ABS light comes on while driving?

Hello,
I just purchased a 1997 Buick Lesabre, and I know I have the Intake problem, already taking care of that, but now I have a problem with the ABS light coming on once the car has been driven for a while. The brake pads are new, so what could it be.

Thanks in Advance

Probably a loss of signal or other type of malfunction in one of the wheel speed sensor circuits.

Make sure that all of your tires are inflated properly, one could under/overfilled not a probable cause, but also not a impossibility.

I think I would check the brake fluid level to make sure it is okay. Then I would go drive it and jump on the brakes to see if the anti-lock works. A good place to test them is on a bumpy gravel road. Maybe one of the wheel sensors was knocked out of whack when the new pads were put in. If that were the case, it seems like the one that isn't working would cause that wheel to lock up and skid.