The coolant is clean… and its an 07 grand prix, didnt think it had that module… I know that use to be an issue
I presume by “module” you mean “vacuum modulator”. You are probably right, unlikely gadget for a modern car like an 07 to have. Very good news that coolant is oil free btw… Mystery remains where the automatic trans fluid is going.
Gee I thought transman was back. What’s worse though, replying to a 13 year old conversation, or the new poster asking a question of what seal that had already been answered if the poster would have read the conversation.
So it was the right inner seal that was replaced but there are other seals and your results may be different. As transman said, there are only three possibilities: a leak, the modulator, or the cooler.