Man, I just wanted to thank you and thank God!!! My local Chevy dealer actually told me the engine was bad and it would cost between $3000 for a used engine and $4000 for a new engine!!! They also told me I had no compression in #2 & 3 cylinders! I don't think the pulled a single plug, they were so tight and rough coming out. I had it towed home and started doing some searching. I also borrowed Auto Zones code reader for a refundable deposit which was great since I couldn't get the car out of it's own way to take it in. Of course I got the PO300, "random multiple misfire" code. I hadn't change the plugs yet since new;( so did that, ohmed out the coils and everything was right on the money but still rattling and rolling and of course the "check engine" light still "flashing". I'm so glad I didn't have to drive it very far when it failed, only a few miles and hopefully didn't kill the "cat". I checked autozone web site and found the Part Number: CB9 and my local store had it for $55 bucks. You have to put it together which only took a few minutes, kinda got me when you had to put the thermal grease on and push the contact springs into it. I did see what appeared to be the same on the old one. I got it all back together and she "FIRED" up beautifully just like it should!!! Drove like a charm. I'm really disappointed in my local dealer and plan on giving them a call. My wife was ready to start selling the seats/tires and anything else she could. Thanks again and Thank God for the fabulous info posted here and on the web. Looks like the "Plastic" housing must break down right around 100,000 miles. We had the same as the original poster, 105K, couldn't believe it. It is 11 years old but we bought it new and have taken care of it and sure didn't want to go looking for something else or putting a new engine in it. God bless you all, Ben Tebbens.