I pulled together this information prompted by this thread:
http://www.fiero.nl/forum/Forum2/HTML/107934.html

Thanks to those who's pictures I've borrowed to illustrate things in this thread.

People are still finding a disconnected pipe or hose of the firewall below the rear window.
Sometimes it's a hose, or has a metal elbow, or just a tube on the firewall.



This originally ran from the valve cover to the air cleaner (to bottom of intake tube on some).

It seems half the recalls were done by guys too lazy to remove the hose and cap the ends of the tube (or plug hole in air cleaner housing), so they just left it hanging to suck dirty engine bay air into the air filter housing - bypassing the air filter.





This change was part of the recall kit.



A new metal tube was installed that ran from the valve cover to a NEW rubber intake tube. The tube on the firewall is no longer used.




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[This message has been edited by fierosound (edited 03-09-2015).]

I found these pages from the Technical Service Bulletin for the recall
http://www.fieronews.net/fu...alls/fierorecal2.pdf

[This message has been edited by fierosound (edited 06-04-2016).]

Recall directions for the 4-cylinder.
http://www.fieronews.net/fu...alls/fierorecal1.pdf

[This message has been edited by fierosound (edited 10-24-2020).]

The recall is also when they removed the decklid weatherstrip on the leading edge of the decklid.

The idea was that it would allow more hot air out of the engine bay, but removing it allowed water to fall through past the window onto the engine and exhaust manifold - and the thermal shock caused the exhaust manifold to crack in many cases.

[This message has been edited by fierosound (edited 04-13-2010).]

quote Originally posted by skuzzbomer: I still don't understand why the recall was even done on the V6s...? Doesn't make a whole lot of sense. Anyways, carry on.

The reasons the recall was done on the V6 alot apply to the 4cyl too.
The PCV hose was moved to prevent the air filter from being soaked in oil,
The big heat shield that goes between the manifold and the block is there in case the block decides to let a piston go through it and make a hole and dump coolant and oil on the CAT, catch fire.
The heatsheild over the manifold is to prevent heat on the wiring harness, which the loom can become brittle and break off, fall on the CAT and catch fire.
The decklid weatherstrip was removed because it can become brittle, break off, fall on the CAT, catch fire.

As you can see this is where GM was going with this.
The CAT is a huge plate to light things up too
I have seen some of the decklid strips do just that get real brittle and break off, the CAT is straight below.

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[This message has been edited by fierosound (edited 10-27-2010).]