Where is iac on 1994 Chevy S-10 pickup?

The IAC (Idle Air Control) valve on a 1994 Chevy S-10 is located on the throttle body. The throttle body itself is usually found on the intake manifold, near the air filter housing. It's a small, usually cylindrical, electrical component attached directly to the throttle body. You might see a single wire or electrical connector plugged into it.