I have 2001 Pontiac grand prix GT with 117k miles, which I bought in 2011, I put 20k miles in the last 10 years. I recently changed my coils as I had intermittent stalling issues, now it works fine. Should I proactively change the ignition control module given the age? What other things I should change in my car to keep it in a good working condition? Thanks. It is a 3800 V6.