I've been a loyal customer of GM. I currently own a 2002 Buick Rendezvous, 2000 Pontiac Montana, 1998 Buick Regal, and 1996 Chevy Lumina. I think everyone should know that GM sucks! I replaced the Lumina's engine last year due to a coolant leak at 65K ($5.5K). Earlier this year, I replaced the gaskets on the Regal due to a coolant leak ($750) and this past week, I replaced the the Montana's intake manifold gaskets for $700. Apparently, there is a known problem with the gaskets and dex cool coolant combo. I'm now using the regular green stuff. If you don't believe me, check this site out:
http://www.petitiononline.com/mod_perl/signed.cgi?GMcnsmrs&1
Sell your GM car while you can...