On a Cavalier, the solenoid is on the starter. Replace the whole thing.

First though, make sure your wiring is all still good. I once replaced the starter on a Jimmy I had and then discovered it was a rotten battery cable that was the culprit.

__________________
Paul Niwranski
1966 Cadillac Superior Crown Royale Limousine Hearse

If you're mirrors ain't shakin...you got taken...
RIP Member #8
Be careful what you wish for...