Sounds like maybe the head gasket let go when it got hot. Hopefully it did not warp the head. If it did, it's still not the end of the world. When you have the head off to change the gasket, have it checked and if necessary, have it planed a couple of thousandths t true it up.
on my 2002 alero I havw the 2.2 4cylinder ecotec engine, on the intake there is a cover that says 2.2, remove the four bolts and the plugs are down in the little cylinder holes mine require a 5/8 spark plug socket and you will also need an extension.
2002-2004 Alero 2.2L Has a Stock Limit of 110, 115 on certain models only. Source: Maxing out speed on Highway
next to the 5th
no egr valve on 1999 to 2001 2.4 alero
4 cylinder engine- 1,4,3,2 6 cylinder engine- 1,6,5,4,3,2
0.60
passenger side fender
It is located over the cylinder head.
my 2002 alero is missing and has no power what could b wrong
At the lower end of the engine Behind the radiator (4 cylinder) At the rear (6 cylinder)
I can not answer your question but I do know that there was a recall on them.
behind the gas tank