Chevrolet Cobalt Service & Repair Manual: Exhaust

Timing Chain, Replace

Caution: With the timing chain removed, avoid turning the camshaft or crankshaft. If movement is required, exercise extreme caution to avoid valve damage caused by piston contact. ...

Catalytic Converter R&R

1. Raise and support vehicle. 2. Remove wheel drive shaft heat shield. 3. Remove Heated Oxygen Sensor (HO2S). ...

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Chevrolet Cobalt Service & Repair Manual. Tire & Wheel Assembly Rotate & Balance
A statically balanced wheel is balanced in one plane, around centerline of wheel. This prevents simple up and down movement relative to centerline of the wheel. A dynamically balanced wheel is balanced on both sides of hub. This reduces the chance of wobble off axis. Dynamic b ...