Vehicles have become so goddamn complicated that even dealerships are having issues actually fixing problems for me lately. The new maintenance approach seems to be to replace parts and rack up the bills until something sticks. I've experienced this in multiple areas and shops. I've also noticed that I can no longer do the same simple fixes I used to do on my older vehicles.

You almost need engineers in the shop to work on the fucking things. 

 Curious on what brand you are working with? Going to guess Ford or Chevy