Originally Posted by
Firebirdjones
I would guess they are talking about the entire piece that runs along the top of the intake manifold,,,,on the passenger side,,,,then crosses over at the rear of the block to get over to the back of the driver side valve cover.
This entire setup is made of plastic,,,,and then also covered in a type of foam to protect it from heat. Plastic and heat don't mix too well,,,and it wouldn't surprise me if this plastic would get brittle and crack over time.
I am sure this entire setup is NOT going to be a $20 part from GM. Probably not $200 either,,but hey,,,shops have to make money too.
Check your local dealer and get an idea on price,,,,if it truely needs replaced I am sure you can do it on your own.