1997 Chevrolet 1500 idles fast and shuts off

When I start my Pick up it will start idling very fast and then shut off. What could be the problem?

Idle Air Control valve?

https://www.rockauto.com/en/catalog/chevrolet,1997,c1500+pickup,5.0l+v8,1031544,fuel+&+air,idle+air+control+(iac)+valve,6072

Anytime your foot isn’t on the accelerator, the IAC valve controls the engine idle speed.

Tester