Spark plugs

I have a 2001 Aurora with V6 3.5 engine and have looked for the spark plugs but can't even see the wires. How do I go about changing them. Also has anyone else had trouble with the pipe that goes from the engine block right front to the resevoir and then to the heater core? I had this pipe rot out and had to replace it and it is only 4 years old. I thought the cooling system with the DEX antifreeze was supposed to last at least 6 years. :confused:

I believe your car doesn't have spark plug wires at all because the coils are mounted directly over the spark plugs. There should be a bank of 3 coils that mount directly on the engine...the plugs are below here.