It’s always a mystery when I start my car as to whether or not it will start on its own or if I’m going to have to rev my engine to get it started. 9 our of 10 times I’ll have to rev it to get it started. Not sure why. Any ideas?

Also have traction issues where it says I need to have my traction system serviced. Happens almost every time I turn my car on unless I turn off the traction immediately before putting the car in gear. I’ve notice it happens more often when I go from reverse to drive that it acts up. Someone at a shop told me that there were 3 wires and I had to just wait for the wire to snap before they could fix it because they didn’t know which it was and it was to costly to buy all 3. We bought a new wheel hub bearing to replace that but never did the job because we were told that it would not solve my issue. Not sure what to do. Any help and advice is greatly appreciated

I have a 2002 Monte Carlo btw.