I get the error code 1510. on 2000 Chevrolet Tracker

From what I can find it means that the ISC Solenoid Valve signal #1 circuit malfunction low input. What is this and where is it? Can it easily be replaced?

Asked by for the 2000 Chevrolet Tracker
Idle speed control solenoid valve. Unsure of location but tried to locate info online but was not successful.