2001 Chevy Venture.
Dear MW: My a/c is running a little warm, I want to add freon where is the port.
The a/c ports on this van are 1- high side is behind the washer jug on the a/c line with a black cap on it. 2- down near the radiator fan while standing in the center of the bumper looking down at the a/c line. Black cap.
May also want to visit this Freon Leak Area page for common freon leaks on Chevrolet Venture, and Pontiac Montana minivans To view pics of common areas of leaks.
Chevy Venture Van Freon Service Port Locations