concerning grey / brown smoke when idling and missing at normal speed and uphill engine light recently came on would this a senor problem or timming issue

your running rich. What year and size engine do you have?

I see your other post, thy to not make multiple posts on the same topic. The fuel pressure regulator on the spider injectors your truck has can leak causing the truck to run rich. Get the codes read and post them back. I'm ecpecting a System Rich or something along those lines.

andrew, it has a 5.7 vortex sorry about the double posting was sure my frist question got posted i also have the whinning noise

its a 1997 with 150,000 miles

Yes, get the codes read. Autozone does it for free, but sometimes they give you the wrong definition just get the code number itself.