How do you remove the distributor cap on a 1997 Chevy silverado 5.7L and is there coil?

The 1997 Chevy Silverado 5.7L (likely a Vortec 350) does not have a distributor cap and rotor. It uses a coil-near-plug (CNP) ignition system, meaning each spark plug has its own ignition coil mounted directly on or very near it. There's no central distributor.

Therefore, there's nothing to "remove" in the way of a distributor cap. You'll find individual ignition coils, usually mounted on top of the spark plug tubes within the valve covers. To access them, you'd need to remove the valve cover(s).

To service the ignition system on this engine, you'd be working with the individual coils themselves and the associated wiring, not a distributor cap.