I remember a discussion in this newsgroup about the pellets that are recommended you put in the cooling system when you do a flush and refill.
Many people said the pellets sold at GM Dealers are made by Barr's Leak and you could safely just purchase a bottle or can of Barr's Leak and use it when refilling the system.
I am about to do this on a '94 Cadillac DeVille with the 4.9 engine, using plain Prestone antifeeze instead of the Dex-Cool, and just wanted to verify with the knowledgeable people here that the info I have in valid.
Thanks for the help..