Hello, I have a 91 Grand Prix with a 3.1, and it has a very severe coolant leak. I've looked at the radiator hoses and the heater hoses, and those don't appear to be leaking. The water pump doesn't appear to be leaking either. I've gotten under there, and it seems to be coming from the right side of the motor. My dad seems to think that maybe one of the expansion plugs has rotted away and needs to be replaced. Does anyone know of an easy way to replace these? I've looked in my Chilton's manual, and it wants me to remove the transmission, which is kind of a big project on these cars, and I'd hate to do that only to figure out it was something else. If anyone has any suggestions, they would be greatly appreciated!
Thanks!