Changing Head Gasket On 204 Aveo

Your best bet would be to get yourself a Haynes Repair Manual for your specific year make and model. It will have a very detailed explanation of how to do the work aswell as pictures for each step.

My advice to would be be to take the car to a skilled mechanic. Replacing the head gasket on any car tends to be a fairly indepth and expensive process and you can find yourself halfway through the job then realize you dont have the proper tools to complete it.

Also there can be other problems with both the head and the block that you may not notice if you dont know what to look for which can include small hair line fractures to the deck of the block and head which may need to be milled or replaced depending on the severity of the damamge.

Usually when the head gasket on a vehicle has blown then the car has also suffered mixing of the oil and coolant (depending on where the gasket failed) which can require you to flush both cooling and lubrication systems.