Try RockAuto and see if you can find what you need through them RockAuto Parts Catalog
. They have great prices and the Forum has a discount code http://www.gmforum.com/t279335/
Please add your year and trim of your vehicle to your signature line. That way when you start asking questions in other areas of the forum, we all have a better idea on how to assist you. Click on "Quick Links" above, go down to "User Control Panel" and then click on "Edit your Signature" It'* pretty straight forward from there.