There is a refrigerant sealant that is used in commercial/residential applications and not the automotive for some reason,(forget the name) it is not cheap, about $75.00 Canadian, but this stuff will seal any small leaks and lasts. I used it on my 94 GP two years ago and the system is still tight. You should be able to buy this at any heating, cooling and air conditioning supplier.
Hi,
>
> My 97 Grand Prix GTP lost its freon last spring. I had it charged and while
> I was at the service man's house (he is retired) he used his freon sniffer
> to sniff around all the places he could reach. He did not detect anything
> with that device, so he added the die and asked me to come back and leave it
> with him over night if it leaked down again...
>
> I procrastinated (or am a tight wad), and now after a year, I forget where
> he lives! LOL. But anyway, I need to get it fixed, as Florida is warming up.
>
> Is anyone familiar with any unusual history on this model Grand Prix that is
> common so I can mention that to an A/C guy when I find one? I am fixing to
> bite the bullet and go to the dealer I guess... but thought I would try you
> folks before I go there... any other advice is welcomed too.
>
> John
>
>