There are two black covers one facing up (not the one you want) and one that faces the manifold (much harder to get to, go figure) This is the one that you want. The connectors will only fit one one way, so you can't go wrong.
A 1998 Chevy Camaro uses R134a.
5w30
Yes.
13.2
You need 54mm bore bolts for a caliper for a 1998 Chevy Prism.
1.8L 4 cylinder
The 1998 Cavalier does have a PCV valve. The valve is in the side of the valve cover, held in by a metal ring.
98 chevy lddle control valve
There is not one.
No, it does not.
Fittings for 134 freon
2 and a half cans but let all of the air out