Quote Originally Posted by stcspiderman View Post
My abs and tcs light come on when driving, then my steering gets harder

I can park the car go out next morning or later in day light will be off after driving for a little bit comes back on.

Was wondering anyone has had same simler problem.

I only got abs tcs light after install of alt plug from 3100 engine. I have right one now.

Could Of I damaged the ebcm? I would I know If I did?
Sounds like your EBCM fried... ours are apparently notorious for taking more juice than they can handle - rebuilders solder in parts to keep this from happening. Do a search and you'll find plenty of info here from the past couple months.

As for your wiring... if your battery voltage is surging, you've got another problem entirely aside from your EBCM.