I've worked on my 1995 GMC. I'm a newbie but need some help. I've replaced all this and it still skips when in drive and at a stop.No cel is on new cap rotor button plug wires plus coil knock sensor idle air control valve map sensor fuel regulator fuel filter fuel pump 2 months ago redid vacumn lines n did rebuild of injectors. Don't know what else to do?

you do anything with egr, or the ign module in the dist? these are pretty common on that engine

JWFirebird yep I replaced egr valve just forgot to list dang done so much to it . I'll get ignition module today n see what that does. Thanks for your help sure wish we could go back in time to the 70'*.

gas was alot cheaper then. i had a 89 350 (same engine) and i was able to get 20+ mpg hwy with a bed cover and "cat delete"