If you need pontiac parts or Chevy parts
 

I just bought some parts to fix up my grand prix today from www.gmpartsclub.com I bought Pontiac Parts, but they also sell Chevy Parts and Chevy Accessories. I had been using my local dealer but after hearing you could buy parts online I learned I was getting screwed. Check out the Chevy Truck parts section for some good online auctions.
Impala Parts
Grand Prix Parts
Pontiac G6 Parts
Vibe Parts
Montana Parts
Sunfire Parts
Aztek Parts
Bonneville Parts
Grand AM Parts
Pontiac Accessories
Firebird Parts
G8 parts
G5 Parts
Torreent Parts
Solstice Parts
Tahoe Parts

Interesting I buy my pontiac parts and chevy parts from http://www.chevyclub.org which looks to be close to the site above.