Cut OBD2 wire harness missing port

I'm rather disappointed that I had to format this so small to make it work. If you have trouble reading it, let me know and I'll cut it up into smaller parts that can be expanded more.

Okay, that isn't a common thing but it's not the first time I've seen it, usually on fleet vehicles to keep people "honest"
Wiring wise GM basically uses the same colors for the OBD II ports regardless of the vehicle so a used one with some extra wire will work.
What you have to watch for is to get the part from as new a vehicle as possible, that is because while the OBDII standard has been around since 1996 they have added extra connections in later years. There are only a few "required" connections and after those each manufacturer can use the remaining pins for whatever they wish.
Being this is a van they don't have extra connections for 4WD or magnetic suspension.
It had the basic layout for GM. Pin 16 is constant power from a red wire, as they cut it off check if they removed the fuse (no.73 20 amp) Pin 14 is high speed CAN- while pin 6 is high speed CAN+ Pins 4 and 5 both go to ground. And Pin 1 is for the slow speed LAN.

Just be sure that you splice the CAN wires correctly, tan to pin 14 and tan with black stripe to pin 6.

No problem, it's what this site is for. Please return any time with your automotive questions.