I think I finally got the multiple misfire corrected! I changed plugs and wire and that did not help. So, I bought a coil and tried it on each spot seperatly with no help. I tried sprayn carb cleaner for vaccum leaks with no help. I though WTF I'll buy all 3 coils. I installed them and as soon as I fired it up, I knew I had it. Took her for a ride and I think I may have fallen back in love again. Now, if the seat heater, and a/c worked and that damn rough shift were all better I'd be much happier! Thanks for the help so far, I didn't have the money to have someone else put their hands in er.

Did you test your old coils?

Can u do that with car off, old coils off? Also, I just went out and ran it good, and I was gettn sum misfires at high RPMs. I had pulled plugs yesterday and a couple look a little black, not on the very end, but around the ring at the end. Could this maybe a problem? Maybe replace plugs again?

Here'* how to test them.

https://www.gmforum.com/t278818/

Clean the plugs and see if that helps.