Hello all, recently i acquired a 2000 Chevy s10 LS with a 1996 4.3 engine, and tranny. I have noticed that the dashboard flickers, head lamp flickers, and there is a misfire on cylinder #4, and the transmission shifts from 2, to 3 at 3000 rpm's if you let off the gas but shifts fine from 1, to 2, and 3, 4, to 5. I know nothing about this truck but something ins't right. I know the basics of an engine and i do a lot of electrical work, but I'm here scratching my head.

 

maybe a bad ground