearings Cleaning and Inspection
- Piston Selection
- Piston and Connecting Rod Assemble
- Camshaft and Bearings Cleaning and Inspection
- Cylinder Head Disassemble
- Cylinder Head Cleaning and Inspection
- Cylinder Head Assemble
- Oil Pump Inspection
- Oil Pump Disassemble
- Oil Pump Assemble
- Thread Repair
- Service Prior to Assembly
- Crankshaft Bearings Selection
- Crankshaft and Bearings Installation
- Crankshaft Rear Oil Seal Installation
- Piston, Connecting Rod, and Bearing Installation
- Cylinder Head Installation
- Camshaft Installation
- Oil Filter Housing Installation
- Oil Pump Installation
- Oil Pan Installation
- Oil Cooler Installation
- Thermostat Housing/Thermostat Installation
- Timing Belt Cover Installation - Rear
- Water Pump Installation
- Timing Belt Tensioner Pulley Installation
- Camshaft Drive Sprocket Installation
- Camshaft Cover Installation
- Timing Belt Cover Installation - Front
- Crankshaft Balancer Installation
- Drive Belt Tensioner Installation
- Crankcase Vent Housing Installation
- Exhaust Manifold Installation
- Water Crossover Installation
- Intake Manifold Installation
- Intake Plenum Installation
- Engine Replacement
- Engine Prelubing
- On-Vehicle Repair Instructions
- Description And Operation
- Crankcase Ventilation System Description
- Engine Component Description
- New Product Information
- Lubrication Description
- Cleanliness and Care
- Separating Parts
- Replacing Engine Gaskets
- Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealer
- Tools and Equipment
- Special Tools And Equipment
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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.