Notice: Do not add anything electrical to the vehicle unless you check with your dealer/retailer first. Some electrical equipment can damage the vehicle and the damage would not be covered by the vehicle's warranty. Some add-on electrical equipment can keep other components from working as they should.
Add-on equipment can drain the vehicle battery, even if the vehicle is not operating.
The vehicle has an airbag system. Before attempting to add anything electrical to the vehicle, see Servicing Your Airbag-Equipped Vehicle and Adding Equipment to Your Airbag-Equipped Vehicle.
Chevrolet Cobalt Service & Repair Manual. 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.
1.
Disconnect and isolate battery ground
cable.
...