Running really slow
Part #AFS75 or GM part #25312184 for the front and ASF97 or #25312196 for the rear.
I have been buying from www.gmpartsdirect.com but there are other places out there.
One more thing, Shoebox's website is one of your best friends. http://shbox.com/1/4th_gen_tech1.html
Just make sure he doesn't touch your balancer bolt!!!

