can anyone tell me where my freez plugs or plug is located on a 2006 Pontiac grandprix gt ,supercharge 3.8, and can I change them my self or what ?? please help

There is a black plastic elbow shaped heater connection under the mount for the alternator you might want to check. I just did mine and at first I thought it was the water pump too. Mechanic tells me these go out on the 3.8. There is one right below the tensioner that looks the same and its easier to see.. ...I cant believe they used 90 degree plastic!

I have a 2007 grand prix and I changed the water pump and refilled my coolant but I still smell antifreeze and now I hear water in my dash board can someone explain to me wat that is please

My 2006 Pontiac Grand prix is leaking antifreeze on the back side of the motor & I don't know where it coming from what could it be