Engine Oil Leaking problems of the 2008 Chevrolet Tahoe Hybrid

I was driving when one of the lifters collapsed , I have had nothing but problems with this vehicle I submitted another complaint a while ago and hadn't heard nothing , now my back hatch wont open my doors on the passenger side don't lock with the button or remote I have done nothing but put money into this vehicle since I got it , it has an oil issue it fowls out the number 1 plug all the time ,ive changed the oil sensor and sending unit , the spider gear in the rear end shredded which there known for had to have that rebuilt ,I had the new valve cover put on , cv joint is leaking , paid over $2200 to have the collapsed lifter fixed , my check engine light is on again saying oil gage, already replaced that once my clock wont work its been in the shop more than my driveway.