1996 GMC Jimmy engine problems

Have had many smaller problems, took in for alternator they replace battery cost to me $70 month or so later need new alternator . And had gauges checked gas gauge not reading true, next week or so window wipers start acting up and stopping mid- window and wiper fluid wont spray.

I was driving down I-65 going to work, 70 MPH. I looked in my rear view mirror and notice a large amount of smoke coming from my 1995, GMC jimmy, 104000 miles. I looked at my gauges and saw that I had no oil pressure and the check engine light was on. Fortunately I was right at an exit. I got off the interstate and stop at a gas station. All of these events happen in less than 5 minutes. When I go out I noticed engine oil on the outside of my vehicle, driver's side. I open the hood and checked the oil.