Where the vacuum port on 97 Chevy 1500 gladiator van?

On a 1997 Chevy 1500 Gladiator van, the vacuum port is typically located on the intake manifold. It can be found near the throttle body or on the manifold itself, often near the base. You may need to consult the vehicle's service manual for the exact location, as it can vary based on the engine type and configuration. If you're having trouble locating it, checking for a vacuum hose attached to the manifold may help.