Chevy & GMC Vans

I am working on getting the wires replaced and while I can get the first clip that holds all three wires open, the one that hold individual ones seem to have me stuck. How do I get them open?

I got the wire clips open with a little prying with a screwdriver. Another question, since there is wire loom over the wires on the passenger side wires, I assume they need that, how do you get it on the new ones other than with lots of struggle?

you found the screwdriver trick before anyone could respond, good job.
If you are talking about the split plastic wire loom do this...
hold the wireloom in your hand with your thumb and all fingers but the index finger. put your index finger on the backside of the wireloom with the split opposite your finger. Put the split against the wire with the wireloom at about a 45 degree angle to the wire and push it onto the wire. Holding the wireloom at the same angle, feed it on to the wire. Probably clear as mud, but once you get it, putting wire loom on is a cinch.

The one piece of wire loom fell apart in my hands taking it off, I take it that it is needed on the side they have it. I guess I will be looking for some tomorrow morning. Oh, thanks for the info on the wire loom, I couldn't get it to go on without a lot of struggles until reading that, then it is easy.

I added wire loom to a number of my plug wires to add a bit of separation between them and metal to mitigate arcing as they age.

I couldn't get the cracked one back on. I guess I will need to find some new wire loom.

local autoparts will have it.