How do you route vacuum lines on a 1993 G20 Chevy van?

To route the vacuum lines on a 1993 G20 Chevy van, start by identifying the vacuum sources, such as the intake manifold or vacuum reservoir. Follow the factory routing diagram, if available, to connect the lines to their respective components, including the brake booster, HVAC system, and any other vacuum-operated devices. Ensure that all connections are tight and free from cracks or leaks. Finally, check for proper operation of all vacuum-dependent systems after completing the routing.